Philips TCM2.0E, Руководство по обслуживанию

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Service Modes, Error Codes, and Fault Finding EN 15 TCM2.0E LA 5.
Figure 5-11 No Picture, no sound, no backlight, fuse broken (26" sets)
Figure 5-12 No Picture, Backlight & Sound OK
No Picture, no s ound, no Black li g ht, Fu s e Broken
pin4~5 i s 5V &
pin7~8 i s 12V of
U505 OK?
Pin 8~11 of P804 i s
12V, OK?
Check Pin 4 Of
UM01 i s 3 . 3 v
Check
LQFP jointin g of
U20 3
NO NO
NO
YE S YE S
YE S
Pin2~ 3 of P804 i s
5v&Pin 1 i s 5v,OK?
Check
X200,C221,C222,C
2
3 ,L214 & IIC Bu s
YE S
Check jointin g of
U204,R271~R288
,R248~R260.
YE S
NO
Check s ub P S U
for s tandby
Check Main
P S U
YE S
I s
U800~U808&U2
01 OK?
Replace the
bad one of
u800~u808&U2
01
I_17950_010.ep s
0 8 050 8
No Picture, Black li g ht & S ound OK
Check the
output volta g e
of Q20 3 . i s it
OK?
Check
waveform of
L200~L209 i s
OK?
Check the
volta
g e of
C of Q204.
Ye s
No
Ye s
I s
Pin220,229,2 3 8
of U20 3 s horted
to earth?
Replace Q20 3
Ye s
No
check the
cable to panel
check Pin
221~228&Pin
2 3 0~242 of U20 3
No
I_17950_011.ep s
0 8 050 8