Panasonic TH 42PW4 Diagram
13 Block and Schematic Diagrams
13.1. Schematic Diagram Notes
Important Safety Notice
Components identified by mark have special characteristics important for safety.
When replacing any of these components, use only manufacture's specified parts.
Notes:
1. Resistor
All resistors are cabon 1/4W resistor, unless marked as follows:
Unit of resistance is OHM [W] (K=1,000, M=1,000,000).
: Nonflammable : Metal Oxide
: Solid : Metal Film
: Wire Wound : Fuse:
2. Capacitor
All capacitors are ceramic 50V capacitor, unless marked as follows:
Unit of capacitance is mF, unless otherwise noted.
: Temperature Compensation : Electrolytic
: Polyester : Bipolar
M
m T
: Metalized Polyester : Dipped Tantalum
: Polypropylene : Z-Type
3. Coil
Unit of inductance is mF, unless otherwise noted.
4. Test Point
: Test Point position
5. Earth Symbol
: Chassis Earth (Cold) : Line Earth (Hot)
6. Voltage Measurement
Voltage is measured by a DC voltmeter.
Conditions of the measurement are the following:
Power Source ................................................... AC 120V, 50/60Hz
Receiving Signal ............................................... Colour Bar signal (RF)
All customer's controls ...................................... Maximum positions
7. Number in red circle indicates waveform nember.
(See waveform pattern table.)
8. When arrow mark ( ) is found, connection is easily found from the direction of arrow
NP
+
-
Z
(US model)/AC220-240V,
50/60Hz (Except US)
9. Indicates the major signal flow. : Video Audio
10. This schematic diagram is the latest at the time of printing and subject to change without
notice.
69
Remarks:
1. The Power Circuit contains a circuit area which uses a separate power supply to isolate the
earth connection.
The circuit is defined by HOT and COLD indications in the schematic diagram. Take the
follwing precautions.
All circuits, except the Power Circuit, are cold.
Precautions
a. Do not touch the hot part or the hot and cold parts at the same time or you may
be shocked.
b. Do not short- circuit the hot and cold circuits or a fuse may blow and parts may
break.
c. Do not connect an instrument, such as an oscilloscope, to the hot and cold
circuits simultaneously or a fuse may blow.
Connect the earth of instruments to the earth connection of the circuit being
measured.
d. Make sure to disconnect the power plug before removing the chassis.
2. Following diodes are interchangeable.
MA150- MA162 (Replacement part)
69
13.2. Main Block (US model) Diagrams
OUT LINE
SS.R. SS.R. SS.R. SS.R. SS.R. SS.R.
SU
SD
FF
64
FF
64
FF
64
FF
48
FF
64
SC
C1
SC2
CONTROL
SUSTAIN
PULSES
SC23
PULSE
PULSE
SCAN
C14
C13
D13
D
SC21
D21
SC20
D20
J
J11
J10
DISCHARGE
CONTROL
MAIN MPU
D9
J9
AUDIO
AMP
AUDIO SW
PLASMA AI
I/P CONV.
RGB PROCESSOR
D8
J8
DVI
YUV/RGB SW
FORMAT
CONV.
Vda
D43
SYNC. SW
SYNC.
SEPARATOR
C2
C24
SUB-FIELD
PROCESSOR
SUB MPU
C23
D23
D5
P5
D7
P7
D35
J13
J14
H3
+
R
-
SPEAKER
TERMINAL
FF
64
FF
64
FF
48
C4
SS.R.
VOLTAGE
GENERATOR
FLOATING
GROUND
J2
H2
HZ
/HY
BUFFER
AV RGB
AUDIO IN
C43
SS.R. SS.R. SS.R. SS.R. SS.R. SS.R.
VIDEO/YUV
CONVERTE
BUFFER
V/Y
SW
AV /
S-VIDEO
C49
BUFFER
RGB/
COMPONENT
HD/VD
C48
C41
INFO.
ROM
Vda
J3
H3
HX
PC
RS232C
C35
C38
C31
C39
70
D5
D7
P
13.5V
P5
5V
SOS
STV 5V
P7
P23
15V
PROTECTOR
P2
VSUS
Vbk
SS.R.
