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EPSON Stylus COLOR 800 Service Manual 6 -i

Chapter 6Maintenance

6.1. General Description...........................................................................................................6-16.2. Maintenance .....................................................................................................................6-1

6.2.1. Cleaning .............. .............. .............. .............. ............... .............. .............. ........ 6-16.2.2. Lubrication........................................................................................................6-2

6.2.2.1. Recommended Lubricants................................................................6-26.2.2.2. Lubrication Points and Amounts ........................... ........................... .6-3

6.2.3. Ink Drain Pad Replacement...............................................................................6-86.2.4. Head Cleaning.............. .............. .............. .............. .............. .............. .............. 6-8

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EPSON Stylus COLOR 800 Service Manual 6-1

6.1 General Description

To keep the printer in optimum condition, it is essential to perform several types of maintenance on a regularbasis, including cleaning of the exterior, lubrication, ink drain pad replacement, and printhead cleaning.Cleaning of the exterior consists of wiping off dirt and dust on the outer cases using denatured alcohol, aswell as vacuuming debris and dust accumulated in the printer. It is important to check that printer gears areadequately lubricated. In addition to maintenance mentioned above, this printer needs an occasional ink padreplacement and printhead cleaning when necessary. This chapter gives information on when and how tomaintain the printer.

Be sure to unplug the AC power cable before disassembling and assembling the printer.

Be careful not to get ink in your eyes. If ink does get in your eyes, wash it away with fresh water andsee a doctor.

Follow the instructions below when handling the lithium battery installed on the C202 MAIN board.Keep the battery away from any metal materials.Be sure to mount the battery in the right direction.Do not heat up or burn the battery.

Once the ink cartridge is removed from the ink cartridge holder for servicing, replace it with a newone before returning to the customer.

6.2 Maintenance

6.2.1 Cleaning

To keep this printer working at its best, it is indispensable to keep it clean by removing dust and dirt not onlyon the outer case but also inside the printer. Accumulated dust and debris may cause a printer malfunction.Therefore be sure to clean the printer interior whenever you get a chance. Read the CAUTION below beforeperforming any cleaning.

Never apply thinner, trichloroethylene, or toner-based solvents to any plastic parts. Thesesubstances may cause plastic or rubber parts to deform or degenerate.

Do not clean cases with a hard brush that may cause damage.Be careful not to damage any interior parts when cleaning inside the printer.

If you need to remove ink remaining on the PF roller, moisten a soft cloth with alcohol. Take care withthe PF roller, since it is coated with a powdery material, which could peel from impact.

WARNING

CAUTION

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6-2 EPSON Stylus COLOR 800 Service Manual

6.2.2 Lubrication

Lubricants need to be applied to specified points on the printer. Specified lubrication points and EPSON-recommended lubricants are listed in Table 6-1. The recommended lubricants, G-26 and O-8, have beentested and found most applicable to this printer mechanism. Also, you need to apply the appropriate amountof lubricant, since excessive application may damage nearby parts. (See Table 6-2.)

Never apply too much oil to the carriage guide shaft. Excess lubrication can damage the printhead.

Make sure the surface to be lubricated is not soiled before lubricating.

When applying O-8, use the provided container and be sure not to leave any oil after use.

6.2.2.1 Recommended Lubricants

Table 6-1 lists the recommended lubricants. You can order the listed grease and oil through the service partsdepartment.

Type Product name Amount Part Code Availability

Grease G-26 40 mg B702600001 EPSON-exclusive product

Oil O-8 40 mg 1019753 EPSON-exclusive product

CAUTION

Table 6-1. Recommended Lubricants

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EPSON Stylus COLOR 800 Service Manual 6 -3

6.2.2.2 Lubrication Points and AmountsTable 6-2 shows lubrication points along with the appropriate quantity. The listed lubrication points areprecisely illustrated on pages 6-4 through 6-7.

