Diagnosis; Troubleshooting - Pioneer VSX-830-K Service Manual

1

5. DIAGNOSIS

5.1 TROUBLESHOOTING

A
No Power
This is just for general reference and does not including every single case.
No Power
Is Stand by?
(or ON → Stand by)
No
B
Is the fuse (F100) open?
No
Is the voltage +5.6 V?
(SMPS Assy CX101
pins 5, 6, 7)(C129 +side)
Yes
Is the voltage +5.6 V?
(DMAIN Assy
C
CN9502 pins 1, 2, 3)
Yes
Is the voltage +5.6 V?
(DMAIN Assy
CN602 pins 1, 2)
Yes
Is the voltage +5.6 V?
(CPU Assy
CN301 pins 1, 2)
Yes
Is the voltage +5.0 V?
D
(CPU Assy IC303 pin 4)
Yes
Is the voltage +3.3 V?
(CPU Assy IC305 pin 4)
Yes
Replace CPU Assy.
E
F
22
1
2
Yes
Is the error indicated?
(HDMI LED flashing?)
Yes
Refer to
"5.2 ERROR INDICATIONS".
Yes
Check D41, D103, T101, IC102 on
SMPS Assy or replace SMPS Assy.
No
Replace SMPS Assy.
No
Check cable connection between CX101 on SMPS Assy
and CN9502 on DMAIN Assy. If it is OK, replace that cable.
No
Check +5.6V line on DMAIN Assy
or replace DMAIN Assy.
No
Check connection betwwern CN602 on DMAIN Assy
and CN301 on CPU Assy.
No
Check IC303 on CPU Assy
or replace CPU Assy.
No
Check IC305 on CPU Assy
or replace CPU Assy.
VSX-830-K
2
3
No
Other trouble.
3
4
4