Repair; Notes On Service Part Replacement (And Disassembling / Reassembling) - Canon PIXMA iP4000 Service Manual

3. REPAIR

3-1. Notes on Service Part Replacement (and Disassembling / Reassembling)

Service part
Logic board ass'y
QM2-1548
Bottom case unit
QM2-1205
Ink absorber
QC1-4222 / 4223 / 4224 /
4263 / 4264 / 4864 / 4221 /
4257
Carriage unit
QM2-1209
Paper feed motor unit
QK1-0550
Notes on replacement *1
- Before removal of the logic board ass'y,
remove the power cord, and allow for
approx. 1 minute (for discharge of
capacitor's accumulated charges), to
prevent damages to the logic board
ass'y.
- Before replacement, check the waste
ink amount (by service test print or
EEPROM information print). If the
waste ink amount is 7% or more, also
replace the bottom case unit or the ink
absorbers when replacing the logic
board ass'y. See 3.3. Adjustment /
Settings, (6) Service mode, for details.
[See 3-3. Adjustment / Settings, (6)
Service mode, for details.]
- The red screws securing the paper feed
motor are allowed to be loosened. (DO
NOT loosen any other red screws.)
Adjustment / settings
After replacement:
1. Initialize the EEPROM.
2. Reset the waste ink counter.
3. Set the destination in the EEPROM.
4. Correct the CD-R and automatic print
head alignment sensors.
[See 3-3. Adjustment / Settings, (6)
Service mode, for details of 1 to 4]
5. Perform the print head alignment in
the user mode.
After replacement:
1. Reset the waste ink counter.
[See 3.3. Adjustment / Settings, (6)
Service mode.]
At replacement:
1. Apply grease to the sliding portions.
[See 3-3. Adjustment / Settings, (3)
Grease application.]
After replacement:
1. Correct the CD-R and automatic print
head alignment sensors.
[See 3.3. Adjustment / Settings, (6)
Service mode.]
2. Perform the print head alignment in
the user mode.
At replacement:
1. Adjust the paper feed motor.
[See 3-3. Adjustment / Settings, (1)
Paper feed motor adjustment.]
1 - 8
Operation check
- EEPROM information print
- Service test print
- Printing via parallel or USB
connection
- Direct printing from a digital camera
- Service test print
- Service test print (Confirm CD-R
and automatic print head alignment
sensor correction.)