Epson DLQ-3000 Service Manual page 159

DLQ-3000+
Condition
T T
Symptom :Paper is smudged with ink.
Ink smudges in the
printed area.
T T
Symptom :False printing.
The printer prints with
no paper loaded.
T T
Symptom :Color printing is abnormal.
Colors mix improperly.
Note: In case the PG/ribbon motor coil is shortened, check the driver circuit, since it might be
also shortened.
5-20
Table 5-17. Repair of the Printer Mechanism
Cause
Ribbon mask hole is
damaged.
Platen gap is not
properly adjusted.
PG motor is
defective.
PGHP sensor or PG
sensor is defective.
Paper sensor is
defective.
Ribbon motor is
defective.
Ribbon is caught in
the ribbon mask.
Check point
Solution
Y
Check point: Check if the ribbon mask hole
is damaged.
Y
Solution: Replace the ribbon mask.
Y
Check point: Check for the proper PG.
Y
Solution: Adjust the PG. (See Chapter 4.)
Y
Check point: Check the PG motor coil for
correct resistance (approximately 250 ).
(See Table 5-5 and Note.)
Y
Solution: Replace the PG motor.
Y
Check point: Check the PGHP sensor for
proper condition. (See Table 5-7.)
Y
Solution: Replace the PGHP sensor.
Y
Check point: Check the paper sensor for
proper condition. (See Table 5-7.)
Y
Solution: Replace the paper sensor.
Y
Check point: Check the ribbon motor coil
for correct resistance (approximately 76
).(See Table 5-5 and Note.)
Y
Solution: Replace the ribbon motor.
Y
Check point: Check if the mask surface
has any crack or damage.
Y
Solution: Replace the ribbon mask.
Rev. A