Yamaha Mg166 service manual

SERVICE MANUAL

SPECIFICATIONS .................................................................. 3/5DIMENSIONS .............................................................................. 7PANEL LAYOUT ......................................................... 8CIRCUIT BOARD LAYOUT .................................. 12WIRING DIAGRAM ............................................................. 13OVERALL ASSEMBLY WIRING ........................................ 14MG166CX-USB/MG166CX DISASSEMBLY PROCEDURESMG166CX-USB/MG166CX ..................................................... 19MG166C-USB/MG166C DISASSEMBLY PROCEDURESMG166C-USB/MG166C .......................................................... 23LSI PIN DESCRIPTION LSI.................................................. 27IC BLOCK DIAGRAM IC...................................................... 30CIRCUIT BOARDS ........................................................... 33INSPECTIONS .......................................................................... 44/52PARTS LISTIC & DIODE FIGURES BLOCK & LEVEL DIAGRAM &CIRCUIT DIAGRAM

CONTENTS

PA 011869

Copyright (c) Yamaha Corporation. All rights reserved. 07.08HAMAMATSU, JAPAN

ECF

This document is printed on chlorine free (ECF) paper.

MG166CX-USB/MG166CX: xxxxxx-xxxxxMG166C-USB/MG166C: xxxxxx-xxxxx

MG166C-USBMG166CX-USB

MG166CMG166CXMG166C-USBMG166CX-USB

62,79068,04071,19076,440

20078

MG166CX-USB/MG166CX/MG166C-USB/MG166C

2

WARNINGComponents having special characteristics are marked and must be replaced with parts having specification equal to those originallyinstalled.

IMPORTANT NOTICEThis manual has been provided for the use of authorized Yamaha Retailers and their service personnel. It has been assumed that basic serviceprocedures inherent to the industry, and more specifically Yamaha Products, are already known and understood by the users, and havetherefore not been restated.

WARNING: Failure to follow appropriate service and safety procedures when servicing this product may result in personal injury, destruc-tion of expensive components and failure of the product to perform as specified. For these reasons, we advise all Yamahaproduct owners that all service required should be performed by an authorized Yamaha Retailer or the appointed servicerepresentative.

IMPORTANT: This presentation or sale of this manual to any individual or firm does not constitute authorization, certification, recognition ofany applicable technical capabilities, or establish a principal-agent relationship of any form.

The data provided is believed to be accurate and applicable to the unit(s) indicated on the cover. The research engineering, and servicedepartments of Yamaha are continually striving to improve Yamaha products. Modifications are, therefore, inevitable and changes in specifica-tion are subject to change without notice or obligation to retrofit. Should any discrepancy appear to exist, please contact the distributors ServiceDivision.

WARNING: Static discharges can destroy expensive components. Discharge any static electricity your body may have accumulated bygrounding yourself to the ground bus in the unit (heavy gauge black wires connect to this bus).

IMPORTANT: Turn the unit OFF during disassembly and parts replacement. Recheck all work before you apply power to the unit.

WARNING: CHEMICAL CONTENT NOTICE!The solder used in the production of this product contains LEAD. In addition, other electrical/electronic and/or plastic (Where applicable)components may also contain traces of chemicals found by the California Health and Welfare Agency (and possibly other entities) to causecancer and/or birth defects or other reproductive harm.

DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY REASON WHAT SOEVER!

Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes or expose eyes to solder/fluxvapor!

If you come in contact with solder or components located inside the enclosure of this product, wash your hands before handling food.

IMPORTANT NOTICE FOR THE UNITED KINGDOMConnecting the Plug and Cord

WARNING: THIS APPARATUS MUST BE EARTHEDIMPORTANT. The wires in this mains lead are coloured in accordance with the following code:

GREEN-AND-YELLOW: EARTHBLUE: NEUTRALBROWN: LIVE

As the colours of the wires in the mains lead of this apparatus may not correspond with the coloured markings identifying the terminals in yourplug, proceed as follows:The wire which is coloured GREEN and YELLOW must be connected to the terminal in the plug which is marked by the letter E or by the safetyearth symbol or colored GREEN or colored GREEN and YELLOW.The wire which is coloured BLUE must be connected to the terminal which is marked with the letter N or coloured BLACK.The wire which is coloured BROWN must be connected to the terminal which is marked with the letter L or coloured RED.


3

SPECIFICATIONS Electrical Specifications

General Specifications


4

Analog Input Specifications

Analog Output Specifications

Digital Input/Output Specifications (MG166CX-USB, MG166C-USB only)


5


6

MG166CX-USBMG166C-USB


7

Unit: mmmm

444

478

102

985

496

4341

488.

5

DIMENSIONS

MG166CX-USB


8

PANEL LAYOUT Channel Control Section

MIC Input JacksLINE Input Jacks (monaural channels)LINE Input Jacks (stereo channels)LINE Input Jacks (stereo channels)INSERT JacksGAIN Control 80 Switch (High-Pass Filter)COMP ControlPEAK IndicatorEqualizer (HIGH, MID and LOW)AUX, EFFECT ControlAUX PRE SwitchPAN ControlPAN/BAL ControlBAL ControlON SwitchPFL (Pre-Fader Listen) Switch1-2 Switch3-4 SwitchST SwitchChannel Fader

1

2

3

4

5

6

7

8

9

0

A

B

C

D

E

F

G

H

I

1

2

3

4

5

6

7

8

9

0

A

B

C

D

E

F

G

H

I

MICLINELINELINEINSERTGAIN 80 COMPPEAKEQHIGHMIDLOWAUXEFFECTAUX PREPANPAN/BALBALONPFL1-23-4ST

1

2

1

5

6 6

C

D

F

G

H

I

E

0

A A

9 9

7 7

8

3

4

B

C

D

F

G

H

I

E

0

B

Channels9/10 and 11/12

(Stereo)9/1011/12

Channels1 to 6

(Monaural)16

Channels7 and 8

(Monaural)78

Channels13/14 and 15/16

(Stereo)13/1415/16

* *

* A AUX1, AUX2, EFFECT (MG166CX-USB, MG166CX)AUX1, AUX2, AUX3 (MG166C-USB, MG166C)


9

Digital Effects Section

FOOT SWITCH JackPROGRAM DialPARAMETER ControlAUX ControlON SwitchPFL Switch1-2 Switch3-4 SwitchST SwitchEFFECT RTN Fader

1

2

3

4

5

6

7

8

9

0

FOOT SWITCHPROGRAMPARAMETERAUXONPFL1-23-4STEFFECT RTN

1

2

3

4

5

6

7

8

9

0

4

3

5

0

2

6

1

7

8

9

* Only the MG166CX-USB and MG166CX have digital effects.MG166CX-USBMG166CX


10

Master Control Section

1234567

890ABC

DE

F

GHIJKL

USB Connector (MG166CX-USB/MG166C-USB only)SEND Jacks (AUX, EFFECT)GROUP OUT (1 to 4) JacksREC OUT (L, R) Jacks2TR IN JacksRETURN L (MONO), R JacksSTEREO OUT (L, R) Jacks XLR Jacks LINE JacksMONITOR OUT JacksPHONES JackPHANTOM +48 V SwitchPOWER IndicatorLevel MeterRETURN AUX1, AUX2 Control STEREO ControlMaster SEND Controls (AUX, EFFECT)MONITOR/PHONES MONITOR Switches MONITOR Control2TR IN (MG166CX/MG166C)2TR IN/USB (MG166CX-USB/MG166C-USB) 2TR IN/USB Switch 2TR IN/USB ControlGROUP 1-2 FaderGROUP 3-4 FaderST SwitchSTEREO OUT Master FaderPOWER SwitchAC ADAPTOR IN Connector

1234567

890ABC

DE

F

GH

IJKL

USBMG166CX-USB/MG166C-USBSENDAUXEFFECTGROUP OUT1-4REC OUTLR2TR INRETURN LMONORSTEREO OUTLR XLR LINE MONITOR OUTPHONESPHANTOM +48 VPOWERRETURN AUX12 STEREOSENDAUXEFFECTMONITOR/PHONES2TR INMG166CX/MG166C2TR IN/USBMG166CX-USB/MG166C-USB 2TR IN/USBGROUP 1- 2GROUP 3-4STSTEREO OUTAC ADAPTOR IN

A

B

J

F

0

C

I

G

7

9

5

2

4

8

36

E

D

H

Rear panel

*

*

1

K L

* 2, D AUX1, AUX2, EFFECT (MG166CX-USB, MG166CX)AUX1, AUX2, AUX3 (MG166C-USB, MG166C)


11

Connector Polarities

* These jacks will also accept connection to phone plugs. If you use monaural plugs, the connection will be unbalanced.

Input and Output Jacks Polarities Configurations

MIC INPUT, STEREO OUTPin 1: GroundPin 2: Hot (+)Pin 3: Cold ()

LINE INPUT (monaural channels)GROUP OUT, STEREO OUT, MONITOR OUT, AUX SEND,EFFECT SEND(MG166CX-USB, MG166CX only)*

Tip: Hot (+)Ring: Cold ()Sleeve: Ground

INSERTTip: OutputRing: InputSleeve: Ground

PHONESTip: LRing: RSleeve: Ground

RETURNLINE INPUT (stereo channels)

Tip: HotSleeve: Ground

OUTPUTINPUT

XLR Jack

TipSleeve

Ring

TRS Phone Jack

TipSleevePhone Jack

12+3

+

OutputInput

LR

MIC INPUTSTEREO OUT

LINE INPUTGROUP OUTSTEREO OUTMONITOR OUTAUX SENDEFFECT SENDMG166CX-USBMG166CX

INSERT

PHONES

RETURNLINE INPUT

OUTPUTINPUT

XLR

TRS


12

CIRCUIT BOARD LAYOUT

Rear

(MG166CX-USB)

(MG166CX-USB,MG166CX)

(MG166C-USB)

Front

MIX16XMIX16

JACK16XJACK16

DSP

PS16XPS16

USBUSB


13

WIRING DIAGRAM

7P-1103P-140

5P-160

9P-470

1

2

3

4

(WJ98020)(WJ98040)(WJ98030)

(WJ78440)

MIX16(X)-CN053 PS16(X)-CN101JACK16(X)-CN001 PS16(X)-CN102JACK16(X)-CN051 PS16(X)-CN104

JACK16(X)-CN903 USB-CN101

4050

60

100

MG166CX-USB,MG166CX onlyMG166CX-USB,MG166C-USB only

Remarks

No. Part No. Assembly Name

Connection

Location

Connector Assembly PS7PConnector Assembly PS3P

Connector Assembly PS5P

Connector Assembly USB16

PS7PPS3P

PS5P

USB16

CN101(9P)

CN102(3P)

CN104(5P)

CN101(7P)

CN903(9P)

CN001(3P)W401(9P)

W701(9P)

W801(9P)

W002(9P)

W001(9P)

W003(9P)

W004(6P)

W101(9P)

W201(9P)

W301(9P)

CN401(9P)

CN701(9P)

CN801(9P)

CN002(9P)

CN001(9P)

CN003(9P)

CN004(6P)

CN101(9P)

CN201(9P)

CN301(9P) CN053

(7P)

CNM02(20P)

CN052(20P) CN051

(5P)

PS16X

PS16XUSB

DSP(MG166CX-USB, MG166CX only)

(MG166CX-USB, MG166C-USB only)

USB

MIX16X

MIX16

JACK16X

JACK161

24

3


14

OVERALL ASSEMBLY WIRING The inside room of this product is very little because a lot of units are installed fully.To prevent the panels coming up and other things when assembling, perform the cable connection according to the followings.

1. The wiring of the Inner Chassis Assembly. Assy* 1 The component marked * 1 is used only for the MG166CX-USB and MG166CX.1MG166CX-USBMG166CX

* 2 The components marked * 2 are used only for the MG166CX-USB and MG166C-USB.2MG166CX-USBMG166C-USB

20

180180

* 2

* 2180* 2

100* 2

180* 2

180* 2

90

* 1(CN104)

60(CN102)

50(CN101)

40


15

2. MG166CX-USB, MG166CX The wiring of the MIX16X circuit board and JACK16X circuit board.MIX16XJACK16X

MG166C-USB, MG166C The wiring of the MIX16 circuit board and JACK16 circuit board.MIX16JACK16

2-1. MG166CX-USB, MG166CXInstall the JACK16X circuit board [Ref. 250].JACK16XRef. 250

Note: Pass the connector assembly PS7P [Ref. 40], connector assembly PS3P [Ref. 50] and connector assembly PS5P [* 1Ref. 60] through the incision part of JACK16X circuit board [Ref. 250].

