Lvds Output/Usb; Lvds Output; Backlight Brightness Control; Backlight On/Off Control - Haier LET32/40T900 Service Manual

14) LVDS Output/USB

TP402
O0N E0N
TP
O0P TP403 E0P
TP404
TP
O1N E1N
TP
TP405
O1P E1P
TP406
TP
O2N E2N
TP
O2P TP407 E2P
TP408
TP
O3N E3N
TP
O3P TP409 E3P
TP410
TP
O4N E4N
TP
TP411
O4P E4P
TP

Backlight Brightness Control

DV33
BL_DIM(PWM for Bright_Adj):
Max: 0V
Min: +3V3
R401
NC/4K7 1/16W 5%
BL_DIMMING
R406
4K7 1/16W 5%

Backlight ON/OFF Control

DV33
BackLight_SW:
R410
BackLight on: Low
4K7 1/16W 5%
BackLight off: High
BL_ON/OFF
TP412
TP
TP413

LVDS OUTPUT

TP414
TP
TP
TP415
TP416
TP
TP
TP417
TP418
TP
TP
TP419
TP420
TP
R419
TP
TP421
LVDS_CTRL1
NC/100R 1/16W 5%
O0N
O1N
TP
O2N
OCKN
O3N
O4N
E0N
E1N
E2N
ECKN
E3N
E4N
BL CONTROL
+5V_SW DV33
PWM CONTROL
R402 R403
NC/4K7 1/16W 5% 1K 1/16W 5%
R405
100R 1/16W 5% BRIGHT_ADJ
DC CONTROL
1 Q402
PMBT3904 C403
NC/10U 16V
+5V_SW DV33
DV33SB
R407 R408
NC/2K 1/16W 5% 1K 1/16W 5%
R409
NC/10K1/16W
INVERTER_ON_OFF
1 Q401
PMBT3904
R404 C401
4K7 1/16W 5% NC/47uF 6.3V
LVDS_VDD
LVDS_VDD
DV33
LET40T900 CN408
2 1
4 3
LVDS_CTRL 6 5
O0P
8 7
O1P
10 9
12 11
14 13 O2P
16 15 OCKP
18 17
O3P
20 19
22 21 O4P
24 23
E0P
26 25
E1P
28 27
30 29
32 31 E2P
34 33 ECKP
36 35
E3P
38 37
40 39 E4P
V/T 1.25 MM
033G8033 40 X(XINYA)
USB 2.0
R408 R406 C405
100R 1K N/C
5K6 1K 10U
C406
NC/10U 16V
USB_PWR_EN0
INVERTER
R410 R411
ON/OFF
3V3 N/C 1K
5V 2K N/C
C411
NC/10U 16V
USB_PWR_EN1
86
NEAR CN408
PANEL_VCC
FB405 120R/3000mA
1 2 CONN
FB406 120R/3000mA
1 2 LVDS_VDD 30
LVDS_VDD 29
LVDS_VDD
28
LVDS_VDD
C409 27
26
25
10uF 16V 24
23
LVDS_CTRL
22
21
20
O0N
19
O0P
18
17
O1N 16
O1P 15
14
O2N
13
O2P 12
11
OCKN
10
OCKP
9
8
O3N 7
O3P 6
5
4
3
2
1
LET32T900 CN409
BAV99 BAV99
D4051 D4050
+5V_STB
USB CONN
CN103
4
USB_DP0
R413 0R05 1/16W 3
USB_DM0
R414 0R05 1/16W 2
1
FB404 +
220R/2000mA
TH4050 C405
PTCR 1 2 100uF 16V
+5V_SW
1 2
R/T H:10.5MM DIP
C407
NC/10U 16V 88G 352A03 CL(Changling)
U105
NC/STMPS2171STR
5 1 R417
IN OUT
2 NC/10K 1/10W
GND
4 3 USB_PWR_OCP0
EN FAULT
R415
R416 NC/4.7K1/16W C408
NC/4.7K1/16W NC/100N 16V
SMD/0402
DV33
BAV99 BAV99
D4053 D4052
+5V_STB
USB CONN
CN104
4
USB_DP1
R423 0R05 1/16W 3
USB_DM1
R422 0R05 1/16W 2
1
FB407 +
220R/2000mA
TH4051 C410
PTCR 1 2 100uF 16V
+5V_SW
1 2
C413
NC/10U 16V
U106
NC/STMPS2171STR
5 1 R420
IN OUT
2 NC/10K 1/10W
GND
USB_PWR_OCP1
4 3
EN FAULT
R424 R421
NC/4.7K1/16W NC/4.7K1/16W C412
NC/100N 16V
SMD/0402 R/T H:10.5MM DIP
DV33 88G 352A03 CL(Changling)
PANEL_VCC
PANEL_VCC 5
+5V_SW
+5V_SW 4,5,7,10,11,13,15
DV33SB
DV33SB 5,6,7,9,11,13
DV33
DV33 4,5,6,7,8,9,13,15,16
+5V_STB
+5V_STB 4,5,7
GND
GND 4,5,6,7,8,9,10,11,12,13,15,16,17
LVDS Interface
E0P
E0P 6
E0N
E0N 6
E1P
E1P 6
E1N
E1N 6
E2P
E2P 6
E2N
E2N 6
ECKP
ECKP 6
ECKN
ECKN 6
E3P
E3P 6
E3N
E3N 6
E4N
E4N 6
E4P
E4P 6
O0P
O0P 6
O0N
O0N 6
O1P
O1P 6
O1N
O1N 6
O2P
O2P 6
O2N
O2N 6
OCKP
OCKP 6
OCKN
OCKN 6
O3P
O3P 6
O3N
O3N 6
O4P
O4P 6
O4N
O4N 6
LVDS_CTRL1
LVDS_CTRL1 6
Backligh Control Interface
BL_ON/OFF
BL_ON/OFF 6
BL_DIMMING
BL_DIMMING 6
BRIGHT_ADJ
BRIGHT_ADJ 4
INVERTER_ON_OFF
INVERTER_ON_OFF 4
USB interface
USB_DM0
USB_DM0 6
USB_DP0
USB_DP0 6
USB_DM1
USB_DM1 6
USB_DP1
USB_DP1 6
USB_PWR_OCP0
USB_PWR_OCP0 15
USB_PWR_EN0
USB_PWR_EN0 6
USB_PWR_OCP1
USB_PWR_OCP1 15
USB_PWR_EN1
USB_PWR_EN1 6