- No Sound: Hp/Lineout Only For Bax-L (Hel, Heh, Hm) Board Only - Sony KDL-32W700B Service Manual

Troubleshooting
RB2G CHASSIS
W700B/ W800B

2.3-6 - NO SOUND: HP/LINEOUT ONLY FOR BAX-L (HEL, HEH, HM) BOARD ONLY

2 3 7. No Sound: HP / Lineout Only for BAX L (HEL,HEH,HM) board only 2-3-7 No Sound: HP / Lineout Only for BAX-L (HEL HEH HM) board only
No Sound
HP / Lineout only
BAX-LPower On checking
RB1 Main Board Power On Checking
No Checking Item
1 Insert HP Jack. Check R4508
2 Check IC4501 Pin 5
(X AUDIO MUTE SPHPLO) ( _ _
3 Check CL4505, CL4506.
(with audio signal input)
4 Check IC4501 pin 9
5 5 Check CL4501, CL4502 Check CL4501 CL4502
(with audio signal input)
Chassis: RB2G, HE-L
This is for Main SP got sound, but HP / Lineout no sound
OK
Vdc = 3.3V ± 0.3V
Vdc = 3.3V ± 0.3V
_ )
Can see audio signal
waveform
Vdc = 3.3V ± 0.3V
Can see audio signal Can see audio signal
waveform
NG If  NG
Vdc = 0V or < 1V Check HP_DET line
(R7020 – for BAX-L)
got short to GND? If short to GND got short to GND? If short to GND
replace board.
Vdc = 0V or < 1V Check X_AUDIO_ MUTE_ SPHLO
( (Pin 5) short to GND. If short to GND
replace board.
Cannot see audio signal Go to below item No. 4 for checking
waveform
No 3.3V supply. Please refer
item 3-3-1. No POWER DC /
.
DC Converter Check
Cannot see audio signal Cannot see audio signal Brownie IC (IC9001) NG Brownie IC (IC9001) NG
waveform
Chassis: RB2G, HE-L
Note:
(AYU2/Ayu2L) –
IC9000
(Brownie)- IC9001
)
68