P201
SK100
SK101
F100
SMPS
Switch Mode Power Supply
Hot
Gnd
Hot
Gnd
P203
L
N
F101
AC
I
N
3.15A
250V
5A
250V
BD101
Bridge Rectifier
Q102
Q101
Q601
Q602
D601
D211
D213
D215
T101
L601
D201
T501
IC501
IC502
IC503
IC102
159.9V in Stand-By
190 in Run
42LH90 INTERCONNECT DIAGRAM
SMPS TEST 1: To Force
Power Supply On.
Disconnect P700 on Main
PWB.
Jump pin 7,8,9 or 10 (5V) to
pin 2 using a 100Ω resistor.
(Test Voltage Outputs 12V,
and 24V).
SMPS TEST 2: Jump pin 2 to
pin 20 (INV-ON).
(Backlights and all voltages
should turn on).
P1200 "MAIN” to P101 "Front IR / LED
Main Power SW
Side (Key) Controls
P101
Front PWB
Assembly
IR Receiver
Intelligent Sensor
P100
P102
P102 "Front IR / LED PWB to P100 Keys
Tuner
2
PDIM Pin 24 can vary according to type of signal
being processed and the OSD Backlight setting.
0.6V 0% to 3.3V 100%.
Output from the IC100 Video Processor.
1
ADIM Pin 21
Fixed and not
used
Speakers
J1
P100
Gnd
Key2
Gnd
Key1
Label
Gnd
Open
Gnd
Open
Diode
Check
GndGnd4
3.2V3.2V3
GndGnd2
3.2V
3.2V
1
Run STBYPin
Open3.2V0V12
Open3.2V3.3V_ST11
GndGndGndGnd10
Open3.5V3.5VIR9
Open0V0VWarm ST8
GndGndGndGnd7
5.1V5.1V5V ST6
3.2V3.2VKey25
3.2V3.2VKey14
GndGndGndGnd3
3.3VSDA2
Open3.3V0.57VSCL1
Diode CheckRun STBYLabelPin
POWER On/Off
3.2V
STBYLabel
0.57V
Open
Open
Open
Open
TO TFT MODULE
125V /
3A
CN5
CN4
TO TFT MODULE
UC1
FL1
D8
L1
F1 (12V)
TO TFT MODULE
T-CON
(TFT Driver)
Gnd Protect
FL2
Gnd Protect
CN1
U11
D7
L2
D9
D10
Q1
U12
U10
Pin 2
Pin 4
Pin
56,57,58
Pin 53,54
U5
1) 0V
2) 1.19V
3) 3.3V
B
2.78V
E
3.3V
C
3.3V
16V
20.
5V
14.25
V
-2.4V
1
2
3
2
R701
R702
R704
R705
R706
16V
26V
27V
26V
16V
-4.9V
3.3V
Pin 59
Pin 57
Pin 3,4,5
Pin 7,8
26V
16V
-4.9V
3.3V
C744
R721
( 12V )
U5
Gnd
-4.9V
U5 B+ ( 12V )
3.3V
VCC
16V
3.3V
CN2
VDD
1) Gnd
2) Gnd
3) Gnd
4) Gnd
8) 3.34V
7) 3.09V
6) 3.34V
5) 3.34V
FLASH
P3500
IC3502
Tru-
Motion/
Dimming
P3502
IC3502
Operates at
high
temperature
P3501
P700
X3500
25Mhz
IC3503
IC3504
IC3500
Q706
E
C
B
Q702
IC706
E
C
B
Q701
L718
L710
IC701
L726
IC705
IC704
IC2
SW3500
Not Used
IC801
IC901
IC900
X800
12Mhz
IC1
X100
12Mhz
IC100
Micro/Video
Processor
Mstar
IC707
L712
IC708
IC1000
IC1001
IC101
SW100
E
C
B
Q100
IC105
IC502
IC600
L607
L606
P1200
E
C
B
Q106
IC1002
Q1200
E
C
B
IC1203
TU1001 Tuner
TDVW-H103F
(1)
Analog Video
(19)
Tuner 5V_TU
(4)
Data (8)
Clock (9)
Dig DIF+ (12)
Dig DIF- (13)
SIF (16)
X1005
25Mhz
P101
N/A
IC1004
D1000
12V LVDS
Pins 1~4
P600
IC3505
C
A1
A2
D1223
IC1200
IC1201
D500
C
A1 A2
Q1001
E
C
B
Q1000
IC1003
IC703
E
C
B
C
A1
A2
E
C
B
2
3
1
Q105
IC103
IC702
IC104
IC102
IC800
IC1202
IC501
Q703
E
C
B
Q704
E
C
B
Q705
E
C
B
IC107
2
3
1
D102
Q600
E
C
B
42LH90
MAIN BOARD
Grayed Out Components
are on the Back
D1000
D208
D207
