III-9
NOTE1: When reassembling, the connectors must be inserted fully into the PCB and the
PCB must not be lifted up by the harnesses.
NOTE2: The connectors should be inserted by matching the housing color and the number
of pins.
3.9
Low-Voltage Power Supply PCB Assy
(1)
Remove the screw securing the low-voltage power supply PCB assy and lift the PCB.
(2)
Disconnect the two connectors from the component side of the PCB.
Fig. 3.10
3.10
High-voltage Power Supply PCB Assy
(1) Remove the screw securing the high-voltage power supply PCB assy and lift the PCB.
(2) Disconnect the four connectors from the PCB.
Fig. 3.11
NOTE: When reassembling, the density volume adjuster knob must be fitted into the cutout
side of the density dial.
Insulation sheet
High-voltage power supply PCB assy
Drum ground PCB
harness (P4)
Fan motor harness (P2)
Erase lamp harness (P3)
HV Flat cable (P1)
Low-voltage power
supply PCB assy
Density dial
Heater harness
(CN1)
Density volume
LV harness (CN101)
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 ...