Qa (2/3) - Sony VPL-PX20 Service Manual

• Refer to page 9-5 for Printed Wiring Board
• Refer to page 9-9 for IC Block Diagrams
CN802
70P
R941
100
TO BB CN305
:CHIP
JL847 #
IRD A
A1
JL848 #
IRD B B1
R999
GND A2 100
R998 :CHIP
GND
B2 JL849 100
# :CHIP
DS2+ A3
R997
JL850
DS2+ B3 100
#
:CHIP
DS2-
A4
DS2- B4
JL851
#
YC/OTHER A5 YC/OTHER
CV/OTHER
B5 CV/OTHER
JL852
GND A6
#
GND B6
JL853
R/R-Y A7
#
R/R-Y
R/R-Y B7
GND A8
GND B8
JL854
G/Y A9
#
G/Y B9 G/Y
GND A10
JL855
GND B10
#
B/B-Y A11 B/B-Y
B/B-Y B11
GND A12
JL856
GND B12
#
H A13 BA H
H
B13
GND A14 (P2)
JL857
GND B14
#
V
A15 BA V
V B15
GND A16
JL858
GND
B16
#
RGBSYNC A17 RGBSYNC
RGBSYNC B17
GND
A18
GND B18
V-R
V-R A19
V-R
B19
(P1)
JL859
GND A20 #
GND B20
V-G
V-G
A21
V-G B21
JL860
#
GND A22
GND B22
V-B
V-B A23
V-B B23
JL861
#
GND A24
GND B24
(P1)
V-H
V-HD A25
JL862
V-HD B25 #
V-V
V-VD A26
V-VD B26
JL863
#
GND A27
GND
B27
V-CLP
V-CLP A28 (P1)
V-CLP B28
JL864
#
GND
A29 A (P1)
JL865
GND B29
#
SDA100K A30 SDA100K
SCL100K
B30 SCL100K
GND A31
JL866
#
GND B31
+6V
A32
+6V B32
+6V A33
(P1)
+6V
B33
+10V A34
-6V B34
+10V
A35
-6V B35
JL870
# JL867
#
JL868
#
JL869
#
FL803
EMI
VPL-PX20/PX30
A B
5V
IRD A
IRD B
(P1)
DS2+
C851
47
DS2-
6.3V
:ALB-CP R
R MON
R1000 C854
47k 0.1
:CHIP 25V
B:CHIP
(P1)
C852
47
6.3V
G
:ALB-CP
(P1)
G MON
R942
47k
C859
:CHIP
0.1
25V
B:CHIP
C853
47
6.3V
:ALB-CP B
B MON
R943
47k
:CHIP C864
-5V 9V 0.1
25V
B:CHIP
(P1)
C982
L805
10 10µH
16V :CHIP
:AL-CP
MON OUT OFF
SYNC SW1
SYNC SW2
SYNC SW3
R1012
#
C977
D822
4.7 R1007 5V
MA157-TX
16V 100
F:CHIP :CHIP
PROTECT
AH
R1013
C979 82k
4.7
:CHIP R1005
16V
100
F:CHIP :CHIP
BH
R966
C875
82k
D814 10
C978
:CHIP
22 MA157-TX 16V
R1001
16V :AL-CP
PROTECT 100
:ALB-CP
:CHIP
IC811
BV
TC74HC4052AFT
C981 R1010 SYNC SEP
D848
82k R1004
22
RD9.1SB2
16V :CHIP 100
:ALB-CP PROTECT :CHIP
BNC V 0
R1009
D847 0 0.2
82k
RD9.1SB2
:CHIP R1003
0 0
PROTECT 100
:CHIP
0 0
(P1) AV
R1008 D846 0 0
C806
(P1) 22 82k RD9.1SB2
16V :CHIP 0.2 0
PROTECT
:ALB-CP
0 0
C983
D823 0 5.0
10
MA157-TX
16V
PROTECT 5V :AL-CP
BNC H
R1006 R1002
C976
4.7 82k 100
R865
16V :CHIP C833 :CHIP
100
F:CHIP 0.1 5V
:CHIP
25V
B:CHIP
IC805
C835
GS1881-CTA
0.1
SYNC SEP
R864 C834 25V
1k 0.1 B:CHIP
:CHIP 25V
CS OUT VCC
B:CHIP
0.7 0.2
R863
ODD/
CV IN
1k
EVEN
:CHIP 1.5
VS OUT RESET
0 Q809
C831 C836
2SA1162 GND BACK PCH
56p 0.1
-5.0
CH:CHIP C BUFF 25V
B:CHIP
R866
C832
0.1 430k
25V :RN-CP
B:CHIP
IC817
IC816
PQ05SZ1U
5V BA09EP-E2
5V REG
FL801 9V REG
-5V
I O EMI I O
C953
G G
C952 68
10 10V
:AL-CP C951
16V
:AL-CP
C950
16V
10
16V :AL-CP
:AL-CP
C D

QA (2/3)