PS7PRef. 40PS3PRef. 50PS5P1 Ref. 60JACK16XRef. 250

Note: Pass the connector assembly USB16 [Ref. 100] through the incision part of JACK16X circuit board [Ref. 250]. USB16Ref. 100JACK16XRef. 250

MG166C-USB, MG166CInstall the JACK16 circuit board [Ref. 250].JACK16Ref. 250

Note: Pass the connector assembly PS7P [Ref. 40] and connector assembly PS3P [Ref. 50] through the incision part ofJACK16 circuit board [Ref. 250].

PS7PRef. 40PS3PRef. 50JACK16Ref. 250

Note: Pass the connector assembly USB16 [Ref. 100] through the incision part of JACK16 circuit board [Ref. 250]. USB16Ref. 100JACK16Ref. 250

Incision part of JACK16(X) circuit boardJACK16XIncision part of JACK16(X) circuit boardJACK16X

250* 2* 2

50 6040* 1* 1

100* 2* 2


16

Whole picture

JACK16(X)CN001

MIX16(X)CN053

MIX16(X)CN101

MIX16(X)CN201

MIX16(X)CN301

MIX16(X)CN801

MIX16(X)CN002

JACK16(X)CN903

JACK16(X)K101

JACK16(X)K103

JACK16(X)K102

MIX16(X)CN051

MIX16(X)CN004

MIX16(X)K051

MIX16(X)CN003

MIX16(X)CN401

MIX16(X)CN701

340

50

40

250

100* 2* 2

* 2* 2

* 2

* 2

* 2

* 2

* 1

* 1* 1

* 1* 1

60

MIX16(X)CN001

2-2. The wiring of the connector assemblies from the Inner Chassis assembly.

MG166CX-USB, MG166CX

100* 2

40

50

60* 1

Ref.No.

Connector AssemblyUSB16Connector AssemblyPS7PConnector AssemblyPS3P

Connector AssemblyPS5P

Part

JACK16X circuit boardCN903MIX16X circuit boardCN053JACK16X circuit boardCN001

MIX16X circuit boardCN051

Wiring Point

Fix the connector assembly with the style pins [Ref. K101, K102] on the JACK16X circuit board.JACK16XRef. K101K102

Fix the connector assembly with the style pin [Ref. K103] on the JACK16X circuit board.JACK16XRef. K103

Pass the connector assembly under the Jumper Wire.Fix the connector assembly with the style pin [Ref. K051] on the MIX16X circuit board.MIX16XRef. K051Pass the right side of K051.K051

Note


17

100* 2

40

50

Ref.No.

Connector AssemblyUSB16Connector AssemblyPS7PConnector AssemblyPS3P

Part

JACK16 circuit boardCN903MIX16 circuit boardCN053JACK16 circuit boardCN001

Wiring Point

Fix the connector assembly with the style pins [Ref. K101, K102] on the JACK16 circuit board.JACK16Ref. K101K102

Fix the connector assembly with the style pin [Ref. K103] on the JACK16 circuit board.JACK16Ref. K103

Note

Note: In the MG166C, bend the K101 and K102 of JACK16 circuit board in the direction where the jumper leads are notinstalled. (See the picture below)

MG166CJACK16K101K102

Note: In the MG166CX, bend the K101 and K102 of JACK16X circuit board in the direction where the jumper leads are notinstalled. (See the picture below)

MG166CXJACK16XK101K102

MG166C-USB, MG166C

JACK16(X)K101

JACK16(X)K102

MIX16(X)CN053

JACK16(X)K103

JACK16(X)CN001

* 2* 2

* 2* 2

50

40

100* 1* 160

JACK16(X)CN903

* 2* 2JACK16(X)

K101

Connector assemblyUSB16

Connector assemblyUSB16

Connector assembly USB16Connector assembly USB16

* 2* 2

* 1* 1

JACK16(X)K102

* 1* 1MIX16(X)CN051

MIX16(X)K051

Connector assembly PS5PConnector assembly PS5P

Connector assembly PS3PConnector assembly PS3PJunper-Wire


18

2-3. MG166CX-USB, MG166CXConnect the ten (10) jumper wires of JACK16X circuit board to the MIX16X circuit board. (MG166CX-USB, MG166CX)JACK16X10MIX16XMG166CX-USBMG166CX

Note: Bend the jumper wires according to the picture above.

Note: After bend, press the jumper wires so that their height from the MIX16X circuit boards component side become 15 mmor less.

MIX15 mm

MG166C-USB, MG166CConnect the ten (10) jumper wires of JACK16 circuit board to the MIX16 circuit board. (MG166C-USB, MG166C)JACK1610MIX16MG166C-USBMG166C

Note: Bend the jumper wires according to the picture above.

Note: After bend, press the jumper wires so that their height from the MIX16 circuit boards component side become 15 mmor less.

MIX15 mm




Junper-Wire


19

MG166CX-USB/MG166CX DISASSEMBLY PROCEDURESMG166CX-USB/MG166CX

1. Top Cover (Time required: 12 min.)1-1 Remove the twelve (12) fader knobs marked [490], three

(3) fader knobs marked [500] and fader knob marked[510] and knob select marked [300]. (Fig. 1)

1-2 Remove the fifteen (15) screws marked [400], sixteen(16) screws marked [410], four (4) screws marked [420],six (6) screws marked [430], thirty-nine (39) hexagonalnuts and thirty-nine (39) washers. (Fig. 1)

1-3 The top cover can then be removed. (Fig. 1)* When installing the top cover on the bottom case

assembly, tighten the screws in the order shown inFig. 1. (Fig. 1)

1. 121-1 490FADER12500FADER3

510FADER540SELECTFig. 1

1-2 4001541016420443063939Fig. 1

1-3 Fig. 1 AssyFig . 1Fig. 1

[400]: Bind Head Tapping Screw-B 3x8 MFZN2B3 (WE774400) B+BIND[410]: Bind Head Tapping Screw-B 3x8 MFZN2B3 (WE774400) B+BIND[420]: Bind Head Screw 3x6 MFZN2B3 (WE878300) +BIND[430]: Bind Head Tapping Screw-B 3x8 MFZN2B3 (WE774400) B+BIND[490]: Fader Knob Black/L-Gray (V9664900) FADER[500]: Fader Knob Red/D-Gray (V9665000) FADER[510]: Fader Knob White/Red (V9665100) FADER[540]: Knob Black (WD233000) SELECT

(Fig. 1)

MG166CX-USB/MG166CX

[490] [500] [510]

[410]

[400]

[420]

M9 Hexagon nut and washerM9

[430]Top cover

Top cover

[400]

[420]

[400][410]

[400]

[540]

[400] Screw tighten (3rd)3

[400] Screw tighten (2nd)2

[400] Screw tighten (1st)1

[400]

[400]


20

2. MIX16XDSPJACK16X18

2-1 12-2 142-3 350143606

Fig. 22-4 8MIX16XDSP

Fig. 22-5 3003JACK16X

Fig. 22-6 3302DSPMIX16X

Fig. 3

HPFWD942200ON AssyWH455200MX16XMX16X

2. MIX16X Circuit Board, DSP Circuit Boardand JACK16X Circuit Board(Time required: 18 min.)

2-1 Remove the top cover. (See procedure 1.)2-2 Disconnect the fourteen (14) connectors.2-3 Remove the fourteen (14) screws marked [350] and a

hexagonal spacer marked [360]. (Fig. 2)2-4 Release the eight (8) hooks and remove the MIX16X

circuit board with DSP circuit board. (Fig. 2)2-5 Remove the three (3) screws marked [300] and remove

the JACK16X circuit board. (Fig. 2)2-6 Remove the two (2) screws marked [330] and separate

the DSP circuit board from the MIX16X circuit board.(Fig. 3)* At this time, use care not to apply stress to the con-

nector being connected.* The buttons, knobs, knob black (WD942200), but-

ton on assembly (WH455200) are not componentsof the MX16X circuit board. When replacing theMX16X circuit board, remove these components fromthe old circuit board and install them on the new cir-cuit board.

[350]

[300]

JACK16X

MIX16X

DSPHook

Hook

[350]

[350]

Hook

Hook

Priority Screw

Hook

[350]

[350]

[330]

DSPMIX16X

MG166CX-USB/MG166CX

[300]: Bind Head Tapping Screw-B 3x8 MFZN2W3 (WE774300)B+BIND


(Fig. 2)

(Fig. 3)

[330]: Bind Head Tapping Screw-B 3x8 MFZN2W3 (WE774300) B+BIND


21

3. PS16X183-1 1

3-2 MIX16XDSPJACK16X2

3-3 190320032203AssyUSBAssyMG166CX-USBFig. 4

3-4 3

3-5 80470AssyFig. 5

3-6 403506PS16XFig. 5

3. PS16X Circuit Board (Time required: 18 min.)3-1 Remove the top cover. (See procedure 1.)3-2 Remove the MIX16X circuit board, DSP circuit board

and JACK16X circuit board. (See procedure 2.)3-3 Remove the three (3) screws marked [190], three (3)

screws marked [200] and three (3) screws marked [220].The inner chassis with heatsink assembly and USB as-sembly (MG166CX-USB only) can be removed. (Fig. 4)

3-4 Disconnect the three (3) connectors.3-5 Remove the four (4) screws marked [80] and screw marked

[70]. Then remove the heatsink assembly. (Fig. 5)3-6 Remove the three (3) screws marked [40] and six (6)

screws marked [50] and separate the PS16X circuitboard from the heatsink. (Fig. 5)

(Fig. 5)

[200]

[220]

[200]

[190][190] [190]Priority Screw

Inner chassis with heatsink assembly and USB assembly(MG166CX-USB only)

Ass'yUSB Ass'yMG166CX-USB

Heatsink assemblyAss'y

Heatsink

[80] [80]

Priority Screw

[70]

[40][40]

[50]

[50]

PS16X



[70]: Bind Head Tapping Screw-B 3x8 MFZN2B3 (WE774400)B+BIND


MG166CX-USB/MG166CX



[220]: PW Head Tapping Screw-B 3x8 MFZN2W3 (WF002600)B+PWH

(Fig. 4)


22

4. USB Circuit Board (MG166CX-USB only)(Time required: 18 min.)

4-1 Remove the top cover. (See procedure 1.)4-2 Remove the MIX16X circuit board, DSP circuit board

and JACK16X circuit board. (See procedure 2.)4-3 Remove the two (2) screws marked [110] and remove

the USB assembly. (Fig. 6)4-4 Unsolder the shield USB mounting solder (2 locations)

and separate the shield USB from the USB circuit board.(Fig. 6)* The shield USB is not a component of the USB cir-

cuit board. When replacing the USB circuit board,remove the shield USB from the old circuit boardand install it on the new circuit board.