Ref. No. Lubrication Points Quantity Lubricant

1 Points where front paper guide and papereject roller shaft engage.

1 mm 1 G-26

2 Illustrated point in the cam 1 mm 2 mm G-263 Both edges of the pump reduction shaft and

pump drive shaft1 mm 2 mm (for each) G-26

4 Cutouts in the upper frame, where the platengap lever switches

1 mm 3 mm G-26

5 Illustrated side of the oil pad 0.6 cc O-8

6 Illustrated points where hopper assembly andright/left hopper release levers contact.

1 mm 2 mm G-26

7 Illustrated range on front side of upper frame. 1 mm 2 cm G-268 Illustrated range on rear side of upper frame. 1 mm 6 cm G-269 Illustrated range on the carriage guide shaft. Wipe specified part once each

way with a cloth moistened withO-8. Then wipe again with a drycloth to remove surplus oil.

O-8

10 Contact point of upper frame and bushing onthe right end of the PF roller shaft.

1 mm 2 mmWipe if extruded.

G-26

Table 6-2. Lubrication Points and Application

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Lubricate

Never lubricate the roller and the paper path.

Figure 6-1. Lubrication Point (1)

Lubricate


Lubricate


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Lubricate

Left Inner Side of the Upper Frame


Oil Pad

Carriage Viewed from the Bottom

Lubricate (8)


HopperAssembly

Hopper ReleaseLever


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Right Edge of the Upper FrameViewed from the Back

Lubricate0.6 cm

4 cm

6 cm


Lubricate

Right Edge of the

Upper Frame

1.15 cm

2 cm

3.5 cm


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Sliding Part


Lubricate

PF Roller

Bushing 12


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6.2.3 Ink Drain Pad Replacement

This printer has ink drain pads at the bottom of the printer mechanism. The need to replace them ismeasured by the amount of ink used, which is determined based on the number of head drive pulsesaccumulated in the counter. When the counted number exceeds a specified amount, a maintenance erroroccurs and is indicated by the LEDs on the control panel. (All LEDs on the panel blink to indicate this

condition.) Occurrence of this error means the end of pads capacity and requires immediate padreplacement. The replacement procedures are as follows:

1. Remove the ink drain pads; then replace them with new ones, which are listed as EPSON-exclusiveservice parts. (See the section entitled Ink Drain Pad Removalin Chapter 3.)

2. After replacement, reset Protection Counter A in the EEPROM. The printer will not recover from theerror condition until you perform this function. Press the Load/Eject, Cleaning (Black), and Cleaning

(Color) buttons while turning on the printer. Then press and hold down Cleaning (Color) for 3 secondsto reset EEPROM.

Be sure to replace the ink drain pad whenever the EEPROM is reset. If you continue to operate theprinter without a replacing the pad, the waste ink can overflow and damage printer parts.

Whenever you replace the EEPROM, replace the waste ink drain pads also.

6.2.4 Head Cleaning

This printer has 2 built-in cleaning modes: automatic and manual (forcible). Normally, the printer is inautomatic cleaning mode, in which it runs through a series of cleaning cycles that flush different amounts ofink through the printhead to keep it clean. However, this mode is not effective to correct print quality

problems. In these cases, you must perform manual cleaning using the control panel. There are 2 separatecleaning buttons: Cleaning (Black) and Cleaning (Color). These buttons are effective when printer power ison and when neither the Ink Low nor the Ink End condition is detected.

Whenever you encounter a problem that requires cleaning, use the procedure below:

1. Turn printer power on. When the power-on sequence is completed, verify that the printer is not in InkLow or Ink End status.

2. Connect the printer to a computer and send five full pages of data (60 lines each) to the printer.

3. Press the Cleaning (Black) or Cleaning (Color) button, depending on which printhead has the problem.

4. The LED next to the power button blinks during the cleaning cycle.

5. When the cycle is complete, the LED next to the power button stops blinking and the carriage returns to

the home position.

CAUTION

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To perform a full cleaning cycle using the maximum amount of ink, you must first send at least fivepages of data to the printer before pressing the cleaning button.

You can perform manual cleaning using the printer driver utility as well as the control panel.

Do not perform a manual cleaning unless there is an obvious printing problem. Excessive cleaningshortens ink life considerably.

CAUTION

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