Yamaha HTR-5920 Service Manual page 14

HTR-5920
Is recognition
of digital source
14
Start
Power on
NO
correct?
YES
D
C
Are input
NO
waveforms of IC32
(pin 57 and 59)
correct?
YES
Are
power voltage
NO
and oscillation of
IC32 correct?
YES
Are
waveforms
NO
of IC32 (pin 14 to 20)
correct?
YES
Are
waveforms of
NO
IC31 (pin 6, 7 and 18)
correct?
YES
Are
waveforms
NO
of IC31 (pin 39 to 41)
correct?
YES
Are
waveforms
NO
of IC32 (pin 39 to 50)
correct?
YES
Check analog part
Check connections for
external device
Check power supply
part and crystal
oscillation part
Check and replace
IC32
Check and replace
IC32
Check and replace
IC32
Check and replace
IC32