Notes On Service Part Replacement And Disassembling/Reassembling - Canon iP4700 Simplified Service Manual

(2) Notes on Service Part Replacement (and Disassembling / Reassembling)
Service part Notes on replacement
Logic board ass'y - 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).
Absorber kit
Carriage unit
Switch system unit - The red screws securing
the paper feed motor are
allowed to be loosened
only for paper feed motor
Paper feed motor
replacement. (DO NOT
loosen them in any other
cases.)
Platen unit
*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 (only when
streaks or uneven printing
occurs).
Perform 1 to 6 in the service
mode.
7) Perform print head
alignment in the user mode.
After replacement:
1) Reset the ink absorber
counter.
At replacement:
1) Before removal of the
carriage rail, mark the
carriage rail position.
2) Apply grease to the sliding
portions of the carriage rail.
[See 2-2. Adjustment /
Settings, (2) Grease
application]
3) Check the ink system
function.
4) Perform print head
alignment in the user mode.
At replacement:
1) Adjust the paper feed motor.
After replacement:
1) Perform LF / Eject
correction in the service
mode (only when streaks or
uneven printing occurs).
(20/24)
Operation check
- EEPROM information print
- Service test print
- Printing via USB connection
- 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
- EEPROM information print
- Service test print