Sony KD-75X7800F Service Manual page 49

4.4 NO PICTURE TUNER
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Digital
Analog
Refer Analog Tuning
Terrestrial/Cable
For TW, NA-ATSC(MX/UC),
JP and LA-ISDB-T
Refer Digital Tuning 1
Satellite
NG
Check Tuner power line
12V at JL2822 = 12V?
OK
For AEP_W, JP , PA_T2,
CH/HK, and LA-T2(COL)
Refer Digital Tuning 2
12V LNB Voltage Checking
49
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