User Guide

1 - 6
2.4 Troubleshooting by Symptom
Symptom Solution Remarks
The power does not turn on.
The power turns off immediately
after power-on.
Replace the
- AC adapter,
- battery pack,
- DCDC board ass’y, or
- logic board ass’y
*1
.
To check the AC adapter,
with the AC adapter alone
and turned on, connect the
tester, and confirm that the
output voltage fluctuates
regularly between 13.5V
to 16.5V.
The print head is not recognized.
The print head does not move to the
home position.
Remove and re-install the print
head, or replace the print head, or
logic board ass’y
*1
.
A strange noise occurs. Remove foreign material, or
attach a removed part if any.
The ink tank is not recognized. (The
no ink tank error occurs even when
the ink tanks are seated.)
Replace the print unit (the ink
tank sensor is faulty).
Faulty operation
Printing stops mid-way. Replace the logic board ass’y
*1
.
Multiple sheets feed. Replace the print unit.
Paper does not feed. Remove foreign material, or
replace the print unit, or the
pressing plate unit.
Paper feed problems
Paper feeds at an angle. Remove foreign material, adjust
the paper guide, or replace the
pressing plate unit.
No printing, or no color ejected. Replace the
- ink tank,
- print head
*2
,
- DCDC board ass’y,
- logic board ass’y
*1
, or
- print unit.
Printing is faint, or white lines
appear on printouts even after print
head cleaning.
Line(s) not included in the print
data appears on printouts.
Remove and re-install the print
head, or replace the
- ink tank,
- print head
*2
,
- print unit, or
- logic board ass’y
*1
.
Paper gets smeared. Feed several sheets of paper, clean
the paper path with cotton swab or
cloth, or replace the print unit.
A part of a line is missing on
printouts.
Replace the
- ink tank, or
- print head
*2
.
Color hue is incorrect. Replace the print head
*2
.
Printing is incorrect. Replace the
- print unit, or
- logic board ass’y
*1
.
No ejection of black ink. Replace the
- ink tank, or
- print head
*2
.
Unsatisfactory print quality
Graphic or text is enlarged on
printouts.
Clean grease or oil off the timing
slit strip film, or replace the print
unit, or logic board ass’y
*1
.
*1: As the waste ink counter is reset when the logic board ass’y is replaced, replace also the 4-item set of the
drain pack ass’y (QL2-0194) and the 3 ink absorbers (QC1-1210/1211/1212) at the same time.
*2: Replace the print head only after the print head deep cleaning is performed 2 times, and when the
problem persists.