Brother International HL 1240 Service Manual - Page 90
Main PCB ASSY, Lower Tray Relay PCB ASSY For HL-1250 only
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Page 90 highlights
CHAPTER 4 DISASSEMBLY AND RE-ASSEMBLY 3.11 Main PCB ASSY (1) Remove the two M3x8 screws from the I/F plate to release the main PCB. (2) Lift the insulation sheet and remove the main PCB ASSY. (3) Disconnect the three connectors for the low-voltage power supply, engine PCB and LD. Insulation sheet Main PCB LD connector Engine PCB connector Low-voltage power supply connector ➁ ➀ Screw M3x8 I/F plate Fig. 4-46 3.12 Lower Tray Relay PCB ASSY (For HL-1250 only) (1) Remove the M3x6 Taptite screw and remove the lower tray relay PCB ASSY. Main frame Taptite, cup M3x6 Lower tray relay PCB ASSY Lower tray relay PCB ASSY Fig. 4-47 4-26
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CHAPTER 4
DISASSEMBLY AND RE-ASSEMBLY
4-26
3.11
Main PCB ASSY
(1)
Remove the two M3x8 screws from the I/F plate to release the main PCB.
(2)
Lift the insulation sheet and remove the main PCB ASSY.
(3)
Disconnect the three connectors for the low-voltage power supply, engine PCB and LD.
Fig. 4-46
3.12
Lower Tray Relay PCB ASSY (For HL-1250 only)
(1)
Remove the M3x6 Taptite screw and remove the lower tray relay PCB ASSY.
Fig. 4-47
Taptite, cup M3x6
Lower tray relay
PCB ASSY
Lower tray relay PCB ASSY
Main frame
Screw M3x8
Insulation sheet
Main PCB
Low-voltage power supply connector
Engine PCB connector
LD connector
I/F plate