J2
32LD350 INTERCONNECT DIAGRAM
F101
24V 7A
J1
TO TFT MODULE PANEL BOARD
LVDS
CN1
J2
J1
Front IR
Si
de
(
Ke
y) C
o
nt
ro
ls
IR Receiver
Power Button
P3000
P402 to SMPS P201
Pin
Diode Check
1
2-4
Open
5-8
9-12
13-16
17
18
1.5V
19
2.58V
20
21
22
23
2.75V
2.58V
Open
2.58V
24
0.91V
3.04V
Gnd
Gnd
Gnd
Open
For Voltages
See P201 SMPS
To all Speakers
All pins 12.95V
Pin
Label
STBY
Run Diode
1
SCL
0V
2
Gnd
3
0V
4
5
Key 2
6
Gnd
7
LED_B
8
IR
9
10
Open
Open
1.52V
Gnd
Open
Gnd
SDA
Gnd
3.4V
P2401 ‘Main” to J1 "IR Board"
Gnd
2V
0V
0V
Gnd
3.39V
Gnd
1.98V
0V
0V
2.3V
Key 1
3.4V
3.39V
1.52V
ST_3.3V
3.41V
3.39V
0.9V
Gnd
Gnd
Gnd
Gnd
+3.3V
11
12
0.58V
0.2V
3.3V
LED_R
2.49V
0V
2.14V
450V
68uF
+
-
450V
68uF
+
-
F501
3.15A / 250V
F100
5A / 250V
SK100
D101
Q601
D602
Q101
D252
D251
D201
D255
P201
P203
L600
LF102
T101
T501
Q102
N
L
SMPS
P/N: EAY60868901
D501 IC500
D502
D503
D801
C608
C607
IC101
0V STBY
388V RUN
(1)
PWR-On
Pin 1:
Turns on 12V, 24V to the
Main and 24V to the
Inverter P203 Pins 1~5.
(2)
INV-On
Pin 18:
Turns on the Backlights
(3)
Error_Out
Pin 20:
(Silk Screened A-DIM)
Goes high (3.3V) when the
backlights are told to come
on. Goes back low when
they light.
If it goes high again on the
5
th
attempt to fire the
backlights, the set shuts
off.
(4)
A-DIM
Pin 22:
(Silk Screened P-DIM)
Is not used
.
(5)
P-DIM
Pin 24
(Silk Screened Error_Out)
can vary according to
incoming video IRE level
and OSD Backlight setting
Output from the Video
Processor IC100. Range
0.65V to 3.25V.
P201 “SMPS” to P402 "Main PWB"
Pin
Label
STBY
Run Diode
1
0V
2-4
0.73V
5-8
9-12
13-16
17
Gnd
11.96V
18
3.5V
3.32V
Open
19
N/C
Open
20
11.96V
21
0V
11.96V
22
0.3V
4.49V
23
3.28V
1.16V
Open
Open
Open
24
(1)
PWR_ON
0V
2.46V
24V
Gnd
12V
(2)
INV_ON
12V
(3)
Error_Out
12V
(4)
A-DIM
(5)
P-Dim
24.19V
0V
0V
0V
0V
3.41V
3.4V
Open
0V
0.59V
Open
n/c
n/c
Open
Gnd
Gnd
Gnd
Gnd
Gnd
Gnd
Open
Pin
Label
STBY
Run Diode
To Back
Light
To Back
Light
To Back
Light
To Back
Light
To Back
Light
To Back
Light
To Back
Light
To Back
Light
P203 "SMPS" to CN1 "Inverter PWB"
Pin
Label
STBY
Run
Diode
1,2,3,4,5
24V
0V
24.19V
Open
6,7,8,9,10
Gnd
Gnd
Gnd
11
(3)
Error_Out
0.59V
Open
12
3.31V
13
(4)
A-DIM
4.5V
14
(5)
P-Dim
2.46V
0V
0V
0V
0V
Open
Open
Open
INV_ON
Gnd
CN1
Diode
Check
All pins
Open
Except Gnd
There is a 12V Fuse on
the Panel Board.
Grayed out components are
on the Back Side.
Main Boards Used in the 32LD350:
EBU60850009 32LD350 AUSWLJR and AUSDLFR
EBR66049702 32LD350 AUSDLJR
EBU60850010 32LD350 AUSDLUR
EBU60850003 32LD350 CUSDLH
EBU61005102 32LD350 CUSWLH and CUSWLHO
SMPS Used in the 32LD350:
EAY60868901
32LD350 AUSWLJR or
AUSDLFR or AUSDLUR or AUSDLJR
EAY60869101
32LD350 CUSWLH or
CUSDLH or CUSWLHO
Ballast
TFT Interface
Board
12V Pins 27 ~ 30 and
LVDS Video Signals
12V Pins 2 ~ 5 and
LVDS Video Signals
1 and 30 are Gnd.
F101
Diode
Check
Red lead Open
Blk lead 0.9V
1
2
3
2
1
2
3
2
1
2
3
2
1
2
3
2
1
2
3
2
1
2
3
2
1
2
3
2
1
2
3
2
Q110
Q106
Q103
Q109
Q104
Q108
Q107
Q101
1
2
3
2
U1
L101
1
2
4
3
1
3
4
1
3
4
1
3
4
1
3
4
1
3
4
1
3
4
1
3
4
1
3
4
T103
T104
T105
T106
T107
T108
T109
T110
U201
U2
U3
1
2
3
2
Q110
Q106
Pin
1)
2)
3)
Gnd
9.03V
4.58V
VOLTAGES
Q103
Q109
Pin
1)
2)
3)
24.16V
9.03V
0V
1
2
3
2
1
2
3
2
Q104
Q108
Pin
1)
2)
3)
Gnd
9.03V
4.58V
Q107
Q101
Pin
1)
2)
3)
24.16V
9.03V
0V
1
2
3
2
U1
Pin
1)
2)
3)
0V
Gnd
24.07V
1
2
3
2
Put the 3 screws
in on the right
side for service
position.
