Panasonic CY-VHD9401U Service Manual page 45

19.3. TFT Block
IC962
IR RECEIVER
To E-4C280a CN802
5V
5V
5V
5.2
C0FBBD000038
IC806
EEP ROM
IC905
D/A CONVERTER
3.3V
1.6
3.2
3.2
0
3.2 0
1.8
0
3.2
1.5
3.2 1.5
0 1.5
IC901
2.3 0
TFT CONTROLLER
0 0
0
C0HBA0000135
0
3.2
3V
3.2 0
2V/DIV, 50us/DIV
0 0
3V 3V
3.3 2V/DIV, 5us/DIV 0.5
3.3V 2V/DIV, 50us/DIV
0 3.3
3.3V 3.3V
To E-4C280a CN801
2V
1V/DIV , 0.2us/DIV
3.3V 3.3V
IC902
17V
PLL
B0BC3R4A0006
1.8
D901,902,903
B0BC3R4A0006
-13.1
1.3
IC931
1.3 1.3
VCOM
1.3 1.3 CONTROL
17.3
1.3
C0ABBB000069
B
G
17V
-13V
3.3V
3.3V
-13V
5V
E-4C279
IC702,Q704,706
DC-DC CONVERTER
9V 9V
Q703
9V +3.3V REG
6.9 YEANC3618T1 C0JBAZ000525
0 4.9
4.9 3.4
2.4 4.9 0
0
4.0 2.7
C0CBADE00034
2.5
0
2.7 2.2
IC701
+5V REG 2.3
0
9V
D708,709 -15.6
-13.8
YEADVDZS68BT
2SB0709AWL
-13.2
YEADRD10MZTZ
Q705,707
-13V REG
-13.2
2SD0601AHR
-12.5
-13.1
-13V -13V
3.3V
5V
17V
9V
4V
2V/DIV ,0.5us/DIV
3.3V
1V/DIV , 20us/DIV
Q801
B1AB00000279
+7.5V REG
B1HFCFD00001
IC802
0
17.4 OSDC
9V
7.3
7.5V
0.7
B
2.4
2.4
G
2.4
7.7
2.4
0.5V/DIV, 20us/DIV
0 0
2.4 1V/DIV , 10us/DIV IC801
R
VIDEO CHROMA & LCD I/F
2.4 2.6
2.4 2.8
3V
4.3 2.8
2V/DIV , 0.1ms/DIV
2.4
4.5
5V
4.6
2V/DIV, 20us/DIV
0.2V/DIV, 20us/DIV
0.5 2.9
3V
7V
4.1
2V/DIV, 0.1ms/DIV 2V/DIV , 20us/DIV
3V 0
2V/DIV, 50us/DIV
YEANC114EKTX
B1GBCFNA0010
Q802 Q803,804
4.9
BUFF
5.2
R
5V
45
Q780
IC780,Q781,782
POWER
INVERTER
CONTROL
6.0 CONTROL
6.0 9V
6.0 5V
B1GKCFGH0001
6.0
8.4
YEAM75W393FU
7.7
8.3
1.5
1.5 2.7
1.5 1.5
0 0
3.9
2.7
0
5V
17V
The following symbols are
shown on the schematic diagram.
3.3V
3.3V
5V 5V
7.5V 7.5V
9V
9V
-13V
-13V
17V
17V
VISUAL
B1ABCF000052
4.8
2V
7.7 4.2
1V/DIV , 0.2us/DIV
Q805
BUFF
5V
5V
9P
0.1
1.6
2.2
BUFF 4.9
5V
CY-VHD9401U
9V
Q783,784
ON/OFF
SWITCH
8.5
0
0
0
0
8.6
CY-VHD9401U TFT