Customer Maintenance - Canon MP638 Service Manual

1-2. Customer Maintenance

Adjustment
Automatic print - At print head replacement
head alignment - When print quality is not satisfying (uneven
printing, etc.)
Manual print head - At print head replacement
alignment - When print quality is not satisfying (uneven
printing, etc.)
Print head cleaning When print quality is not satisfying.
Print head deep When print quality is not satisfying, and not
cleaning improved by print head cleaning.
Ink tank When an ink tank becomes empty. ("No ink error"
replacement displayed on the monitor or on the machine LCD,
or short flashing of an ink tank LED)
Paper feed roller - When paper does not feed properly.
cleaning - When the front side of the paper is smeared.
Bottom plate When the back side of the paper is smeared.
cleaning
Scanning area When the platen glass or document pressure sheet
cleaning is dirty.
Exterior cleaning When necessary
Timing
3 / 45
Purpose
To ensure accurate dot
placement.
To ensure accurate dot
placement.
To improve nozzle conditions.
To improve nozzle conditions.
To replace the empty ink tank.
To clean the paper feed rollers
of the selected paper source
(rear tray or cassette).
To clean the platen ribs. (Feed
the paper from the rear tray.)
To clean the platen glass and
pressure sheet.
To clean the machine exterior,
or to wipe off dusts.
Approx.
Tool
time
- Machine 7 min. (Use
buttons MP-101.)
- Matte Photo
Paper (MP-
101)
- Computer (MP
driver)
- Machine 10 min.
buttons
- Computer (MP
driver)
- Machine 1 min.
buttons
- Computer (MP
driver)
- Machine 2 min.
buttons
- Computer (MP
driver)
--- 1 min.
- Machine 2 min.
buttons
- Computer (MP
driver)
- Machine 1 min.
buttons
- Computer (MP
driver)
Soft, dry, and 1 min.
clean lint-free
cloth.
Soft, dry, and 1 min.
clean lint-free
cloth.