4. USBMG166CX-USB18

4-1 1

4-2 MIX16XDSPJACK16X2

4-3 1102USB AssyFig. 6

4-4 2USBUSBFig. 6

USBUSBUSBUSB

[110]: Bind Head Tapping Screw-B 3x8 MFZN2B3 (WE774400) B+BIND

(Fig. 6)

Shield USB

USBSolder

USB assembly

USB Ass'y

USB

[110]

[110]

Priority Screw

MG166CX-USB/MG166CX

23

MG166CX-USB/MG166CX/MG166C-USB/MG166CMG166C-USB/MG166C

MG166C-USB/MG166C DISASSEMBLY PROCEDURESMG166C-USB/MG166C

1. Top Cover (Time required: 12 min.)1-1 Remove the twelve (12) fader knobs marked [490], two

(2) fader knobs marked [500] and fader knob marked[510]. (Fig. 1)

1-2 Remove the fifteen (15) screws marked [400], sixteen(16) screws marked [410], three (3) screws marked [420],six (6) screws marked [430], thirty-eight (38) hexagonalnuts and thirty-eight (38) washers. (Fig. 1)

1-3 The top cover can then be removed. (Fig. 1)* When installing the top cover on the bottom case

assembly, tighten the screws in the order shown inFig. 1. (Fig. 1)

1. 121-1 490FADER12500FADER2

510FADERFig. 11-2 40015410164203

43063838Fig. 1

1-3 Fig. 1 AssyFig . 1Fig. 1

[400]: Bind Head Tapping Screw-B 3x8 MFZN2B3 (WE774400) B+BIND[410]: Bind Head Tapping Screw-B 3x8 MFZN2B3 (WE774400) B+BIND[420]: Bind Head Screw 3x6 MFZN2B3 (WE878300) +BIND[430]: Bind Head Tapping Screw-B 3x8 MFZN2B3 (WE774400) B+BIND[490]: Fader Knob Black/L-Gray (V9664900) FADER[500]: Fader Knob Red/D-Gray (V9665000) FADER[510]: Fader Knob White/Red (V9665100) FADER

(Fig. 1)

[490] [500] [510]

[410]

[400]

[420]

M9 Hexagon nut and washerM9

[400]

[430]Top cover

Top cover

[400]

[400]

[400]

[400][410]

[400] Screw tighten (3rd)3

[400] Screw tighten (2nd)2

[400] Screw tighten (1st)1

24


2. MIX16JACK1618

2-1 1

2-2 35014Fig. 2

2-3 8MIX16Fig. 2

2-4 3003JACK16Fig. 2

HPFWD942200ON AssyWH455200MX16MX16

2. MIX16 Circuit Board and JACK16 Circuit Board(Time required: 18 min.)

2-1 Remove the top cover. (See procedure 1.)2-2 Remove the fourteen (14) screws marked [350]. (Fig. 2)2-3 Release the eight (8) hooks and remove the MIX16 cir-

cuit board. (Fig. 2)2-4 Remove the three (3) screws marked [300] and remove

the JACK16 circuit board. (Fig. 2)* The buttons, knobs, knob black (WD942200), but-

ton on assembly (WH455200) are not componentsof the MX16 circuit board. When replacing the MX16circuit board, remove these components from theold circuit board and install them on the new circuitboard.

[350]

[300]

JACK16

MIX16

Hook

Hook

Priority Screw

Hook

[350]

[350]Hook

Hook

[350]

[350]

MG166C-USB/MG166C

[300]: Bind Head Tapping Screw-B 3x8 MFZN2W3 (WE774300) B+BIND[350]: Bind Head Tapping Screw-B 3x8 MFZN2W3 (WE774300) B+BIND

(Fig. 2)

MIX16

25


[200]

[220]

[200]

[190][190] [190]Priority Screw

Inner chassis with heatsink assembly and USB assembly(MG166C-USB only)

Ass'yUSB Ass'yMG166C-USB

MG166C-USB/MG166C

3. PS16183-1 1

3-2 MIX16JACK162

3-3 190320032203AssyUSBAssyMG166C-USBFig. 3

3-4 80470AssyFig. 4

3-5 403505PS16Fig. 4

3. PS16 Circuit Board (Time required: 18 min.)3-1 Remove the top cover. (See procedure 1.)3-2 Remove the MIX16 circuit board and JACK16 circuit

board. (See procedure 2.)3-3 Remove the three (3) screws marked [190], three (3)

screws marked [200] and three (3) screws marked [220].The inner chassis with heatsink assembly and USB as-sembly (MG166C-USB only) can be removed. (Fig. 3)

3-4 Remove the four (4) screws marked [80] and screw marked[70]. Then remove the heatsink assembly. (Fig. 4)

3-5 Remove the three (3) screws marked [40] and five (5)screws marked [50] and separate the PS16 circuit boardfrom the heatsink. (Fig. 4)

Heatsink

[70]

[40][40]

[50]

[50]

PS16

[80] [80]

Priority Screw

Heatsink assemblyAss'y

(Fig. 4)







[220]: PW Head Tapping Screw-B 3x8 MFZN2W3 (WF002600)B+PWH

(Fig. 3)

26


4. USB Circuit Board (MG166C-USB only)(Time required: 18 min.)

4-1 Remove the top cover. (See procedure 1.)4-2 Remove the MIX16 circuit board and JACK16 circuit

board. (See procedure 2.)4-3 Remove the two (2) screws marked [110] and remove

the USB assembly. (Fig. 5)4-4 Unsolder the shield USB mounting solder (2 locations)

and separate the shield USB from the USB circuit board.(Fig. 5)* The shield USB is not a component of the USB cir-

cuit board. When replacing the USB circuit board,remove the shield USB from the old circuit boardand install it on the new circuit board.

4. USBMG166C-USB18

4-1 1

4-2 MIX16XJACK16X2

4-3 1102USB AssyFig. 5

4-4 2USBUSBFig. 5

USBUSBUSBUSB

[110]: Bind Head Tapping Screw-B 3x8 MFZN2B3 (WE774400) B+BIND

(Fig. 5)

MG166C-USB/MG166C

Shield USB

USBSolder

USB assembly

USB Ass'y

USB

[110]

[110]

Priority Screw

27


LSI PIN DESCRIPTION LSICONTENTS

AK5381VT-E2 (X5219A00) ADC (Analog to Digital Converter) ............ 27 MX23L8103TC-90G (X5922A00) CPU ..................................................... 28 PCM1742KEG/2K (X3538A00) DAC (Digital to Analog Converter) ...... 27 PCM2900E/2K (X7143A00) CODEC ........................................................ 28 YMW767-VTZ (X6055A00) CPU .............................................................. 29

AK5381VT-E2 (X5219A00) ADC (Analog to Digital Converter) DSP: ICM04

12345678

AINRAINLCKS1VCOMAGND

VAVD

DGND

Rch analog input pinLch analog input pinMode select 1 pinCommon voltage output pinAnalog groundAnalog power supplyDigital power supplyDigital ground

IIIO-

-

-

-

PINNo. NAME FUNCTIONI/O

PINNo. NAME I/O FUNCTION

910111213141516

SDTOLRCKMCLKSCLKPDNDIF

CKS2CKS0

OI/O

II/O

IIII

Audio serial data output pinOutput channnel clock pinMaster clock input pinAudio serial data clock pinPower down mode pinAudio interface format pinMode select 2 pinMode select 0 pin

PCM1742KEG/2K (X3538A00) DAC (Digital to Analog Converter) DSP: ICM08

123

45678

BCKDATALRCK

DGNDVDDVcc

VOUTLVOUTR

Audio data bit clock inputAudio data digital input.L-channel and R-channel audio data latch enableinputDigital groundDigital power supply, +3.3 VAnalog power supply, +5 VAnalog output for L-channelAnalog output for R-channel

III

-

-

-

OO



91011

1213141516

AGNDVCOM

ZEROR/ZEROA

ZEROL/NAMDMCML

SCK

-

-

O

OIIII

Analog groundCommon voltage decoupling.Zero flag output for R-channel/Zero flag outputfor L/R-channelZero flag output for L-channel/No assignMode control data InputMode control clock inputMode control latch inputSystem clock input

Note:(1) Schmitt trigger input, 5V tolerant.(2) Schmitt trigger I/O with internal pull-down, 5V tolerant.

28


Address bus

(Unused)

Address bus

Address busChip enableGroundOutput enable

Data bus

Power supply +3.3 V

Data bus

Data bus / LSB addressGroundWord/byte mode selectionAddress bus

FUNCTION

MX23L8103TC-90G (X5922A00) CPU DSP: ICM10

123456789

101112131415161718192021222324

A15A14A13A12A11A10A9A8

(N.C.)(N.C.)(N.C.)(N.C.)(N.C.)(N.C.)(N.C.)A18A17A7A6A5A4A3A2A1

IIIIIIII-

-

-

-

-

-

-

IIIIIIIII

PINNo. NAME I/O


252627282930313233343536373839404142434445464748

A0CE#VSSOE#D0D8D1D9D2

D10D3

D11VCCD4

D12D5

D13D6

D14D7

D15/A-1VSS

BYTE#A16

II-

IOOOOOOOO-

OOOOOOO

I/O-

-

I

USB differential input/output plusUSB differential input/output minusConnect to USB power (VBUS)Digital ground for USB transceiverHID key state input(mute), active highHID key state input(volume up),active highHID key state input(volume down),active highMust be set to highMust be set to highInternal analog power supply for codecAnalog ground for codecADC analog input for L-channelADC analog input for R-channelCommon for ADC/DAC(VCCCI/2)

DAC analog output for R-channelDAC analog output for L-channelInternal analog power supply for PLLAnalog ground for PLLInternal analog power supply for PLLCrystal oscillator outputCrystal oscillator inputAnalog ground for oscillatorInternal analog power supply for oscillatorTest pin, must be connected to GNDTest pin, must be left openDigital gronudInternal digital power supplySuspend flag, active low(Low: suspend, High: operational)

FUNCTION

PCM2900E/2K (X7143A00) CODEC USB: IC101

123456789

1011121314

D+D-

VBUSDGNDU

HID0HID1HID2SEL0SEL1

VCCCIAGNDC

VINLVINR

VCOM

I/OI/O-

-

IIIII-

-

II-

PINNo. NAME I/O


1516171819202122232425262728

VOUTRVOUTLVCCP1IAGNDPVCCP2I

XTOXTI

AGNDXVCCXITEST0TEST1DGNDVDDI

SSPND

OO-

-

-

OI-

-

IO-

-

O

29


123456789

10111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364

VssTESTN

PLLBPNPLLVDD

CINPLLVssTRSTN

TMSTCKTDITDO

XIXOVssVDDICN

ECSNEWRN/PD5ERDN/PD4EA3/PD3EA2/PD2EA1/PD1EA0/PD0

IOVDDED0/PC0ED1/PC1ED2/PC2ED3/PC3ED4/PC4ED5/PC5ED6/PC6ED7/PC7

VssIRQ0N/PH0

TxD0RxD0

TxD1/PG2RxD1/PH1SCLK1/PH2

SDOSDI/PH3

BCLKWCLK/SYOSYSCLK/PG3

VssVDD

IOVDDPA0PA1PA2PA3PA4PA5PA6PA7VssPB0PB1PB2PB3PB4PB5PB6

PB7/SYI

GroundInput for testPLL bypass selectPLL power supply +2.5 VCapacitor terminal for PLLPLL ground

JTAG input

JTAG outputCrystal oscillatorCrystal oscillatorGroundPower supply +2.5 VHardware resetCPU I/F chip selectCPU I/F write enable / Port DCPU I/F read enable / Port D

CPU I/F address bus / Port D

Power supply +3.3 V

CPU I/F data bus / Port C

GroundInterrupt input / Port HSerial outputSerial inputSerial output / Port GSerial input / Port HExternal synchronization clock / Port HSerial outputSerial input / Port HBit clock outputWord clock outputClock output / Port GGroundPower supply +2.5 VPower supply +3.3 V

I/O port A

Ground

I/O port B

-

II-

-

-

IIIIOIO-

-

IIIIIIII-

I/OI/OI/OI/OI/OI/OI/OI/O-

IOIOIIOIOOO-

-

-

I/OI/OI/OI/OI/OI/OI/OI/O-

I/OI/OI/OI/OI/OI/OI/OI/O



6566676869707172737475767778798081828384858687888990919293949596979899

100101102103104105106107108109110111112113114115116117118119120121122123124125126127128

VssIOVDD

LBN/LWRN/PF6UBN/UWRN/PF7RDN/PF4

MD00MD08MD01MD09MD02MD10MD03Vss

MD11MD04MD12MD05MD13MD06MD14MD07MD15

WRN/PF5VssVDD

IOVDDMA17MA16MA15MA14MA13MA12MA11MA10MA09MA08MA07MA06MA05Vss

MA04MA03MA02MA01

CS0N/PG0MA18MA19

MA21/PF1MA22/PF2

MA20MA23/PF3CSIN/PG1MA00/PF0

VssVDD

IOVDDCS2N/PE0CS3N/PE1CS4N/CASN/PE2CS5N/PE3CS50RDN/PE4CS51WRN/PE5CS52WRN/PE6CS53WRN/RASN/PE7

-

-

OOO

I/OI/OI/OI/OI/OI/OI/O-

I/OI/OI/OI/OI/OI/OI/OI/OI/OO-

-

-

OOOOOOOOOOOOO-

OOOOOOOOOOOOO-

-

-

OOOOOOOO

GroundPower supply +3.3 VExternal memory lower-byte enable / Port FExternal memory upper-byte enable / Port FExternal memory read enable / Port F

