86
14) LVDS Output/USB
+5V_STB
4,5,7
E4N
6
E4N
O3P
O1N
O3N
E4P
6
E4P
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
41
42
CN408
LET40T900
+5V_SW
4,5,7,10,11,13,15
E2N
BL CONTROL
5K6
100R
PWM CONTROL
DC CONTROL
10U
N/C
1K
1K
R408
R411
2K
N/C
N/C
C405
R406
1K
5V
3V3
R410
INVERTER
ON/OFF
O2P
O1P
1
2
3
4
6
5
1
2
3
4
CN104
USB CONN
R/T H:10.5MM DIP
88G 352A03 CL(Changling)
Backligh Control Interface
+
C410
100uF 16V
OUT
1
GND
2
FAULT
3
EN
4
IN
5
U106
NC/STMPS2171STR
R420
NC/10K 1/10W
1
2
FB407
220R/2000mA
C411
NC/10U 16V
R421
NC/4.7K1/16W
R423
0R05 1/16W
R422
0R05 1/16W
OCKN
C412
NC/100N 16V
1
2
t
TH4051
PTCR
C413
NC/10U 16V
R424
NC/4.7K1/16W
E3P
3
1
2
D4052
BAV99
3
1
2
D4053
BAV99
DV33
+5V_SW
+5V_STB
SMD/0402
USB_PWR_EN1
USB_DM1
USB_DP1
USB_PWR_OCP1
LVDS_CTRL
INVERTER_ON_OFF
BL_DIM(PWM for Bright_Adj):
Max: 0V
Min: +3V3
BL_DIMMING
USB_DM0
USB_DP0
BackLight_SW:
BackLight on: Low
BackLight off: High
Backlight Brightness Control
BRIGHT_ADJ
LVDS_VDD
E4P
O2N
USB_PWR_OCP0
USB_PWR_EN0
E1N
ECKN
OCKP
LVDS_CTRL
USB_PWR_OCP1 15
USB_PWR_OCP1
USB_PWR_EN1
USB_PWR_EN1 6
O4P
6
R/T H:10.5MM DIP
88G 352A03 CL(Changling)
O4P
USB_DM1
6
USB_DM1
DV33SB
5,6,7,9,11,13
OCKN
O2P
O2N
O3N
OCKP
1
2
3
4
6
5
1
2
3
4
CN103
USB CONN
E4N
TP421
TP
TP410
TP
TP411
TP
TP420
TP
O4N
O4P
O4N
6
E4N
E4P
O4N
TP419
TP
LVDS_VDD
OUT
1
GND
2
FAULT
3
EN
4
IN
5
U105
NC/STMPS2171STR
TP413
TP
TP408
TP
1
2
FB406
120R/3000mA
USB_DP1
6
USB_DP1
TP416
TP
1
2
FB405
120R/3000mA
R410
4K7 1/16W 5%
ECKP
R404
4K7 1/16W 5%
C401
NC/47uF 6.3V
TP412
TP
R4
1
1
4K
7 1/
16
W
5%
R406
4K7 1/16W 5%
C409
10uF 16V
O0P
R409
NC/10K1/16W
+
C405
100uF 16V
3
1
2
Q401
PMBT3904
R401
NC/4K7 1/16W 5%
TP418
TP
TP406
TP
1
2
FB404
220R/2000mA
TP402
TP
R417
NC/10K 1/10W
R415
NC/4.7K1/16W
C406
NC/10U 16V
R414
0R05 1/16W
E3N
R405
100R 1/16W 5%
TP417
TP
TP409
TP
BL_DIMMING
R413
0R05 1/16W
R
412
N
C
/4.