Q212 Q211
L204
L203
IC201
680uF
35V
C203
Q210
Q209
680uF
35V
C212
D202
D203
Q205 Q204
Q10
Q9
L202
L201
C27
D8
D7
Q12 Q11
L4
L3
+
-
+-
680uF
35V
C3
+-
Q202
Q203
680uF
35V
-
+
C12
D2
D3
Q5 Q4
L2
L1
680uF
35V
-
+
Q2
Q3
F1
12A/65V
ZD3
CN1
F2
2A/125V
L5
-
+
680uF
35V
C40
CN3
CN4
IC1
IC3
2
1
3
2
2
1
3
2
IC4 IC15
Q35
Q36
Q37
Q34
Q33
Q32
IC8IC9
Q31
Q30
Q29
Q28
Q27
IC7IC10
Q38
Q39
Q40
Q41
Q42
IC6
IC13
Q43
Q44
Q45
Q46
Q26
Q25
Q24
Q23
ZD303
ZD304
Q22
IC5
IC14
CN307
CN306
n/c
Q21
Q20
Q19
CN305
n/c
Q47
Q48
Q49
Q50
IC301
Processor
Y301 (12Mhz)
213
2
213
2
IC303
IC302
680uF
35V
C227
+
-
1
2
3
4
5
1.25Vp/p1.76Vp/p
D302
To Backlights
To Backlights
24V
CN1 "INVERTER" TO P203 "SMPS"
For Voltages see CN1 Table
P203 "SMPS" TO
CN1 "INVERTER"
1
Ext_VBR_B same as (P-DIM)
OPEN
OPEN
OPEN
GND
GND
GND
GND
GND
0.74V
Pin Label
14 AGP
13
Ext_VBR_B
12
ON/OFF
11
NC
10
GND
9GND
8GND
7GND
6GND
1-5
VIN
OPEN
Diode
Check
Pin Label STBY Run
Diode
Check
14 AGP 0V 0V OPEN
13
1
Ext_VBR_B 0V 0.33V-3.2V OPEN
12 ON/OFF 0V 4.65V 1.6V
11 NC 0.47V 1.66V OPEN
10 GND GND GND GND
9 GND GND GND GND
8 GND GND GND GND
7 GND GND GND GND
6 GND GND GND GND
1-5
VIN 0V 24.0V 2.9V
LED Board
M1
M2
M3
M4
M1-M4
(27.5V)
24V
D302 blinks
1Hz OK
For Main board component
Voltages see PG 3 of
Interconnect Diagram
INVERTER Board
Q19 through Q50
Note: Each output driver (switch) has a TP to the left and right
representing a “V” which indicates a Block of LEDs.
V34 represents Pin 23 of CN4
V33 represents Pin 24 of CN4
Grounding these points when the 27.6V supplies are working will
cause the entire Block of Backlight LEDs to turn on.
(100mA to light one block)
P700 "Main" to P201 “SMPS"
For Voltages see P201
1.3V
Open
2.6V
Diode Check
2.9V
2.2V
1.1V
Gnd
Open
Open
1
19
21
23
2
20
22
24
3,4,5,6
7,8,9,10
11,12
13,14
15,16
17,18
Gnd
Gnd
Open
Open
Open
12V LVDS Pins 1~4
12V LVDS Pins 48~51
(Pin 1)
3.54Vp/p
(Pin 4)
3.48Vp/p
(Pin 6)
3.46Vp/p
P/N EAT60665101
P201 “SMPS" to P700 "Main"
ncncnc1
Gnd
nc
Diode
Check
GndGndGnd
Open
5.15V5.15V5V
Gnd
GndGndGnd
0.98V
12V0V12V
0.74V
24V0V24V
nc
ncncnc19
Open1.66V0V
1
A.DIM21
ncncnc23
Run STBYLabelPin
1.6V
4.98V0VPWR-On2
Open4.65V0VINV.ON20
Open0V0VErr Out22
Open
3.2V0V
2
PDIM24
7,8,9,10
11,12
13,14
Gnd
GndGndGnd
15,16
17,18
nc
3,4,5,6
CN3
27.5V Line on CN3
Pins 1-2 (Out_M2)
Pins 13-14 (Out_M2)
Pins 16-17 (Out_M2)
Pins 26-29 (Out_M2)
Pins 31-32 (Out_M4)
Pins 43-44 (Out_M4)
Pins 46-47 (Out_M4)
Pins 58-59 (Out_M4)
INVERTER CN3-CN4 INFO.
CN4
27.5V Line on CN4
Pins 1-2 (Out_M3)
Pins 13-14 (Out_M3)
Pins 16-17 (Out_M3)
Pins 26-29 (Out_M3)
Pins 31-32 (Out_M1)
Pins 43-44 (Out_M1)
Pins 46-47 (Out_M1)
Pins 58-59 (Out_M1)
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