External memory data bus

Ground

External memory data bus

GroundPower supply +2.5 VPower supply +3.3 V

External memory address bus

Ground

External memory address bus

External memory chip select / Port GExternal memory address bus

External memory address bus / Port FExternal memory address busExternal memory address bus / Port FExternal memory chip select / Port GExternal memory address bus / Port FGroundPower supply +2.5 VPower supply +3.3 V

External memory chip select / Port E

YMW767-VTZ (X6055A00) CPU (SWLO1B) DSP: ICM07

30


IC BLOCK DIAGRAM IC

NJM2068M-D (TE2) (X3505A00)Dual Operational AmplifierJACK16: IC702, 752MIX16: IC001, 003, 901, 902, 951, 952, ICM01USB: IC103, 104

KIA7812API (X4153A00)Regulator +12VPS16: IC105

NJM072BM-E (TE1) (X4543A00)Dual Operational AmplifierJACK16: IC101, 201, 301, 401

PST596DNR (X0165A00)System ResetDSP: ICM03

+

M/R 1

SUB 2

GND 3

5

4

Vcc

VOUT

Vcc 5

M/R 1

4

3

2

VOUT

GND

SUB

DelayOSC

R

T Q

1

2

3

4 -V

8

7

6

5

Output A +V

Non-InvertingInput A

-DC Voltage Supply

+DC VoltageSupplyOutput B

InvertingInput BNon-InvertingInput B

InvertingInput A +-

+ -

R1

R2

R3

R4 R5 R6

R7

R8

Z1

Q12

Q13

Q18

Q17Q14

Q19

Q10

Q8

Q16

INPUT

OUTPUT

COMMON (GND)

Q15Q11-1Q11

Q2

Q3Q4

Q5 Q9

Q7

Q1 Q6R12

R19R10

R9

R15 R14

R16

R21

R20

R22 R23R17

R13

R11 R18C1

1

3

2

V-

V+

+INPUT

-INPUTOUTPUT

31


KIA7915PI (X4931A00)Regulator -15VPS16: IC102, 104

KIA7805API/P (X4928A00)Regulator +5VPS16: IC106, 107

KIA7815API (X4930A00)Regulator +15VPS16: IC101, 103

R1

R2

R3

R4 R5 R6

R7

R8

Z1

Q12

Q13

Q18

Q17Q14

Q19

Q10

Q8

Q16

INPUT

OUTPUT

COMMON (GND)

Q15Q11-1Q11

Q2

Q3Q4

Q5 Q9

Q7

Q1 Q6R12

R19R10

R9

R15 R14

R16

R21

R20

R22 R23R17

R13

R11 R18C1

1

3

2

R1

R2

R3

R4 R5 R6

R7

R8

Z1

Q12

Q13

Q18

Q17Q14

Q19

Q10

Q8

Q16

INPUT

OUTPUT

COMMON (GND)

Q15Q11-1Q11

Q2

Q3Q4

Q5 Q9

Q7

Q1 Q6R12

R19R10

R9

R15 R14

R16

R21

R20

R22 R23R17

R13

R11 R18C1

1

3

2

GND(1)

(3)

(2)

R12R13

R23

R22R21R18R15

R16

Q17

R1

R14

Q18

R17 R19 Q31

R20

Q21

Q23

Q25

R24

R25

R26

Q8Q9

R4

Q12 Q13

Q26-1 Q27-1 Q27D4

C1C2

Q10Q11

R6R9

Q14Q15

R10

R11

Q16

R8INPUT

OUTPUT

R7

R5

R3

Q26

Q20

Q19

Q7

Q4Q5 Q6

R2

Q2 Q3

Q28

Q29

Q30

R0

Q24

Q22

32


NJM4580M-D (TE2) (X5025A00)Dual Operational AmplifierJACK16: IC071, 072, 701, 751

BA10339F (X6266A00)ComparatorMIX16: ICM06-11

BA4560RF-E2 (X6897A00)Dual Operational AmplifierJACK16: IC001, 021, 102, 103, 153, 202, 203, 253,

IC302, 303, 353, 402, 801, 851MIX16: IC002, 101, 102, 151, 201, 202, 251

IC301, 302, 351, 401, 402, 451IC701, 702, 751, 752, 801, 802IC851, 852, 903-905, ICM03

BA00CC0WFP-E2 (X7256A00)Regulator 3V to 15VUSB: IC102

NJM4565M (TE1) (X7378A00)Dual Operational AmplifierDSP: ICM09, 11JACK16: IC104, 204, 304MIX16: IC051, ICM02, 05

V+

INPUT+INPUT

V

OUTPUT

8

2, 6

3, 5

1, 7

4

+

+

+

+

OUT2 1

OUT1 2

Vcc 3

IN1 4

+IN1 5

IN2 6

+IN2 7

14

13

12

11

10

9

8

OUT3

OUT4

GND

+IN4

IN4

+IN3

IN3

+

+

8 7 6 5

1 2 3 4

OUT1 + IN1- IN1 VEE

VCC OUT2 + IN2- IN2

Ch1

Ch2

VCC

Vref

OVP

2

1 5

4

3

FIN

TSD OCP

DriverVOUT

CTL GND

N.C.

+-

C

8

2, 6

3, 51, 7

4

V+

INPUT+INPUT

V

OUTPUT

VOUTNOISE 3 4

GND 2

CONT 1 VIN5

8

2, 6

3, 51, 7

4

V+

INPUT+INPUT

V

OUTPUT

TAR5S33 (TE85L, F) (XZ642A00)Regulator +3.3VDSP: ICM06

VOUTNOISE 3 4

GND 2

CONT 1 VIN5

TAR5S25U (TE85L, F) (X8138A00)Regulator +2.5VDSP: ICM12

NJM4556AL (XP844A00)Dual Operational AmplifierMIX16: ICM04

33


CONTENTS DSP Circuit Board (X7687D0) ........................................... 33 JACK16X/JACK16 Circuit Board (X8282C0) ........................................... 36 MIX16X/MIX16 Circuit Board (X8281C0) ........................................... 40 PS16X/PS16 Circuit Board (X8285C0) ........................................... 34 USB Circuit Board (X7196C0) ........................................... 35

CIRCUIT BOARDS

Note: See parts list for details of circuit board component parts.

to MIX16 CN052

DSP Circuit Board

Component side

Pattern side

2NA-WH10870

MG166CX-USB/MG166CX

34


to JACK16 CN001

to MIX16 CN051

to MIX16 CN053

2NA-WJ98970 2

PS16X/PS16 Circuit Board

Component side

MG166CX-USB/MG166CX MG166C-USB/MG166C


35

to JACK16 CN903

USB

USB Circuit Board

Component side

Pattern side

2NA-WG33610

MG166CX-USB MG166C-USB


36

to MIX16 CN101 to MIX16 CN201 to MIX16 CN301 to MIX16 CN401

A

A'

JACK16X/JACK16 Circuit Board

2NA-WJ26360 1

Component side

Reduction: 4/5



37

CN401 to MIX16 CN701

to MIX16 CN801to MIX16 CN002

to MIX16 CN001 to MIX16 CN003 to MIX16 CN004to PS16 CN102

to USB CN101

A

A'

2NA-WJ26360 1

Component side

Reduction: 4/5



38

B

B'

Pattern side

2NA-WJ26360 1

JACK16X/JACK16 Circuit Board

Reduction: 4/5



39

B

B'

2NA-WJ26360 1

Pattern side

Reduction: 4/5



40

to JACK16 W101 to JACK16 W201 to JACK16 W301

to JACK16 W401

to JA

A'

MIX16X/MIX16 Circuit Board

Component side 2NA-WJ26330

Reduction: 3/5



41

401

to JACK16 W701

to JACK16 W801

to JACK16 W002

to JACK16 W001to DSP CNM02 to PS16 CN104

to JACK16 W003to JACK16 W004

to PS16 CN101

A

A' Component side 2NA-WJ26330

Reduction: 3/5



42

B

B'

Pattern side

MIX16X/MIX16 Circuit Board

2NA-WJ26330

Reduction: 3/5



43

B

B'

Pattern side 2NA-WJ26330

Reduction: 3/5



44

INSPECTIONS1. Measurement Conditions1-1 Environment

Temperature: From 5 C to 40 C. Humidity: From 30 % to 90 %.

1-2 Power SourceThe voltage is within 10 %. AC adaptor PA-30 should be used. U : 120 V (WE524200) H : 230 V (WE523900) B : 230 V (WE523700) A : 240 V (WE523600) K : 220 V (WE524100) O : 220 V (WE523800)

1-3 Application software of USB AUDIOUse an application software that can be set as follows.

Sampling rate : 48 kHz or 44.1 kHzResolution : 16 bits

2. Mixer Check2-1 Preparation

The load resistances for each output terminals are as follows:PHONES (L/R) : 40 (=3 W or more than 3 W)ST OUT : 600 Others : 10 k

2-2 Unless otherwise specified, the controls should be set as follows: CH INPUT (1-8)

GAIN control Maximum (-60/-34 dBu) 80 switch OFFCOMP control (CH1-6) MinimumEQ (HIGH, MID, LOW) GAIN control CENTEREQ MID frequency control MinimumAUX1, AUX2, AUX3 level control Maximum

(MG166C-USB, MG166C)AUX1, AUX2, EFFECT level control Maximum

(MG166CX-USB, MG166CX)AUX2 PRE switch OFF (POST)PAN control L (turned counterclockwise fully)ON switch ON (indicator should light) when taking measurement only

/ OFF otherwisePFL switch ON when taking measurement only / OFF otherwise1-2, 3-4 switch ON when taking measurement only / OFF otherwiseST switch ON when taking measurement only / OFF otherwiseChannel fader Maximum

ST INPUT (9/10, 11/12)GAIN control Maximum (-60/-34 dBu) 80 switch OFFEQ (HIGH, MID, LOW) GAIN control CENTERAUX1, AUX2, AUX3 level control Maximum


(MG166CX-USB, MG166CX)AUX2 PRE switch OFF (POST)PAN/BAL control L (turned counterclockwise fully)ON switch ON (indicator should light) when taking measurement only

/ OFF otherwise


45

PFL switch ON when taking measurement only / OFF otherwise1-2, 3-4 switch ON when taking measurement only / OFF otherwiseST switch ON when taking measurement only / OFF otherwiseChannel fader Maximum

ST INPUT (13/14, 15/16)EQ (HIGH, LOW) GAIN control CENTERAUX1, AUX2, AUX3 level control Maximum


(MG166CX-USB, MG166CX)AUX2 PRE switch OFF (POST)BAL control L (turned counterclockwise fully)ON switch ON (indicator should light) when taking measurement only

/ OFF otherwisePFL switch ON when taking measurement only / OFF otherwise1-2, 3-4 switch ON when taking measurement only / OFF otherwiseST switch ON when taking measurement only / OFF otherwiseChannel fader Maximum

DIGITAL EFFECT (MG166CX-USB, MG166CX)PROGRAM dial 1PARAMETER control MinimumAUX1, AUX2 level control Maximum when taking measurement only / MIN. otherwiseON switch ON (indicator should light) when taking measurement only

/ OFF otherwisePFL switch ON when taking measurement only / OFF otherwise1-2, 3-4 switch ON when taking measurement only / OFF otherwiseST switch ON when taking measurement only / OFF otherwiseEFFECT RTN fader Maximum when taking measurement only / MIN. otherwise

MASTER controlGROUP1-2, 3-4 Master fader (STEREO) MaximumGROUP1-2, 3-4 TO ST ASSIGN switch OFFSTEREO Master fader (STEREO) MaximumAUX1, AUX2, AUX3 SEND Master level control Maximum

(MG166C-USB, MG166C)AUX1, AUX2, EFFECT SEND Master level control Maximum

(MG166CX-USB, MG166CX)RETURN TO AUX1, AUX2 ST level control MaximumMONITOR/PHONES level control MaximumSTEREO/GROUP switch STEREO (OFF)1-2/3-4 switch 1-2 (OFF)2TR IN/USB level control MinimumTO STEREO/TO MONITOR switch OFF (TO STEREO)

OTHERSPHANTOM switch OFF

2-3 The input signal should be 1 kHz sine wave unless otherwise specified.2-4 The input signal impedance should be 150 . (Balance input)2-5 Power indicator

When turning on the power, check the power indicator lights up.2-6 Gain

With controls set as specified in the section 2-2, check the output levels are in the range specified in the table 2-6-1 to 2-6-6.


