Main Board (3 Of 15) Schematic Diagram - Panasonic TH-37LRT12U Service Manual

TH-32LRT12U-A * TH-37LRT12U/M/A

12.4. Main Board (3 of 15) Schematic Diagram

MAIN BOARD PCB-657-D (3/15)
!
PC Input
R602 0 VGA_SDA
R603 0 VGA_SCL
C544 C545
Z15 Z16
47pF 47pF
HZK7A HZK7A
GND_A GND_A
D
+5V_VGA
GND_A
11 1
6
12 2
7
13 3
8
14 4
C526 C527 C528
9
15 5
10 NC/C NC/C NC/C
+5V_PC
J2 GND_A
15PIN D-SUB R41
VGA-DB15F
GND_A NC/1K
R43 0 R44 NC/100
R46 BEAD/120R
GND_A
R47 BEAD/120R
+5V_PC
C542
R50 47pF
10K
FB4 R82 U1A
AVS
C 1 2
FB/1206/19-ohm 7
1K C30
74HC14/SO14
Z22 SO14
47pF
HZK7A
R54
10K
FB5 R57 GND_A GND_A U1C
AHS
5 6
FB/1206/19-ohm
7
1K C32
74HC14/SO14
Z23 SO14
47pF
HZK7A
Add the voltage divider for audio input signals
PC AUDIO INPUT Modified by Monlong 2K70425
J4 GND_A GND_A
L
R500
2
1
3 R
R412
PHONEJACK
R60 C38 R61 C40
GND_A 47K 470pF 47K 470pF
GND_A GND_A
B
A
TH-32/37LRT12
Main Board (3 of 15) Schematic Diagram
5
PC/YPbPr1/YPbPr2
FB1 0/1206/BEAD R26 100 C4 10nF R_IN
Z14 C6 C7 R27
33pF NC/22pF 75
HZK7A
GND_A GND_A GND_A GND_A
FB2 0/1206/BEAD R33 100 C14 10nF G_IN
Z18 C15 C16 R34
33pF NC/22pF 75
HZK7A
GND_A GND_A GND_A GND_A
FB3 0/1206/BEAD R37 100 C20 10nF B_IN
Z19 C24 C21 R38
33pF NC/22pF 75
HZK7A
These components need to close to SPV7100
GND_A GND_A GND_A GND_A
F_5V +5V_PC
D32
PC_HPD
MBRX0520
C366
PC_TXD C367
0.1uF 10uF/16V
PC_RXD
C543
GND_A GND_A
PC DDC
47pF
+5V_PC
D1
U1B +5V_DDC
2
GND_A PC_VS +5V_VGA
3 4 3
7 1
74HC14/SO14
SO14 NC/BAT54/54C +5V_DDC
R52 R53
10K 10K
+5V_DDC
U2
1 8
A0
VCC
U1D C31 2 7
A1 WP
PC_HS R58 33
9 8 3 6 VGA_SCL
A2 SCL
NC/1uF R59 33
7 4 5 VGA_SDA
GND SDA
74HC14/SO14
SO14
NC/24C08
DDC EDID Data
GND_A GND_A SOP 8Pin GND_A
+5V_PC
10K PC_AUDIO_L
U1E
11 10
10K PC_AUDIO_R C37
7
74HC14/SO14
SO14 0.1uF
R413 R414
6K8 6K8 U1F GND_A
13 12
7
74HC14/SO14
SO14
GND_A GND_A GND_A
4
HDTV1 Input
layout
C5
2 1
NC/22uF/16V
C8
L2
SCART1_G_IN
2 1
0
10uF/16V
C529 C11 C12 R31
Z17
NC/C 22pF NC/22pF 75
HZK7A
GND_A GND_A GND_A GND_A GND_A
layout
C17
2 1
NC/22uF/16V
L3 C18
SCART1_B_IN
2 1
0
10uF/16V
C530 C22 C23 R39
Z20
NC/C 22pF NC/22pF 75
HZK7A
J3
GND_A GND_A GND_A GND_A GND_A
10
9
8 layout
7 C25
6 2 1
5
NC/22uF/16V
4
C26
3 L4
2 SCART1_R_IN SCART1_R_IN 2 1
0
1
10uF/16V
C531 C28 C29 R48
KM04024C_Z Z21
NC/C 22pF NC/22pF 75
GND_A HZK7A
GND_A GND_A GND_A GND_A GND_A
R407 10K COMP1_AUDIO_L
R408 10K
C553 C554 R55 R56 R409 R410
NC/C NC/C 47K 47K 6K8 6K8
PC_SCL
PC_SDA
GND_A GND_A GND_A GND_A
PC_TXD
P(10) PC_TXD
PC_RXD
P(10) PC_RXD
PC_SCL
P(7) PC_SCL
PC_SDA
P(7) PC_SDA
R_IN
R_IN P(7)
G_IN
G_IN P(7)
B_IN
B_IN P(7)
PC_VS
PC_VS P(7)
PC_HS
PC_HS P(7)
PC_HPD
PC_HPD P(7)
PC_AUDIO_L
PC_AUDIO_L P(7)
PC_AUDIO_R
PC_AUDIO_R P(7)
Y 1_IN
Y1_IN P(7)
SOY1_IN
SOY1_IN P(7)
PB1_IN
PB1_IN P(7)
PR1_IN
PR1_IN P(7)
COMP1_AUDIO_L
COMP1_AUDIO_L P(7)
COMP1_AUDIO_R
COMP1_AUDIO_R P(7)
3
42
+5V_A
These components need
R28 10K Modify BOM of SOG application circuit
to close to SPV7100
Also add one path to bypass emitter follower
R29 100 C9 10nF Y 1_IN
Modified by Monlong 2K70425
+5V_A
R32
Q24
2
2SC2411
10K
SOY1_IN
R406 0 C356 0 R30 0 C10 1nF
C357 C358 C13 R435
R361
NC/680pF NC/330pF NC/10pF NC/10M
NC/470
+5V_A
GND_A
R35 10K GND_A GND_A GND_A GND_A
R36 100 C19 10nF PB1_IN
These components need
to close to SPV7100
R40
These components need to close to SPV7100
10K
+5V_A
R42 10K
R45 100 C27 10nF PR1_IN
R49
These components need to close to SPV7100
10K
COMP1_AUDIO_R
Add the voltage divider for audio input signals
Modified by Monlong 2K70425
F_5V +5V_A
FB34
FB/1206/19-ohm
C270
C271
0.1uF 10uF/16V
GND_A GND_A
7100 7300
CONA2_PIN7_CARD_AUDIO_L---->J2_PIN1
CONA2_PIN9_CARD_AUDIO_R---->J2_PIN4
--------------------------------------------------------------------
CONA4_PIN3_CARD_IR--------->J3_PIN3
TH-32/37LRT12
Main Board (3 of 15) Schematic Diagram
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