Sony KDL-40W900A Service Manual page 73

Troubleshooting
3-3-2. No Sound : Audio (Additional : For Europe models only)
#1
#1 #
Check the SCART
(use Digital RF (use Digital RF
Tuner input)
NG
Check the IC4511
NG
pin 3
VCC 3.3V
OK
Check the
NG
IC4511 pin 6
VEE-3.3V
OK OK
OK
No Problem No Problem
DC/DC converter is NG
See to section "3-1-2. No
POWER: Ayu2 Control
Check the solder
Of IC4511 CP & CN
(4&5pin) & C4511
OK OK
Solder NG
IC4511 NG
Check the
CNT pin7 (IC4511)
is HIGH?
OK
INR & INL
pin10 &1 (IC4511)
(at CL4512 and CL4511)
Signal is coming? Signal is coming?
OK
IC4511 NG
NG NG
NO
This is MUTE situation. This is MUTE situation
Check IC9000
No signal
IC9001 is NG
(*)
Size B* Board Type
OTHERS
40" BA2-S
N t Note:
46" BA2-S
(AYU2) – IC9000
(Brownie)- IC9001
55" BA2-S
RB1G CHASSIS
W900A/904A/905A
G* Board
Type
JP
BA2-W G1A
BA2-W G1A
BA2-W G1B
73