SNLUS
800 Service
Manual
Troubleshooting
Table 5-7. Repair of Printer Mechanism (Continued)
Symptom Condition
Cause
Checkpoint
Solution
The head cable is
Check the head cable for Replace the
disconnected. disconnection. cable.,
The carriage
Printing is not
moves, but no
The
printhead
is Replace the
printhead
to
Replace the
performed.
printing is
defective.
see if the
printhead
operates normally. printhead.
performed. Ink absorption is See “Ink is not absorbed”
poor.
on the previous page.
Printhead
surface
Perform the cleaning
Clean.
is not clean. operation.
A particular dot
The head cable is Check the head cable for
Replace the
is not printed. disconnection. disconnected. cable.
The
printhead
is Replace the
printhead.
Replace the
defeotive. printhead.
Printhead
surface
Check front of the
is not clean. Clean.
printhead.
The expiration of Check the ink cartridge for Replace the
the ink
oartridge.
expiration.
ink cartridge.
Cheek whether the cable
Plug the
oable
Insufficient
is properly plugged into
into the
A dot is not contact of the the connector. conneotor
printed head cable. properly.
Abnormal occasionally. Cheek the cleanliness. Clean.
printing.
The
printhead
is Replace the
printhead
to
defective. see if this causes printing Replace.
to be performed normally.
Ink is
lmorly
Check whether the used See “Ink is not
absorbed. ink goes through the used
ink tube.
absorbed”.
Printhead
The paper gap is
characters are Check the paper gap.
not adjusted. Adjust the gap.
not aligned.
The intervals
between the The timing bett is Cheek that the timing belt Set the timing
characters are defective. is properly inserted into
the bottom of carriage. belt properly.
irregular.
Vertical line is
Bidirectional
Adjust the check it with Adjust the
alignment is not
bi-directional
alignment
not aligned.
bi-directional
adjusted. program. alignment.
Foreign substance Visually check the paper Remove any
are lodged in the
foreign
paper path.
path.
substance.
Paper is not fed Paper is not fed. Paper feeding Replace
normally. gears are Visually check the gears. defective
defective. gears.
The paper feed
Measure the coil Replace the
motor is defective. resistance of the
PF.
motor. PF motor.
Rev.
A
5-13