Panasonic PT-VW431DU / PT-VW431DE / PT-VW431DEA (serv.man2) Service Manual ▷ View online
DIA-1
PT-VW431DU/PT-VW431DE/PT-VW431DEA
Schematic Diagram & Circuit Boards Diagram
Schematic Diagram
Circuit Boards Diagram
Circuit Boards Diagram
Models
PT-VW431DU
PT-VW431DE
PT-VW431DEA
Important Safety Notice
Components identificated by the International symbol ! have special characteristics important for safety.
When replacing any of these components, use only the manufacturer's specified parts.
n
COLD and HOT indications
The power circuit board contains a circuit area using a separate power supply to isolate the ground connection.
The circuits is defined by HOP and COLD indications in the schematic diagram. Take the precautions below.
This schematic diagram is the latest at the time of model production start and subject to change without notice.
n
Precautions
NEVER touch the HOT part or the HOT and COLD parts at the same time, or you may get an electric shock.
NEVER short-circuit the HOL and COLD circuits, or the fuse may blow and the parts may break.
NEVER connect an instrument such oscilloscope to the HOT and COLD circuit simultaneously, or the fuse may blow.
Connect the ground of instruments to the ground of the circuit being measured.
MAKE SURE to unplug the power cord from the power outlet before removing the chassis.
When ordering parts, please check the part number of the parts list.
DIA-2
Schematic Diagram & Circuit Boards Diagram
PT-VW431DU/PT-VW431DE/PT-VW431DEA
Pin description of diode, transistor and IC
A
K
C
B E
C2
C1
B1
B2
E
C
C
B
E
K
A
C
B
E
B2
B1
C1 C2
E
E
B
C
B2
B1
C1 C2
E
B2
B1
C1
C2
E1
E2
K
A A
A
K K
K
A
K
A
C
B
E
C
B
E
C
B
E
1
2
3
4
5
6
5
6
Index
1 2
N
Index
Index
1 2
N
2
1
3
(IN)
(OUT)
(GND)
2
1
4
2
3
1
Index
1
N
Index
1
N
Index
1
N
Index
1
N
Index
1
N
Index
1 N
2
1
3
1
2
3
2
1
3
GND
RESET
Vdd
5
3
D
G
S
D
G
S
K: Cathode
A: Anode
C: Collector
B: Base
E: Emitter
D: Drain
G: Gate
S: Source
L
Diode
L
Transistor/FET
L
IC
E1
C2
E2
C1
B2
B1
Index
●
Diode
●
Transistor/FET
●
IC
FET
DIA-3
SCH_KL4AC
COM
NO
NC
SW901
K0KACF000044
1
2
3
FN901
L6FCYYYH0168
FN902
L6FCYYYH0169
FN910
L6FAYYYH0248
FN904
L6FCYYYH0169
L6FAYYYH0247
FN909
1
2
J10EG085G
K8D
1
2
3
4
5
6
7
8
K1KY02BA0350
K8S
1
2
L6FCYYYH0179
FN908
CN02
1
5
K1KA05B00219
K8H
1
5
1
2
1
2
K1KA03BA0045
K9H
1
2
3
K1KA03BA0331
K9I
1
2
3
K1KA03BA0331
K9J
1
2
3
K29D_6
D0GA100JA028
R2902
K29D_8
K29D_7
REGND
F1J0J106A004
C2903
:F1J0J106A020
D0GA100JA028
R2904
REGND
K29D_2
D0GA101JA028
R2903
K29D_4
C1ZBZ0003761
IC8811
1
SDA
2
SCL
3
OS/ALERT
4
GND
5 A2
6 A1
7 A0
8 VDD
K1KA08BA0047
K29D
1
2
3
4
5
6
7
8
REGND
K29D_1
X
SC2091
1
2
F1G1C104A077
C8836
:F1G1C104A089
:F1G1C104A125
B3RAD0000196
A2901
1
2
3
D0GA470JA028
R2901
F1G1A105A047
C2901
REGND
REGND
F1G1H4710004
C2902
:F1G1H471A582
:F1G1H471A752
X
SC2092
1
2
K29D_3
K1KA30AA0009
K200
1
1
2
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
29
30 30
K1KA03BA0331
