*1: General notes:
- Make sure that the flexible cables and wires in the harness are in the proper position and connected correctly. See
3-2. Special
Notes on Repair Servicing
or the Parts Catalog for details.
- 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 machine 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 MP630 / MP638 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.
(6) Service mode
, for details.]
Purge drive system unit
After replacement:
1. Confirm the purging operation
and the machine operation.
[See
3-4. Verification After
Repair
for details.]
- Service test print
Carriage rail and main
chassis
At replacement:
1. Apply grease to the sliding
portions.
[See
3-3. Adjustment / Settings,
(3) Grease application
, for
details.]
- Service test print
Idler pulley parallel pin
Easy-Scroll Wheel base
APP code wheel gear shaft
Document pressure sheet
After replacement:
1. Confirm the document pressure
plate sheet position.
[See
3-3. Adjustment / Settings,
(2) Document pressure sheet
replacement
, for details.]
- Service test print
Document bottom cover
Scanner unit
Panel board ass'y
- Be cautious not to scratch or
damage the LCD cable.
At replacement:
1. Perform button and LCD test.
[See
3-3. Adjustment / Settings,
(6) Service mode
, for details.]
- Service test print
LCD viewer unit
Timing slit strip film
- Upon contact with the film, wipe
the film with ethanol.
- Confirm no grease is on the film.
(Wipe off any grease thoroughly
with ethanol.)
- Do not bend the film
After replacement:
1. Perform print head alignment in
the user mode.
2. Perform LF / Eject correction in
the service mode.
[See
3-3. Adjustment / Settings,
(6) Service mode
, for details.]
- EEPROM information print
- Service test print
Timing slit disk feed film
Timing slit disk eject film
Print head
After replacement:
1. Perform print head alignment in
the user mode.
- Service test print
<3-1. Notes on Service Part Replacement>
15 / 45
