CONFIDENTIAL – DO NOT COPY
Page10-
6
File No. SG-0199
1
PDP DISPLAY NOTHING(Analog HD1/AC on/off default)
Power LED is lighting?
Start
No
Yes
Check AC power cord
No
Press Meun or Info.
Is there any OSD’s logo
Power LED is lighting?
No
Check U3.4
Î
3.3V
No
D10,D11 LED is lighting?
Check internal cable?
1.LVDS cable.
Panel power
fail
U3 fail
Check U8
Î
1.8V
Check U9
Î
2.5V
No
U8 fail
No
U9 fail
If power_off
Î
high
U2,U5
Î
ON
Check +3.3V_SW
,+5V_SW,+12V_SW
(pin 5,6 and pin 7,8)
No
U2,U5 fail
Check Fuse open?
(F2,F3,F4)
Fuse fail
Yes
No
Yes
U13 fail
No
Yes
Check input source
Check internal cable?
1.CN1’s cable
2.CN3’s cable
No
Check main board CN3 pin 4
Î
s5V
Check CN3 pin 3
Î
RLY_ON(high)
Check CN3 pin 2
Î
VS_ON(high)
Yse
Check CN1
Î
pin 1,2,3 = +5V
pin 7,8 = +12V
No
No
Yes
No
Power LED is lighting?
No
Check W1 pin 27 is high?
(Display_ON)
No
Remove R87.
Check U13 pin AD14.
Is AD14 high?
U13 fail
No
Yes
Yes
Yes
Check component 1
(Y signal)
Î
C252
Is there sync?
No
Is picture on screen?
Yes
Block 1
No
Trace componect 1 from
Input To U13 circuit
Check R190,R191
Use GProbe connect
from main to PC.
Does scaler detect the signal?
Yes
No
U13 fail
PDP DISPLAY NOTHING(Analog HD1 without Y signal)
LCD
LCD
Summary of Contents for Gallevia GV46LHDTV10A
Page 53: ...CONFIDENTIAL DO NOT COPY Page 9 2 File No SG 0199 3 PDP_ 5Vsb CN3 4 4 FLI8125 U10 3 3V_I O_HUD...
Page 54: ...CONFIDENTIAL DO NOT COPY Page 9 3 File No SG 0199 3 3V_ADC_HUD 1 8V_ADC_HUD...
Page 55: ...CONFIDENTIAL DO NOT COPY Page 9 4 File No SG 0199 5 FLI8532 U13 3 3V_I O 1 8V_ADC...
Page 56: ...CONFIDENTIAL DO NOT COPY Page 9 5 File No SG 0199 2 5V_DDR 1 8V_CORE...
Page 58: ...CONFIDENTIAL DO NOT COPY Page 9 7 File No SG 0199 8 LM2660 5V_N of the U29...
Page 61: ...CONFIDENTIAL DO NOT COPY Page 9 10 File No SG 0199 4 MSP4450G crystal clock pin 55 of the U32...
Page 64: ...CONFIDENTIAL DO NOT COPY Page 9 13 File No SG 0199 V sync...
Page 65: ...CONFIDENTIAL DO NOT COPY Page 9 14 File No SG 0199 2 SiI9011CLU U35 and U42 CLK BHS sync...
Page 66: ...CONFIDENTIAL DO NOT COPY Page 9 15 File No SG 0199 BVS sync...
Page 67: ...CONFIDENTIAL DO NOT COPY Page 9 16 File No SG 0199...
Page 69: ...CONFIDENTIAL DO NOT COPY Page 9 18 File No SG 0199 3 3 3V DV33 C11 4 2 5V DV25 C185...
Page 70: ...CONFIDENTIAL DO NOT COPY Page 9 19 File No SG 0199 5 1 8V DV18 C64 6 1 25V 1V25_DDR C148...
Page 71: ...CONFIDENTIAL DO NOT COPY Page 9 20 File No SG 0199 7 1 2V DV12 C26...
Page 76: ...CONFIDENTIAL DO NOT COPY Page10 3 File No SG 0199 DISPLAY BOARD IR BOARD...
Page 77: ...CONFIDENTIAL DO NOT COPY Page10 4 File No SG 0199 ATSC BOARD AUDIO BOARD...
Page 95: ...CONFIDENTIAL DO NOT COPY Page10 22 File No SG 0199 TROUBLE OF THE DTV...