No Sound : Audio (For Aep Models Only) Tus (He-L,Hm,He-H,Xm-L) - Sony KJ-32W7 C Series Service Manual

Troubleshooting

3-3-2. No Sound : Audio (For AEP models only) TUS (HE-L,HM,HE-H,XM-L)

#1
Check the SCART
(use Digital RF
Tuner input)
NG
Check the IC3101 pin 3
VCC 3.3V
OK
Check the
IC3101 pin 6
VEE-3.3V
OK
#1
OK
No Problem
NG
DC/DC converter is NG
See to section "1.3. No
POWER: - DDCON/LDO.
Check the solder
NG
Of IC3101 CP & CN
(4&5pin) & C4511
OK
IC3101 NG
Check the
CNT pin7 (IC3101)
is HIGH?
OK
INR & INL
pin10 &1 (IC3101)
(at CL3100 and CL3105)
Signal is coming?
OK
IC3101 NG
NG
Solder NG
NO
This is MUTE situation.
Check IC9000
No signal
IC9001 is NG
Note:
(AYU2/Ayu2L) – IC9000
(Brownie)- IC9001
53