SK100
AC In
BD101
47uF/450V
47uF/450V
47uF/450V
RL101
F501
1.6A / 250V
Q102
Q101
T501
IC501
IC502
IC503
F101
3.15A / 250V
D603
Q602
Q601
L601
T101
P701
P832
P201
P203
P202
n/c
IC102
VC_2B
VC_2D
VC_2C
VC_2A
VC_1D
VC_1C
VC_1B
VC_1A
VC_4D
VC_4C
VC_4B
VC_4A
VC_3D
VC_3C
VC_3B
VC_3A
D253
Q251
D251
D252
D255
D256
D261
-
+
F100
5A / 250V
SMPS BOARD
p/n: EAY62169801
100uF/100V
100uF/100V
+
-
+
-
C257 C256
45V
W/Washer
Different Size
5V_Normal
Grayed out components are on the back
P901
P1702
P502
IC802
IC803
IC602
EB
C
Q901
P1501
P1502
P1302
E
B
C
Q902
X601
SW1
IC504
IC508
P601 N/C
EB
C
Q1001
D
SG
Q1002
BCM
IC101
IC102
IC804
IC401
IC402
IC1702
L505
Q503
Q508
IC501
IC507
IC506
IC505
IC1203
IC103
IC1204
IC701
1
2
3
2
IC2103
P101
N/C
P102
N/C
P1601
Q501Q502
E
B
C
E
B
C
L1704
L1707
L1708
L1703
X602
IC801
12.2V
Each Pin
MAIN BOARD
p/n: EBR71850702
p/n: EBR73146501
p/n: EBR71850705
L509
L516
L515
SW1 Microprocessor Reset
5V_USB
3.3V_
Normal
0.9V FET
Switch
0.9V FET
Switch
+0.9V_CORE
USB2 EDID
NVRAM
USB1 EDID
CEC
Earphone
Amp
RGB_DDC_SDA
RGB_DDC_SCL
NAND
FLASH
HDMI
Selector
+1.26V_TU
1
18
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
TU2101
TUNER
RS232
Microprocessor
EEPROM
+2.5V_BCM35230
+1.5V_DDR
DDR
DDR
Audio Amp
RL_ON Drivers
Power Det (24V)
Power Det (12V)
INV_CTL
Driver
Wireless Dongle
Switch
42LV5500 INTERCONNECT DIAGRAM
Indicates Hot
Ground
Front IR
Note: If a particular area is exhibiting a dimmer backlight level than other areas or
the overall brightness seems dim, be sure to first check the customer’s Menu
setting for Backlights. Raise the percentage and see if the overall brightness returns
to normal. If not,
1
st
: Check the P-DIM level, it should rise with the percentage shown on screen.
100%, 3.3V. Follow the P-DIM signal all the way to the Inverter.
2
nd
: Turn off Local Dimming in the Customers Menu. If the brightness returns to
normal, examine the signals required for Local Dimming.
(SIN, V-SYNC and SCLK).
SMPS TEST 1: Force Power Supply On.
Disconnect P502 on Main board.
(A) Jump pins 9, 10, 11 or 12 (3.5V) to pin 1.
Test Voltage Outputs 12V, 24V to Main and
36V to the Inverter Section of the SMPS.
Remove AC power. Leave the jumper in place.
SMPS TEST 2: Force the Backlights On.
(B) Jump pins 9, 10, 11 or 12 (3.5V) to pin 18
(DRV-ON). Apply AC power, the Backlights
should turn on. Note, the LED B+ will now jump
to 65V then back down to 45V.
Note; If there is a problem with a load from the
panel backlights, you can remove AC and
Disconnect P202 or P203. When AC is
reapplied, the Backlight LEDs should turn on
for about 4 seconds and then shut off.
P901 Connector "MAIN Board" To "IR Board"
Pin
STBY Run Diode
1
2
3
4
To the Panel
SCLK Pin 3 P832
3.54V p/p
V-SYNC Pin 8 P832
3.5V p/p
MOSI Pin 5 P832
3.57V p/p
Local Dimming On
MOSI Pin 5 P832
3.57V p/p
Local Dimming Off
You can also test each of the 12 blocks functionality by grounding the return
path signal through a 220Ω. See “Forcing on a Block of LEDs on the right.
PANEL TEST
To run the T-CON “Panel Test”,
remove the LVDS cables.
Jump 12V to the 12V fuse.
Jump VCC 3.3V to pin 44 on CN1.
