CONFIDENTIAL – DO NOT COPY
Page10-
10
File No. SG-0199
5
Check component 2
(Pb signal)
Î
C288,R213
Is there sync?
No
Is no blue color on screen?
No
Check U24
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
U10 fail
PDP DISPLAY NOTHING(Analog HD2 on PIP mode without Pb signal)
BLOCK 1
U24 fail
No
Check before U24’s circuit
1.C289,C290(AC coupled)
2.R211
3.R217(75ohm)
Yes
No
Input source fail
Check component 2
(Pr signal)
Î
C284,R210
Is there signal?
No
Is no red color on screen?
No
Check U24
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
U10 fail
PDP DISPLAY NOTHING(Analog HD2 on PIP mode without Pr signal)
BLOCK 1
U24 fail
No
Check before U24’s circuit
1.C276,C281(AC coupled)
2.R215
3.R218(75ohm)
Yes
No
Input source fail
Check U45
H sync output
Î
U45 pin4,R181
V sync output
Î
U45 pin8,R184
Is there signal?
No
Is picture on screen?
No
Check U45
H sync input
Î
U45 pin1,R185
V sync input
Î
U45 pin5,R187
Check U22’s signal output
R signal
Î
C238,R180,R169,U22.34
G signal
Î
C237,R177,R171,U22.31
B signal
Î
C235,R174,R176,U22.28
Yes
No
Check U22 input signal
R
Î
pin 2, C239;C241(AC coupled),R186,R172(75ohm)
G
Î
Pin 4,C234;C236(AC coupled),R166,R175(75ohm)
B
Î
Pin 6,C221;C224(AC coupled),R164,R173(75ohm)
PDP DISPLAY NOTHING(RGB)
BLOCK 1
Check U45
pin 14
Î
+3.3V
Yes
Check input source
No
U45 fail
Yes
Check U22
Input clamp voltage
Î
pin 1(+5V_V1)
Output clamp voltage
Î
pin 35(+5V)
VCC3
Î
pin 22,23(+5V)
Input_switch_select
Î
low (0V)
Yes
U22 fail
No
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...