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DIA-14
PT-VW350 / PT-VX420/ PT-VX421
4. Circuit Boards Diagram
PbF
A1
A1
A2
A2
A4
A3
Reflow side
TNPA5903-1A
A3
A3
A4
K30A
K30B
K30C
K50A
SCB01
SCB03
K20B
K20A
R018
R2090
R2091
R2092
R2093
C3061
R022
R023
R031
R032 R033
R034
R035
C001
C002
C005
C006
C007
C008
C009
C010
C011
C020
C021
1
2
29
30
K300
D001
D002
C5021
C5022
C5023
Q5020
C5024
Q5021
L2001
L2002
C5027
L2003
C5028
L2004
R5001
C5029
R5002
R5003
R5004
R5005
R5006
R5007
C5030
17
24
1
8
9
16
IC5001
C5031
1
8
9
16
IC5002
C5032
8
5
1
IC5003
4
C5033
Q5030
C5034
Q5031
C5035
Q5032
C5036
Q5033
C5037
R5010
C5038
R5011
Q5035
C5039
R5012
Q5036
R5013
Q5037
R5014
1
14
28
15
IC001
1
3
K8F
R5017
R5018
C5040
R5019
C5042
C5043
C5044
D5021
C5046
C5047
C5048
R5021
C5049
R502
2
R502
3
R502
4
R5025
R502
6
R502
7
R5028
C5050
R502
9
C5051
C5052
C5053
R560
5
C5054
R5604
C5055
R560
9
R5030
C5058
C5059
R5033
R5034
R5610
R503
5
R5611
R5036
R5617
R5037
R5613
C5060
R5614
R5039
C5061
R5615
C5062
R5616
C5063
Q5060
Q5061
C5066
Q5062
Q5067
R5040
Q5064
R5041
C5069
Q5065
R504
2
Q5066
R504
3
R5046
R5047
R5048
R504
9
C5075
C5076
R5050
R5051
R5055
R506
0
R5061
R5062
R5063
R5064
R5065
R506
6
R5067
R5068
R5071
R507
3
R5075
R5078
R508
0
R2001
R2002
X5001
R2008 R2009
C2051
C2052
L003
C3001
L011
L012
Q031
C3011
C2072
C2073
C2074
Q2071
C2075
Q2072
C2076
Q2073
C2077
C2078
Q2075
C2079
C3021
C3031
L5603
D2074
R2071
R2072
R2073
R2074
R2076
R2077
R2078
R2079
R001
R002
R003
R004
R006
R2080
R2081
R009
R3022
R2082
R3023
R2083
R208
4
R2085
R2086
R2087
R010
R2088
R011
C3051
R2089
R012
R014
R015
R016
R017
PbF
7CAUTION
This projector is isolated from AC line by using the internal converter transformer.
Please pay attention to the following notes in servicing
1. Do not touch the part on hot side (primary circuit) or both parts on hot and cold sides (sec-
Please pay attention to the following notes in servicing
1. Do not touch the part on hot side (primary circuit) or both parts on hot and cold sides (sec-
ondary 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
3. The grounding lead must be connected to the ground of the same circuit when measuring
of voltages and waveforms.
J-P.C.B (SIDE:A)
LAMP ID
C-P.C.B (SIDE:A)
C-P.C.B (SIDE:B)
PbF
TNPA5904
1
C
???***
2
6
1
5
K87B
L8731
L8732
L8733
R8738
1
4
K87A
PbF
PbF
TNPA5904
1
C
PbF
PbF
TNPA5903-1A
K30A
K30B
K30C
K50A
K20B
K20A
R3031
R020
R021
R3051
R3061
R3063
R3064
C018
C019
C040
C041
C500
1
C5002
SC2001
SCB02
C5020
SCB04
SC2011
C5025
C5026
SC2021
R2516
C504
5
R2526
R5020
R560
6
SC2051
SC205
2
SC3001
SC2061
SC206
2
SC206
3
SC3011
R506
9
SC3021
SC3031
SC3051
SC3061
R2011
R2012
R2013
R2014
R2015
R2025
R2051
R2052
R3001
R3011
R005
L5611
R3021
R013
PbF
J-P.C.B (SIDE:B)
A-P.C.B
“K20”
SP
PbF
TNPA5906
1
R
***??
?
A2901
1
3
K29D
PbF
PbF
TNPA5902
1
M2
1
2
K02
PTH803
PbF
PbF
TNPA5906
R
1
***???
A2901
3
1
K29D
C2901
R2901
C2902
R2903
C2903
PbF
PbF
1
M2
TNPA5902
??? **
*
PbF
R-P.C.B (SIDE:A)
M2-P.C.B (SIDE:A)
R-P.C.B (SIDE:B)
M2-P.C.B (SIDE:B)
A-P.C.B
“K8D”
A-P.C.B
“K8L”
A-P.C.B
“K8I”
PbF
TNPA5901
M1
1
???***
PTH01
1
2
K01
PbF
PbF
TNPA5901
1
M1
???***
PTH01
PbF
M1-P.C.B (SIDE:A)
M1-P.C.B (SIDE:B)
A-P.C.B
“K8G”
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