Operating instructions

47″LCD TV AOC L47H861
19
5. Repair Flow Chart
1. No Power (No LED indicator)
2. Can not start (LED indicator yellow)
NG
Check power cord and board interface
Plug in power cord and interface
OK
Check F901, BD901, C908
NG
Replace F901 or BD901 or C908
OK
Check IC902, Q901
Check D907, C921, C923,
IC905, IC906
NG
Replace IC902 or Q901
OK
Check T901
OK
Replace T901
Replace D907 or C921 or C923 or
IC905 or IC906
NG
NG
NG
Re
p
air the ke
y
board
OK
Check 5V SB
NG
Return to “1”
OK
Check PWR ON si
g
nal
NG
Check U411
,
X402
NG
Replace U409 or X402
Check I
2
C communication
OK
Check U401
,
U402
NG
Re
p
lace the main board
OK
OK
Check main board
p
ower su
pp
l
y
p
art
Check ke
y
board
Check I
2
C communication
OK
Check 3.3V SB
NG
Check U703