Canon i9900, i9950 服务手册
1 - 8
(Troubleshooting by Symptom - cont’d -)
Symptom
Solution
Remarks
No printing, or no ink ejected.
*3
Replace
the
- ink tank,
- print head
- print head
*2
,
- logic board ass’y
*1
, or
- purge unit.
Perform the
cleaning
operation
(for all
colors)
cleaning
operation
(for all
colors)
Printing is faint, or white lines
appear on printouts even after
print head cleaning.
appear on printouts even after
print head cleaning.
*3
Line(s) not included in the print
data appears on printouts.
data appears on printouts.
Remove and re-install the print head, or replace the
- ink tank,
- print head
- ink tank,
- print head
*2
,
- purge unit, or
- logic board ass’y
- logic board ass’y
*1
.
Paper gets smeared.
Feed several sheets of paper, or clean the paper path and
ribs on the platen with cotton swab or cloth.
ribs on the platen with cotton swab or cloth.
A part of a line is missing on
printouts.
printouts.
*3
Replace the
- ink tank, or
- print head
- ink tank, or
- print head
*2
.
Color hues are incorrect. Replace
the
- ink tank, or
- print head
- print head
*2
, or
correct the media sensor, or
check the ink tank setting position.
check the ink tank setting position.
Perform the
cleaning
operation
(for all
colors)
cleaning
operation
(for all
colors)
Printing is incorrect.
Replace the logic board ass’y
*1
.
No ejection of ink.
*3
Replace
the
- ink tank, or
- print head
- print head
*2
.
Perform the
cleaning
operation
(for all
colors)
cleaning
operation
(for all
colors)
Un
satisfacto
satisfacto
ry
p
rin
t
qu
ality
ality
Graphic or text is enlarged on
printouts.
printouts.
When enlarged in the carriage movement direction, clean
grease or oil off the timing slit strip film, or replace the
- timing slit strip film,
- carriage unit, or
- logic board ass’y
grease or oil off the timing slit strip film, or replace the
- timing slit strip film,
- carriage unit, or
- logic board ass’y
*1
.
When enlarged in the paper feed direction, clean grease
or oil off the timing slit strip film, or replace the
- timing slit disk film,
- timing sensor unit, or
- logic board ass’y
or oil off the timing slit strip film, or replace the
- timing slit disk film,
- timing sensor unit, or
- logic board ass’y
*1
.
*1: Before replacement of the logic board ass’y, check the waste ink amount (by service test print or EEPROM
information print). If the waste ink amount is 7% or more, also replace the bottom case/out put tray unit
(bottom case unit) or the complete set of ink absorber when replacing the logic board ass’y.
(bottom case unit) or the complete set of ink absorber when replacing the logic board ass’y.
See Section 3.4
Adjustment / Settings, (6) Service mode, for details.
*2: Replace the print head only after the print head deep cleaning is performed 2 times, and when the problem
persists.
*3: Before returning the printer to users, empty ink in the print head once.
(See Section 3.3 Special Notes on Repair Servicing (2) Notes on after repair for trouble concerning printing
or re-installation of the print head.)
or re-installation of the print head.)