White, Red, Blue, Green and Black
patterns show on screen.
To Spk
Ft. IR/Intelligent Sensor
And Soft Touch Key Board
Pin Label TP Run Diode Check
1 LED+ C256+ 45V OL
2 n/c n/c n/c OL
3 VC-3A EL70 *1.2V~10.4V OL
4 VC-3B EL71 *1.2V~10.4V OL
5 VC-3C EL72 *1.2V~10.4V OL
6 VC-3D EL73 *1.2V~10.4V OL
7 VC-4A EL74 *1.2V~10.4V OL
8 VC-4B EL75 *1.2V~10.4V OL
9 VC-4C EL76 *1.2V~10.4V OL
10 VC-4D EL77 *1.2V~10.4V OL
11 n/c n/c n/c OL
12 LED+ C256+ 45V OL
*White to Black screen
P202 White Plug "SMPS Board" To "Panel LEDs"
Pin Label TP Run Diode Check
1 LED+ C256+ 45V OL
2n/c n/a n/c OL
3 VC-1A EL62 *1.2V~10.4V OL
4 VC-1B EL63 *1.2V~10.4V OL
5 VC-1C EL64 *1.2V~10.4V OL
6 VC-1D EL65 *1.2V~10.4V OL
7n/c n/a n/c OL
8 VC-2A EL66 *1.2V~10.4V OL
9 VC-2B EL67 *1.2V~10.4V OL
10 VC-2C EL68 *1.2V~10.4V OL
11 VC-2D EL69 *1.2V~10.4V OL
12 n/c n/a n/c OL
13 LED+ C256+ 45V OL
*White to Black screen
P203 Black Plug "SMPS Board" To "Panel LEDs"
DRV-ON
B
P201
A
3
1
7
5
11
9
15
13
19
17
21
4
2
8
6
12
10
16
14
20
18
22
23 24
SMPS TEST 1
P201
A
PWR ON
3
1
7
5
11
9
15
13
19
17
21
4
2
8
6
12
10
16
14
20
18
22
23 24
12V
Top pins on
connector
are odd numbers.
STBY 3.5V
9,10,11,12
12V
12V
24V 24V
24V
Top pins on
connector
are odd numbers.
SMPS TEST 2
12V
STBY 3.5V
9,10,11,12
12V
12V
PWR ON
24V 24V
24V
(1)
PWM Pin 22 can vary according to
incoming video IRE level, OSD
Backlight setting and then Intelligent
Sensor (room light condition).
Output from the Video Processor.
Range 0.2V to 3.3V.
PWR-ON: Starts 12V, 24V
and 35V LED Power.
DRV-ON: Starts Backlights
LED Power goes to 65 then
down to 45V.
SCL 2.9V 3.49V 3.28V
SDA 2.92V 3.49V 3.28V
Gnd Gnd Gnd Gnd
KEY 1 3.26V 3.28V 1.88V
KEY 2 3.26V 3.28V 1.88V
3.5V_ST 3.55V 3.49V 1.15V
5
6
Label
Pin
STBY Run Diode
7
8
9
10
Gnd Gnd Gnd Gnd
LED_B 0V 0V OL
IR 1.48V 1.45V OL
0.35V 3.34V 0.53V
Label
11
12
Gnd Gnd Gnd Gnd
+3.3V_Normal
0V 0V 2.67V
LED_R
Pin
STBY Run Diode
13
Gnd Gnd Gnd Gnd
S/T_SCL 3.55V 3.49V 1.86V
S/T_SDA
Label
14
15
3.55V 3.49V 1.86V
Motion Remote
P1302 "MAIN Board" To "Motion Remote"
Pin Label STBY Run Diode Check
1 3.5V_Normal 0.35V 3.34V 0.53V
2 Gnd Gnd Gnd Gnd
3 M_Remote_RX 0.35V 3.33V OL
4 M_Remote_TX 0.35V 3.33V OL
5 Reset 0.35V 3.33V 2.41V
6 DC_MRemote 0.35V 3.33V 2.38V
7 DD_MRemote 0.35V 3.33V Gnd
8 Gnd Gnd Gnd Gnd
9 GPI0-O 0V 0V OL
10 GPI0-1 0V 0V OL
11 GPI0-2 0V 0V OL
12 GPI0-3 0V 0V OL
Warning:
T-CON Board
under shield.
Be sure to reinsert
screws before
operating set with
shield removed.
