How To Execute Circuit Board Service - Mitsubishi Electric HS-U449 Service Manual

HOW TO EXECUTE CIRCUIT BOARD SERVICE

CAUTION: BEFORE ATTEMPTING TO REMOVE OR
REPAIR ANY PCB, UNPLUG THE POWER
CORD FROM THE A.C. SOURCE.
LOCATION OF PRINT
CIRCUIT BOARDS
Note :
• Take caution when removing flat cables to prevent any
contact problem.
• Connect and disconnect the flat cables at right angles to
the connector and make sure that it is completely
secured.
• After servicing the PCB, restore the flat cable and leads
to their former state.
1. PCB-OPE
1. Remove the Top Cover.
(Refer to Para. 1 of the DISASSEMBLY.)
2. Remove the Front Panel.
(Refer to Para. 2 of the DISASSEMBLY.)
3. Remove the Connector OS.
4. Remove the screw (a) shown in Fig. 7 to remove the
PCB-OPE.
PCB - OPE
Connector OS
a
- 7 -
PCB - MAIN
Fig. 6
PCB-OPE
Fig. 7