Sony BRAVIA KDL-55W900A, Service Manual

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RB1G
CHASSIS
W900A/904A/905A
Troubleshooting
3-5. No Picture
3-5-9. NO PICTURE: @ Tuner AEP-S2 / AEP-T2C2S2 (SAT part)
No Picture
of SAT
Sound is normal ?
Check IC9001(Brownie)/
IC9001(Ayu2)
Yes
Confirm ANT connection
OK
No sound
Connect ANT Cable
NG
Error free
Confirm BER of digital RF Check Brownie and
correctly
NG
Confirm BER of digital RF
By Service mode
Check Brownie and
M’t condition in TS line
Confirm Power supply
for IC2031
DDEM1.2V / DDEM2.5V/DDEM3.3V
Check Power supply
circuit
NG
A2.5V
Confirm IC2031 control line
I2CB_SCL / I2CB_SDA
SAT RESET / SAT OSC EN
OK
Check M’t condition
for control line
NG
S _ S / S _OSC_
OK
Check M’t condition
SAT RF input circuit
Confirm RF Level and AGC
of Digital RF by Service mode
AGC = high
Si B* B d T G* B d
Check IC2031
Luxor
AGC = Low
Note:
Size B* Board Type G* Board
Type
OTHERS JP
40” BA2-S BA2-W G1A
46” BA2 S BA2 W G1A
166
Note:
(AYU2) – IC9000
(Brownie)- IC9001
46” BA2-S BA2-W G1A
55” BA2-S BA2-W G1B