VI
- 1
CHAPTER
VI
TROUBLESHOOTING
4.
TROUBLESHOOTING OF MALFUNCTIONS
Is the voltage of P3-8 in the low-voltage power
supply PCB connector 0V?
Possible cause
Step
Check
Result
Remedy
PCBs
1
Does any PCB have the short circuit between
+24V and 0V,+5V and 0V or +24V and +5V?
Yes
Replace the PCB having the
short circuit.
Low-voltage
power supply
PCB
Main PCB
LV harness
DC fan motor
2
Yes
Replace the low-voltage power
supply PCB assy.
No
Replace the main PCB assy,
the LV harness or the DC fan
motor.
No DC power supplied
M-1
Possible cause
Step
Check
Result
Remedy
LCD module
1
Yes
No
Replace the main PCB assy,
the switch flat cable or the
control panel unit.
Malfunction of LCD display on the control panel.
M-2
Dose the voltage of the following signals
vary to 5V or 0V when the LCD displays are
changed through switch operations?
(Check following signals using the digital
memory scope with the trigger function for
this check)
Control panel
PCB
Switch flat cable
Main PCB
Signal
PAD4
PAD5
PAD6
PAD7
LCDRS
LCDE
Main PCB
P1-9
P1-5
P1-11
P1-4
P1-3
P1-2
Panel PCB
P1-13
P1-17
P1-11
P1-18
P1-19
P1-20
P2-4
P2-3
P2-2
P2-1
P2-7
P2-5
Replace the control panel
unit.
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LCD
7
8
9
10
4
6
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Malfunction of control panel LED lamps.
M-3
Possible cause
Step
Check
Result
Remedy
LED lamps
Dose the voltage of the following signals stay
0V while the "04 SELF TEST " is displayed
after switching the power on and stay 5V for
about 0.5 seconds after the message goes off?
(Do the LED lamps turn on and off in response
to the signal levels of 0V and 5V?)
1
Control panel
PCB
Switch flat cable
Main PCB
Signal
LED1(ON LINE)
LED2(READY)
LED3(DATA)
LED4(ALARM)
Main PCB
P1-13
P1-7
P1-1
P1-6
Panel PCB
P1-9
P1-15
P1-21
P1-16
Yes
No
Replace the control panel
unit.
---
---
---
---
Replace the main PCB assy
or the switch flat cable.
Содержание HL-1260
Страница 1: ...SERVICE MANUAL MODEL HL 1260 R LASER PRINTER ...
Страница 40: ...III 8 K D E F A C 2 C 3 C C 1 J B G 2 G 1 G H I Figure 3 6 Main PCB Circuit ...
Страница 108: ...Appendix 2 Paper Feed Size SW PCB Circuitry Diagram 1 1 A 2 CODE NAME UK2516000 B48K139 140CIR JW 27 95 P053 ...
Страница 109: ...Appendix 3 Main PCB Circuitry Diagram 1 8 A 3 CODE NAME UK2495000 B48K158 159CIR 1 8 ...
Страница 110: ...Appendix 4 Main PCB Circuitry Diagram 2 8 A 4 CODE NAME UK2495000 B48K158 159CIR 2 8 ...
Страница 111: ...Appendix 5 Main PCB Circuitry Diagram 3 8 A 5 CODE NAME UK2495000 B48K158 159CIR 3 8 ...
Страница 112: ...Appendix 6 Main PCB Circuitry Diagram 4 8 A 6 CODE NAME UK2495000 B48K158 159CIR 4 8 ...
Страница 113: ...Appendix 7 Main PCB Circuitry Diagram 5 8 A 7 CODE NAME UK2495000 B48K158 159CIR 5 8 ...
Страница 114: ...Appendix 8 Main PCB Circuitry Diagram 6 8 A 8 CODE NAME UK2495000 B48K158 159CIR 6 8 ...
Страница 115: ...Appendix 9 Main PCB Circuitry Diagram 7 8 A 9 CODE NAME UK2495000 B48K158 159CIR 7 8 ...
Страница 116: ...Appendix 10 Main PCB Circuitry Diagram 8 8 A 10 CODE NAME UK2495000 B48K158 159CIR 8 8 ...
