Troubleshoot - Onkyo HT-R495 Service Manual

1
No Sound (HDMI in)
Here the trouble shoot which focuses on the hardware troubles regarding PCB assembly is explained.
Of course, with actual repair there are also troubles due to damaged Power Transformer, Wiring, soldering etc. in addition to PCB assembly.
D
Process Check Point
P2802 (BAPRC-2695)
1
1 3 ca. +18V (+12VDG)
P7002 (BAPRC-2695)
2
3 ca. +3.3V (+3.3VDG)
(BAAF-2690)
3
J4251 ca. +24V
C
(BAAF-2690)
4
J4187 ca. -15V
P7002 (BAPRC-2695)
5
12 ca. +3V (SPRLF)
P7003 (BAPRC-2695)
6
19 Audio Signal (DAC OUT)
(BAAF-2690)
7
J4101 Audio Signal (FL OUT, CLA-IN)
B
Q6001, Q6021 (BAAF-2690)
8
Base Audio Signal (FL OUT, CLA-OUT)
9
A
1
2
No Good
Damaged PCB
OK
BAPS-2674
BAPRC-2695
BAAF-2690
BAAF-2690
J4188 ca. +15V
BAAF-2690
BAPRC-2695
BAAF-2690
BACLA-2673
BAAF-2690
2
3 4
BAPRC-2695
BAPS-2674
3 4
5
Trouble Shoot
BACLA-2673
BAAF-2690
TX-SR292BT/SR393/SR494, HT-R398/R495
5
6
D
P7001
C
BADIS-2672
B
A
6