Read Sony XBR-43X830C / XBR-49X830C / XBR-49X835C / XBR-49X837C / XBR-49X839C Service Manual online
XBR-43X830C, 49X830C, 835C, 837C, 839C
112
TROUBLE SHOOTING
3-5-8. FOR 12V LNB Voltage Checking: @ AEP_W and JP_SKP
12V LNB Voltage Checking
NG
OK
OK
NG
Change the fuse
Check fuse F6000
Check Tuner power line
12V at JL9012 = 12V?
Check P_ON_LNB signal line
at R9167 = 3.3V?
MOSFET Q9019
broken
OK
NG
Check harness between
B-Board and G-board
OK
NG
Harness broken
Please refer G-board
troubleshooting
Please refer DDCON
troubleshooting
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