46

*1 Measure with the PAN or BAL control set at the center position.For others, turn the PAN control counterclockwise fully for the ST L and the oddnumber of GROUP OUT and turn it clockwise fully for the ST R and the even number of GROUP OUT.

*2 PFL switch to ON.*3 Set the 1-2 (3-4) switch to ON and the ST/GROUP Select switch to GROUP. Measure only the case of CH1.*4 CH ST switch OFF, CH1 GROUP 1-2, 3-4 switches ON, GROUP (1-2/3-4) ST switch ON, Measure only the case of CH1.*5 The difference in level between channels should be 2 dB or less.

Table 2-6-1 CH INPUT 1-8

0

Table 2-6-2 CH INPUT 1-8

MIC 1-8CH INSERT IN 1

CH INSERT IN 2-8

-80 dBu+0 dBu+0 dBu

Max.UnspecifiedUnspecified

-20 2 dBu-

-

1-8-

+2.2 2 dBu+2.2 2 dBu

L-

+2.2 2 dBu-

INPUT INPUT LEVEL GAIN INSERT OUT REC OUT R

2

A

Table 2-6-3 Input Terminal STEREO IN

MIC

LINE

9/10,11/12

9L/mono,11L/mono10R, 12R

-80 dBu-36 dBu

-54 dBu

+1.5 2 dBu *1+1.5 2 dBu *1

+4 2 dBu

-

+1.5 2 dBu *1-

-

+4 2 dBu

+9 2 dBu-

-

-

-1 2 dBu-

-

-

+9 2 dBu-

-

-

+0 2 dBu-

-

-

INPUTCH

INPUTLEVEL

L R PRE OFF PRE ONMax.Min.

Max.

+4 2 dBu-

-

-

+4 2 dBu-

-

-

1/3 2/4

Table 2-6-4 Input Terminal STEREO IN

5

6

Table 2-6-5 Input Terminal RETURN L, R

L/MONOR +0 dBu

+16 2 dBu-

+16 2 dBu+16 2 dBu

+15 2 dBu+9 2 dBu

L RINPUTINPUTLEVEL AUX1, AUX2 SEND

ST OUT

ST OUT *6 MONITOR OUT *7 PHONES *7

7

8

Table 2-6-6 Input Terminal 2TR IN L, R

LR -27.8 dBu

+0 2 dBu-

L-

+0 2 dBu

RINPUTINPUTLEVEL

+6 2 dBu-

L-

+6 2 dBu

R-5.5 2 dBu

-

L-

-5.5 2 dBu

R

INPUT

-1 2 dBu-

-

-

1

9

MIC

LINE

-80 dBu

-36 dBu-10 dBu

Max.

Min.Min.

+1.5 2 dBu *1+14 2 dBu *4

+4 2 dBu+4 2 dBu

+1.5 2 dBu *1+14 2 dBu *4

-

-

+4 2 dBu-

-

-

+6 2 dBu-

-

-

-4 2 dBu-

-

-

+6 2 dBu-

-

-

+20 2 dBu-

-

-

+0 2 dBu-

-

-

+20 2 dBu-

-

-

INPUT INPUTLEVEL GAIN

L R PRE OFF PRE ON-4 2 dBu

-

-

-

ST OUT GROUPOUT1-2/3-4

AUX2 SENDAUX3 SEND

(MG166C-USB, MG166C)EFFECT SEND

(MG166CX-USB, MG166CX)

MONITOROUT (L, R)

MONITOROUT (L, R)

*2

MONITOROUT (L, R)

*3

AUX1SEND

3

4

PHONEJACKPIN

JACK

13L, 15L14R, 16R13L, 14L15R, 16R

-30 dBu

+4 2 dBu-

+4 2 dBu-

-

+4 2 dBu-

+4 2 dBu

+3 2 dBu+3 2 dBu

-

-

-7 2 dBu-7 2 dBu

-

-

+3 2 dBu+3 2 dBu

-

-

+0 2 dBu (L)+0 2 dBu (R)

-

-

INPUTCH

INPUTLEVEL

L R PRE OFF PRE ON+4 2 dBu

-

-

-

-

+4 2 dBu-

-

1/3 2/4

INPUT

-7 2 dBu-7 2 dBu

-

-

AUX3 SEND(MG166C-USB, MG166C)

EFFECT SEND(MG166CX-USB, MG166CX)

MONITOROUT (L, R)

*2

AUX2 SENDAUX1SEND

ST OUT GROUP OUT

*6 Measure with the 2TR IN/USB level control set at Maximum position.*7 Measure the MONITOR OUT and PHONES OUT with the 2TR IN/USB switch set at ON (TO MONITOR) position.

GAINAUX3 SEND



ST OUT MONITOROUT (L, R)*2

GROUP OUT AUX1SEND

AUX2 SEND


47

2-7 Frequency CharacteristicIn the signal route 1 to 8 specified in the table 2-6-1 to 2-6-6, check the 20 Hz and 20 kHz frequency response of each outputis within the range of +1/-2.5 dB compared with the 1 kHz (0 dB).* When the GAIN control is set to maximum, only 20 Hz frequency response is within the range of +1/-4.5 dB compared with

the 1 kHz (0 dB).* In the signal route 1, check every OUT when the signal is input to CH1, and check only the ST L OUT when the signal is

input to CH2 and other channels.* In the signal route 2 to 8 check only the ST L OUT and the ST R OUT.

2-8 HPFWith controls set as specified in the table 2-6-1 and 2-6-3, set the GAIN control minimum and input 80 Hz, -36 dBu signal tothe input terminal. Set the 80 switch on and then check the output level obtained at ST L OUT is within the range of -3 2 dBcompared with the output level obtained when 80 switch is off.

2-9 Channel Equalizer CharacteristicsWith controls set as specified in the section 2-2, move each equalizer gain control (HIGH, MID, LOW) respectively and checkthe output level obtained at GROUP1 OUT and GROUP2 OUT for each frequency is within the range specified in the table 2-9-1 and 2-9-2 compared with the output level obtained when each equalizer gain control is at center click position.If the output level is out of range, change the input frequency within the range of 20 % and check the output level is within therange specified in the table 2-9-1 and 2-9-2.

Table 2-9-1 CH (1-8)

2-10 CrosstalkSet ON switch and ST switch of each input channel to ON, and turn the PAN control (PAN/BAL or BAL control in case of ST CHINPUT) counterclockwise fully, check the leakage signal level obtained at ST R OUT is -50 dBu or less when the output levelobtained at ST L OUT is +20 dBu.Also turn the PAN (PAN/BAL, BAL) control clockwise fully, check the leakage signal level obtained at ST L OUT is -50 dBu orless when the output level obtained at ST R OUT is +20 dBu.

2-11 PEAK indicator light-up levelWith controls set as specified in the section 2-2, input signal to the CH INPUT MIC and ST INPUT MIC. Then check the inputlevel is within the range specified in table 2-11 when the PEAK indicator lights up.

Table 2-11

Equalizer gain controlMax.Min.Max.Min.Max.Min.

Input frequency

10 kHz

2.5 kHz

100 Hz

Variation width+12 2 dB-12 2 dB+15 2 dB-15 2 dB+12 2 dB-12 2 dB

Equalizer control

HIGH

MID

LOW

INPUTMIC (CH1-8)ST CH MIC

(CH 9/10, CH11/12)

PEAK indicator-43 3 dBu

-49 3 dBu

Table 2-9-2 CH (9/10-15/16)

Equalizer gain controlMax.Min.Max.Min.Max.Min.Max.Min.

frequency control-

-

Max.

Min.

-

-

Variation width+12 2 dB-12 2 dB

+15 2.5 dB-15 2.5 dB+15 2.5 dB-15 2.5 dB+12 2 dB-12 2 dB

Equalizer control

HIGH

MID

LOW

Input frequency

10 kHz

5 kHz

250 Hz

100 Hz


48

AUX1, AUX2, AUX3 SEND (MG166C-USB, MG166C)AUX1, AUX2, EFFECT SEND (MG166CX-USB, MG166CX)

-75 dBu-100 dBu

MONITOR OUT(L, R)

-72 dBu-85 dBu

FADER/VR

Max.Min.

STEREO OUT(L, R)

-78 dBu-98 dBu

GROUP OUT(1-4)

-80 dBu-100 dBu

Notes: When measuring MONITOR OUT, set the ST FADER to minimum. Noise should be measured with a 12.7 kHz -6 dB/octave low pass filter.

2-12 Lighting Check of LEVEL metersCheck the 0 indicator of meter lights up when the output level at ST OUT (L, R) is +4 2 dBu.Move the ST master fader and check the indicators light up in order from -30 to PEAK.

2-13 DistortionIn the signal routes 3 to A specified in the table 2-6-1 to 2-6-6, set the GAIN controls to the position specified in the table(except PHONES), and apply the frequency 20 Hz, 1 kHz and 20 kHz. Then check the distortion is 0.1 % or less, when theoutput signal level obtained at the each output terminal is +14 dBu.Also check the distortion is 0.2 % or less, when the output signal level obtained at the MONITOR OUT (L/R) is +14 dBu.* In the signal route A, turn the PAN/BAL control to L or R fully and measure the distortion when the signal level obtained at

ST L or R OUT is +14 dBu.* In the signal route 9, measure the distortion of all output terminals in the table 2-6-1.* In the signal route 0, check the distortion is 0.1 % or less when the signal level obtained at INSERT OUT is +10 dBu.* Set the unmeasured output master level control and fader to minimum.

2-14 Maximum OutputWith controls set as specified in the section 2-2, check the distortion is 1 % or less when the output level is +24 dBu at ST OUT.Check the distortion is 1 % or less when the output level obtained at GROUP OUT, AUX1, AUX2, AUX3 SEND (MG166C-USB,MG166C), AUX1, AUX2, EFFECT SEND (MG166CX-USB, MG166CX) and MONITOR OUT is +20 dBu.Check the distortion is 1 % or less when the output level obtained at PHONES (L, R) is +7.5 dBu.Notes:

When measuring ST OUT and GROUP OUT, turn the PAN or PAN/BAL control to the left or the right fully. Only when measuring PHONES, turn the PFL switch of INPUT channel to ON.

2-15 Equivalent Input NoiseWith controls set as specified in the section 2-2, connect pin 2 (hot) and pin 3 (cold) of the CH INPUT MIC terminal with150 and check the noise level obtained at ST OUT L is -44 dBu or less.If the noise level exceeds -44 dBu, check the equivalent input noise level is -128 dBu or less.With controls set as specified in the section 2-2, connect pin 2 (hot) and pin 3 (cold) of the ST INPUT MIC terminal with 150 and check the noise level obtained at ST OUT L is -37 dBu or less.If the noise level exceeds -37 dBu, check the equivalent input noise level is -121 dBu or less.

Notes: Set the LEVEL controls of input channels except measured one to minimum. Noise should be measured with a 12.7 kHz -6 dB/octave low pass filter. The equivalent input noise level is obtained by subtracting the channel gain from the noise level.

2-16 Residual NoiseWith controls set as specified in the section 2-2, set the fader and LEVEL controls of all input channels to minimum and theassign switches of all input channels to OFF.Then check the noise level is less than the values in the table 2-16 when the fader and LEVEL controls of MASTER is set tomaximum or minimum.

Table 2-16


49

2-17-2 RATIOIncrease the input level by +10 dB and check the output level obtained at INSERT OUT 1-6 is within the range specified in thetable 2-17-2 compared with the output level specified in the table 2-17-1.

Table 2-17-2

Note: Distortion should be measured with a 30 kHz low pass filter.

2-17-5 Attack Time and Release TimeWith the condition specified in the section 2-17-2, check the attack time and the release time of the output obtained at INSERTOUT 1-6 is within the range specified in the table 2-17-5.

Table 2-17-5

Notes: Attack time: restoration time (at 90 %) after

changing the input level from -66 dBu to -56dBu. (Fig. 2-17-5)

Release time: restoration time (at 90 %) af-ter changing the input level from -56 dButo -66 dBu. (Fig. 2-17-5)

Fig. 2-17-5

2-17 COMP2-17-1 GAIN

With controls set as specified in the section 2-2, set the COMP control of channels 1-6 to maximum.Then check the output level obtained at INSERT OUT 1-6 is within the range specified in the table 2-17-1.

