Canon PIXMA MP170, Service Manual

Page: 18 / 70

*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, (1) Flexible cable and harness wiring, connection, 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 and timing slit disk film. No grease or abrasion is allowed.
- Protect the units from becoming soiled with ink.
- Protect the housing from scratches.
- Exercise caution with the red screws, as follows:
i. The red 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. Except for carriage replacement, DO NOT loosen the red screws (which secures the carriage shaft
positioning) on both sides of the main chassis.
After replacement of the carriage, print on thick paper to confirm that the distance between the
carriage shaft and the platen is proper, and there is no contact of the ink cartridges to the paper.
If the ink cartridges contact the paper, adjust the carriage shaft, while referring to [ 3-3. Adjustment /
Settings, (2) Main chassis and carriage rail adjustment. ]
Settings, (1) Paper feed
motor adjustment.]
Document pressure
plate ass'y
QM2-2809
Document pressure
sheet
QC1-7588
Scanner base unit
MP170: QM2-2798
MP450: QM2-2812
At sheet or unit
replacement:
1. Adjust the document
pressure sheet.
[See 3-3. Adjustment /
Settings, (3) Document
pressure sheet
adjustment.]
Timing slit strip film
QC1-4962
- 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 the print head
alignment in the user
mode.
- Service test print
Timing slit disk film
QC1-4833
To the table of contents To the top
<Part 1: 3. REPAIR, 3-1>
1-11