Read Sony STR-DH540 (serv.man2) Service Manual online
STR-DH540
6
Flow of Repair (when sound is not outputted) (5/5)
NG
OK
NG
Explain the settings of this unit to the customer.
Check that the speaker pattern setting is normal.
Check the surrounding circuit of power transistor of the channel to which data is not outputted (example: Q600 on the MAIN board) and the surrounding circuit of power amplifier circuit, and exchange the defective parts.
Check that the sound is outputted from each speaker, when the sound field is “A.F.D. AUTO”
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