Table 2-17-1CH INPUT 1-6

MICINPUT LEVEL

-65 dBuCOMP control

Max.INSERT OUT 1-6

+3 2 dBu

CH INPUT 1-6MIC

INPUT LEVEL-55 dBu

INSERT OUT 1-6+3.5 1 dBu

2-17-3 Frequency CharacteristicWith the condition specified in the section 2-17-2, set the signal frequency to 20 Hz and 20 kHz and check the output levelobtained at INSERT OUT 1-6 is within the range of 3 dB compared with the 1 kHz (0 dB).

2-17-4 DistortionWith the condition specified in the section 2-17-2, set the signal frequency to 20 Hz, 1 kHz and 20 kHz and check the distortionis less than the value specified in the table 2-17-4.

Table 2-17-4Input Frequency

20 Hz1 kHz20 kHz

Distortion5.0 %1.0 %1.0 %

Attack TimeRelease Time

INSERT OUT15 ms - 35 ms

170 ms - 420 ms

ATTACK TIME

90% 100%

90% 100%

Restoration Time

Restoration Time

RELEASE TIME

Sine wave Sine waveRectangular wave


50

2-18 DIGITAL EFFECT (MG166CX-USB, MG166CX)Set the CH1 as follows and input -60 dBu signal to CH1 MIC.Set EFFECT RTN fader and EFFECT RTN AUX VR to maximum and check the output level is the value specified in the Table2-18.

CH1 setting conditionGAIN VR, AUX VR : MinimumFader, EFFECT VR : MaximumON switch : ONPFL switch : OFF

Table 2-18

Set the PROGRAM dial to 1.Short the input terminal using 150 ohms resistor, and set the CH EFFECT level control and CH fader to minimum, then checkthe noise level obtained at ST L OUT and ST R OUT is -50 dBu or less.Also input music source and check the DIGITAL EFFECT is effective by listening to it.

Note: Noise should be measured with a 12.7 kHz -6 dB/octave low pass filter.

2-19 USB (MG166CX-USB, MG166C-USB)2-19-1 Recording

With the condition specified in the table 2-19-1, record the output signal on the personal computer via USB.

Table 2-19-1

OUTPUT

ST L, RGROUP 1-4

AUXMONITOR LMONITOR R

EFFECT RTN PFL

OFF

ON

ST FADERAUX SEND VR

MONITOR/PHONES VR

Max.

PROGRAM selectSwitch

16

PARAMETER

Min.

OUTPUT level

-10 dBu and above

-7 dBu and above

-10 dBu and above

LR

MONITOR OUT L

+16 3 dBu-

MONITOR OUT R

-

+16 3 dBu

LR

INPUT CH1 PAN control

PHONE(INSERT) 1

INPUTLEVEL

-20 dBuL (turned counterclockwise fully)R (turned clockwise fully)

2-19-2 GAINPlayback the recorded file via USB, and then check the output level obtained at the MONITOR OUT L/R terminals is within therange specified in the table 2-19-2.

Table 2-19-2

* Set the 2TR IN level control to Maximum.* Set the STEREO level control to Minimum.* Set the sound control of the personal computer to Maximum.* Turn the TO STEREO/TO MONITOR switch to ON (TO MONITOR) position.


51

3. OthersExecute each test with controls set effective.

3-1 Effect (MG166CX-USB, MG166CX)Check the effect program [1], [6], [11] and [16] are effective respectively.Check the output signal can be controlled with the parameter volume in each effect program.Check the allophone can not be heard when the program is changed.

3-2 PHANTOMConnect a 10 k load resistance between pin 1 and pin 2 of the INPUT A or MIC terminal and short-circuit pin 2 and pin 3.Then turn on the PHANTOM switch and check the PHANTOM indicator lights up and the voltage between pin 1 and pin 2 isbetween +33 V and +37 V.

4. Settings for shipping4-1 Factory Settings

Equalizer gain control (HIGH, MID, LOW) : Center (0) PAN, PAN/BAL, BAL control : Center Other VR controls : Minimum Faders : Minimum Lock-push switches : OFF PROGRAM select switch : 1 (MG166CX-USB, MG166CX) ON/STANDBY switch (on rear side) : STANDBY


52

1. 1-1

5 40 30 %90 %

1-2 AC100V10 %ACPA-30WE524000

1-3 USB AUDIO

48 kHz44.1 kHz 16 bits

2. 2-1

PHONESL/R 403 WST OUT 600 10 k

2-2 CH INPUT1-8

GAIN -60/-34 dBu 80 OFFCOMPCH 1-6 EQHIGHMIDLOWGAIN CENTEREQ MID AUX1AUX2AUX3 MG166C-USBMG166CAUX1AUX2EFFECT MG166CX-USBMG166CXAUX2 PRE OFFPOSTPAN LON ONLEDOFFPFL ONOFF1-23-4 ONOFFST ONOFF

ST INPUT9/1011/12GAIN -60/-34 dBu 80 OFFEQHIGHMIDLOWGAIN CENTERAUX1AUX2AUX3 MG166C-USBMG166CAUX1AUX2EFFECT MG166CX-USBMG166CXAUX2 PRE OFFPOSTPAN/BAL LON ONLEDOFFPFL ONOFF1-23-4 ONOFFST ONOFF


53

ST INPUT13/1415/16EQHIGHLOWGAIN CENTERAUX1AUX2AUX3 MG166C-USBMG166CAUX1AUX2EFFECT MG166CX-USBMG166CXAUX2 PRE OFFPOSTBAL LON ONLEDOFFPFL ONOFF1-23-4 ONOFFST ONOFF

DIGITAL EFFECTMG166CX-USBMG166CXPROGRAM 1PARAMETER AUX1AUX2 ON ONLEDOFFPFL ONOFF1-23-4 ONOFFST ONOFFEFFECT RTN

MASTERGROUP1-23-4 STEREO GROUP1-23-4 TO ST ASSIGN OFFSTEREO STEREO AUX1AUX2AUX3 SEND MG166C-USBMG166CAUX1AUX2EFFECT SEND MG166CX-USBMG166CXRETURN TO AUX1AUX2 ST MONITOR/PHONES STEREO/GROUP STEREOOFF1-2/3-4 1-2 (OFF)2TR IN/USB TO STEREO/TO MONITOR OFFTO STEREO

OTHERSPHANTOM OFF

2-3 1 kHz

2-4 150

2-5 POWER

2-6 2-22-6-12-6-6


54

*1 PANBALLGROUPOUTPANBAL/PANBALLRGROUPOUTPAN R

*2 PFL ON*3 CH 1-23-4 ONST/GROUPGROUPCH1*4 CH ST OFFCH 1-23-4 ONGROUP (1-2/3-4) STONCH1*5 2 dB

2-6-3 STEREO IN

2-6-2 18

2-6-5 RETURN LR

2-6-6 2TR IN LR

2-6-4 STEREO IN

*6 2TR IN/USB *7 MONITOR OUTPHONES OUT2TR IN/USB ONTO MONITOR

0 MIC 1-8CH INSERT IN 1

CH INSERT IN 2-8

-80 dBu+0 dBu+0 dBu

-20 2 dBu-

-

1-8-

+2.2 2 dBu+2.2 2 dBu

L-

+2.2 2 dBu-

INSERT OUT REC OUT

R

2-6-1 18

5

6

L/MONOR +0 dBu

+16 2 dBu-

+16 2 dBu+16 2 dBu

+15 2 dBu+9 2 dBu

L R AUX1AUX2 SEND

ST OUT

ST OUT *6 MONITOR OUT *7 PHONES *7

7

8

LR -27.8 dBu

+0 2 dBu-

L-

+0 2 dBu

R

+6 2 dBu-

L-

+6 2 dBu

R-5.5 2 dBu

-

L-

-5.5 2 dBu

R

1

9

MIC

LINE

-80 dBu

-36 dBu-10 dBu

Max.

Min.Min.

+1.5 2 dBu *1+14 2 dBu *4

+4 2 dBu+4 2 dBu

+1.5 2 dBu *1+14 2 dBu *4

-

-

+4 2 dBu-

-

-

+6 2 dBu-

-

-

-4 2 dBu-

-

-

+6 2 dBu-

-

-

+20 2 dBu-

-

-

+0 2 dBu-

-

-

+20 2 dBu-

-

-

L R PRE OFF PRE ON-4 2 dBu

-

-

-

ST OUT GROUPOUT1-2/3-4

AUX2 SENDAUX3 SEND



MONITOROUT (L, R)

MONITOROUT (L, R)

*2

MONITOROUT (L, R)

*3

AUX1SEND

2

AMIC

LINE

9/10,11/12

9L/mono,11L/mono10R, 12R

-80 dBu-36 dBu

-54 dBu

+1.5 2 dBu *1+1.5 2 dBu *1

+4 2 dBu

-

+1.5 2 dBu *1-

-

+4 2 dBu

+9 2 dBu-

-

-

-1 2 dBu-

-

-

+9 2 dBu-

-

-

+0 2 dBu-

-

-

L R PRE OFF PRE ONMax.Min.

Max.

+4 2 dBu-

-

-

+4 2 dBu-

-

-

1/3 2/4

-1 2 dBu-

-

-



ST OUT MONITOROUT (L, R)*2

GROUP OUT AUX1SEND

AUX2 SEND

3

4

PHONEJACKPIN

JACK

13L, 15L14R, 16R13L, 14L15R, 16R

-30 dBu

+4 2 dBu-

+4 2 dBu-

-

+4 2 dBu-

+4 2 dBu

+3 2 dBu+3 2 dBu

-

-

-7 2 dBu-7 2 dBu

-

-

+3 2 dBu+3 2 dBu

-

-

+0 2 dBu (L)+0 2 dBu (R)

-

-

L R PRE OFF PRE ON+4 2 dBu

-

-

-

-

+4 2 dBu-

-

1/3 2/4

-7 2 dBu-7 2 dBu

-

-



MONITOROUT (L, R)

*2

AUX2 SENDAUX1SEND

ST OUT GROUP OUT


55

2-10 INPUTONSTONPANST CH INPUTPAN/BALBALST L OUT+20 dBuST R OUT-50 dBuPANPAN/BAL,BALST R OUT+20 dBuST L OUT-50 dBu

2-11 PEAK2-2CH INPUTST INPUTMICPEAK2-11

2-11

2-7 2-6-1620 Hz20 kHz1 kHz+1.0/-2.5 dB* 20 Hz+1.0 dB-4.5 dB* CH1OUTCH2ST L OUT* ST L OUTST R OUT

2-8 HPF2-6-12-6-3GAIN80 Hz-36 dBu 80 ONST L OUT 80 OFF-32 dB

2-9 EQ2-2EQHIGHMIDLOWGROUP1GROUP22-9-12-9-220 %2-9-12-9-2

2-9-1 18

EQ

10 kHz

2.5 kHz

100 Hz

+12 2 dB-12 2 dB+15 2 dB-15 2 dB+12 2 dB-12 2 dB

EQ

HIGH

MID

LOW

2-9-2 9/1015/16

EQ

-

-

+12 2 dB-12 2 dB

+15 2.5 dB-15 2.5 dB+15 2.5 dB-15 2.5 dB+12 2 dB-12 2 dB

EQ

HIGH

MID

LOW

10 kHz

5 kHz

250 Hz

100 Hz

MIC (CH1-8)ST CH MIC

(CH 9/10, CH11/12)

PEAK-43 3 dBu

-49 3 dBu


56

MONITOR OUTST FADER12.7 kHz-6 dB/octave

2-12 ST OUT+42 dBu0ST-30PEAK

2-13 2-6-1620 Hz, 1 kHz, 20 kHzPHONES +14 dBu0.1 %MONITOR OUTLR+14 dBu0.2 %* PAN/BALLRST LR OUT+14 dBu

* 2-6-1* INSERT OUT+10 dBu0.1 %* Master

2-14 2-2ST OUT +24 dBu1 %GROUP OUTAUX1AUX2AUX3 SEND (MG166C-USBMG166C)AUX1AUX2EFFECT SEND (MG166CX-USBMG166CX) MONITOR OUT+20 dBu1 %PHONESLR+7.5 dBu 1 %