K9A
1
2
3
K1KA03BA0047
K9B
1
2
3
K1KA03BA0047
K9C
1
2
3
FN905
L6FCYYYH0117
K1KA03BA0047
K9E
1
2
3
FN903
L6FCYYYH0169
K1KA03BA0047
K9D
1
2
3
K1KA03BA0045
K9G
1
2
3
K1KA03BA0045
K9F
1
2
3
FN906
L6FCYYYH0179
FN907
L6FCYYYH0179
K1KA07BA0047
K8000
1
2
3
4
5
6
7
K1KA13AA0194
K6R
1
1
2
3
4
5
6
7
8
9
10
12
13 13
K1KA13BA0051
K8R
1
1
2
3
4
5
6
7
8
9
10
11
12
13 13
K1KA30AA0009
J10XE300G
K300
1
2
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
28
29
30
3.3V_13.3V_1
38
1
38
GND
1
S6V
S6V
S-7V
1
38
1
S16V
38
GND
1
K5R
K1MY40B0005
K1MY40B0005
GND
LAMP_DC_ON
MICRO SW
1
38
S16V
38
L5BDAYY00371
L5BDAYY00374
GND
POWER_SW
RXD_CO
RXD_EM
S5V
LAMP_SCI
TXD
RXD_CO
TXD
RXD_EM
S5V
LAMP_SCI
L5BDAYY00372
L5BDAYY00373
L5BDAYY00375
L5BDAYY00376
3.3V
S16V
5VSTB
1AA0ZPM0187--
K5G
K1MY40B0005
K1MY40B0005
K5B
K1MY40B0005
K1MY40B0005
FROM POWER
27
25
26
11
K5B113BG0002
SW902
K6A
1
2
K1KA02A00676
K6B
1
2
FUSE THRM
250V 10A113DO
K6C
K6D
1
2
1
2
1
2
3
4
5
6
7
8
9
1
2
13
14
15
16
A
B
C
D
E
F
G
H
I
J
K
L
A
B
C
D
E
F
G
H
I
J
K
L
KL4AC -01
POWER
MAIN
B
LCD
PANEL
R
LCD
PANEL
G
LCD
PANEL
IC8811
ADT75BRMZ
RC
ID CONNECT
TEMP SENSOR A
(ROOM)
LAMP ID
AV
LAMP
BALLAST
PROJECTION LENS
R-PNL
EXHAUST
SIDE
POWER
EXHAUST
EXHAUST
SIDE
LAMP
LAMP IN
PBS IN2
G-PNL(OUT)
G-PNL(IN)
PBS IN1
B-PNL(IN)
B-PNL(OUT)
IRIS
LP900
AC 1ST FILTER
AC 2ND FILTER
J10EG065G
K8I
1
2
3
4
5
6
K87B_2
J0JYC0000069
L8734
J0JYC0000069
L8733
J0JYC0000069
L8737
GND
K87A_3
K1KA06BA0047
K87A
J10EG065G
J10EG065G
1
2
3
4
5
6
D0YAR0000012
R8738
J0JYC0000069
L8731
GND
K87B_1
T_5V_ID
K87A_7
K87A_2
K87B_4
K1KY06AA0930
K87B
J10RR060G
4
5
6
1
2
3
K87B_6
K87A_6
K87B_5
K87B_3
T_12V_ID
J0JYC0000069
L8732
K87A_1
K87A_4
K87A_5
4
5
6
1
2
3
TO MAIN UNIT
TO LAMP1 ID UNIT
Schematic Diagrams
Indication of Signals
Power Failure, Fan Failure Detection Signals
- NO POWER when one of those signals detects a failure.
Power Drive, Fan Drive Signals
- NO POWER when one of those signals has a failure.
Switch Signals [AV switch, Mute, etc]
Switch Signals [AV switch, Mute, etc]
- NO PICTURE or NO SOUND when one of those signals
has
a failure.
CAUTION
Components indicated by a mark ! in this schematic diagram have the
special significance in the safety. It is therefore, particularly recommend-
ed that the replacement of those parts must be made by exactly the same
parts. Must be used with a specified fuse. Unauthorized substitutions may
result in fire or accident.
This projector is isolated from AC line by using the internal converter trans-
former. Please pay attention to the following notes in servicing.
1. Do not touch the part on hot side (primary circuit) or both parts on the hot
and cold sides (secondary circuit) at the same time.
2. Do not shorten the circuit between hot and cold sides.
3. The grounding lead must be connected to the ground of the same circuit
when measuring the voltages and waveform.
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