SW100
Microprocessor
Reset
MAIN BOARD
p/n: EBU60850003
IC1
IC401
USB1
18. IF p
17. IF n
16. IF AGC
15. Reset
14. 3.3V
13. 1.26V
12. GND
11. CVBS
10. NC
9. SIF
8. NC
7. SDA
6. SCL
5. NC
4. NC
3. 5V
2. NC
1. NC
Digital Video
Analog Video
Tuner B+
Tuner Data
Tuner Clock
Audio
IC100 Mstar
Micro and Video
Processor
P802
P402
L406
IC1000
IC1450
Q100
X100
12MHz
HDMI
Headphone
SID
E
A/V
3
2
1
2
IC5001
TUNER TDVJ-H001F
P2401
P600
R-R+L-L+
X1005
25MHz
E
B
C
E
B
C
C
A1
A2
D1100
Q1105
Q1100
IC2
IC105
L415
L423
IC405
IC403
L421
L422
IC406
IC600
L607
L606
C
A1 A2
D7705
JK7700
JK1104
JK1102
JK1103
JK9800
IC1004
IC407
IC101
E
B
C
E
B
C
E
B
C
Q7702
Q1104
Q1103
E
B
C
IC102
Q407
E
B
C
E
B
C
Q406
S
G
D
Q409
IC7702
C
A1
A2
D7706
E
B
C
E
B C
Q110
1
Q110
2
IC1100
E B
C
Q5004
IC1201
IC1104
D1115
IC1105
C
A1
A2
E
B
C
E
B
C
Q2405
Q2406
IC7701
E
B
C
Q7701
Q7703
C
A1
A2
D7703
C
A1
A2
D102
E
B
C
Q600
1
2
3
2
IC601
In
Gnd
Out
Gnd
IC400
IC104
3
2
1
IC103
E B
C
1
2
3
Q401
Q402
E B
C
Q405
2
1
3
IC408
+3.3V_TU
From 3.3V_Normal
+1.26V_VDDC
S
B
G
D
From 3.3V_ST
HDCP EEPROM
+1.8V_DDR
From 3.3V_ST
From 3.3V_ST
Power On Switch
Power On
Switch Ctl
Reset Gen
DDR
MStar EEPROM
3.3V_Normal In
+3.3V_AVDD_MPLL
3.3V_ST In
12V In
+1.8V_AMP
+3.3V_Normal
12V In
+5V_Normal
Power_Det
INV_CTL
Driver
3.3V_Normal
In
Mute
Routing
CEC
Switch
EDID HDMI 2
HDMI Hot
Swap
Audio Mute
3.3V_Normal Pin 8
1.8V_Amp Pin 16
24V Amp_VCC Pins 32~35
24V Amp_VCC Pins 49~52
Audio Amp
R-R+
L-L+
PC EDID
Optical Audio Amp
+5V_TU
From 5V_Normal
+1.26V
For Tuner
3.3V_TU In
Earphone
Mute
Earphone
Amp
Digital
Video
Serial
Flash
WP
NAND
Flash
USB +5V
Overcurrent
5V_USB In
EDID HDMI 4
+1.2V_PVSB
3.3V_TU
In
5V_USB
12V In
Panel
Vcc 1st
Driver
Panel
Vcc 2
nd
Driver
Panel Vcc Switch
DDR
Earphone Amp
Mute
Pin 1 of T103 ~ T110
Warning: Over 1.2Kv
To each Backlight.
Pin 3 of T103 ~ T110
2Msec per/div
2.6V p/p 120Hz
50% P-DIM
2Msec per/div
44V p/p 120Hz
50% P-DIM
Pin 4 of T103 ~ T110
SMPS TEST: To Force Power Supply On.
Disconnect P402 on Main Board.
Jump pin 1 (PWR_ON) to pin 9, 10, 11 or 12 .
This should force the SMPS to the on state. All
Voltages should be produced.
(24V and 12V to Main. 24V to Inverter).
The Backlights should come on.
Note: STBY 3.5V Must be present when AC applied.
Jumper
P201
Pin 1 Key 1
Pin 3 Key 2
Diode Check Open
Pins 2 and 4 Gnd
Key 1 / 2 Voltage and Resistance
Chart with buttons pressed.
Resistance
17M
10M
5.27M
0.98M
Function
Vol +
Vol -
Menu
Enter
Voltage
1.70V
1.09V
0.52V
0.10V
Key 1
Resistance
17M
10M
5.27M
0.98M
Function
CH +
CH -
Power
Input
Voltage
1.70V
1.09V
0.52V
0.10V
Key 2
Voltage and Resistance taken
with AC applied to the set.
No Button pressed Resistance is
Open and Voltage is 3.4V
Diode
Gnd
Open
Open
Open
Gnd
2.77V
Open
Open
2.97V
Gnd
Open
Open
J1 Ft IR
Hot Gnd (Shock Hazard)
Hot
Cold
