Low-Voltage Power Supply Pcb Assy - Brother HL 1240 - B/W Laser Printer Service Manual

3.13 Low-Voltage Power Supply PCB ASSY

(1) Remove the M3x8 Taptite screw to remove the insulation sheet.
(2) Slightly lift up the low-voltage power supply PCB ASSY from the frame and disconnect the
engine PCB connector. Then lift the power supply PCB ASSY further and disconnect the
halogen heater lamp connector.
(3) Remove the M3.5x6 screw to disconnect the ground wire from the base plate.
Taptite, bind M3x8
Insulation sheet
Low-voltage power
supply PCB ASSY
AC inlet holder
Ground wire
Screw M3.5x6
Base plate
(4) Remove the M3x6 Taptite screw securing the AC inlet holder.
(5) Turn the AC inlet to the right to release it and remove the AC inlet ASSY and the low-
voltage power supply PCB together.
AC inlet holder
Taptite, cup M3x6
(positioning boss)
NOTE:
When re-assembling the AC inlet holder, fix the holder onto the positioning bosses first, then
secure it to the frame with the screw. (Refer to the figure above.)
Fig. 4-48
Main frame
Fig. 4-49
CHAPTER 4 DISASSEMBLY AND RE-ASSEMBLY
Engine PCB connector
4-27
Low-voltage power
supply PCB ASSY
Step (2)
Halogen heater
lamp connector