Read LG 32LB9D (CHASSIS:LB73B) Service Manual online
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1/2
X260
TP A
Comp 1/2
RGB
CVBS
TP C
TP B / 656
AT/NT/
TUNER
TP
MST
3367
HS,VS
DVI
HS,VS
YCbCr 2
YCbCr or RGB
FRC9445H
RGB
CVBS
YCbCr 1
DVO
Y/C1, Y/C2
Y/C1, Y/C2
AV1/2
AV1/2
HDMI
1/2/3
TMDS341A
1 : _Check HDCP Error
_Retr y po wer off and on (TV or S TB/DVD
)
_Check MST3361(IC402) HDCP IIC line (#69,#70)
2 : _Check EDID Download
(RX0C-,RX0C+) :
Frequenc y : Different acc ordi ng to
form at !!
form at !!
4 : _Check MST3361(IC402) Outp uts
SCL :
SDA :
3 : _ MST3361(IC402) inputs
(RX1C-,RX1C+) :
(Vsync) :
(DE) :
(Clk) :
(Hsync)
59.94Hz
Frequenc y : Different acc ordi ng to
form at !!
form at !!
(Data) :
5 : _Check X 260 (IC101) Inputs
_Sign al sh ape is same (abo ve)
Sno w noi se (Whit e dot) ?
Power o ff and on
(TV or STB/DVD )
Vid eo is norm al & No Sound ?
Check HDCP Power Pin (IC404),
MST3361(IC402) IIC(#69,#70)
Check M ST3361(IC402) inpu ts
Power, Os c
#25,#26(RX1C-,RX1C+),
#14,#15(RX0C-,RX0C+)
Re-downloa d
EDID(IC406/407/408)
Check M ST3361(IC402) Outputs
V-out (#99) , H-ou t (#98) ,
Clock ( #96) , Data
1
2
3
4
N
Y
N
Y
Y
Check X260 ( IC101) Inpu ts
MST3361_HS(#T6) ,
MST3361_VS(#T5) , Clock ( #P3) ,
Data (30Bit) , DE(#U6)
5
(6) HDMI / DVI
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