Star Micronics NX-1020 - Page 64

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TROUBLESHOOTING
1) Replace main logic board.
2) Replace printer mechanism.
NO
1) Replace main logic board.
2) Replace printer mechanism.
A
NO
NO
A
A
Self
printing:
Carriage motor
drive waveform is
normal? *1
YES
Replace printer mechanism.
NO
NO
NO
Replace control panel board.
NO
On line lamp
signal is normal?
Replace main logic board.
E
YES
Paper feed
motor drive waveform
is normal? *2
YES
Replace printer mechanism.
*2 See (8) and (9) waveform in
item 10 of Chapter 7.
*1 See (6) and (7) waveform in
item 10 of Chapter 7.
1
2
On line lamps light?
YES
Press on line switch to take
off line.
On line lamp is out?
YES
Press paper feed switch.
Paper feed switch
operation is normal?
YES
Turn power off.
Holding paper feed switch,
turn power on.
Carriage operates
normally?
YES