Brother International HL-720 Service Manual - Page 124
PCB must not be lifted up by the harnesses.
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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. Low-voltage power supply PCB assy Heater harness (CN1) LV harness (CN101) 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. Insulation sheet High-voltage power supply PCB assy Drum ground PCB harness (P4) Fan motor harness (P2) Erase lamp harness (P3) Density volume HV Flat cable (P1) Density dial Fig. 3.11 NOTE: When reassembling, the density volume adjuster knob must be fitted into the cutout side of the density dial. III-9
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