Repair; Notes On Service Part Replacement; Special Notes On Repair Servicing; Adjustment / Settings - Canon MP638 Service Manual

MP630 / MP638

3. REPAIR

3-1. Notes on Service Part Replacement (and Disassembling / Reassembling)
Service part
Logic board ass'y
Absorber kit
Carriage unit
Switch system unit
Paper feed motor
Platen unit
Spur unit
Notes on replacement
- 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 ink
absorber counter value (by
service test print or EEPROM
information print).
- The red screws securing the paper
feed motor are allowed to be
loosened only for paper feed
motor replacement. (DO NOT
loosen them in any other cases.)
- DO NOT contact the spur edges.
*1

Adjustment / settings

After replacement:
1. Initialize the EEPROM.
2. Set the ink absorber counter
value.
3. Set the destination in the
EEPROM.
4. Correct the CD / DVD and
automatic print head alignment
sensors.
5. Check the ink system function.
6. Perform LF / Eject correction.
7. Perform button and LCD test.
Perform 1 to 7 in the service
mode.
[See 3-3. Adjustment / Settings,
(6) Service mode, for details.]
8. Perform print head alignment
and LCD language setting in the
user mode.
After replacement:
1. Reset the ink absorber counter.
[See 3-3. Adjustment / Settings,
(6) Service mode, for details.]
At replacement:
1. Before removal of the carriage
rail, mark the carriage rail
position.
[See 3-2. Special Notes on
Repair Servicing, (7) Carriage
unit removal, for details.]
2. Apply grease to the sliding
portions of the carriage rail.
[See 3-3. Adjustment / Settings,
(3) Grease application, for
details.]
3. Check the ink system function.
[See 3-3. Adjustment / Settings,
(6) Service mode, for details.]
4. Perform print head alignment in
the user mode.
At replacement:
1. Adjust the paper feed motor.
[See 3-3. Adjustment / Settings,
(1) Paper feed motor
for details.]
After replacement:
1. Perform LF / Eject correction in
the service mode.
[See 3-3. Adjustment / Settings,
(6) Service mode, for details.]
After replacement:
1. Check the ink system function.
2. Perform LF / Eject correction in
the service mode.
[See 3-3. Adjustment / Settings,
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TABLE OF CONTENTS
Operation check
- EEPROM information print
- Service test print
- Printing via USB connection
- Copying
- Direct printing from a digital
camera (PictBridge)
- Ink absorber counter volume
print (After the ink absorber
counter is reset, the counter
value is printed automatically.)
- Service test print (Confirm
CD / DVD and automatic print
head alignment sensor
correction, and ink system
function.)
- EEPROM information print
- Service test print
adjustment,
- EEPROM information print
- Service test print
- EEPROM information print
- Service test print