
– 57 –
1) Replace main logic
board.
2) Replace printer
mechanism.
A
NO
NO
A
NO
1) Replace main logic
board.
2) Replace printer
mechanism.
A
NO
Home position
switch signal is
normal?
YES
Replace main logic board.
3. Repair by Unit Replacement
B
Carriage motor
operating waveform is
normal? *1
YES
Replace printer mechanism.
NO
*1 See (6) and waveform in
item 7 of Chapter 7.
1
START
* Turn power off.
* Remove I/F cable.
* Mount ink ribbon.
* Set paper.
* Move carriage to center.
Turn power on.
Carriage
Moves?
YES
Carriage operates
normally?
YES
Carriage
stops at home
position?
(left side)
YES
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