VSUS
C22
Vda
SS
P1
SS1
SS2
SS48
ADDRESS
VOLTAGE
(VE)
ON/OFF
VSUS, Vbk
J13
J14
+15V
-15V
P13
5V
13.5V
15V
P14
5V
STB7V
STB5V
REMOTE
RECEIVE
V
DRIVE
VOLTAGE
GENERATOR
ON/OFF
POWER
LED
PRIMARY
SWITCH CIRCUIT
P9
Vda, +15V, -15V
-15V, 13.5V, 5V
PROCESS
VOLTAGE
GENERATOR
STAND BY
STB7V
STB5V
SUSTAIN
PULSE
P12
SS12
SS49
SS33
SS34
S
V34
INPUT - +
S34
POWER
SWITCH
70
C39
C34
C3
F
AC120V
C33
F9
LINE
FILTER
F1
H3
from J10
+
L
-
SPEAKER
TERMINAL
13.3. Main (Except US) Block Diagram
P7
P5
P6
FLOATING
GROUND
C13
D13
SS.R. SS.R. SS.R. SS.R. SS.R. SS.R.
SC
SC2
PLASMA AI
MAIN MPU
I/P CONV.
RGB PROCESSOR
FORMAT
CONV.
D
D43
D35
FF
64
SU
FF
48
FF
64
FF
64
VIDEO/YUV
CONVERTE
DIGITAL
RGB
INTERFACE
SYNC. SW
J
V/Y
SW
AUDIO SW
HX
C23
P
SS.R.
V
PC
RGB/
COMPONENT
AV /
S-VIDEO
AV RGB
AUDIO IN
REMOTE
RECEIVE
SS.R. SS.R.
SS.R. SS.R. SS.R. SS.R.
C49
C4
C3
C39
C41
R
SPEAKER
TERMINAL
-
+
J10
J11
CONTROL
PULSE
SD
FF
48
FF
64
FF
64
FF
64
C1
C48
C38
C43
C31
C2
C14
C24
Vda
Vda
DISCHARGE
CONTROL
SC20
SC21
D21
D20
SUSTAIN
PULSE
SCAN
PULSES
C35
HZ
/HY
RS232C
BUFFER
BUFFER
BUFFER
INFO.
ROM
HD/VD
J2
H3
J3
H2
J8
AUDIO
AMP
D8
J9
D9
SUB MPU
SYNC.
SEPARATOR
YUV/RGB SW
VOLTAGE
GENERATOR
SUB-FIELD
PROCESSOR
SOS
STV 5V
ON/OFF
J13
+15V
-15V
5V
J14
13.5V
15V
5V
STB7V
STB5V
13.5V
5V
SC23
D5
D7
OUT LINE
D23
SUSTAIN
VOLTAGE
PROTECTOR
POWER
FACTOR
CONTROL
P5
P7
PROCESS
VOLTAGE
RECTIFIER
P13
P14
71
P7
P3
P5
P8
P6
INPUT - +
SS.R.
D35
HX
C23
P
V
S
POWER
SWITCH
REMOTE
RECEIVE
POWER
LED
SS2
SS1
ADDRESS
VOLTAGE
(VE)
SUSTAIN
PULSE
ERASE
PULSE
SS48
SS49
SS33
C22
LINE
FILTER
F1
F9
F
SS
C3
C39
C34
C33
V34
L
SPEAKER
TERMINAL
-
+
Vda
from J10
AC220 -
240V
H3H3
STB7V
STB5V
SOS
STV 5V
ON/OFF
J13
+15V
-15V
5V
J14
13.5V
15V
5V
STB7V
STB5V
13.5V
5V
VSUS
VSUS
Vbk
15V
D5
D7
D23
SUSTAIN
VOLTAGE
PROTECTOR
SUSTAIN
VOLTAGE
CONTROL
15V
Vda
PROCESS
VOLTAGE
PROTECTOR
POWER
FACTOR
CONTROL
STAND BY
P1
P5
P7
PROCESS
VOLTAGE
CONTROL
P22
PRIMARY
CIRCUIT
P19
P9
P18
P15P16
P21
PROCESS
VOLTAGE
RECTIFIER
P2
P23
P13
P14
SS12
SS34
S34
SUSTAIN
VOLTAGE
RECTIFIER
P12
71
13.4. Power (US model) Block Diagram
AC IN
RL403
F1 1 5
F900
LINE
FILTER
F9 5 1
P9 5 1
RL401
F901
P
LINE
FILTER
LINE
FILTER
D401
D426
IC401
(DRIVE VOLTAGE OSCILLATOR)
4
DRV.REG
OSC
OSC
8.3V
DRIVE
+
-
IC426
DRV.REG
8.3V
DRIVE
+
+
+
IC427
3
+
AVR
2
2
5
1
1
2
5
START
O.V.P
+
-
R426
+
-
REG
T.S.D
4
START
REG
T.S.D
LATCH
18V
(PROCESS VOLTAGE OSCILLATOR)
O.V.P
LATCH
LINE
FILTER
D419
15V
+
IC403
3
1
OSC
2
17V
IC426
D435
T403
5