P832 "SMPS" to P1601 "MAIN Board"
Pin Label Run Diode
1 VSYNC 0V OL
2SDA3.25V OL
3SCL3.25V OL
4SIN0.18V OL
5 Gnd Gnd Gnd
6 L/DIM0_SCLK 0.1V OL
7 n/c n/c OL
8 Reverse Gnd 1.91V
Pin Label Run Diode
No Stand-By voltages
P1601
"SMPS Board" To
P832 "MAIN Board"
Pin Diode
1 Gnd
2 OL
3 OL
4 Gnd
5 OL
6 1.61V
7 1.59V
8 OL
p/n: EBR72671001
p/n: EBR72499601
LCD PANEL
p/n: EAJ61749101
Hot Ground
Chassis
Ground
Pin Label STBY Run Diode Check
24
ERROR
n/c n/c 2.03V
23
n/c
n/c n/c OL
22
(1)
PWM 0V OL
21
12V 0V 12V 0.48V
20
n/c n/c n/c OL
19
12V 0V 12V 0.48V
18
DRV-ON 0V 3.26V OL
17
12V 0V 12V 0.48V
16
V_Sync 0V 0V OL
13-15
Gnd Gnd Gnd Gnd
9-12
3.5V 3.55V 3.53V 2.63V
5-8
Gnd Gnd Gnd Gnd
2-4
24V 0V 24.5V 1.09V
1
PWR-ON 0V 3.41V 1.15V
P201 "SMPS Board" To P502 "MAIN Board"
0.2V~3.3V
Stby: 399V
Run: 398.5V
Stby: 397V
Run: 396.5V
Audio Mute
EB
C
Q904
IC601
E
B
C
Q906
SG
D
Q507
E
B
C
Q506
EB
C
Q505
D810
C
A1 A2
EB
C
EB
C
Q2105
C
A1
A2
D707
D710
C
A1 A2
C
A1
A2
D708
D711
C
A1 A2
C
A1
A2
D713
Q102
G
S
B
D
G
S
B
D
G
S
B
D
Q101
EB
C
Q801
Q710
Q2104
3
1
2
IC502
3
1
2
IC503
E
B
C
Q504
EB
C
Q1701
P502
"MAIN Board"
To P201
"SMPS Board"
Pin Diode
24
OL
23
OL
22
2.35V
21
2.07V
20
OL
19
2.07V
18
1.53V
17
2.07V
16
OL
13-15
Gnd
9-12
1.15V
5-8
Gnd
2-4
OL
1
2.89V
UC1
U5
F1
3A/125V
L2
L3
Q12
1
2
3
2
1
2
3
2
D6
D3
D2
FL1
FL2
D1
L1
(3.32V)
US1
CN5
CN4
CN1
CN2
5) Gnd
6) Gnd
7) Gnd
8) Gnd
U5
TO TFT MODULE
28V
Pin 9 VGHR
-5V
Pin 10 VGHF
28V
Pin 11 VGHODD
28V
Pin 12 VGHEVEN
-5V
Pin 13 VGL_I
-5V
Pin 14 VST
Pin 20,21 P-VDD
28V
Pin 52 VGHR
-5V
Pin 51 VGHF
28V
Pin 50 VGHODD
28V
Pin 49 VGHEVEN
-5V
Pin 48 VGL_I
-5V
Pin 47 VST
Pin 40,41 P-VDD
4)
3.31V
3) 3.3V
2)
2.95V
1) 3.3V
16.74V 16.74V
HVDD
U6
U3
VGHR
VGHF
VGHODD
VGHEVEN
VGLI
VST
VGL_I -5V
3.3V
Pin 35 VCC
3.3V
Pin 25 VCC
D7
1
2
V
Panel
Test
TP 44
Pin 18
1) 28.9V
2) 28.2V
3) 30.4V
3) Gnd
2) 1.6V
1) 0.6V
LVDS LVDS
Gnd
Gnd
Gnd
(11.76V)
Gnd
Gnd
Gnd
C102
C101
C105 C106
VGHODD 28V
VGHF -5V
VGHR 28V
VST -5V
VGHEVEN 28V
P-VDD 16V
VDD 16.74V
VDD 16.74V
(18.3V)
(11.76V)
(3.35V)
(30V)
(25.9V)
(11.76V)
12V
VCC 3.3V
TO TFT MODULE
12V
Q11
Pin 15 Pin 13
Pin 12
Pin 11
Pin 10
Pin 7-8
For DC voltages for
Main board
components see
Page 2 of the
Interconnect diagram.
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