Страница 117: ...Appendix 11 Control Panel PCB Circuitry Diagram 1 1 A 11 CODE NAME UK2527000 B48K143CIR ...
Страница 118: ...Appendix 12 Scanner LD PCB Circuitry Diagram 1 1 A 12 CODE NAME UK2674000 B48K165CIR ...
Страница 119: ...SERVICE MANUAL MODEL HL 1260e 1660 R LASER PRINTER ...
Страница 144: ...III 7 Figure 3 6 Main PCB Circuit A C 2 C 3 C J K B I H 1 H 2 C 1 H G G 1 G 2 F E D ...
Страница 168: ...CODE UK3268000 B48K259 235CIR 1 7 NAME Appendix 3 Main PCB Circuitry Diagram 1 7 ...
Страница 169: ...CODE UK3268000 B48K259 235CIR 2 7 NAME Appendix 4 Main PCB Circuitry Diagram 2 7 A 3 ...
Страница 170: ...CODE UK3268000 B48K259 235CIR 3 7 NAME Appendix 5 Main PCB Circuitry Diagram 3 7 A 4 ...
Страница 171: ...CODE UK3268000 B48K259 235CIR 4 7 NAME Appendix 6 Main PCB Circuitry Diagram 4 7 A 5 ...
Страница 172: ...CODE UK3268000 B48K259 235CIR 5 7 NAME A 6 Appendix 7 Main PCB Circuitry Diagram 5 7 ...
Страница 173: ...CODE UK3268000 B48K259 235CIR 6 7 NAME Appendix 8 Main PCB Circuitry Diagram 6 7 A 7 ...
Страница 174: ...CODE UK3268000 B48K259 235CIR 7 7 NAME Appendix 9 Main PCB Circuitry Diagram 7 7 A 8 ...
Страница 175: ...CODE UK3253000 B48K253CIR 1 1 NAME Appendix 11 Scanner LD PCB Circuitry Diagram 1 1 A 9 ...
Страница 188: ...PARTS REFERENCE LIST MODEL HL 1260e R LASER PRINTER ...
Страница 213: ...I Brother Laser Printer HL 1260e HL 1660 USER S GUIDE ...
Страница 421: ...APPENDICES Appendix 15 HP LaserJet 4 Mode Roman 8 8U ISO Latin1 0N ISO Latin2 2N ISO Latin5 5N ...
Страница 422: ...USER S GUIDE Appendix 16 PC 8 10U PC 8 D N 11U PC 850 12U PC 852 17U ...
Страница 423: ...APPENDICES Appendix 17 PC 8 Turkish 9T Windows Latin1 19U Windows Latin2 9E Windows Latin5 5T ...
Страница 424: ...USER S GUIDE Appendix 18 Legal 1U Ventura Math 6M Ventura Intl 13J Ventura US 14J ...
Страница 425: ...APPENDICES Appendix 19 PS Math 5M PS Text 10J Math 8 8M Pi Font 15U ...
Страница 426: ...USER S GUIDE Appendix 20 MS Publishing 6J Windows 3 0 9U Desktop 7J MC Text 12J ...
Страница 429: ...APPENDICES Appendix 23 PC 8 PC 8 D N PC 850 PC 852 ...
Страница 430: ...USER S GUIDE Appendix 24 PC 860 PC 863 PC 865 PC 8 Turkish ...
Страница 431: ...APPENDICES Appendix 25 IBM Mode PC 8 PC 8 D N PC 850 PC 852 ...
Страница 432: ...USER S GUIDE Appendix 26 PC 860 PC 863 PC 865 PC 8 Turkish ...
Страница 433: ...APPENDICES Appendix 27 HP GL Mode ANSI ASCII 9825 CHR SET ...
Страница 434: ...USER S GUIDE Appendix 28 FRENCH GERMAN SCANDINAVIAN SPANISH LATIN JIS ASCII ...
Страница 435: ...APPENDICES Appendix 29 ROMAN8 EXT ISO IRV ISO SWEDISH ISO SWEDISH N ...
Страница 436: ...USER S GUIDE Appendix 30 ISO NORWAY 1 ISO GERMAN ISO FRENCH ISO U K ...
Страница 437: ...APPENDICES Appendix 31 ISO ITALIAN ISO SPANISH ISO PORTUGUESE ISO NORWAY 2 ...