QA (2/3)
L802
R947 220 :RN-CP C869
10µH
10
:CHIP
16V
IC808 :AL-CP
MAX4223ESA
R DRV
0.4
NC
R944 SHDN
R956
0 5.0
10 150
VCC
:CHIP R :RN-CP
0 0
-5.0 0 C858
VEE NC 10
C855 16V
10 :AL-CP
16V R945
R946 C857 R957
:AL-CP 0
220 0.1 150
:CHIP
:RN-CP 25V :RN-CP
B:CHIP
C856 R951 220 :RN-CP
+5V
1p
CK:CHIP
IC809
MAX4223ESA
C863
G DRV
10
16V
0.4
:AL-CP
NC
SHDN
R948 R958
0 5.0
10 150
VCC
G
:CHIP :RN-CP
0 0
-5.0 0
NC
VEE
C862 R959
R949 R950 0.1 150
C861
0 220 R955 220 :RN-CP 25V :RN-CP
C860 1p
B:CHIP
:CHIP :RN-CP
10 CK:CHIP
16V
IC810
:AL-CP
MAX4223ESA
C868
B DRV
10
16V
0.4 :AL-CP
NC
SHDN
R952
0 5.0 R960
10
VCC 150
:CHIP B
0 0 :RN-CP
-5.0 0
VEE NC
C866
R961
1p R953 R954
C867 150
CK:CHIP 0 220
C865 0.1 :RN-CP
:RN-CP
:CHIP R962
10 25V
1k
16V B:CHIP
:CHIP
:AL-CP
C876
10
16V
C874
Q822 :AL-CP
+9V 0.1
2SC2712
25V
L804
B:CHIP PEAK HOLD
10µH
R973
:CHIP
47k
:CHIP IC812(2/2)
8.9
3.1
C984 TL082CPS
R971
10 R969 Q821 BUFF
R1011
R967 8.9 100k
16V 100 2SC2712
47
10k 3.6 :CHIP
:CHIP :AL-CP :CHIP BUFF 3
:CHIP
1
3.7
2
4.3
C878
3.7
1
3.6
:AL-CP
R968
R972
10k
82k
:CHIP
:CHIP
R974
R970 3.6
47k
470
:CHIP
:CHIP
0 0
D813 Q823 C877
DAN202K 2SA1162 10
PROTECT PEAK HOLD 16V
:AL-CP
C881
22
+9V
16V
C883
:AL-CP
10
Q825 16V
:AL-CP
2SC2712 R980
C879
82k
0.1 PEAK HOLD
25V :CHIP
C884
B:CHIP
R976 0.1
22k 8.9 0 25V
R981
:CHIP B:CHIP
Q824 150k
C880 3.7 3.7 8
22 2SC2712 :CHIP 8.9
R975 R978 8.9 5 3.7
16V
47 100 BUFF 7
:AL-CP
:CHIP :CHIP C885 6
1
0
:AL-CP 4
4.3
3.7
3.7
R977
IC812(1/2)
22k
:CHIP R979 TL082CPS
1k R982 BUFF
:CHIP 120k
:CHIP
3.7
R983
82k
4.2
:CHIP
0
D815
Q826
DAN202K
2SA1162
PROTECT
C882
PEAK HOLD
22
16V
:AL-CP
IC818 -5V
LM2990SX-5.0
9V FL802
EMI I O
G
C955
68
47 10V
:AL-CP
C954
10
16V
:AL-CP
9-7 9-7
E
VIDEO L
D824
D816
RD9.1SB2
MA157-TX
PROTECT
PROTECT
(P3)
VIDEO R
R OUT R
D825
C871 RD9.1SB2
330 R963
PROTECT
16V 47k
:AL-CP
:CHIP
D817
MA157-TX
PROTECT
G OUT G
R964
C872 47k
330
:CHIP
16V
:AL-CP
D818
MA157-TX
PROTECT
B OUT B
R965
C873
47k
330
:CHIP
16V
:AL-CP
D819
MA157-TX
PROTECT
+5V
OUT H
D820
MA157-TX
PROTECT
3.7
L803
10µH
:CHIP
C870
10
16V
:AL-CP R989 R991
R987
330 330
10
+5V 1/8W 1/8W
:CHIP
:CHIP :CHIP
R988
C887
330
47
1/8W
16V
:CHIP
:AL-CP
R990
IC814 47
:CHIP
SN75453BPS
BUFF
C888
8 7 6 5
R985 0.1
33 25V
:CHIP B:CHIP
IC813
C886
SN75157 1A VCC
0.1
0.2 4.9
25V COMP
1B 2B
R993
B:CHIP
1Y 2A
:CHIP
0 0
1 2 3 4 GND 2Y
0
R994
R984
47
33
:CHIP
:CHIP
BA H
(P2)
BA V
R995
47
:CHIP
RE H
(P1)
RE V
QA(2/3)
(INPUT SW)
F G
1
CN807
4P
C896
WHT-L
4.7
35V L808 JL871
TO QD CN1902
:AL-CP OUH #
1 L-VIDEO
R1015 JL872
2 GND
470k #
:CHIP
R-VIDEO
3
4 GND
C897
4.7
S-SEL
35V L809
:AL-CP OUH
R1016
JL875
470k
#
:CHIP
2
CN806
50P
WHT
JL903
TO QC CN1805
#
AUDIO OL A1 AUDIO OL
B1 AUDIO OL
A2 AUDIO OL
B2 AUDIO OL
GND
(P3) A3
B3 GND
A4 GND
JL904
GND
B4
#
AUDIO OR A5 AUDIO OR
B5 AUDIO OR
AUDIO OR
A6
B6 AUDIO OR
A7 GND
GND
B7
A8 GND
JL878
B8 GND
#
OUT R
A9
B9 OUT R
3
A10 OUT R
OUT R
OUT R
B10
A11 GND
B11 GND
A12 GND
JL879
B12 GND
#
A13 OUT G
B13 OUT G
A14 OUT G
OUT G
B14 OUT G
A15 GND
R992
330
B15 GND
1/8W
:CHIP
A16 GND
JL880
B16 GND
#
OUT B
A17
B17 OUT B
A18 OUT B
OUT B
OUT B
B18
A19 GND
B19 GND
4
GND
A20
JL881
B20 GND
#
47
A21 OUT H
OUT H
B21
A22 OUT H
OUT H
B22 OUT H
GND
A23
B23 GND
JL882
#
A24 OUT V
OUT V
B24
A25 OUT V
OUT V
B25 OUT V
JL883
#
5
B-SS1696<08.>-QA.-P2
H