Read Panasonic KX-HDV430 Service Manual online
7
KX-HDV430 Series
4.2.
Circuit Operations
4.2.1.
Color TFT LCD display with touch panel
LCD display datas are output from LCD I/F of IC601 to Color TFT LCD display module.
LCD touch panel datas are output from Touch Panel I/F of IC101 to Color TFT LCD display module.
HDV430 has interface of 4-Wire Resistive Touch Panel(pin37,38,39,40).
This color TFT LCD is powered by +3.3V (CN1 pin4 )and VLED+- (CN1 pin 1,2)voltage.
VLED+-(LED backlight voltage ) is powered by IC306 block(constant current circuit) with PWM control.
The PWM (Pulse Width Modulation) signal is output from IC101 (pin U13) pin and the brightness is changed according to its duty
ratio.
LCD touch panel datas are output from Touch Panel I/F of IC101 to Color TFT LCD display module.
HDV430 has interface of 4-Wire Resistive Touch Panel(pin37,38,39,40).
This color TFT LCD is powered by +3.3V (CN1 pin4 )and VLED+- (CN1 pin 1,2)voltage.
VLED+-(LED backlight voltage ) is powered by IC306 block(constant current circuit) with PWM control.
The PWM (Pulse Width Modulation) signal is output from IC101 (pin U13) pin and the brightness is changed according to its duty
ratio.
IC101
LCD_TPX1
LCD_TPX2
LCD_TPY1
LCD_TPY2
LCD_TPX2
LCD_TPY1
LCD_TPY2
R431
1
2
3
4
5
6
7
8
TPX1
TPX2
TPY1
TPY2
TPX2
TPY1
TPY2
T17
P13
R18
T18
P13
R18
T18
U13
PWM0
LCD_PWM
DCIN
C375
C373
R339
IC306
1
SW
2
GND
4
CTRL
5
OV
3
FB
6
VIN
D303
C376
R338
LCD_PWM 004:6C
L307
DG
G
D
G
D
DG
DG
C389
VLED+
006:8D
VLED-
006:8D
R336
C374
R349
R340
12V
LCD_R[6]
LCD_R[3]
LCD_G[7]
LCD_G[6]
LCD_G[5]
LCD_G[6]
LCD_G[5]
LCD_B[2]
LCD_R[1]
LCD_R[0]
LCD_R[0]
LCD_B[1]
LCD_B[0]
LCD_B[0]
LCD_R[4]
LCD_R[5]
LCD_R[7]
LCD_R[2]
LCD_B[3]
LCD_B[4]
LCD_B[5]
LCD_B[6]
LCD_B[7]
LCD_G[2]
LCD_G[3]
LCD_G[4]
LCD_G[1]
LCD_G[0]
LCD_G[0]
LCD_EN
IC601
IC601
D5
GIO49
A5
GIO48
C6
GIO47
E6
GIO46
B6
GIO45
E7
GIO44
T6
GIO43
R6
GIO42
W5
GIO41
U5
GIO40
R5
GIO39
V5
GIO38
T5
GIO37
W4
GIO36
W3
GIO35
V4
GIO34
V3
GIO33
W2
GIO32
U4
GIO31
T4
GIO30
U2
GIO29
V1
GIO28
T2
GIO27
U1
GIO26
T1
*SPI0_SCS0
T3
SPI0_SCLK
V2
SPI0_SOMI
R2
SPI0_SIMO
F3
I2C_SDA
F1
I2C_SCL
E3
GIO19
E2
GIO18
E4
GIO17
E1
GIO16
D2
GIO15
D1
GIO14
D3
GIO13
C1
GIO12
B1
GIO11
B2
GIO10
C2
GIO9
A2
GIO8
A3
GIO7
B3
GIO6
B4
GIO5
A4
GIO4
C5
GIO3
C4
GIO2
D6
GIO1
A15
CIN7
C15
CIN6
B16
CIN5
CIN5
A16
CIN4
A17
CIN3
C16
CIN2
A18
CIN1
B17
CIN0
C12
YIN7
A13
YIN6
B13
YIN5
D12
YIN4
A14
YIN3/GIO99
B15
YIN2/GIO98
D14
YIN1/GIO97
D15
YIN0/GIO96
C14
HD/GIO95
B14
VD/GIO94
E13
CLKOUT0
D13
PCLK
G16
YOUT7/R7
G19
YOUT6/R6
F15
YOUT5/R5
F18
YOUT4/R4
F16
YOUT3/R3
F19
YOUT2/G7
F17
YOUT1/G6
E16
YOUT0/G5
