Service Manuals, User Guides, Schematic Diagrams or docs for : panasonic Plasma TV TH-42PWD4 scd_a4
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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
NP
M : Polyester : Bipolar
m : Metalized Polyester T : Dipped Tantalum
: Polypropylene Z : 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
(US model)/AC220-240V,
50/60Hz (Except US)
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
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.
C2
C14
Vda
C24
C1
C13 C23
D13 D23
SC SC2 SC23 D
SU
SC21 SC20
D21
D5
P5
FF DISCHARGE SUB-FIELD
PLASMA AI
64 D20 CONTROL PROCESSOR
FF
64
D7
P7
I/P CONV. FORMAT
MAIN MPU RGB PROCESSOR
CONTROL CONV.
PULSE
FF D9 D8 D43 D35
64
J9 J8
FF SUSTAIN J
48 PULSE
J13
J11
SYNC. SW
SD AUDIO DVI SYNC.
SCAN AMP SEPARATOR SUB MPU
J14
FF PULSES
J10
64 YUV/RGB SW
AUDIO SW
J2 J3
FF H2 H3
VOLTAGE
64
GENERATOR HZ VIDEO/YUV HX
/HY CONVERTE INFO.
ROM
FF BUFFER BUFFER BUFFER
64 FLOATING
GROUND V/Y
SW
FF
48
AV RGB AV / RGB/ HD/VD PC RS232C
AUDIO IN S-VIDEO COMPONENT
C43 C49 C35 C39
C4
C38
C48
C31
C41
Vda
H3
+
R
- SS.R. SS.R. SS.R. SS.R. SS.R.
SPEAKER
TERMINAL
70
S.R. SS.R. SS.R. SS.R.
C22
23
Vda
23 P23 P2 SS2
P SS
15V VSUS SS48
Vbk
13.5V
D5
P5
5V VSUS
SS1
P1
ADDRESS
SOS VOLTAGE
PROTECTOR (VE)
D7
P7
STV 5V
ON/OFF Vda, +15V, -15V
5 VSUS, Vbk -15V, 13.5V, 5V SUSTAIN
PULSE
DRIVE PROCESS
+15V VOLTAGE VOLTAGE
P13
J13
-15V GENERATOR GENERATOR
5V
13.5V
SS12
P12
U 15V ON/OFF
P14
J14
PRIMARY
5V STAND BY
SWITCH CIRCUIT
STB7V
STB5V STB7V SS49
STB5V
SS33 SS34
P9
HX
REMOTE POWER
RECEIVE LED
V
S
S34
V34
C INPUT - +
POWER
SWITCH
F
C39 C34 AC120V
C3
F9
LINE
F1
C33
FILTER
H3
from J10 +
L
SS.R. SS.R. SS.R. -
SPEAKER
TERMINAL
70
13.3. Main (Except US) Block Diagram
OUT LINE
SS.R. SS.R. SS.R. SS.R.
C2
C14
Vda
C24
C1
C13 C23
D13 D23
SC SC2 SC23 D
SU
SC21 SC20
D21
D5
DISCHARGE SUB-FIELD
FF PLASMA AI
CONTROL PROCESSOR
64
D20
FF
D7
I/P CONV. FORMAT
64 MAIN MPU
CONTROL RGB PROCESSOR CONV.
PULSE
D9 D8 D43 D35
FF
64
J9 J8
SUSTAIN J
FF PULSE
J13
48
J11
SYNC. SW
DIGITAL
SD AUDIO RGB SYNC.
SCAN AMP INTERFACE SEPARATOR SUB MPU
J14
PULSES
J10
FF YUV/RGB SW
64 AUDIO SW
J2 J3
H2 H3
FF VOLTAGE
64 HZ HX
GENERATOR VIDEO/YUV
/HY INFO.
CONVERTE
ROM
BUFFER BUFFER BUFFER
FF FLOATING
64 GROUND V/Y
SW
FF
48 AV RGB RGB/ HD/VD PC
AV / RS232C
AUDIO IN S-VIDEO COMPONENT
C43 C49 C35 C39
C4
C38
C48
C31
C41
Vda
H3
+
R
- SS.R. SS.R. SS.R. SS.R.
SPEAKER
TERMINAL
71
SS.R. SS.R. SS.R. SS.R.
