Sony RB1G - Slide Number 346

RB1G CHASSIS
W600A/ W603A/ W605A/ W607A/ W650A/ W651A/ W653A/
W654A/ W655A/ W656A/W657A/ W658A/ W670A/ W674A
No Sound
HP / Lineout only
BA2 / BM / BKE / BKX / BKJ
BLE / BLX / BLJ Power On
checking
This is for Main SP got sound, but HP / Lineout no sound
346
3-3-5. No Sound: HP / Lineout Only
Troubleshooting
No Checking Item OK NG If  NG
1 Insert HP Jack. Check R4508 Vdc = 3.3V ± 0.3V Vdc = 0V or < 1V Check HP_DET line
(R8113 – for BA2 and BM)
(R8124 – for BKE ,BKX and BKJ)
(R7018 – for BLE, BLX and BLJ)
got short to GND? If short to GND
replace board.
2 Check IC4501 Pin 5
(X_AUDIO_MUTE_ SPHPLO)
Vdc = 3.3V ± 0.3V Vdc = 0V or < 1V Check X_AUDIO_ MUTE1_ SPHLO
(Pin 5) short to GND. If short to GND
replace board.
3 Check CL4505, CL4506.
(with audio signal input)
Can see audio signal
waveform
Cannot see audio signal
waveform
Go to below item No. 4 for checking
4 Check IC4501 pin 9 Vdc = 3.3V ± 0.3V No 3.3V supply. Please refer
item 3-3-1. No POWER DC /
DC Converter Check
.
5 Check CL4501, CL4502
(with audio signal input)
Can see audio signal
waveform
Cannot see audio signal
waveform
Brownie IC (IC9001) NG
RB1 Main Board Power On Checking
Note:
(AYU2/Ayu2L) –
IC9000
(Brownie)- IC9001
Size B* Board Type
(Segment: LW)
OTHERS EUROPE JP
24” BLX BLE BLJ
32” BKX/BLX BKE/BLE BKJ/BLJ
42” BKX/BLX BKE/BLE BKJ/BLJ
50” BLX BLE -