7
3
1
+
-
11
12
14
15
+
-
+
-
+
-
72
IC471
1
IC473
1
AVR
AVR
3
3
T401
4
5
6
8
9
3
1
1
2
3
4
8
9
6
7
D434
STB5V
2
STB5V
2
K
A
Q515 Q516
D409
18
17
16
13
12
15
14
11
10
+
IC462
R
12
13
14
15
18
19
K
A
Q461
-
R
+
-
+
-
Vda
(70V)
+
-
VCC
for
IC474
IC472
+
-
+15V
+
-
+
-15V
-
IC468
1
IC470
1
+
-
Q463 Q467
VSUS
IC472
AVR
3
AVR
3
K
Q485
(190V)
Q462
Q465
IC464
K
R
A
15V
vsus
7
+
1
2
2
4
9
+
2
POWER STOP SOS
5V
13.5V
IC465
A
R
Q469
IC474
VSUS
OVP
(170V)
Vda
+
14
+
Vbk
-
Q481
Q500
34
+
2
11
Q483
Vbk
+
13
C460
P1
TO SS1
2
3
VSUS
P2
TO SC2
1
VSUS
2
3
Vbk
P13
TO J13
1
+15V
3
-15V
5V
6
P23
TO SC23
1
UN 15V
2
P10
TO FAN
1
UN 15V
3
FAN SOS
5
5V
P5
TO D5
3
5V
1
13.5V
P14
TO J14
13.5V
1
STB7V
3
4
5V
6
15V
8
9
P7
1
2
4
5
6
7
8
P12
1
2
4
5
for J
STB5V
MICRO ON/OFF
TO D
RUSH ON/OFF
TV ON/OFF
STB5V
KILL SOS
FAN SOS
PS SOS
ALL OFF
Vda
UN 15V
POWER SW
for D
72
13.5. P-Board (US model) Schematic Diagrams
73
73
13.6. Power (Except US) Block Diagram
DRIVE VOLTAGE PROTECTOR
P3
D604
Q601
IC603
P16 SOS IN VCC
1
D606
Q600
8 VDA Vbk SOS 15Vs
IC601 -15Vs P2 To SC2
IC600 3
VSUS 15V VSUS 5V
AC IN
AC INLET 1 1
5
2
OSC
4
OVP 15V 11 1
7
TO FAN
F1 3
15
Q604
2
9
6
Q602
7
Q603
2
4
P15 Vbk 2
Q407
IC401
3
AVR
1
18V 12
Q405
6 1
Q406
Q408
IC602 4
F901 F900 13
Q417
LINE D446 VDA
Q416
3
IC402
AVR
1
T401
FILTER
START +
STOP
F RL402 D403 -
1 5 F9 P9 POWER FACTOR CONTROL TO SC23
3 L401 D412 D445 15V 1
RL401 3
1 -
FULL
WAVE
RECTIFIER
Q412
Q414
Q415
Q402
Q410
Q404
Q422/Q401
T402 5V
IC403
3
2
P19 4 11 9 5 1 P18
1
D419
D440 D439 D434 OSC.
7
PFC
+ +
3
- 110V PROTECTION
STOP STOP
118
IC735 IC650 D443 -
6
10
IC737
IC736
Q730
5
8
9
Q650
Q651
1
IC407
AVR
5
230V P6
PFC : Power Factor Control
STOP
STB 7V
STB 5V
MAIN POWER SWITCH ON/OFF -
74
DRIVE VOLTAGE PROTECTOR
PROCESS VOLTAGE PROTECTOR
Q407
Q408
T401
Q750
IC750
COMPARATOR
D751
Q775
Q776
IC775
COMPARATOR
P7 P8
8 54321 7 4321 6
P21
P22
13.5V
Vbk
Q465
VSUS
Q464
T400 P1 To SS1
+
IC464
2
VSUS
P10
UN 15V
FAN SOS
5V
1
P5
TO D5
3
Q419
1
5V
13.5V
Q420
IC412
P23
IC409
1 2
+
AVR
15V
D441 +15V To J13
+
+
For AUDIO 6
P13
1
3
+15V
-15V
5V
-15V
P14
D442
10
+
IC411
1 2
AVR
13.5V
D435
9
1
Q421
Q423
4
IC410
AVR
Q413
SOS
Q413
2
P5
STOP
K
R
A
D436
TO J14
4
5V
3
STB7V
1
13.5V
6
8
STB5V
9
P7
ON/OF
TO D7
2
TV ON/OFF
STB5V
5
KILL SOS
6
FAN SOS
7
PS SOS
8
ALL OFF
P12
S.MPU
TO SS12
1
+
Vda
2
15V
4
5
POWER SW
74
13.7. P1-Board (Except US) Schematic Diagrams
75
75
13.8. F and P3-Board (Except US) Schematic Diagram
76
76
