Tuner – Troubleshooting Flow - Sony KLV-24R402A Service Manual

Troubleshooting
3-9. Tuner – Troubleshooting flow
Analog RF input no picture
Check RF source cable
and antenna, OK?
Check JL1001 =
Raster, OK?
Tuning, OK?
NG
,
OK
NG
+3.3V?
OK
NG
OK
NG
OK
A
Change RF cable and antenna
Change BB
Check LVDS
connection
between BB b t
board, OK?
Change BB g
R402/ R407/ R422/ R435/ R452/ R457/ R472/ R488
NG
harness
BB
Reconnect LVDS cable
OK
or change new LVDS or change new LVDS
cable
ITC2 CHASSIS
50