64
4.4 NO PICTURE: @ TUNER
TV Business Division
64
+12V_LNB Voltage Checking
Please confirm Power
Sequence u-com
NG
OK
OK
NG
Change the fuse
Check fuse F2801
Check LNB power line
+12V_MAIN at R495 = 12V?
Check P_ON_HL signal line
at CL810(R826) = 3.3V?
MOSFET
Q408/Q409 broken
OK
FOR 12V LNB Voltage Checking: @ AEP and JP
NG
Check harness between
B-Board and G-board
OK
NG
Harness broken
Please refer G-board
troubleshooting
Check +12V_Main at CN800
(JL801/JL810)
OK
NG
4.4 NO PICTURE: @ TUNER
SYS SET
2019/04/19 01:55:00 (GMT+09:00)