IV-3
1.2
Error codes
In the event of a printer failure, error codes will be indicated as shown below. All the
LEDs and the specific LEDs are turned ON alternately. The specific combination of
ON LEDs indicates the type of error.
Type of error
DATA
READY
ALARM
DRUM
Fuser Malfunction
Laser BD Malfunction
Scanner Malfunction
ROM Error
D-RAM Error
Service A *
Service B *
NV-RAM Error *
CPU Runtime Error
* Refer to the further description of those errors as follows;
•
Service A:
Address Error
•
Service B:
Bus Error
•
CPU Runtime Error:
Other CPU errors such as Illegal Instruction or Operation
Overflow
LED error indications
FUSER MALFUNCTION
DRUM
ALARM
READY
(PAPER)
DATA
(TONER)
A lapse of time
: OFF
: ON
Содержание HL-720
Страница 1: ...SERVICE MANUAL MODEL HL 720 730 730Plus R LASER PRINTER ...
Страница 36: ...II 19 1 3 10 Engine I O HL 720 Fig 2 21 shows the engine interface circuit Fig 2 21 ...
Страница 37: ...II 20 HL 730 730Plus Fig 2 22 shows the engine interface circuit Fig 2 22 ...
Страница 61: ... Fig 3 18 2 4 1 1 1 ...
Страница 92: ...SERVICE MANUAL MODEL HL 760 R LASER PRINTER ...
Страница 109: ...II 8 1 3 4 DRAM Two 4M bit DRAMs x 16bits are used as the RAM Fig 2 6 ...
Страница 113: ...II 12 1 3 10 Engine I O Fig 2 12 shows the engine interface circuit Fig 2 12 ...
Страница 114: ...II 13 1 3 11 Paper Feed Motor Drive Circuit Fig 2 13 ...
Страница 133: ...Appendix 2 Main PCB Circuit Diagram 1 3 CODE UK3227000 B48K272CIR 1 3 NAME ...
Страница 134: ...Appendix 3 Main PCB Circuit Diagram 2 3 CODE UK3227000 B48K272CIR 2 3 NAME ...
Страница 135: ...CODE UK3227000 B48K272CIR 3 3 NAME Appendix 4 Main PCB Circuit Diagram 3 3 ...