ST OUTGROUP OUTPANPAN/BALLR PHONESPFLON

2-15 2-2CH INPUT MIC2 pin-Hot3 pin-Cold150ST L OUT-44 dBu-44 dBu-128 dBuST INPUT MIC2 pin-Hot3 pin-Cold150ST L OUT-37 dBu-37 dBu-121 dBu

12.7 kHz-6 dB/octave

2-16 2-2assignOFFMASTER2-16

2-16AUX1, AUX2, AUX3 SEND (MG166C-USB, MG166C)

AUX1, AUX2, EFFECT SEND (MG166CX-USB, MG166CX)-75 dBu-100 dBu

MONITOR OUT(L, R)

-72 dBu-85 dBu

/VR

STEREO OUT(L, R)

-78 dBu-98 dBu

GROUP OUT(1-4)

-80 dBu-100 dBu


57

2-17 COMP

2-17-1 2-21-6COMPINSERT OUT2-17-1

2-17-1

2-17-3 2-17-220 Hz20 kHzINSERT OUT1 kHz0 dB3 dB

2-17-4 2-17-220 Hz1 kHz20 kHz2-17-4

2-17-4

30 kHz

2-17-5 2-17-2INSERT OUT2-17-5

2-17-5

2-17-2 +10 dBINSERT OUT 1-62-17-12-17-2

2-17-2

CH INPUT 1-6MIC

-65 dBu

COMP

INSERT OUT 1-6+3 2 dBu

CH INPUT 1-6MIC

-55 dBu

INSERT OUT 1-6+3.5 1 dBu

20 Hz1 kHz

20 kHz

5.0 %1.0 %1.0 %

INSERT OUT1535 ms170420 ms

-66 dBu -56 dBu90 %2-17-5-56 dBu -66 dBu90 %2-17-5

2-17-5

90% 100%

90% 100%


58

2-18 MG166CX-USBMG166CXCH1CH1 MIC-60 dBuEFFECT RTNEFFECT RTN AUX MAX2-18

***CH1***GAIN VRAUX VR EFFECT VR ON switch ONPFL switch OFF

2-18

OUTPUT

ST L,RGROUP 1-4

AUXMONITOR LMONITOR R

EFFECT RTN PFL

OFF

ON

STAUX SEND

MONITOR/PHONES

PROGRAM select

16

PARAMETER

-10 dBu

-7 dBu

-10 dBu

PROGRAM1150CH EFFECTCHST L OUTST R OUT-50 dBuDIGITAL EFFECT

12.7 kHz-6 dB/octave

2-19 USBMG166CX-USBMG166C-USB

2-19-1 2-19-1USB

2-19-1

LR

CH1 PAN

PHONE(INSERT) 1

-20 dBuLR

LR

MONITOR OUT L

+16 3 dBu-

MONITOR OUT R

-

+16 3 dBu

2-19-2USB2-19-2

2-19-2

* 2TR IN* STEREO* * TO STEREO/TO MONITOR TO MONITOR


59

3.

3-1 MG166CX-USBMG166CX161116

3-2 INPUT AMIC1-210 k2-3 PHANTOMPHNATOM+33 V+37 V

4. 4-1

EQ HIGHTMIDLOW 0 PANBALPAN/BAL Lock-PUSH OFF PROGRAM 1MG166CX-USBMG166CX ON/STANDBY STANDBY

PARTS LISTMG166CX-USB/MG166CX OVERALL ASSEMBLYMG166CX-USB/MG166CX .................................................. 2

MG166CX-USB/MG166CX HEATSINK ASSEMBLYMG166CX-USB/MG166CX Assy............................. 5

MG166C-USB/MG166C OVERALL ASSEMBLYMG166C-USB/MG166C ...................................................... 6

MG166C-USB/MG166C HEATSINK ASSEMBLYMG166C-USB/MG166C Assy.................................. 9

ELECTRICAL PARTS ......................................................... 10

CONTENTS

Notes: DESTINATION ABBREVIATIONSA : Australian modelB : British modelC : Canadian modelD : German modelE : European modelF : French modelH : North European modelI : Indonesian modelJ : Japanese modelK : Korean model

M : South African modelO : Chinese modelQ : South-east Asia modelT : Taiwan modelU : U.S.A. modelV : General export model (110V)W: General export model (220V)N,X: General export modelY : Export model

WARNING Components having special characteristics are marked and must be replaced with parts havingspecification equal to those originally installed.

The numbers QTY show quantities for each unit. The parts with -- in PART NO. are not available as spare parts. This mark } in the REMARKS column means these parts are interchangeable. The second letter of the shaded ( ) part number is O, not zero. The second letter of the shaded ( ) part number is I, not one. QTY PART NO.-- REMARKS PART NO. 2 PART NO. 2



2

MG166CX-USB/MG166CX OVERALL ASSEMBLYMG166CX-USB/MG166CX

MG166CX-USB/MG166CX

510490

480

440

450

460

440

470

520

Accessories of Phone Jack()


MG166CX-USB

Heatsink Assembly (See Page 5)Ass'y5

530

520

540

520

440

520

1010c

10a10b

20b20a

20b

10b

30

50

70

90100

110

40

190

200

220

250

260

270

290

300

340

350

350

350

360

370

380

390

400

400

400420

400

410

410

420

430

560

550

200

20

60

90a

90b

310

330

320

440

500

Priority Screw

Priority Screw

Priority Screw

Priority Screw

80180


3

RANKQTYREMARKSDESCRIPTION REF NO. PART NO.

: New Parts RANK: Japan only

MG166CX-USB/MG166CX

OVERALL ASSEMBLY MG166CX,MG166CX-USBOverall Assembly MG166CX (WJ54960)Overall Assembly MG166CX-USB (WJ54950)

* 10 Bottom Case Assembly MG166CX* 10 Bottom Case Assembly MG166CX-USB

10a Bottom Case MG166CX (WJ44930)10a Bottom Case MG166CX-USB (WJ44920)10b Foot 410c Shield Sheet (WJ28190)

* 20 Inner Chassis Assembly20a Inner Chassis20b Bind Head Tapping Screw-S 3x6 MFZN2W330 Heatsink Assembly (WJ65430)40 Connector Assembly PS7P PH&PH 7P 110L (WJ98020)50 Connector Assembly PS3P PH&PH 3P 140L (WJ98040)60 Connector Assembly PS5P PH&PH 5P160L (WJ98030)70 Bind Head Tapping Screw-B 3x8 MFZN2B3 0180 Bind Head Tapping Screw-B 3x8 MFZN2W3 4 0190 USB Assembly MG166CX-USB (WG64450) 11

* 90a Circuit Board USB MG166CX-USB90b Shield USB MG166CX-USB100 Connector Assembly USB16 9P470L C&C SHIELD MG166CX-USB (WJ78440)110 Bind Head Tapping Screw-B 3x8 MFZN2B3 MG166CX-USB 2 01180 Cord Holder T18R TYTIN CO. MG166CX180 Cord Holder T18R TYTIN CO. MG166CX-USB 5190 Bind Head Tapping Screw-B 3x8 MFZN2B3 3 01200 Bind Head Tapping Screw-B 3x8 MFZN2W3 3 01220 PW Head Tapping Screw-B 3x8 MFZN2W3 3 01

* 250 Circuit Board JACK16X260 Hexagonal Spacer H25 3270 Bind Head Tapping Screw-S 3x6 MFZN2W3 3 01290 Knob Black 10 01300 Bind Head Tapping Screw-B 3x8 MFZN2W3 3 01310 Circuit Board DSP320 Shield DSP (WH10070)330 Bind Head Tapping Screw-B 3x8 MFZN2W3 2 01

* 340 Circuit Board MIX16CX350 Bind Head Tapping Screw-B 3x8 MFZN2W3 14 01360 Hexagonal Spacer370 Button MILKY/D-GRAY PHANTOM 01380 Button ON Assembly ON 13

* 390 Top Cover MG166CX* 390 Top Cover MG166CX-USB

400 Bind Head Tapping Screw-B 3x8 MFZN2B3 15 01410 Bind Head Tapping Screw-B 3x8 MFZN2B3 16 01420 Bind Head Screw 3x6 MFZN2B3 4 01430 Bind Head Tapping Screw-B 3x8 MFZN2B3 6 01440 Knob VR WHITE/M-GRAY GAIN,EFFECT,

MONITOR/PHONES 26MONITOR MIX

450 Knob VR GREEN/M-GRAY HIGH,MID F,MID,LOW 44460 Knob VR BLUE/M-GRAY AUX1 PRE,AUX2 30470 Knob VR RED/M-GRAY PAN,STEREO 13480 Knob VR YELLOW/M-GRAY COMP 6490 Fader Knob Black/L-Gray 1-8,9/10-15/16 12 01500 Fader Knob Red/D-Gray EFFECT RTN,GROUP1-2 3 01

GROUP3-4510 Fader Knob White/Red STEREO OUT 01520 Button HPF D-GRAY/WHITE 80,PRE,PFL,1-2,3-4 64 01

STEREO/GROUP,1-2/3-4STEREO/MONITOR

530 Button HPF Red ST 15540 Knob Black PROGRAM 03

* 550 Window Level560 Label, Name Plate MG166CX (WJ40290)560 Label, Name Plate MG166CX-USB (WJ40260)

ACCESSORIES MG166CX,MG166CX-USBs AC Adaptor PA-30 J J 10s AC Adaptor PA-30 U U 10

--

--

WJ449700WJ449800

--

--

WH091200--

WJ653900WJ288900WE877900

--

--

--

--

WE774400WE774300

--

WG336000WG208100

--

WE774400V3272800V3272800WE774400WE774300WF002600WJ263700WF757600WE877900WD942200WE774300WH108400

--

WE774300WJ263400WE774300WH362300WF776700WH455200WJ287400WJ288300WE774400WE774400WE878300WE774400WH466900

WH493600WH493700WH493800WH493900V9664900V9665000

V9665100WF776200

WJ614100WD233000WJ477400

--

--

WE524000WE524200


4

MG166CX-USB/MG166CX



s AC Adaptor PA-30 H H 10s AC Adaptor PA-30 K K,T 10s AC Adaptor PA-30 A A 10s AC Adaptor PA-30 B B 11s AC Adaptor PA-30 CHN O 10

USB Cable 4P 1.5m USB(A-B) MG166CX-USB 03DVD-ROM MG166CX-USB

WE523900WE524100WE523600WE523700WE523800V8100400X8515A00

(1) AC (3) AC

(2) GND

AC Adaptor (J) OUTPUT: AC35VCT 0.94A


5



MG166CX-USB/MG166CX

Heatsink Assembly MG166CX,MG166CX-USB(WJ65430)

* 10 Circuit Board PS16X20 Heatsink PS B (WJ65410)30 Silicone Grease X-113A G746 (VA79810)40 Bind Head Tapping Screw-B 3x8 MFZN2W3 3 0150 Bind Head Tapping Screw-B 3x8 MFZN2W3 6 01

--

WJ264200--

--

WE774300WE774300

Bottom view

10

10

20

30

30

40

40

50

50

MG166CX-USB/MG166CX HEATSINK ASSEMBLYMG166CX-USB/MG166CX Assy


6

MG166C-USB/MG166C OVERALL ASSEMBLYMG166C-USB/MG166C

MG166C-USB/MG166C

510490

480

440

450

460

470

520



MG166C-USB

Heatsink Assembly (See Page 9)Ass'y9

530

520

520

440520

1010c

10a10b

20b20a

20b

10b

30

50

70

80

90100

110

40

180

190

200

220

250

260

270

290

300

340

350

350

350

370

380

390

400

400

400

400

410

410

420

430

560

200

20

90a

90b

440

500

Priority Screw

Priority Screw

Priority Screw

Priority Screw

550


7



MG166C-USB/MG166C

OVERALL ASSEMBLY MG166C,MG166C-USBOverall Assembly MG166C (WJ54980)Overall Assembly MG166C-USB (WJ54970)

* 10 Bottom Case Assembly MG166C* 10 Bottom Case Assembly MG166C-USB

10a Bottom Case MG166C (WJ44930)10a Bottom Case MG166C-USB (WJ44920)10b Foot 410c Shield Sheet (WJ28190)

