Defective Motor Operation - Star Micronics NX-1020 Technical Manual

4-3. Defective Motor Operation

START
LF-CMN
signal is normal?
*4
YES
LF-ø1,
ø2, ø3, ø4 are
normal? *5
YES
Replace
LF motor
Check operation
END
*4 See (8) waveform in item 10 of Chapter 7.
*5 See (9) waveform in item 10 of Chapter 7.
*6 See (6) waveform in item 10 of Chapter 7.
*7 See (7) waveform in item 10 of Chapter 7.
NO
Check and relace
1) TR5
2) TR4
3) CPU
NO
Check and replace
1) TA2
2) CPU
START
CR-CMN
signal is normal?
*6
YES
CR-ø1,
ø2, ø3, ø4 are
normal? *7
YES
Replace
CR motor
Check operation
END
– 67 –
TROUBLESHOOTING
NO
Check and relace
1) TR6
2) TR1
3) CPU
NO
Check and replace
1) TA1
2) CPU