Star Micronics NX-1020 - Page 65

– 61 –
TROUBLESHOOTING
NO
NO
NO
A
Paper feed
motor drive waveform is
normal? *2
YES
Replace printer mechanism.
A
1) Replace ink ribbon.
2) Replace printer mechanism.
1) Replace main logic board.
2) Replace printer mechanism.
*2 See (8) and (9) waveform in
item 10 of Chapter 7.
1) Replace main logic board.
2) Replace printer mechanism.
A
NO
Print head
drive signal waveform is
normal? *3
YES
Replace printer mechanism.
Printing operation
is normal?
YES
Paper feed
operation is
normal?
YES
Ribbon feed
operation is
normal?
YES
Terminates self printing.
Check host computer
connection.
Turn power off and check
I/F cable.
Turn power on.
Send print program from host
computer.
NO
C
2
3
*3 See (4) and (5) waveform in
item 10 of Chapter 7.