Customer Maintenance - Canon MP640 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 When print quality is not satisfying.
cleaning
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
replacement error" 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. To clean the platen ribs.
cleaning
Scanning area When the platen glass or document pressure
cleaning sheet is dirty.
Exterior cleaning When necessary
Timing
3 / 54
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).
(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 5 min.
buttons
- 1 sheet of 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.