Brother International HL 1240 Service Manual - Page 92
Engine PCB ASSY / High-Voltage Power Supply PCB ASSY
UPC - 012502600855
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CHAPTER 4 DISASSEMBLY AND RE-ASSEMBLY PR99153 3.14 Engine PCB ASSY / High-Voltage Power Supply PCB ASSY (1) Remove the M4x12 Taptite screw to remove the insulation sheet. (2) Remove the three M4x12 Taptite screws securing the engine PCB and the high-voltage power supply PCB. (3) Lift the engine PCB and high-voltage power supply PCB together and disconnect the connector which connects two PCBs together to remove the high-voltage power supply PCB ASSY. (4) If necessary, remove the T/R electrode helical spring from the T/R plate. Screw, bind M4x12 Insulation sheet Step (3) Screw, bind M4x12 Engine PCB ASSY Screw, bind M4x12 T/R electrode helical spring Step (4) T/R plate High-voltage power supply PCB ASSY Fig. 4-50 ! CAUTION: Be sure not to lose the T/R electrode helical spring after removing it. NOTE: When re-assembling the T/R electrode helical spring onto the plate, press the spring onto the plate firmly with a flat bladed screwdriver and ensure that it is retained securely. 4-28