7K
1/
16W
R419
NC/100R 1/16W 5%
R403
1K 1/16W 5%
R402
NC/4K7 1/16W 5%
TP404
TP
TP403
TP
1
2
t
TH4050
PTCR
R
418
10K
O
H
M
+
-5%
1/
8W
C408
NC/100N 16V
C403
NC/10U 16V
R407
NC/2K 1/16W 5%
TP414
TP
3
1
2
Q402
PMBT3904
USB interface
TP405
TP
TP415
TP
R408
1K 1/16W 5%
C407
NC/10U 16V
R416
NC/4.7K1/16W
TP407
TP
V/T 1.25 MM
033G8033 40 X(XINYA)
3
1
2
D4050
BAV99
3
1
2
D4051
BAV99
DV33
+5V_SW
+5V_SW
DV33
DV33
DV33
DV33SB
+5V_STB
+5V_SW
LVDS_VDD
DV33
PANEL_VCC
DV33
GND
4,5,6,7,8,9,10,11,12,13,15,16,17
E3N
6
E3P
6
O3P
6
O0P
6
O3N
6
O1P
O1P
6
O0N
6
O1N
6
O2N
6
O2P
6
OCKP
6
E0P
6
OCKN
6
E1P
6
E0N
6
O2P
E1N
6
E2N
6
E2P
6
ECKP
6
E0N
USB_PWR_OCP0 15
ECKN
6
USB_DM0
6
USB_PWR_EN0 6
USB_DP0
6
BL_DIMMING 6
BL_ON/OFF 6
O1P
BRIGHT_ADJ 4
INVERTER_ON_OFF 4
O3P
LVDS_VDD
LVDS_CTRL1 6
O0N
O3N
O1N
O2N
+5V_SW
E2P
LVDS Interface
E1N
E1P
OCKN
O3N
O3P
E0P
O1N
O1P
O2N
O2P
OCKP
E0N
O0N
O0P
E2N
E2P
ECKN
ECKP
E3N
E3P
O3P
LVDS_CTRL1
Backlight ON/OFF Control
NEAR CN408
O0N
E1P
O1N
O0N
O0P
BRIGHT_ADJ
E0P
LVDS_VDD
BL_ON/OFF
DV33SB
GND
PANEL_VCC
O0P
LVDS OUTPUT
INVERTER_ON_OFF
O4N
E0P
E1P
E2P
E0N
E3P
E1N
E2N
E3N
+5V_STB
BL_ON/OFF
O4P
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
LET32T900 CN409
CONN
LVDS_VDD
SMD/0402
PANEL_VCC
5
USB_PWR_EN0
USB_DP0
USB_DM0
USB 2.0
USB_PWR_OCP0
DV33
4,5,6,7,8,9,13,15,16
DV33
LVDS_CTRL1
Summary of Contents for LET32/40T900
Page 5: ...5 2 Operating Instructions 2 1 The Use of Remote Control ...
Page 6: ...6 2 2 To Use the Menus ...
Page 7: ...7 ...
Page 8: ...8 ...
Page 9: ...9 ...
Page 10: ...10 ...
Page 11: ...11 ...
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Page 27: ...27 ...
Page 28: ...28 ...
Page 29: ...29 ...
Page 33: ...33 2 3 Front Panel Control Knobs ...
Page 36: ...36 2 4 How to Connect ...
Page 37: ...37 ...
Page 38: ...38 ...
Page 39: ...39 ...
Page 43: ...43 Step3 Remove the BKT Step4 Separate the AC COVER and SHIELD ...
Page 45: ...45 Step7 Remove the LED BAORD IR BOARD and KEY BOARD ...
Page 46: ...46 LET40T900 Step1 Remove the STAND BASE Step2 Remove the REAR COVER ...
Page 48: ...48 Step5 Remove the LED BAORD IR BOARD and KEY BOARD ...
Page 56: ...56 6 PCB Layout 6 1 Main Board 715G4589M01000004K ...
Page 57: ...57 ...
Page 58: ...58 6 2 Power Board LET32T900 715G4500P01W30003S ...
Page 59: ...59 ...
Page 60: ...60 ...
Page 61: ...61 LET32T900 715G4654P01W21003M ...
Page 62: ...62 ...
Page 63: ...63 ...
Page 64: ...64 LET40T900 715G4581P01W30003H ...
Page 65: ...65 ...
Page 66: ...66 ...