Philips PET836 Service Manual page 34

5
CIRCUIT DIAGRAM- TFT BOARD
D
TJ1 TJ1
35PIN 0.5MM DOWN 35PIN 0.5MM DOWN
+5V
1
Vcc
2
Vcc
3
GND
4
GND
5
GND
IR
6
IR
7
GND
C R
8
VR
9
GND
G
10
VG
11
GND
B
12
VB
13
GND
CLK1
14
CLK1
CLK2
15
CLK2
CLK3
16
CLK3
17
GND
STH1
18
STH1
STH2
19
STH2
OEH
20
OEH
21
GND
VCOM
22
VCOM
23
GND
OEV
24
DEV1
CPV
25
CPV
STV2
26
STV2
STV1
27
STV1
ADKEY1
28
ADKEY1
VGH
29
VGH
VGL
30
VGL
31
GND
VLCDPW
32
LCDSW
LED_BRIGHTNESS
33
PWM
CHARGE_LED
34
CHA_LED
35
ADKEY
B
To Main Board
+5V
TR20 TR20
4.7K 4.7K
IR
A
5
4
TJ2 TJ2
VCC3.3V
26
VEE
25
B
24
G
23
R
22
21
VDD
20
CLK1
19
CLK2
18
CLK3
17
STH1
16
STH2
15
OEH
14
MOD
13
R/L
12
VCOM
11
VCOM
10
OEV
9
U/D
8
CPV
7
STV2
6
STV1
5
VGH
4
VGL
3
2
1
26PIN 0.5MM DOWN 26PIN 0.5MM DOWN
VCOMDC=1.3V
VCOMAV=7.0V
To Analog Panel
TU3 TU3
IR SENSOR IR SENSOR
TR23 TR23
NC/4K7 NC/4K7
TR21 TR21 100R 100R +5V TR25 TR25
4K7 4K7
TE7 TE7 TC7 TC7
0.1uF 0.1uF
10uF/10V 10uF/10V
4
3
+5V
+ +
TE4 TE4 TC3 TC3
10uF/10V 10uF/10V 0.1uF 0.1uF
TR8 TR8 1K 1K
26
VLCDPW
8 VLCDPW
25
24
23
22
21
20
8
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
TR19 1K TR19 1K
VLCDPW
VCC5V CHARGE_LED
+5V
+5V
TR16 TR16
TR22 TR22 1K 1K
TR24 TR24 4K7 4K7
4K7 4K7
MOD
R/L
TD2 TD2
U/D POWER ON
TR26 TR26
TR27 TR27
4K7/NC 4K7/NC NC NC
3
2
TD1 TD1
TL1 22uH/CD75 TL1 22uH/CD75
1 2
SSD03 SSD03
TU2 TU2
6 1
VIN SW
2 5
GND OV
4 3
EN FB
SS6610 SS6610
TR10 TR10
TR11 TR11
LED_BRIGHTNESS
TC4 TC4
10K 10K 47K 47K
0.1uF/NC 0.1uF/NC
CURRENT=10mA
CURRENT=10mA
+5V
TQ1 TQ1
TR18 TR18
SI2301 SI2301
4K7 4K7
TQ21 TQ21
2N3904/SOT23 2N3904/SOT23
TR17 TR17
TJ5 TJ5
1
1K 1K
2
3
4
CON4 CON4
TD3 TD3
POWER ON
2
1
LED正1 LED正1
LED+
TC2 TC2 + + TE2 TE2
0.1uF 0.1uF 2.2UF 2.2UF
TJ4 TJ4 TO LED B/L TO LED B/L
LED+
1
LED+
LED-
2
LED-
TR6 TR6
100K 100K
TR7 TR7
7.5K/NC 7.5K/NC
LED负1 LED负1
TR9 TR9 1K 1K
LED-
TR12 TR12
7.5K/NC 7.5K/NC
TR13 TR13 TR14 TR14 TR15 TR15
10R 10R 10R 10R 1R 1R
CURRENT=2mA VCC3.3V
TL7 NC TL7 NC
TL2 TL2 10R/FB 10R/FB VEE TL3 TL3 10R/FB 10R/FB VDD
TE5 TE5 TC5 TC5 TC6 TC6 TE6 TE6
10uF/10V 10uF/10V 0.1uF 0.1uF 0.1uF 0.1uF 10uF/10V 10uF/10V
1
2
TL6 TL6 10R/FB 10R/FB ADKEY1
3
4
TC9 TC9
20pF 20pF
1
D
C
B
A