HL-5240/5250DN/5270DN/5280DW SERVICE MANUAL
Confidential
5-29
7.12 Main PCB
(1) Remove the four cup S M3x6 SR Taptite screws, remove the FG harness and then
remove the Shield cover.
Fig. 5-30
(2) Disconnect the five connectors and six flat cables from the Main PCB.
NOTE:
- After disconnecting the flat cable(s), check that each cable is not damaged at its end or
short-circuited.
- When connecting the flat cable(s), do not insert it at an angle. After insertion, check that
the cable is not at an angle.
Fig. 5-31
Assembling Note:
When assembling the Main PCB, ensure to place the Ferrite Core correctly. Refer to
“APPENDIX 7.LOCATION OF THE FERRITE CORE” in details.
Shield cover
Taptite, cup S M3x6 SR
Taptite, cup S M3x6 SR
LD harness (Flat cable)
DX solenoid connector
Panel PCB connector
Relay front (Flat cable)
Main PCB
Polygon motor (Flat cable)
LVPS PCB connector
Main motor (Flat cable)
HVPS PCB (Flat cable)
LT connector
Relay rear (Flat cable)
FG harness
Wireless PCB connector (For HL-5280DW)
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