5432
1
6
D
C
A
B
D
C
A
B
5432
1
6
Trouble Shoot
TX-SR292BT/SR393/SR494, HT-R398/R495
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.
P7001
BACLA-2673
BADIS-2672
BAPRC-2695
BAPS-2674
BAAF-2690
No Sound (Analog in)
Process Check Point Damaged PCB
1
J4251(BAAF-2690)
BAAF-2690
2
J4187, J4188 (BAAF-2690)
BAAF-2690
3
P7002 (BAPRC-2695)
BAAF-2690
4
J4101 (BAAF-2690)
BAAF-2690
5
Q6001, Q6021 (BAAF-2690)
BACLA-2673
6 BAAF-2690
No Good
OK
J4251 ca. +24V
J4187 ca. -15V J4188 ca. +15V
12 ca. +3V (SPRLF)
Base Audio Signal (FL OUT, CLA OUT)
J4101 Audio Signal (FL OUT, CLA IN)
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