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