G15
HSYNC/GIO84
G18
VSYNC/GIO83
C19
LCD_OE/GIO82
B19
EXTCLK
B18
VCLK/GIO79
E18
GIO92/COUT7/G4
E19
GIO91/COUT6/G3
E15
GIO90/COUT5/G2
E17
GIO89/COUT4/B7
D16
GIO88/COUT3/B6
D19
GIO87/COUT2/B5
D18
GIO86/COUT1/B4
D17
GIO85/COUT0/B3
C18
GIO81/R2
D11
VREF
A11
IREF
B11
IDACOUT
B10
VFB
A10
TVOUT
B12
COMPY
A12
COMPPB
R609
R610
R611
R610
R611
R612
DG
C661
LCD_R[7]
LCD_R[6]
LCD_R[5]
LCD_R[4]
LCD_R[3]
LCD_G[7]
LCD_G[6]
LCD_G[5]
LCD_R[6]
LCD_R[5]
LCD_R[4]
LCD_R[3]
LCD_G[7]
LCD_G[6]
LCD_G[5]
R601
LCD_HSYNC
LCD_VSYNC
LCD_VSYNC
LCD_DE
LCD_PCLK
LCD_B[2]
LCD_G[4]
LCD_G[3]
LCD_G[2]
LCD_B[7]
LCD_B[6]
LCD_B[5]
LCD_B[4]
LCD_B[3]
LCD_R[2]
LCD_B[2]
LCD_G[4]
LCD_G[3]
LCD_G[2]
LCD_B[7]
LCD_B[6]
LCD_B[5]
LCD_B[4]
LCD_B[3]
LCD_R[2]
CM_SDA
CM_SCL
CM_SCL
LCD_R[1]
LCD_R[0]
LCD_G[1]
LCD_G[0]
LCD_R[0]
LCD_G[1]
LCD_G[0]
LCD_B[1]
LCD_B[0]
LCD_B[0]
V_SPI_CS
V_SPI_CLK
V_SPI_DO
V_SPI_DI
V_SPI_DI
EMAC_TXD1
EMAC_TX_CLK
EMAC_TXD0
EMAC_TXD3
EMAC_TX_EN
EMAC_RXD2
EMAC_TXD2
EMAC_RXD1
EMAC_RXD3
EMAC_RXD0
EMAC_RX_CLK
EMAC_RX_ER
EMAC_RX_DV
LCD_EN
C648
C649
C650
C651
C652
C656
C657
C658
C659
C653
C654
C655
L602
D601
D602
DG
Video Module PCB
LCD_R[4]
LCD_R[5]
LCD_R[6]
LCD_R[3]
LCD_R[7]
LCD_R[2]
LCD_R[1]
LCD_R[0]
LCD_R[1]
LCD_R[0]
LCD_G[3]
LCD_G[7]
LCD_G[5]
LCD_G[6]
LCD_G[4]
LCD_G[0]
LCD_G[2]
LCD_G[1]
LCD_G[1]
LCD_B[3]
LCD_B[7]
LCD_B[5]
LCD_B[6]
LCD_B[4]
LCD_B[0]
LCD_B[2]
LCD_B[1]
LCD_B[1]
LCD_R[5]
LCD_R[2]
LCD_R[4]
LCD_R[6]
LCD_R[3]
R623
1
2
3
4
5
6
7
8
R624
1
2
3
4
5
6
7
8
LCD_R[7]
LCD_R[1]
LCD_R[0]
LCD_R[0]
R629
1
2
3
4
5
6
7
8
LCD_G[4]
R630
1
2
3
4
5
6
7
8
LCD_G[2]
LCD_G[0]
LCD_G[3]
LCD_G[6]
LCD_G[1]
LCD_G[7]
LCD_G[5]
R621
1
2
3
4
5
6
7
8
LCD_B[4]
R679
1
2
3
4
5
6
7
8
LCD_B[2]
LCD_B[0]
LCD_B[3]
LCD_B[6]
LCD_B[1]
LCD_B[7]
LCD_B[5]
LCD_EN
LCD_DE
LCD_DE
LCD_HSYNK
LCD_VSYNK
LCD_VSYNK
LCD_PCLK
R663
R627
R625
R626
R628
R627
R625
R626
R628
R6025
R6026
R6027
R6028
R6029
R6026
R6027
R6028
R6029
LCD_EN
LCD_DE
LCD_HSYNC
LCD_VSYNC
LCD_VSYNC
LCD_PCLK
LCD_PCLK
LCD_DE
LCD_VSYNC
LCD_HSYNC
LCD_EN
LCD_B[7]
LCD_B[6]
LCD_B[5]
LCD_B[4]
LCD_B[3]
LCD_B[2]
LCD_B[1]
LCD_B[0]
LCD_G[7]
LCD_G[6]
LCD_G[5]
LCD_G[4]
LCD_G[3]
LCD_G[2]
LCD_G[1]
LCD_G[0]
LCD_R[7]
LCD_R[6]
LCD_R[5]
LCD_R[4]
LCD_R[3]
LCD_R[2]
LCD_R[1]
LCD_R[0]
C192
C193
C190
L102
LCD_TPX1
LCD_TPY1
LCD_TPX2
DG
LCD_TPY2
DG
C189
3.3V
CN1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
C181
VLED+
003:6D
VLED-
003:6D
DG
C191
DG
C641
C640
C639
C638
C637
C636
C635
C634
DG
DG
C633
C632
C631
C630
C629
C628
C627
C626
C625
C624
C623
C622
C621
C620
C619
C618
C617
C616
C615
C614
C613
C612
C611
C610
To Main LCD
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