CONFIDENTIAL – DO NOT COPY
Page10-
9
File No. SG-0199
4
Check component 2
(Pb signal)
Î
C260,R197
Is there sync?
No
Is no blue color on screen?
No
Check U23
outnput
Î
pin 28
Input
Î
pin 15
Input clamp voltage
Î
pin 5(+5V)
Output clamp voltage
Î
pin 29(+5V)
VCC3
Î
pin 22,23(+5V)
Input_switch_select
Î
high(+5V)
Use GProbe connect
from main to PC.
Does scaler detect the signal?
Yes
No
U13 fail
PDP DISPLAY NOTHING(Analog HD2 without Pb signal)
BLOCK 1
U23 fail
No
Check before U23’s circuit
1.C268,C269(AC coupled)
2.R211
3.R217(75ohm)
Yes
No
Input source fail
Check component 2
(Pr signal)
Î
C254,R192
Is there signal?
No
Is no red color on screen?
No
Check U23
outnput
Î
pin 34
Input
Î
pin 11
Input clamp voltage
Î
pin 1(+5V)
Output clamp voltage
Î
pin 35(+5V)
VCC3
Î
pin 22,23(+5V)
Input_switch_select
Î
high(+5V)
Use GProbe connect
from main to PC.
Does scaler detect the signal?
Yes
No
U13 fail
PDP DISPLAY NOTHING(Analog HD2 without Pr signal)
BLOCK 1
U23 fail
No
Check before U23’s circuit
1.C256,C261(AC coupled)
2.R215
3.R218(75ohm)
Yes
No
Input source fail
Check component 2
(Y signal)
Î
C287,R212
Is there sync?
No
Is picture on screen?
No
Check U24
outnput
Î
pin 31
Input
Î
pin 13
Input clamp voltage
Î
pin 3(+5V)
Output clamp voltage
Î
pin 32(+5V)
VCC3
Î
pin 22,23(+5V)
Input_switch_select
Î
high(+5V)
Use GProbe connect
from main to PC.
Does scaler detect the signal?
Yes
No
U10 fail
PDP DISPLAY NOTHING(Analog HD2 on PIP mode without Y signal)
BLOCK 1
U24 fail
No
Check before U24’s circuit
1.C282,C285(AC coupled)
2.R209
3.R216(75ohm)
Yes
No
Input source fail
LCD
LCD
LCD
Содержание Gallevia GV46LHDTV10A
Страница 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...
Страница 54: ...CONFIDENTIAL DO NOT COPY Page 9 3 File No SG 0199 3 3V_ADC_HUD 1 8V_ADC_HUD...
Страница 55: ...CONFIDENTIAL DO NOT COPY Page 9 4 File No SG 0199 5 FLI8532 U13 3 3V_I O 1 8V_ADC...
Страница 56: ...CONFIDENTIAL DO NOT COPY Page 9 5 File No SG 0199 2 5V_DDR 1 8V_CORE...
Страница 57: ...CONFIDENTIAL DO NOT COPY Page 9 6 File No SG 0199 6 NT5DS16M16CS 5T U16 U17 7 Am29LV320DT90 ED XU1...
Страница 58: ...CONFIDENTIAL DO NOT COPY Page 9 7 File No SG 0199 8 LM2660 5V_N of the U29...
Страница 61: ...CONFIDENTIAL DO NOT COPY Page 9 10 File No SG 0199 4 MSP4450G crystal clock pin 55 of the U32...
Страница 64: ...CONFIDENTIAL DO NOT COPY Page 9 13 File No SG 0199 V sync...
Страница 65: ...CONFIDENTIAL DO NOT COPY Page 9 14 File No SG 0199 2 SiI9011CLU U35 and U42 CLK BHS sync...
Страница 66: ...CONFIDENTIAL DO NOT COPY Page 9 15 File No SG 0199 BVS sync...
Страница 67: ...CONFIDENTIAL DO NOT COPY Page 9 16 File No SG 0199...
Страница 68: ...CONFIDENTIAL DO NOT COPY Page 9 17 File No SG 0199 ATSC Board 1 Voltage Measurement 1 12V 12V C4 2 5V 5V C239...
Страница 69: ...CONFIDENTIAL DO NOT COPY Page 9 18 File No SG 0199 3 3 3V DV33 C11 4 2 5V DV25 C185...
Страница 70: ...CONFIDENTIAL DO NOT COPY Page 9 19 File No SG 0199 5 1 8V DV18 C64 6 1 25V 1V25_DDR C148...
Страница 71: ...CONFIDENTIAL DO NOT COPY Page 9 20 File No SG 0199 7 1 2V DV12 C26...
Страница 76: ...CONFIDENTIAL DO NOT COPY Page10 3 File No SG 0199 DISPLAY BOARD IR BOARD...
Страница 77: ...CONFIDENTIAL DO NOT COPY Page10 4 File No SG 0199 ATSC BOARD AUDIO BOARD...
Страница 95: ...CONFIDENTIAL DO NOT COPY Page10 22 File No SG 0199 TROUBLE OF THE DTV...