Mitsubishi SD200U, Service Manual

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Power source system 2
NO
YES
YES
NO
NO
YES
Check the circuit around D9A0
Abnormal video or audio.
Display of NO SIGNAL
Fan stop
Fan stop
No sound
No sound
Check the circuit around IC9A3.
NO
YES
NO
YES
Insert the RD connector.
Malfunction of PCB-FAN.
Malfunction of PCB-TERMINAL.
Insert or replace them.
When the stand-by power source
is abnormal.
Are RD and SD
connectors OK?
YES
Are RC and FC
connectors OK?
Pull out the RD connector of RD-SD
Is the pin No. 1 of the
RD connector -6V?
Is the pin No. 11 of the
RD connector 12V?
Solved by replacing
the PCB-FAN?
NO Check the circuit around D9A2.
Disconnect
the RC side of the RC-FC
lead wire. Is the pin No.2 of
the RC connector 13V
or more?
Insert or replace them.
YES
NO
Insert the RC connector.
YES
Are RG and AG
connectors OK?
NO
Check the circuit around D9A3
Disconnect
the RG side of the RG-AG
lead wire. Is the pin No.2 of
the RG connector 13V
or more?
Insert or replace them.
Using the shielding case as GND is allowed when
checking the voltage waveform or terminal voltage.