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TROlJELESHOOTlAfG
Table 57. Printer Mechanism Repair 3 I4
Symptom
I
cause
I
The RF motor
1 The parallelism value
Checkpoint
1 Check whether the carriaae moves
I
does not operate. 1 is incorrect.
1 smoothly when moved m&uall~
(Check that foreign objects arena
lodged in the printer mechanism.)
The RF motor
3oes not operate
The PG motor
joes not operate,
‘Ming continues
ast the end of
1e paper.
Vhen paper jams
,e printer does
ot beep.
libbon Jam error
cam even the
bbon is fed
3rrectly.
The RF motor is
Check the coil resistance of the RF
~ defective.
motor. (It should be about 150 ohms i
10 %.)
The backlash value is
incorrect.
Check whether the carriage guide shaft
rotates smoothly when rotated
manually.
le PG encoder
1 Check the outout sional of the
rl
~~=~~_~ _~ .~._ PG
sensor is defective
encoder sendr. (Refer to Table 5-6.)
The encoder plate is 1 Check whether the encoder plate is
defective.
broken or stained
The PG home sensor
is defective
Check the continuity of the sensor.
(Check the status of the two micro
witches.),
The PG motor is
Check the coil resistance of the PG
defective.
motor. (It should be about 260 ohms +
18 ohms.)
The front, rear, or top
Check the PE sensor.
PE sensor is
defective.
The paper jam sensor Check the paper jam sensor.
is defective.
Ribbon jam sensor is
Check the ribbon jam sensor.
defective.
Solutiin
Perform the
paralleliim
adjustment, as
described in Section
4.x.x.
Replace the RF
Loosen the 2 screw
securing the PG
motor to the left side
frame. Then adjust
:he backlash
3etween the PG
notor pinion gear
3rd the carriage
guide shaft gear, as
lesctibed in Char&
t, Adjustments.
3eplace the PG
?ncoder sensor.
3eplace the PG
notor or clean the
?ncoder plate.
3eplace the PG
wne sensor (micro
witch
)
3eplace the.PG
notor,
Replace the PE
iensor.
leplace the paper
un sensor.
lep!=ace the ribbon
*m sensor.
Rev. A
5-25