Philips MBD7020/12, Service Manual

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Troubleshooting
FLOW CHART NO.1
FLOW CHART NO.2
NO Power(The power cannot be turned on)
Check the Power Cable connect is ok or not
Check the fuse which location F1
is normal or not.
TEST CON4 “ECO”pin whether
has high level signal
Check and Change the connect cable
TEST Power supply voltage output CON4 each
plate is normal or not(+12V\DC5V\MCU\5V\P25V)
replace a new one Check & replace AMP&MCU BOARD
Replace the power board
Has not voice form the speaker
Check speakers boxes are connected correctly
Adjust the Volume
Yes
Check if the operate system in MUTE state
Yes
Yes
No
Yes
Retry again
Cancel the MUTE setup
Check&replace AMP&MCU board
Yes
Yes
No
No
No
Yes
Yes
No
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