Pioneer SC-65 Service Manual page 34

1
B
A
Rec out no output
Same input Function?
(PreOUT is OK)
It is specification.
Tuner 
AUDIO ASSY CN3902
(Other Analog OK )
7,9 pin Signal
Check the audio signal in AUDIO ASSY
(CN3902 7,9 pinIC2501)
or replace AUDIO ASSY
BT in 
A-DAC BRIDGE ASSY
B
(Other Analog OK)
CN3792 12,14 pin Signal
Diagnose DAC HIGH ASSY
(arround IC2473,
audio signal JA 2102 CN 2104 )
or replace DAC HIGH ASSY
Diagnose AUDIO ASSY
Phono in 
(circuits arround IC2661)
(Other Analog OK)
or replace AUDIO ASSY
USB in 
FRONT HDMI USB ASSY
(Other Digital OK) JP8001 1 pin +13V
USB RECT ASSY
FU10 Open
C
Repair or replace
USB RECT ASSY
Front HDMI in  Rear HDMI inoutput
Diagnose FRONT HDMI USB ASSY
(arround IC8003) or replace
FRONT HDMI USB ASSY or HDMI
Cable from FRONT HDMI USB Assy
D
Diagnose DIGITAL MAIN ASSY
MEDIA SERVER in
(arround IC9204,IC9203)
(Other Digital OK)
or replace DIGITAL MAIN ASSY
E
F
34
1
2
Check the audio signal in AUDIO ASSY
No
(IC2501 71,72 pinJA2504 DVR OUT terminal)
or replace AUDIO ASSY
Yes
No AUDIO ASSY CN3902
8 pin +5V
Yes
No
Diagnose AUDIO ASSY
(circuits arround Q3901)
or replace AUDIO ASSY
Yes Check the audio signal in AUDIO ASSY
(CN 3001 12,14 pinIC2501 )
or replace AUDIO ASSY
No
Check DIGITAL MAIN
Yes
ASSY CN9202
2,3 pin Digital Signal
No
Yes
Replace FU10
No
Diagnose FRONT HDMI USB ASSY
(arround IC8001,IC8004,JA8001,CN8001)
or replace FRONT HDMI USB ASSY
No Diagnose or replace
DIGITAL MAIN ASSY
Yes
2
3
Yes
Replace TUNER MODULE
Yes Diagnose or replace
DIGITAL MAIN ASSY
No
SC-65
3
4
4