13.9. P5, P6, P7 and P8-Board (Except US) Schematic diagram
77
77
13.10. HX and H Block Diagram
PC Terminal Board
PC AUDIO IN
R IN
L IN
PC IN
R IN
G IN
B I N
SCL
SDA
1
2
3
13
14
12
15
HX
IC3509
DDC
EEPROM
HX1
B
A
19
20
4
5
R OUT
L OUT
R OUT
G OUT
B OUT
HD OUT
VD OUT
SCL
SDA
Q3531
Q3532
Q3507
Q3508
Q3509
Q3513 / Q3514
Q3515 / Q3516
7
VCLK
20
18
16
12
14
6
5
RS-232C
TXD
RXD
12V
DTR
IC3515
3
2
6
4
13
14
12
11
7
8
10
9
10
9
8
7
6
12V
RXD-XC
TXD-XC
DCE-XC
DTE-XC
REMOTE OUT
78
Tuner Terminal Board
TUNER IN
R IN
L IN
G IN
B I N
R IN
HD IN
VD IN
TXD
21
H
7
8
1
2
3
4
5
Q3451
Q3453
Q3459
Q3456
Q3452
Q3454 / Q3455
Q3457 / Q3458
H2
B
11
13
19
17
15
9
A
R OUT
L OUT
G OUT
B OUT
R OUT
7
HD OUT
VD OUT
IC3451
13
12
15
RXD-XC
RXD
CABLE
DET.
REMOTE OUT
POWER
STATUS
19
6
25
24
This board is for TH-42PW4U only.
14
TERMINAL
BOARD
INFORMATION
11
IC3699
EEPROM
14
10
TXD-XC
CABLE
DET.
12
REMOTE
POWER
11
STATUS
SCL
20
19
SDA
6
5
78
13.11. HX-Board Schematic Diagrams
79
79
13.12. H-Board (Option TY-42TM4H) Schematic Diagram
TXN/H10JKS
80
80
13.13. HY and HZ Block Diagrams
y
(
)
HY (for TH-42PWD4 series)
for TH-42PW4 series
HZ
S-DET.
IC3804 GC1
AV
S-VIDEO
IN
VIDEO
IN
VIDEO
OUT
# 42PWD4
only
R IN
AUDIO IN
L IN
C
Y
Q3302
IC3301
6
7
5
S SELECT
1
3
4
Q3307
Q3505
Q3504
IC3302
+
Q3809
Q3810
SDA
SCL
C
62
Y
84
83
89
90
94
96
A/D
VCO
Q3301
Q3802
1
Q3306
Q3804
Q3801/Q3803/Q3805
Q3806/Q3807
LPF
Q3808
R IN
AUDIO IN
L IN
COMPONENT/RGB IN
Pb/B
Y/G
Pr/R
HD
VD
Q3505
Q3504
Q3351
Q3356
Q3357
Q3358
Q3359
Q3352
Q3353
81
IC3804 GC1
62
84
83
89
90
94
96
A/D
VCO
IC3803 for NTSC 3D COMB FILTER
16M SDRAM
2 ~ 12, 39 ~ 49 15 ~ 32
100 ~ 119
Memory Controllor
DIGITAL
COMB
FILTER
COLOUR
SYSTEM
PLL
120 ~ 138
3D
OUT
DET.
SYNC. DET.
SYNC.
SEPARATOR
Q3817
Y
Pb
Pr
H
PLL
184 161
PICTURE
IMPROVER
SYNC. PULSE
GENERATOR
V(50~120)
H(15K~ 45K)
D/A
8
H OUT FREE RUN
L: FREE RUN
H:LOCK
20
200
195
7
156
Y
Pb
Pr
Q3812
Q3813
Q3815
SYNC, BUFFER
6
4
5V
3.3V
STB5V
Q3501/Q3507
Q3502/Q3508
Q3503/Q3509
IC3809
14
16
H1
H2
B
B
A
TO J1
19V
5
9
13
TO J2
A
1
3
5
6
6
8
2
Y
Pb
Pr
HD
VD
S2 DET.
AUDIO L
AV
IC3501
12
DAC - IIC
EXPANDER
9
4
14
15
SCL
SDA
TERMINAL
BOARD
INFORMATION
IC3699
EEPROM
4
AUDIO R
19
20
AUDIO L
AUDIO R
B / Pb
G / Y
R / Pr
HD
VD
SCL3
SDA3
RGB/
COMPONENT
1
13
17
19
15
7
9
6
5
81
13.14. HY-Board (1 of 2) (Option TY-42TM4Y) Schematic Diagrams
82
82
13.15. HY-Board (2 of 2) (Option TY-42TM4Y) Schematic Diagrams
83
83
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