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5. Analog audio
No sound is output
YES
Is the voltage of ±12V supplied to
CN405 of MAIN PWB?
YES
Is the audio signal transmitted to
C196, C232 of MAIN PWB?
NO
Is the connector (CN400) correctly
connected with INPUT board?
YES
Once more, checking the connection of the connector.
When can specify the trouble of the channel and function, check the signal route
where it corresponds.
6. No Ether-net Operation
No connection with Ether-net
Check the LAN cable connection
In a network information on the home menu, and is "Link
STATUS" "Link UP"?
If see "Link UP", Set is fine.
Please check network environment.
7. No USB2 Operation
No connection with USB2(Back panel)
Is this USB flash memory broken?
Is the wire between CN202 (MAIN PWB) and J13 (BE PWB)
surely connected?
Replace the BE PWB.
NO
The power supply of ±12V is repaired.
YES
The power amplifier is repaired.
NO
Connect the connectors properly.
YES
YES
YES
YES
NO
YES
NO
Replace BE PWB if it is "Link DOWN".
YES
Use the normal USB flash memory.
NO
The wire connects surely.
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