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Carriage
problem.
Perform the
self printing
test.
YES
Replace F3.
NO
NO
is C6
pin 106 "L"?
Replace ROM
and RAM.
YES
NO
Is Q202
Replace Q202.
normal?
YES
Replace IC6.
ned
YES
Check again.
NO
Is QA201
Replace QA201.
normal?
nasasscaset
NO
Is QA201
eplace
;
normal?
YES
YES
Replace IC6.
Is the
resistance of motor
Replace Carriage
coil(6.82) OK?
me
2Vidiv
YES
5V
Check carriage shaft,
eccentric cams and
its related gears.
IC6 (0?) -
Phase Signal Voltage Waveform
0.5msec/div
20V/div
74.4V
QA201 @).®). a) : (© Voltage Waveform
(DRAFT PRINTING)
R.QA
0.2msec/div
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