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TH-L37D25A
9.2.
Detailed Block Diagram (1/3)
P-BOARD
POWER SUPPLY
D102
RECTIFIER
4A AC250V
L202
D201
Q201
Q202
Q203
CONTROL
D205
I201
PFC
Q204
D210,D211
D103
RECTIFIER
F101
2A AC250V
D409
D403
L003
LINE
L001
FILTER
STB
CONTROL
F001
F002
I401
4A
4A
AC250V
AC250V
Q401
AC IN
DET
CNAC
1
2
SUB_ON
Q305
AC CORD
12V
CURRENT
CONTROL/DRIVER
Q357
D
Q352A
VCC
BACK
LIGHT
G
LED DRIVE
ON
Q356
PWM
SENSE
PWM1
I351A
Q351A
SOS Latch
SOS
Q355
SOS
CURRENT
CONTROL/DRIVER
D
Q352B
VCC
G
LED DRIVE
PWM
SENSE
PWM2
I351B
Q351B
SOS
CONTROL PANEL
ASSY
OPERATION
BUTTON
V-BOARD
RM2500
SN2500
PNJ4815M01TV
POWER LED
REMOCON
C.A.T.S
REMOTE RECEIVER
C.A.T.S. SENSOR
HOT
H O T
C O L D
COLD
D560
174V
Q301,Q302
T301
F301
D353
174V
D557
RESONANCE
D363
D559
18V
D556
D653
D558
I301
D753
12V
D555
POWER
D755
CONTROL
Q553
Q501
I551
Q554
D554
PHOTO COUPLER
Q551
SOS
I751
I501
PHOTO COUPLER
V_DET
V+
I752
12V ERROR DET
I552
S102
D452
S101
I553
SUB_ON
Q452
ERROR
D565
DET
S103
12V
R003
SUB_ON
D566
D564
Q454
T401
L401
Q556
5.8V
5.8V_ON
L451
D451
AC IN_ON
Q453
F401
I402
D402
PHOTO COUPLER
I451
I452
STB5.8V
PHOTO COUPLER
ERROR DET
I453
PHOTO COUPLER
D3A2-D3C2/D3D2-D3F2
L352A
I3A1-I3C1/I3D1-I3F1
L353A
D357A
OVP DET
V IN
V OUT
Q354A
LED CURRENT
D3A1-D3F1
CONTROL
I352A
PHOTO COUPLER
D358A
I353A
OVP
174V
I354A
PHOTO COUPLER
ERROR DET
D3G2-D3I2/D3J2-D3L2
L352B
I3G1-I3I1/I3J1-I3L1
D357B
L353B
OVP DET
V IN
V OUT
Q354B
LED CURRENT
D3G1-D3L1
CONTROL
I352B
PHOTO COUPLER
D358B
I353B
174V
OVP
I354B
PHOTO COUPLER
ERROR DET
A-BOARD
DIGITAL SIGNAL PROCESSOR
S01
A02
STB5.8V
1
1
5.8VS
IIC_TU
2
2
KEY
3
3
D2500
POWER LED
V10
A10
SUB5V
7
8
STB3.3V
3
4
G_LED_ON
2
3
R_LED_ON
1
2
C.A.T.S
4
5
REMOTE
5
6
P2
A09
AUDIO_VCC
7
7
12V
DTV12V
4
9
DTV12V
5
10
BACK LIGHT
BACK LIGHT
BACK_LIGHT_SOS
SOS
SOS
12
2
Q555
SOS_ON
Q4770,71
D553
STB_SUB5.8V
RELAY_ON
RELAY
11
3
SUB_ON
SUB_ON
9
5
SUB_ON
5.8V
5.8VS
1
13
5.8V
STB_SUB5.8V
2
12
BACK
BACK_LIGHT
LIGHT ON
_ON
BACK_LIGHT_ON
13
1
IC5220
PWM
15
TC06
174V
CN01
#1 Anode
1
3
#1
Cathode
4
5
8
#2
9
Cathode
10
#2 Anode
TO
12
LED
BACK LIGHT
CN02
#3 Anode
1
3
#3
4
Cathode
5
9
#4
10
Cathode
11
#4 Anode
13
34
JK3301C
TU2901A
AV1
AV2
ANT IN
TUNER
FE1.2V
IC3000
AV SW
IC8300
OFDM
AV1
IC2950
V/Y/PB/PR
IIC_TU
1.2V
L/R
AV2
V
SUB3.3V
IIC2
L/R
IC8302
AV3
DIGITAL
DEMODULATOR
Y/C/V
2.5V
L/R
PC
R/G/B/H/V
TV
V
SUB5V
SUB9V
DVB_CVBS
IC2952
TUNER5V
+5V
IC5501
DTV12V
+3.3V
SUB_ON
+1.5V
IC5500
D5422
D5423
+1.2V
+1.2V
IC5200
SUB5V
+5V
IC5280
STB5V
STB5V
SUB9V
SUB_OP_5V
D5424
D5425
D5427
D5426
P17V
DTV12V
D5420
D5421
OVP DET
Q5241
PANEL_VCC_ON
TC05
A15
1
PNL12V
5
46
IIC1
47
PWM_POWER_ON
49
13
LVDS DATA
[R(A-D)_0+/-)]
24
29
LVDS DATA
[R(A-D)_E+/-)]
40
(SIDE)
JK3304
JK3300
AV3
PC
MONITOR OUT
1
V OUT
LR OUT
IIC2
MAIN OUT
Y/PB/PR,
3
R/G/B/H/V
CVBS
L/R
DTV
L/R
5
7
SUB3.3V
SUB1.5V(DDR1.5V)
9
SUB1.2V_A
SUB1.2V_D
11
13
DCDC_CTL
15
+5V
IC5300
17
19
LVDS DATA
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