Star Micronics NX-1020 Technical Manual page 68

TROUBLESHOOTING
D
I/F signal is
normal? *5
NO
Ready condition?
YES
There is data
transmission?
NO
Check hardware or host
computer print program.
C
E
On line switch
goes ON/OFF?
YES
On line lamp
drive signal is
normal?
YES
Replace control panel board.
A
*5 See (10) waveform in
item 10 of Chapter 7.
YES
NO
YES
I/F mode set
up properly?
Change I/F mode.
NO
NO
Replace main logic board.
– 64 –
YES
NO
1) Replace control panel board.
2) Replace main logic board.
1) Replace I/F cable.
2) Replace main logic board.
A