Pioneer VSX-1128-K Service Manual page 28

1
C
A
Check signals on BRI-1 Assy CN2107
pins 9 (SR), 11 (SL), 13 (SW),
15 (C), 17 (SBR), 19 (SBL) signals.
Check signals on BRI-1 Assy
CN2110 pins 5, 7, 9,11,13,15 signals.
(Pin assign is same as CN2107)
Input PCM to COAX in or OPT in,
set Auto Surround.
Is Front LR SP output sound is OK?
B
Repair IC1801 and its peripheral
circuit or replace the D-MAIN Assy.
Zone2 Audio No output
(Front LR is OK)
HDMI input or DIGITAL input
(COAX or OPT) -> output?
C
Analog in -> Pre-output?
Media Server or USB in
-> Zone2 Pre-output?
Speaker OUT?
D
Rec out no output
E
Tuner ->
(Other Analog OK)
BT in ->
(Other Analog OK)
USB in ->
F
E
28
1
2
D
Yes
Replace AUDIO Assy or
their peripheral circuit.
No
Repair IC2742, IC2704, IC2782
Yes
and their peripheral circuit
or replace the BRI-1 Assy.
No
Yes
Replace the D-MAIN Assy.
No
No
It is specification.
No
Replace IC2501 or
replace the AUDIO Assy.
Yes
No
Check the BRI-1 Assy CN2110
pins 21, 23 signals.
Yes
Check the BRI-1 Assy CN2107
pins 21, 23 signals.
Check Speaker Setup.
Zone2 ON/OFF with MULTI-ZONE
ON/OFF key
(CPU Assy CN302 pin 10 0 -> 5 V)
Same input Function?
It is specification.
Replace JACK50 (Tuner Pack)
on the MAIN Assy.
Replace the BT Assy.
Check CN9202 pin 5 3 V, pins 2, 3
Digital signal on the D-MAIN Assy.
Repair IC1801 (AK4588VQ) and its
peripheral circuit or replace the
D-MAIN Assy.
VSX-1128-K
2
3
Repair IC1802 (DAC for ZONE2)
No
and its peripheral circuit or
replace the D-MAIN Assy.
Yes
No
Repair IC2802 or
replace the BRI-1 Assy.
No
Set up Speaker Setting.
OK
Refer to"Relay Control Check flow"
and check Speaker Relay Operating.
No
Replace IC2501 or
replace the AUDIO Assy.
Yes
No
Replace IC809, IC1307 or
replace the FHDMI Assy.
Yes
3
4
4