2
C22
C23
Vda
D23 P23 P2 SS2
P SS
15V VSUS SS48
13.5V
Vbk
5V P7
D5
D
P5
SUSTAIN
P21
OR
VOLTAGE SUSTAIN VSUS
VOLTAGE
SS1
PROTECTOR
P1
RECTIFIER ADDRESS
VOLTAGE
SOS (VE)
P3
D7
P7
STV 5V
P15
ON/OFF PROCESS SUSTAIN
VOLTAGE VOLTAGE
P16
D35 RECTIFIER CONTROL SUSTAIN
PULSE
P5
P8
+15V PROCESS
P18
PROCESS
P22
-15V VOLTAGE
P13
ERASE
J13
CONTROL VOLTAGE
5V PULSE
PROTECTOR
P6
15V
SS12
P12
UB MPU Vda
P14
POWER
J14
13.5V PRIMARY
P19
FACTOR STAND BY
15V CIRCUIT
CONTROL
5V SS49
STB7V STB7V
STB5V STB5V SS33 SS34
P9
HX
REMOTE POWER
RECEIVE LED
V
S
S34
V34
RS232C INPUT - +
POWER
SWITCH
F
AC220 -
35 C39 C34 240V
C3
F9
LINE
F1
C33
FILTER
H3
from J10 +
L
SS.R. SS.R. SS.R. -
SPEAKER
TERMINAL
71
13.4. Power (US model) Block Diagram
AC IN P
IC401
(DRIVE VOLTAGE OSCILLATOR)
4
DRV.REG 3
D401 8.3V
START O.V.P
DRIVE
LINE REG LATCH
F1 1 5 FILTER +
- T.S.D + 1
F900
F901 OSC
+ 2
LINE 5
FILTER
18V
F9 5 1
P9 5 1
IC427
3 AVR 1
RL403 +
- 2
R426
IC426
(PROCESS VOLTAGE OSCILLATOR)
RL401 4
DRV.REG 3
D426 8.3V
START O.V.P
DRIVE
LINE REG LATCH
FILTER +
- T.S.D + 1
OSC
+ 2
5
15V IC426 +
-
D419
T403
LINE
+ 5
FILTER 11
-
IC403 7 12
3
OSC 1 3 14
2
15
1 +
-
D435
+ +
- -
17V
72
P1
TO SS1
T401 VSUS (190V)
5 12 2
+
- IC474 3 VSUS
6
13 4 3
VSUS
P2
14 OVP + TO SC2
8 2 1
2 VSUS
15 (170V)
9 VCC Q462 3 Vbk
Q465 +
for
18 -
IC474 IC464
3 IC472 K
19 Vbk
+ R Vbk
1 - 11
A
+
D409
13
P13
15V TO J13
1 +15V
Vda 3 -15V
K vsus
7 4 9
R 6 5V
+ + +
P23
A TO SC23
1 2 14 1
IC472 2 UN 15V
1 18 +15V
+ POWER STOP SOS
-
2 17
+
3 16 - -15V
P10
TO FAN
4 1
13 UN 15V
IC468 3
8 5V FAN SOS
12 1 AVR 2 5
9 + 5V
3
-
P5
6 15 TO D5
IC470
13.5V 3 5V
7 14 1 AVR 2 1
+ + 13.5V
- 3
- IC465
11 TO J14
P14
Q461 Q463 Q467 K A
1 13.5V
10 R 3 STB7V
+
4 5V
-
6 15V
D434
8 STB5V for J
9
MICRO ON/OFF
IC462 Vda
P7
K TO D
1 RUSH ON/OFF
R (70V) 2
IC471 STB5V TV ON/OFF
A 4 STB5V for D
1 AVR
2 Q483 5 KILL SOS
3 Q481 6 FAN SOS
7 PS SOS
Q500 8 ALL OFF
IC473 STB5V
P12
1 AVR C460
2
3 4 1 Vda
2 UN 15V
Q515 Q516
4
5
POWER SW
Q469
Q485
72
13.5. P-Board (US model) Schematic Diagrams
73
73
13.6. Power (Except US) Block Diagram
P3
P16 SOS IN
D604 Q601 1
IC603
VSUS
D606 Q600 8
IC601
IC600
AC IN P15
AC INLET 5 2 Q602 1 Q407
7
OSC Q603
4 IC401
OVP 15V 11 3
AVR 1
7
2 18V 12
Q604 2 6
Q405
4 6 Q408
9 Q406
5 1 F1
IC602
F901 F900 13
3 IC402 1
Q417 AVR
LINE Q416 T401
FILTER
STOP START
F RL402 D403
1 5 F9 P9 POWER FACTOR CONTROL
3 L401 D412
RL401 FULL
WAVE
1 RECTIFIER
Q402
Q410
Q404
Q422/Q401
D419 STOP STOP
T402
IC403
3 2 P19 8 4 11 9 5 1 10 P1
1
IC735 IC650
6
7
D440 D439 D434 IC737 OSC.
PFC IC736
3 5 Q730 8 9
+ +
- - Q650
Q651
110V PROTECTION
1
Q412 Q415 IC407 S
230V P6
AVR
5 PFC : Power Factor Control
Q414
STB 7V
STB 5V
MAIN POWER SWITCH ON/OFF
74
DRIVE VOLTAGE PROTECTOR PROCESS VOLTAGE PROTECTOR
IC750
Q775 IC775
Q750 D751 VCC
COMPARATOR Q776 COMPARATOR
P7 P8
P21 8 5 4 3 2 1 P22 7 4 3 2 1 6
13.5V
15V VSUS 5V
VDA Vbk SOS 15Vs
-15Vs P2 To SC2
3 Vbk
Q465 Vbk 2
VSUS
Q407 1
Q464
IC464
T400 P1 To SS1
1
VSUS
2
+
P10 TO FAN
Q408 1 UN 15V
3 FAN SOS
4 5V
C402
1
AVR
TO D5
P5
T401 D446 VDA 3 5V
Q419 1 13.5V
+ Q420
- IC412
P23 TO SC23
D445 15V 1
IC409
1 2 3 15V
+ AVR
-
D441 +15V P13 To J13
+ 1 +15V
3 -15V
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