Printer System: Black Streaks Or Bands; Printer System: Offset Image - NEC NEFAX 671 Service Manual

(13) Printer system: Black streaks or bands

<Troubleshooting Procedures>
Step Check
1 Is paper path dirty with toner?
2 Is PC Drum scratchy or dirty?
3 Is Fusing Roller scratchy or dirty?
4 Is the problem eliminated after checks have
been made up to step 3?

(14) Printer system: Offset image

Previous data
<Troubleshooting Procedures>
Step Check
1 Is Fusing Roller faulty?
2 Is Image Transfer Roller faulty?
<Typical Faulty Images>
4011T017AA 4011T023AA
Result
YES Clean.
YES Replace Drum Cartridge.
YES Replace Fusing Unit (Fusing
NO
<Typical Faulty Image>
Current data
4136T003AA
Result
YES Replace Fusing Unit (Fusing
YES Replace Image Transfer
T-37
Action
Roller).
Replace Controller/Mechani-
cal Control Board (PWB-P).
Action
Roller).
Roller.