CHAPTER 6 TROUBLESHOOTING
CHAPTER 6 –1
CHAPTER 6
TROUBLESHOOTING
ALARM INDICATIONS AT A GLANCE
Operator Calls
If a recoverable error occurs, the printer indicates an ‘operator call’ by
blinking the Alarm lamp and any of the following lamps.
Find the error and take the proper action to correct it. The printer
automatically recovers from most errors, but you may need to reset the
printer with the panel switch as described below.
Blinking Lamp Error Action
Paper
❍↔●
Alarm
❍↔●
Paper jam Clear the paper jam referring to the next section
and press the panel switch if the
printer does not automatically resume printing.
Paper empty Load paper in the printer referring to
press the panel switch.
Misfeed Reinstall the paper and press the panel switch.
Toner
❍↔●
Alarm
❍↔●
(every 5 seconds)
Toner low Indicates that the printer has approximately 100
pages of printing left before the toner cartridge is
empty. Prepare a new toner cartridge.
Toner
❍↔●
Alarm
❍↔●
(Fast blinking)
Toner Empty Replace the toner cartridge with a new one
Summary of Contents for HL-720
Page 1: ...SERVICE MANUAL MODEL HL 720 730 730Plus R LASER PRINTER ...
Page 36: ...II 19 1 3 10 Engine I O HL 720 Fig 2 21 shows the engine interface circuit Fig 2 21 ...
Page 37: ...II 20 HL 730 730Plus Fig 2 22 shows the engine interface circuit Fig 2 22 ...
Page 61: ... Fig 3 18 2 4 1 1 1 ...
Page 92: ...SERVICE MANUAL MODEL HL 760 R LASER PRINTER ...
Page 109: ...II 8 1 3 4 DRAM Two 4M bit DRAMs x 16bits are used as the RAM Fig 2 6 ...
Page 113: ...II 12 1 3 10 Engine I O Fig 2 12 shows the engine interface circuit Fig 2 12 ...
Page 114: ...II 13 1 3 11 Paper Feed Motor Drive Circuit Fig 2 13 ...
Page 133: ...Appendix 2 Main PCB Circuit Diagram 1 3 CODE UK3227000 B48K272CIR 1 3 NAME ...
Page 134: ...Appendix 3 Main PCB Circuit Diagram 2 3 CODE UK3227000 B48K272CIR 2 3 NAME ...
Page 135: ...CODE UK3227000 B48K272CIR 3 3 NAME Appendix 4 Main PCB Circuit Diagram 3 3 ...