* 20 Inner Chassis Assembly20a Inner Chassis20b Bind Head Tapping Screw-S 3x6 MFZN2W330 Heatsink Assembly (WJ65420)40 Connector Assembly PS7P PH&PH 7P 110L (WJ98020)50 Connector Assembly PS3P PH&PH 3P 140L (WJ98040)70 Bind Head Tapping Screw-B 3x8 MFZN2B3 0180 Bind Head Tapping Screw-B 3x8 MFZN2W3 4 0190 USB Assembly MG166C-USB (WG64450) 11

* 90a Circuit Board USB MG166C-USB* 90b Shield USB MG166C-USB

100 Connector Assembly USB16 9P470L C&C SHIELD MG166C-USB (WJ78440)110 Bind Head Tapping Screw-B 3x8 MFZN2B3 MG166C-USB 2 01180 Cord Holder T18R TYTIN CO. MG166C180 Cord Holder T18R TYTIN CO. MG166C-USB 5190 Bind Head Tapping Screw-B 3x8 MFZN2B3 3 01200 Bind Head Tapping Screw-B 3x8 MFZN2W3 3 01220 PW Head Tapping Screw-B 3x8 MFZN2W3 3 01

* 250 Circuit Board JACK16260 Hexagonal Spacer H25 3270 Bind Head Tapping Screw-S 3x6 MFZN2W3 3 01290 Knob Black 10 01300 Bind Head Tapping Screw-B 3x8 MFZN2W3 3 01

* 340 Circuit Board MIX16350 Bind Head Tapping Screw-B 3x8 MFZN2W3 14 01370 Button MILKY/D-GRAY PHANTOM 01380 Button ON Assembly ON 12

* 390 Top Cover MG166C* 390 Top Cover MG166C-USB

400 Bind Head Tapping Screw-B 3x8 MFZN2B3 15 01410 Bind Head Tapping Screw-B 3x8 MFZN2B3 16 01420 Bind Head Screw 3x6 MFZN2B3 3 01430 Bind Head Tapping Screw-B 3x8 MFZN2B3 6 01440 Knob VR WHITE/M-GRAY GAIN,EFFECT,

MONITOR/PHONES 12MONITOR MIX

450 Knob VR GREEN/M-GRAY HIGH,MID F,MID,LOW 44460 Knob VR BLUE/M-GRAY AUX1 PRE,AUX2 41470 Knob VR RED/M-GRAY PAN,STEREO 13480 Knob VR YELLOW/M-GRAY COMP 6490 Fader Knob Black/L-Gray 1-8,9/10-15/16 12 01500 Fader Knob Red/D-Gray EFFECT RTN,GROUP1-2 2 01

GROUP3-4510 Fader Knob White/Red STEREO OUT 01520 Button HPF D-GRAY/WHITE 80,PRE,PFL,1-2,3-4 61 01

STEREO/GROUP,1-2/3-4STEREO/MONITOR

530 Button HPF Red ST 14* 550 Window Level

560 Label, Name Plate MG166C (WJ40300)560 Label, Name Plate MG166C-USB (WJ40270)

ACCESSORIES MG166C,MG166C-USBs AC Adaptor PA-30 J J 10s AC Adaptor PA-30 U U 10s AC Adaptor PA-30 H H 10s AC Adaptor PA-30 KT K,T 10s AC Adaptor PA-30 A A 10s AC Adaptor PA-30 B B 11s AC Adaptor PA-30 CHN O 10

--

--

WJ449700WJ449800

--

--

WH091200--

WJ653900WJ288900WE877900

--

--

--

WE774400WE774300

--

WG336000WG208100

--

WE774400V3272800V3272800WE774400WE774300WF002600WJ263600WF757600WE877900WD942200WE774300WJ263300WE774300WF776700WH455200WJ287700WJ288600WE774400WE774400WE878300WE774400WH466900

WH493600WH493700WH493800WH493900V9664900V9665000

V9665100WF776200

WJ614100WJ477400

--

--

WE524000WE524200WE523900WE524100WE523600WE523700WE523800


8



MG166C-USB/MG166C

DVD-ROM 8E94 MG166C-USBUSB Cable 4P 1.5m USB(A-B) MG166C-USB 03

X8515A00V8100400

(1) AC (3) AC

(2) GND

AC Adaptor (J) OUTPUT: AC35VCT 0.94A


9

MG166C-USB/MG166C



Heatsink Assembly MG166C,MG166C-USB(WJ65420)

* 10 Circuit Board PS1620 Heatsink PS B (WJ65410)30 Silicone Grease X-113A G746 (VA79810)40 Bind Head Tapping Screw-B 3x8 MFZN2W3 3 0150 Bind Head Tapping Screw-B 3x8 MFZN2W3 5 01

--

WJ264100--

--

WE774300WE774300

MG166C-USB/MG166C HEATSINK ASSEMBLYMG166C-USB/MG166C Assy

Bottom view

10

10

20

30

30

40

40

50

50


10

ELECTRICAL PARTS RANKQTYREMARKSDESCRIPTION REF NO. PART NO.


MG166CX-USB/MG166CX

ELECTRICAL PARTS MG166CX,MG166CX-USBMG166C,MG166C-USB

Circuit Board DSP MG166CX,MG166CX-USB(WH10870)(X7687D0)

* Circuit Board JACK16X MG166CX,MG166CX-USB(X8282C0)

* Circuit Board JACK16 MG166C,MG166C-USB(X8282C0)

* Circuit Board MIX16CX MG166CX,MG166CX-USB(X8281C0)

* Circuit Board MIX16 MG166C,MG166C-USB(X8281C0)

* Circuit Board PS16X MG166CX,MG166CX-USB(X8285C0)

* Circuit Board PS16 MG166C,MG166C-USB(X8285C0)

* Circuit Board USB MG166CX-USB,MG166C-USB(WG33610)(X7196C0)

Circuit Board DSP MG166CX,MG166CX-USB(WH10870)(X7687D0)

CM01 Ceramic Capacitor-B (chip) 0.01uF 50V K 01CM04 Ceramic Capacitor-B (chip) 0.01uF 50V K 01

-07 Ceramic Capacitor-B (chip) 0.01uF 50V K 01CM08 Electrolytic Cap. (chip) 10uF 16V 01CM09 Electrolytic Cap. (chip) 100uF 10V 01CM11 Ceramic Capacitor-B (chip) 0.1uF 16V K 01

-13 Ceramic Capacitor-B (chip) 0.1uF 16V K 01CM14 Electrolytic Cap. (chip) 2.2uF 50V 01CM15 Electrolytic Cap. (chip) 10uF 16V 01CM16 Electrolytic Cap. (chip) 10uF 16V 01CM17 Ceramic Capacitor-B (chip) 0.1uF 16V K 01

-20 Ceramic Capacitor-B (chip) 0.1uF 16V K 01CM21 Ceramic Capacitor-SL(chip) 100pF 50V J 01CM24 Electrolytic Cap. (chip) 100uF 10V 01CM25 Electrolytic Cap. (chip) 100uF 10V 01CM26 Ceramic Capacitor-B (chip) 4700pF 50V K 01CM27 Ceramic Capacitor-SL(chip) 220pF 50V J 01CM28 Electrolytic Cap. (chip) 100uF 10V 01CM29 Ceramic Capacitor-B (chip) 0.1uF 16V K 01CM31 Ceramic Capacitor-B (chip) 0.1uF 16V K 01CM32 Ceramic Capacitor-B (chip) 0.1uF 16V K 01CM34 Electrolytic Cap. (chip) 10uF 16V 01CM35 Ceramic Capacitor-B (chip) 0.1uF 16V K 01CM36 Ceramic Capacitor-B (chip) 0.1uF 16V K 01CM37 Electrolytic Cap. (chip) 10uF 16V 01CM38 Ceramic Capacitor-B (chip) 0.1uF 16V K 01CM40 Ceramic Capacitor-B (chip) 0.1uF 16V K 01

-42 Ceramic Capacitor-B (chip) 0.1uF 16V K 01CM43 Electrolytic Cap. (chip) 10uF 16V 01CM45 Electrolytic Cap. (chip) 10uF 16V 01CM47 Electrolytic Cap. (chip) 10uF 16V 01CM48 Electrolytic Cap. (chip) 10uF 16V 01CM50 Ceramic Capacitor-B (chip) 1500pF 50V K 01CM51 Ceramic Capacitor-B (chip) 1500pF 50V K 01CM53 Ceramic Capacitor-B (chip) 0.01uF 50V K 01CM54 Ceramic Capacitor-B (chip) 0.1uF 16V K 01CM55 Ceramic Capacitor-B (chip) 0.1uF 16V K 01CM56 Ceramic Capacitor-SL(chip) 120pF 50V J 01CM57 Ceramic Capacitor-SL(chip) 120pF 50V J 01CM58 Ceramic Capacitor-B (chip) 0.1uF 16V K 01CM60 Ceramic Capacitor-B (chip) 0.01uF 50V K 01CM62 Electrolytic Cap. (chip) 47uF 16V 01CM63 Electrolytic Cap. (chip) 47uF 16V 01CM70 Ceramic Capacitor-B (chip) 0.1uF 16V K 01CM73 Ceramic Capacitor-B (chip) 0.1uF 16V K 01CM74 Ceramic Capacitor-B (chip) 0.01uF 50V K 01CM75 Ceramic Capacitor-SL(chip) 100pF 50V J 01CM76 Ceramic Capacitor-SL(chip) 470pF 50V J 01

WH108400

WJ263700

WJ263600

WJ263400

WJ263300

WJ264200

WJ264100

WG336000

WH108400

US064100US064100US064100UF037100UF028100US035100US035100UF066220UF037100UF037100US035100US035100US062100UF028100UF028100US063470US062220UF028100US035100US035100US035100UF037100US035100US035100UF037100US035100US035100US035100UF037100UF037100UF037100UF037100US063150US063150US064100US035100US035100US062120US062120US035100US064100UF037470UF037470US035100US035100US064100US062100US062470


11



MG166CX-USB/MG166CX

CM79 Ceramic Capacitor-B (chip) 0.01uF 50V K 01-81 Ceramic Capacitor-B (chip) 0.01uF 50V K 01

CM82 Ceramic Capacitor-B (chip) 0.1uF 16V K 01CM83 Ceramic Capacitor-B (chip) 0.1uF 16V K 01CM85 Ceramic Capacitor-B (chip) 0.1uF 16V K 01CM91 Ceramic Capacitor-B (chip) 0.01uF 50V K 01CM92 Ceramic Capacitor-B (chip) 0.01uF 50V K 01

CNM02 Pin Header PHA202-1002-A04EMM01 Coil (chip) 31PT222Z1E9L TP 01ICM03 IC PST596DNR SYSTEM RESET 02ICM04 IC AK5381VT-E2 ADC 05ICM06 IC TAR5S33(TE85L,F) REGULATOR +3.3V 01ICM07 IC YMW767-VTZ CPU 10ICM08 IC PCM1742KEG/2K DAC 05ICM09 IC NJM4565M(TE1) OP AMP 01ICM10 IC MX23L8103TC-90G CPU 06ICM11 IC NJM4565M(TE1) OP AMP 01ICM12 IC TAR5S25U(TE85L,F) REGULATOR +2.5VJMM02 Carbon Resistor (chip) 0 1/16W J 01JMM03 Carbon Resistor (chip) 0 1/16W J 01JMM04 Carbon Resistor (chip) 0 1/16W J 01LM03 Chip Inductance 600 BK1608HM601 01LM04 Chip Inductance 600 BK1608HM601 01QM01 Digital Transistor DTC114EKA 01QM02 Digital Transistor DTA114EKA 01QM04 Transistor 2SC3326 A,B TE85R 01QM05 Transistor 2SC3326 A,B TE85R 01RM01 Carbon Resistor (chip) 10K 1/16W J 01RM03 Carbon Resistor (chip) 1.0K 1/16W J 01RM04 Carbon Resistor (chip) 100 1/16W J 01RM05 Carbon Resistor (chip) 1.0K 1/16W J 01

-08 Carbon Resistor (chip) 1.0K 1/16W J 01RM13 Carbon Resistor (chip) 10K 1/16W J 01RM14 Carbon Resistor (chip) 100 1/16W J 01RM17

Documents

Yamaha Mg166 service manual