Repair; Notes On Service Part Replacement (And Disassembling / Reassembling) - Canon i900D Service Manual

3. REPAIR

3.1 Notes on Service Part Replacement (and Disassembling / Reassembling)

Service part
Logic board ass'y
(QM2-0813/0814)
Bottom case unit
(QM2-0663)
Ink absorber
(QC1-2232/2233/
2234/2235/2236)
Sheet feeder unit
(QM2-0589)
Carriage unit
(QM2-0662)
Paper feed motor
(QK1-0224)
*1
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 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.
- The red screws securing
the paper feed motor are
allowed to be loosened.
(DO NOT loosen any
other red screws.)
1 - 8
Adjustment / settings
After replacement:
1. Initialize the EEPROM.
2. Reset the waste ink
counter.
3. Set the destination in
the EEPROM.
4. Set the LCD viewer's
language.
5. Correct the media
sensor.
6. Correct the CD-R and
automatic print head
alignment sensor.
For details of 1 to 5, see
3.3. Adjustment / Settings,
(6) Service mode.
7. 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.
After replacement:
1. Correct the media
sensor. 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 sensor. 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.
Operation check
- EEPROM
information print
- Service test print
- Printing via USB
connection
- Direct printing
from a digital
camera
- Service test print
- Service test print
(Confirm media
sensor correction.)
- Service test print
(Confirm CD-R
and automatic print
head alignment
sensor correction.)