Mitsubishi HS-U778, Руководство по обслуживанию

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CAUTION: BEFORE ATTEMPTING TO REMOVE OR
REPAIR ANY PCB, UNPLUG THE POWER
CORD FROM THE A.C. SOURCE.
LOCATION OF PRINTED 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.
PCB-JACK
PCB-OPE
PCB-SIGNAL
PCB-MAIN
HOW TO EXECUTE CIRCUIT BOARD SERVICE
Fig. 6
a
c
b
PCB - OPE
Fig. 7
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. Unfasten the one catch (
a
) shown in Fig. 7 and rotate
the PCB-OPE in the direction shown by arrow (
b
) and
remove it in the direction shown by arrow (
c
).
2. PCB-SIGNAL
1. Remove the Top Cover.
(Refer to Para. 1 of the DISASSEMBLY.)
2. Remove the one PCB Holder fastening screw (
a
) shown
in Fig. 8 and remove the PCB Holder.
3. Raise the PCB-SIGNAL upward to remove it as shown in
Fig. 8.
PCB Holder
PCB-SIGNAL
a
Fig. 8