LG 32LV2400 / LC320EXG-RDA2-KR1 Service Manual ▷ View online
CONFIDENTIAL – DO NOT COPY
Page 9-2
File No. SG-0000036
Yes
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Yes
COMPOSITE
IS
NOT
DISPLAY
CORRECTLY
Start
Input signal good?
1. Check video
2. Check DVD player
P2 input correct?
1.Check signal between P2
2.Check power +19V
LVDS output correct?
1. Check U15 :DV33 & VCCK &
AV33 & AV125 & DDRV
2. Check Y1 is OK?
1. Check TCN1 & TCN2 Connect is good?
2. Is panel working ok?
END
U15 output correct?
1. Check mini-LVDS cable
2. Check U15 clock (54MHz)
3. Check LVDS signal
CONFIDENTIAL – DO NOT COPY
Page 9-3
File No. SG-0000036
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Yes
Yes
Yes
Yes
COMPONENT
IS
NOT
DISPLAY
CORRECTLY
Start
Input signal good?
1.Check video
2.Check host’s setting
P2 input correct?
1.Check signal between P2
2.Check power +19V
U15 input correct?
1.Check signal between U15&P2
2.Check U15 Clock (54MHZ)
3.Check U15 :DV33&VCCK&AV33&AV125
LVDS output correct ?
1.Check U15
2. Check T-con power
3.Check mini-LVDS cable
1.Is TCN1 & TCN2 connected good?
2.Is panel working ok?
END
CONFIDENTIAL – DO NOT COPY
Page 9-4
File No. SG-0000036
Yes
Yes
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Yes
(
HDMI
)
IS
NOT
DISPLAY
CORRECTLY
Input signal good?
Start
1.Check video
2.Check host’s setting
U46 no data out ?
1.Check U46 power
2.Check between signal U15
3.Check U15 clock 54MHZ
1.Is TCN1& TCN2 connected good?
2.Is panel working ok?
END
CONFIDENTIAL – DO NOT COPY
Page 9-5
File No. SG-0000036
Yes
N0
The voltage is VCCK while
power switch on
1. Check U15 OPWRSB Pin
Yes
Yes
Yes
Yes
Yes
Yes
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Yes
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TROUBLE
OF
DC-DC
CONVERTER
Start
J7 PIN1,2,3
The voltage is +19V
1. Check power board
2. Check power cable
connection J7
CE15
CE10
The voltage is about +3.3V
CE16.
The voltage is about +3.3V
U8 pin2
The voltage is about +1.25V
FB14
The voltage is about +3.3V
U52 pin2
The voltage is about +1.8V
END
U10 pin3
The voltage is about +5V
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