Pioneer VSX-5231 Service Manual page 22

1
A D
Tuner → (Other Analog OK)
B
USB in →
HDMI in on rear →
C
No Picture
This is just for general reference and does not including every single case.
D
No Picture
Composite in → No Composite out
Rear HDMI in → No HDMI out
E
F
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2
Replace PACK601 (Tuner Pack)
on MAIN Assy.
Is the voltage 5 V?
(D-MAIN Assy CP2006 pin 1,
pin 3, 4 digital signal)
Yes
Repair IC2011 (AK4588) and its
peripheral circuit or replace D-MAIN Assy.
A sound not coming out only
in HDMI IN1 to IN4?
Yes
Repaier or Replace D-MAIN Assy.
Check IC1200 on MAIN Assy or
replace MAIN Assy.
Replace D-MAIN Assy.
Check IC1203, XTAL1200, XTAL1201,
Q1207, Q1208, Q1209 on MAIN Assy
No OSD
or replace MAIN Assy.
VSX-523-K
2
manuals search engine
3
E
Is Front L, R speaker output
No Repair IC2011 (AK4588) and its
sound OK?
Input PCM to COAX in or
OPT in, set Auto Surround
Yes
Replace D-MAIN Assy.
No Replace IC2021, IC2024 on D-MAIN
Assy or replace FUSB Assy.
No Repair IC2011 (AK4588) and its
peripheral circuit or replace D-MAIN Assy.
3
4
peripheral circuit or replace D-MAIN Assy.
4