DAR-RH7000 - Sony Audio Service Manual (repair manual). Page 14

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14
1) Sound source checking
Compare the output condition between 
Tuner sound and DVD/HDD sound.
FM/AM tuner: OK, DVD/HDD: NG 
=>  Cable connection, etc.
2) Speaker output checking
By using a DVD test disc, compare the 
speaker output signals and waveforms.
2-4. Checking of SA-WSRH10
1) Sound source checking
If DVD and HDD sound cannot output, please check FM/AM tuner sound output.
If FM/AM tuner sound can output without any problem, please check the sound 
signal line from HCD to SA. (Cable connection, etc.)
2) Speaker output checking
By using DVD test disc, check each speaker output.
If one channel cannot output the sound, please compare the signal line and signal 
waveform with others.
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