Canon iP4700 Simplified Service Manual page 21

Service part Notes on replacement
Spur unit - DO NOT contact the
spur edges.
Purge drive system
unit
Carriage rail and
main chassis
Idler pulley parallel
pin
Easy-Scroll Wheel
base
APP code wheel
gear shaft
Timing slit strip film - Upon contact with the
film, wipe the film with
ethanol.
Timing slit disk
- Confirm no grease is on
feed film
the film. (Wipe off any
Timing slit disk
grease thoroughly with
eject film
ethanol.)
- Do not bend the film.
Print head
*1: General notes:
- Make sure that the flexible cables and wires in the harness are in the proper position and
connected correctly.
- Do not drop the ferrite core, which may cause damage.
- Protect electrical parts from damage due to static electricity.
- Before removing a unit, after removing the power cord, allow the printer to sit for approx. 1 minute
(for capacitor discharging to protect the logic board ass'y from damages).
- Do not touch the timing slit strip film, timing slit disk feed film, and timing slit disk eject film. No
grease or abrasion is allowed.
- Protect the units from soiled with ink.
- Protect the housing from scratches.
- For the the iP4700 / iP4760 automatic print head alignment, use Matte Photo Paper (MP-101) to
ensure alignment accuracy.
- Exercise caution with the screws, as follows:
i. The screws of the paper feed motor may be loosened only at replacement of the paper
feed motor unit (DO NOT loosen them in other cases).
ii. Before loosening the 3 screws that fix the carriage rail to the main chassis, mark the
screw positions so that the carriage rail will be re-attached to the main chassis in its
original position.
*1
Adjustment / settings
After replacement:
1) Check the ink system
function.
2) Perform LF / Eject
correction in the service
mode (only when streaks or
uneven printing occurs).
After replacement:
1) Confirm the purging
operation and the printer
operation.
At replacement:
1) Apply grease to the sliding
portions.
After replacement:
1) Perform print head
alignment in the user mode.
2) Perform LF / Eject
correction in the service
mode (only when streaks or
uneven printing occurs).
After replacement:
1) Perform print head
alignment in the user mode.
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Operation check
- EEPROM information print
- Service test print
- Service test print
- Service test print
- EEPROM information print
- Service test print
- Service test print