III -
13
5.
HIGH-VOLTAGE POWER SUPPLY ASSY
5.1 Outline
The High-Voltage Power Supply Assy supplies the high-voltage for the charging roller, the
developer cylinder and the transfer roller according to the engine CPU’s control signals.
The block diagrams are shown Fig 3.10 and 3.11.
5.2 Operation of the Components of the High-Voltage Power Supply Assy
(1) Primary charging
When input signal/HV1AC gets the Low level, the primary high-voltage AC is applied to the
primary charging roller. And when input signal/HV1DC gets the Low level, the primary high-
voltage DC is applied to the primary charging roller. The primary high-voltage DC changes with
developer bias DC according to values of the input signal DNSTY which is for print density
adjustment.
(2) Developer bias
When input signal/DBAC gets the Low level, the developer bias AC is applied to the developer
cylinder. And when input signal/DBDC gets the Low level, the developer bias DC is applied to
the developer cylinder. The developer bias DC changes according to values of the input signal
DNSTY which is for print density adjustment, like the primary high-voltage DC.
(3) Transfer charging
Transfer bias is controlled by the input signals HVT1 - 4 and HVTFB. When the input signal/
HVT1 gets the Low level, negative high-voltage is applied to the transfer roller. When the input
signal/HVT2 gets the Low level, positive high-voltage is applied to the transfer roller. When the
input signal/HVT3 gets the Low level, positive high-voltage about 1100 times that of the input
signal HVT4 is applied to the transfer roller. The input signal HVTFB has voltage about 1/1100
times the positive voltage generated on the transfer roller. Once the engine CPU is informed of
this voltage, the bias applied to the transfer roller can be known.
Note: The HVT2 signal generates high-voltage irrespective of the HVT4 signal.
(4) Toner sensing
Voltage levels of the input signals TONER1 and TONER2 allow the engine CPU to check if the
cartridge is set or not and if toner is empty. The TONER1 carries the voltage generated at the
toner sensor and the TONER2 carries the developing bias output value.
Содержание HL-1660 Series
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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 7 CODE UK3787000 B48K294 295CIR 1 7 NAME A 3 ...
Страница 110: ...Appendix 4 Main PCB Circuitry Diagram 2 7 CODE UK3787000 B48K294 295CIR 2 7 NAME A 4 ...
Страница 111: ...Appendix 5 Main PCB Circuitry Diagram 3 7 CODE UK3787000 B48K294 295CIR 3 7 NAME A 5 ...
Страница 112: ...Appendix 6 Main PCB Circuitry Diagram 4 7 CODE UK3787000 B48K294 295CIR 4 7 NAME A 6 ...
Страница 113: ...Appendix 7 Main PCB Circuitry Diagram 5 7 CODE UK3787000 B48K294 295CIR 5 7 NAME A 7 ...
Страница 114: ...Appendix 8 Main PCB Circuitry Diagram 6 7 CODE UK3787000 B48K294 295 CIR 6 7 NAME A 8 ...
Страница 115: ...Appendix 9 Main PCB Circuitry Diagram 7 7 CODE UK3787000 B48K294 295CIR 7 7 NAME A 9 ...
Страница 116: ...Appendix 10 Control Panel PCB Circuitry Diagram 1 1 A 10 CODE NAME UK2527000 B48K143CIR ...
Страница 117: ...Appendix 11 Scanner LD PCB Circuitry Diagram 1 1 A 11 CODE NAME UK2674000 B48K165CIR ...
Страница 118: ...I Brother Laser Printer HL 1260e HL 1660 series USER S GUIDE ...
Страница 327: ...USER S GUIDE Appendix 16 HP LaserJet Mode Roman 8 8U ISO Latin1 0N ISO Latin2 2N ISO Latin5 5N ...
Страница 328: ...APPENDICES Appendix 17 PC 8 10U PC 8 D N 11U PC 850 12U PC 852 17U ...
Страница 329: ...USER S GUIDE Appendix 18 PC 8 Turkish 9T Windows Latin1 19U Windows Latin2 9E Windows Latin5 5T ...
Страница 330: ...APPENDICES Appendix 19 Legal 1U Ventura Math 6M Ventura Intl 13J Ventura US 14J ...
Страница 331: ...USER S GUIDE Appendix 20 PS Math 5M PS Text 10J Math 8 8M Pi Font 15U ...
Страница 332: ...APPENDICES Appendix 21 MS Publishing 6J Windows 3 0 9U Desktop 7J MC Text 12J ...
Страница 334: ...APPENDICES Appendix 23 ...
Страница 336: ...APPENDICES Appendix 25 PC 8 PC 8 D N PC 850 PC 852 ...
Страница 337: ...USER S GUIDE Appendix 26 PC 860 PC 863 PC 865 PC 8 Turkish ...
Страница 338: ...APPENDICES Appendix 27 IBM Mode PC 8 PC 8 D N PC 850 PC 852 ...
Страница 339: ...USER S GUIDE Appendix 28 PC 860 PC 863 PC 865 PC 8 Turkish ...
Страница 340: ...APPENDICES Appendix 29 HP GL Mode ANSI ASCII 9825 CHR SET ...
Страница 341: ...USER S GUIDE Appendix 30 FRENCH GERMAN SCANDINAVIAN SPANISH LATIN JIS ASCII ...
Страница 342: ...APPENDICES Appendix 31 ROMAN8 EXT ISO IRV ISO SWEDISH ISO SWEDISH N ...
Страница 343: ...USER S GUIDE Appendix 32 ISO NORWAY 1 ISO GERMAN ISO FRENCH ISO U K ...
Страница 344: ...APPENDICES Appendix 33 ISO ITALIAN ISO SPANISH ISO PORTUGUESE ISO NORWAY 2 ...
Страница 407: ...LASER PRINTER PARTS REFERENCE LIST HL 1660e ...
Страница 414: ...5 MAIN PCB MODEL HL 1660e 54T U03 103 4 4 4 1 2 2 6 4 5 3 4 1 ...
Страница 420: ...10 TRANSFER 54T U03 600 11 PAPER TRAY 54T U03 650 651 1 2 3 1 2 3 4 6 1 10 8 8 5 9 10 7 MODEL HL 1660e MODEL HL 1660e ...
Страница 426: ...15 DOCUMENTS 54T U03 920 MODEL HL 1660e 5 4 7 6 8 T I NO PR98209 PR98263 PR98280 PR98310 1 2 3 ...
Страница 430: ...18 ADJUSTING TOOL KIT 54T U03 99A 9 1 10 11 12 13 14 29 31 43 D N O 44 96 46 78 A 87 164 MODEL HL 1660e T I NO PR98047 ...