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Chapter 6
Maintenance
6.1 OVERVIEW ............................................................................................................6-1
6.1.1 Cleaning................................................................................................................................... 6-1
6.1.2 Service Maintenance .............................................................................................................. 6-1
6.1.3 Lubrication .............................................................................................................................. 6-2
Chapter 6 Maintenance
6.1 OVERVIEW
This section describes the points and the procedures for maintaining the printer in its optimum condition.
6.1.1 Cleaning
This printer has no mechanical components requiring regular cleaning. Therefore, the points described
below are suggested to be checked for any dirt and make an appropriate cleaning if necessary.
CAUTION
Never use the chemical solvents, such as thinner, to clean the printer. These chemicals can
damage the components of the printer.
Be careful not to damage the components when you attempt to clean the inside of the printer.
Do not scratch surface of "ROLLER, ASSEMBLY, PF".
(Use soft brush to wipe off any dusts, or use soft cloth moistened with alcohol)
Housing: Use clean soft cloth moistened with water and wipe off any dirt. If the housing
stained with an ink, use a cloth moistened with a neutral detergent to wipe it off.
Inside the printer: Use a vacuum cleaner to remove any paper dust.
6.1.2 Service Maintenance
If the print irregularity (missing dot, white line, etc.) has occur or the printer indicates "MAINTENANCE
ERROR", perform the following operation to clear the error.
Head Cleaning
The printer has a built-in head cleaning function and is executable from the control panel.
1. Confirm that the printer is in stand-by state (the POWER indicator is not blinking), and hold
down the cleaning button on the control panel for more than 3sec.
2. The printer perform the built-in cleaning sequence. (during cleaning operation, the POWER
indicator is blinking)
Maintenance Error Clear
Since the printer consumes the ink, not only for printing but also for another operation like cleaning,
certain amount of ink are wasted. Therefore, the printer counts the amount of waste ink and they are
collected at the waste ink pad, and once the amount of waste ink reaches the predefined limit, the printer
indicates "MAINTENANCE ERROR" and the waste ink pad should be replaced as follows:
1. Replace the waste ink pad to new one.
2. After re-assemble the printer, turn the printer on while hold down the following buttons on
the control panel:
"LOAD/EJECT" button
"CLEANING" button
3. Press "LOAD/EJECT" button again while "PAPER END" indicator is blinking. This clears the
maintenance error condition and the waste ink counter value stored in EEPROM of the main
board.
Rev. A 6-1
EPSON Stylus Color 400 Service Manual
6.1.3 Lubrication
The type and amount of oil and grease used on this printer are determined based on the results of internal
evaluations. Therefore, specified type and amount of oil and grease must be applied at specified part of
the printer mechanism when servicing the printer.
CAUTION
Never use the oil and the grease other than those specified in this manual and using different type
of lubricant can damage the printer and the components.
Never apply oil or grease exceeding the amount specified in this manual.
Table 6-1. Specified Lubricants
Type Name EPSON Code Supplier
Grease G-26 B702600001 EPSON
Oil O-8 1019753 EPSON
Table 6-2. Lubrication Points
No. Standard Remarks
1 Apply grease while rotating "GEAR, 67.2".
Contact between "ROLLER, PF" and Do not put grease around the paper path.
"PAPER GUIDE, REAR" Use a syringe to apply it.
G-26
A half turn of "ROLLER, PF"
2 Apply to the contact of a hook of "PAPER
"Contact between "PAPER GUIDE, GUIDE, FRONT" and each roller.
FRONT" and each rollers: Do not put grease around the paper path.
1) "ROLLER, PF" (1 point) Use a syringe to apply it.
2) "ROLLER, EXIT" (2 points)
G-26
1) 10mm long
2) 2mm long
3 Verify that the carriage moves smoothly
Contact between the carriage assembly after lubricating it.
and "FRAME, UPPER" Use a syringe to apply it.
G-26
From the HP sensor installation point to
the point where "GUIDE PLATE, CABLE"
is attached.
4 Rotating the gears after applying grease to
Gears: evenly distribute it.
1) "GEAR, 67.2" Use a syringe to apply it.
2) "COMBINATION GEAR, 8, 14.4"
3) "GEAR, 23.2"
G-26
1) 1/4 of gear tooth
2) 1/3 of gear tooth
3) 1/3 of gear tooth
4) 1/3 of gear tooth
6-2 Rev. A
Chapter 6 Maintenance
Table 6-3. Lubrication Points (Continued)
No. Standard Remarks
5 Use a syringe to apply it.
The shaft for "GEAR, 16, 40.8" at
"FRAME, LEFT"
G-26
Approx. 5mm long
6 When applying to the right bush, apply it
Bush for "ROLER, PF" from the side of the paper path and wipe
1) Left: Inside the bush off any grease stick out to the cap
2) Right: Inside the bush (near the assembly side.
pump assembly) Rotate "ROLLER, PF" after applying the
grease to evenly distribute it in the bush.
Use a syringe to apply it.
G-26
Approx. 3mm diametrically
7 Do not put grease around the paper path.
Both Left/Right Bush for "ROLLER, EXIT" Use a syringe to apply it.
G-26
Evenly apply inside the bush
8 Verify that the holder slides only with a
Contact between "HOLDER, PULLEY, spring force after applying the grease.
DRIVEN" and "FRAME, UPPER" Use a syringe to apply it.
G-26
2mm long at each specified point
9 Do not put grease to "ROLLER,
ASF; ASSEMBLY, LD".
A round hole of the right frame of ASF (to
hold the roller shaft)
G-26
Evenly apply inside the hole
10 Completely wipe off any grease stack out
ASF; to inner side of ASF.
Contact between "HOPPER" and "LEVER,
HOPPER, RELEASE"
G-26
Evenly apply to the contact
Rev. A 6-3
EPSON Stylus Color 400 Service Manual
Table 6-4. Lubrication Points (Continued)
No. Standard Remarks
11 Completely wipe off any grease stack out
A round hole of the left frame of ASF to inner side of ASF.
("GEAR, 34" is inserting to this hole)
G-26
Evenly apply inside the hole
12 This application must be made only when;
Oil pad of carriage assembly *Replacing the carriage assembly
*Replacing oil pad
Use a precise syringe to apply it. If
accidentally apply too much oil to oil pad,
thrown it away and take a new oil pad
again.
Leave oil pad for a while to wait until oil is
evenly infiltrate and install it on the
carriage assembly.
O-8
0.6cc
Note that This is an amount to be applied
new oil pad when replacing it.
WARNING
Never apply oil to the CR guide shaft directly or additionally apply to oil pad. This may
cause fatal damage to the components of the printer.
*Never apply the oil exceeding 0.6cc.
No.12
(Oil pad)
Carriage Assembly
(bottom view)
"SHAFT, CR, GUIDE"
6-4 Rev. A
Chapter 6 Maintenance
No.2
10mm
2mm
No.1
2mm
No.3 "GEAR, 34"
No.11
Rev. A 6-5
EPSON Stylus Color 400 Service Manual
No.5
No.4
"GEAR, 23.2"
"GEAR, 16, 40.8"
No.4
"GEAR, 67.2"
No.4
"COMBINATION GEAR,
8, 14.4"
No.6
No.7
6-6 Rev. A
Chapter 6 Maintenance
"HOLDER, PULLEY, DRIVEN"
No.8
"HOPPER, ASSEMBLY"
No.10
"FRAME, ASF"
No.9
Rev. A 6-7