Panasonic PT-LB20NTU / PT-LB20NTE / PT-LB20NTEA / PT-LB20U / PT-LB20E / PT-LB20EA / PT-LB20SU / PT-LB20SE / PT-LB20SEA / PT-LB20VU / PT-LB20VE / PT-LB20VEA Service Manual ▷ View online
10 Interconnection Block Diagram
10.1. Interconnection Block Diagram (1/2)
Interconnection Block Diagram (1/2)
B-Module
Q-Module
B/Q-Module
K-P.C.Board
S2-P.C.Board
S1-P.C.Board
WL-P.C.Board
(PT-LB20NT** only)
(PT-LB20NT** only)
P-Module
PT-LB20NTU / PT-LB20NTE / PT-LB20NTEA / PT-LB20U / PT-LB20E / PT-LB20EA / PT-LB20SU / PT-LB20SE / PT-LB20SEA / PT-LB20VU / PT-LB20VE / PT-LB20VEA
41
10.2. Interconnection Block Diagram (2/2)
Interconnection Block Diagram (2/2)
A-P.C.Board
PT-LB20NT** only
PT-LB20NTU / PT-LB20NTE / PT-LB20NTEA / PT-LB20U / PT-LB20E / PT-LB20EA / PT-LB20SU / PT-LB20SE / PT-LB20SEA / PT-LB20VU / PT-LB20VE / PT-LB20VEA
42
11 Block Diagram
11.1. Power Supply
Power Supply
3
4
1
B1
B4
Q2
STEP-DOWN CHOPPER
Power Cord
AC IN
K1
K2
F9101
Z101
TH101
1
4
P3
5
7
8
12
PHOTOISOLATOR
15 V AVR
HALF BRIDGE
DRIVER
(SLAVE)
DRIVER
(SLAVE)
SWITCHING
TRANSFORMER
TRANSFORMER
RECTIFIER
SWITCHING
REGULATOR
REGULATOR
PHOTOISOLATOR
POWER
FACTOR
CORRECTION
FACTOR
CORRECTION
LAMP
D9608
Q9608
D9609
Q9610
Q204
Q205
Q9611
Q9606
Q107
Q9607
IC9602
IC9603
D9611
Q9609
D9612
MAIN/STB
3.4 V
DC380 V
THERMOFUSE
Power Control
ST1
Lamp ON/OFF
L det
3.4 V
+6 V
FAN 14 V
STB 3.4 V
+17 V
11
3
4
1
P2
P1
HALF BRIDGE
DRIVER
(MASTER)
DRIVER
(MASTER)
PHOTO-
ISOLATORS
ISOLATORS
D9604
Q9604
Q9614
Q9603
D9605
D9606
D
S
D
S
G
Q9605
D9607
B3
B5
B6
Q1
D
S
G
3
5
1
4
2
Q3
LINE
FILTER
FILTER
LINE
FILTERS
FILTERS
15 V
15 V
3
IGNITER
BLOCK
MC202
INTERLOCK
SWITCH
SWITCH
G
D
S
G
D
S
D
S
G
G
IC102
A-P.C.Board
A6
A6
K-P.C.Board
B-Module
B/Q-Module
P-Module
Q-Module
(CONTROLLER)
HOT
COLD
HOT
COLD
A-P.C.Board
A4
A4
PT-LB20NTU / PT-LB20NTE / PT-LB20NTEA / PT-LB20U / PT-LB20E / PT-LB20EA / PT-LB20SU / PT-LB20SE / PT-LB20SEA / PT-LB20VU / PT-LB20VE / PT-LB20VEA
43
11.2. Signal Processing (1/3)
Signal Processing (1/3)
RGB OUT
AMP.
AMP.
RGB2 IN/
RGB1 OUT
CONTROL
RGB1 OUT
CONTROL
PnP
ADAPTER
ADAPTER
IC1024
SW
Q1042
SW
Q1040
IC1023
BLST
QUICK
SW
Q1041
SQUEEZE
MUTE
SWITCH
SWITCH
Q1013
AUDIO AMP
IC1026
Q1010
(Except
PT-LB20SU/
E/EA)
(Except
PT-LB20SU/
E/EA)
IC1003
RGB 1 IN
R
G
B
1
2
3
12
13
14
15
1
2
3
12
13
14
15
SCL
SDA
HD
VD
VCLK
AUDIO
IN
IN
L
R
RESIZING
RS-232C
DRIVER
DRIVER
IC1070
S-VIDEO
IN
IN
C
Y
VIDEO IN
IC1060
Q1044-
Q1048
Q1048
IC1020
Q1050
RGB1_2
RGBIO
MUTE
WLAUDIO_R
WLAUDIO_L
RXD
TXD
VOL
PFAN1
AUDIO SEL
G
R
B
G
R
B
RGB 2 IN/
1 OUT
1 OUT
R
G
B
HD
HD
HD
VD
VD
VD
SERIAL
PBS
A19
PFAN2
INTAKE (R, G)
A18
LFAN1
EXHAUST
A17
INTAKE (B)
A15
LFAN2
MAIN/STB
LAMP_SENSE
POWER
A16
P-Module
P3
P3
Q-Module
Q3
Q3
A6
THERMO1
A4
64M SDRAM
VOB
OSDB
OSDR
OSDG
OSDI
IC1001
X1006
65 MHz (PT-LB20NTU/E/EA, LB20U/E/EA,
LB20VU/E/EA)
44 MHz (PT-LB20SU/E/EA)
65 MHz (PT-LB20NTU/E/EA, LB20U/E/EA,
LB20VU/E/EA)
44 MHz (PT-LB20SU/E/EA)
IC1005
IC1006
3
3
2
3
3
3
2
5
6
7
4
A-P.C.Board
3
5
IC1083
CLOCK
BUFFER
BUFFER
A/D CONVERTER,
VIDEO DECODER,
PLL
VIDEO DECODER,
PLL
S/C-IN
VS-IN
HS-IN
S/Y-IN CVBS
1
PnP
ADAPTER
ADAPTER
IC1002
IC1025
SCL
SDA
VCLK
BUFFERS
SYNC.
SELECT
SELECT
INV.
SW
AUDIO
SELECT
SELECT
2
(Except
PT-LB20SU/E/EA)
PT-LB20SU/E/EA)
PT-LB20SU/E/EA only
PWM OUT
PT-LB20NTU / PT-LB20NTE / PT-LB20NTEA / PT-LB20U / PT-LB20E / PT-LB20EA / PT-LB20SU / PT-LB20SE / PT-LB20SEA / PT-LB20VU / PT-LB20VE / PT-LB20VEA
44
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