Sony RB1G Service Manual page 354

Troubleshooting
3-3-6. No Sound : Scart Out Audio (For Europe model)
No Sound
SCART out only
BA2 / BKE / BKX / BLE
Power On checking
RB1 Main Board Power On Checking
No Checking Item
1 Check CL4515, CL4516.
(with audio signal input – Digital
RF mode)
2 Check IC4511 pin3
3 Check CL4511, CL4512
(with audio signal input – Digital
RF mode)
This is for Main SP got sound, but SCART out no sound.
Please check this condition in Digital RF mode
OK
Can see output audio signal
waveform
Vdc = 3.3V ± 0.3V
Can see input audio signal
waveform
If  NG
NG
Cannot see audio signal Go to checking
waveform 3-3-2: NO SOUND: Audio
(Additional : For Europe
models only)
No 3.3V supply
Cannot see audio signal Brownie IC (IC9001) NG
waveform
RB1G CHASSIS
W600A/ W603A/ W605A/ W607A/ W650A/ W651A/ W653A/
W654A/ W655A/ W656A/W657A/ W658A/ W670A/ W674A
Size B* Board Type
(Segment: LW)
OTHERS EUROPE
24" BLX BLE
32" BKX/BLX BKE/BLE
42" BKX/BLX BKE/BLE
50" BLX BLE
Note:
(AYU2/Ayu2L) –
IC9000
(Brownie)- IC9001
JP
BLJ
BKJ/BLJ
BKJ/BLJ
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