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1
2
3
4
5
6
7
8
A
B
C
D
8
7
6
5
4
3
2
1
D
C
B
A
ISSUE
DRAWING NO.
23425
DRAWING TITLE
Drawn by:
DATE
Filename
ECO No.
DESCRIPTION OF CHANGE
J:\Change Control\ECO AGENDA\02 E000 L878 cap voltage correction\L878 3.3A.ddb - Documents\L878C7 3.3A.sch
A & R Cambridge Ltd.
Pembroke Avenue
Denny Industrial Centre
Waterbeach
Cambridge CB5 9PB
DVD AV PCB - Video (2)
Circuit Diagram
L878C7
PG
7-Jan-2002
INITIALS
Date Printed
7
7
Sheet
of
Notes:
EMC
1
N
F
SK7A
PHONO4G
N
F
SK7B
PHONO4G
Composite
Y
Cb
Cr
VID_GND
VID_GND
S-VIDEO OUTPUT
1
3
5
7
9
11
13
15
17
19
21
2
4
6
8
10
12
14
16
18
20
SK9
SCART
VID_GND
SCART_L
SCART R
SVID_YOUT
SVID_COUT
Q_42 QPAD
Q_43 QPAD
Q_44
QPAD
CVBS_OUT
U/BOUT
V/ROUT
Y/GOUT
Q_45 QPAD
Q_46 QPAD
Q_47 QPAD
Q_48 QPAD
Q_49
QPAD
Q_50
QPAD
Q_51
QPAD
Q_52
QPAD
SCART A/V OUTPUT
Q5
BC847B
VID_GND
ENABLE_AV
+5V_VID
VID_GND
Q11
BC859B
+12V
Q12
BC847B
VID_GND
VID_GND
16/9
0/6/12
AV_CTL
Q_53
QPAD
Q_54
QPAD
Q_55
QPAD
Q_56
QPAD
SCART_CVBS
V/ROUT
Y/GOUT
U/BOUT
0/6/12: 0V=OFF, 6V=16 9, 12V=4:3
AV_CTL: 0V=OFF, 5V=ENABLED
Q_57
QPAD
Q_58
QPAD
Q_59
QPAD
SPDIF_R
1
4
8
5
2
6
T1
TX_29398
EMC
SK10
PHONO1G
Q_60
QPAD
Q_61
QPAD
COAX OUTPUT
+
C24
10U EL SM
+5V
Gnd
1
Radj
2
Vcc
3
Vin
4
GND
Z25
TOTX173
OPTICAL OUTPUT
+5V
Q8
DTRANN SM
Q9
DTRANN SM
SCART_CVBS
VIDEO (2)
C101
100N 0805
L21
7F004
C102
100N 0805
2
3
1
Z26A
74VHC125 SM
5
6
4
Z26B
74VHC125 SM
9
8
10
Z26C
74VHC125 SM
12
11
13
Z26D
74VHC125 SM
14
7
Z26E
74VHC125 SM
R7
1K0 0805
R8
1K0 0805
R11
1K0 0805
R71
100R 0805
R69
100R 0805
R70
100R 0805
R39
10K 0805
R68
100R 0805
R117
4K7 0805
R65
3K3 0805
R115
22K 0805
R116
22K 0805
R43
8K2 0805
R76
390R 0805
R122
75R 0805
L25
7F004
C4
100N 0805
V/ROUT
U/BOUT
Y/GOUT
NF
C130
47P NPO 0805
C131
47P NPO 0805
C135
47P NPO 0805
C134
47P NPO 0805
C133
47P NPO 0805
C132
47P NPO 0805
C105
47P NPO 0805
C106
47P NPO 0805
C2
47P NPO 0805
C67
47P NPO 0805
C68
47P NPO 0805
C71
47P NPO 0805
C74
47P NPO 0805
C75
47P NPO 0805
C52
1N 0805
C51
1N 0805
C53
1N 0805
C125
470P NPO 0805
C17
1N 0805
EMCGND
EMCGND
C18
1N 0805
EMCGND
EMCGND
EMCGND
EMCGND
A1
A5
A2
A3
A4
Y
C
N
SK8
SVHS1V UNSCR
EMC Shield
1
2
3
4
5
6
7
8
SH1
E857MC
R118
6K8 0805
R119
120K 0805
Value changes for iss 1.1: R7,R8,R11=1K, R65=3K3 (was NF)
00_1136
PG
24/11/00 Issue 3 PCB with 8740 DACs
3.0
01_1000
PG
02/01/01 Change R9,R10 from 100R to 22R
3.1
01_1047
PG
15-03-01 Diodes changed from 3B22D to 3BS1D
3.2
PG
13/11/01
C155 changed to 100R
3.3
02_E000
PG
07/01/02
Admin change - cap voltages corrected on BOM
3.3A
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