Arcam DiVA CD72 - Page 30

1 2 3 4 5 6 7 8
A
B
C
D
87654321
D
C
B
A
ISSUE
DRAWING NO.
23425
DRAWING TITLE
Drawn by:
DATE
Filename
ECO No. DESCRIPTION OF CHANGE
J:\FILES\L-ELECT\PCB complete packages\l900s\l912 New 2000 DAC\L912_2.0\L912_2.0.DDB - L912C7_2.0.SCH
A & R Cambridge Ltd.
Pembroke Avenue
Denny Industrial Centre
Waterbeach
Cambridge CB5 9PB
9 CD DAC PSU
Circuit Diagram
L912CT
CW
28-Jun-2001
INITIALS
Date Printed
6 8Sheet of
Notes:
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18 19 20 21 22 23
SK1
FFC23V
+
C37
470U EL 25V
+
C36
470U EL 25V
C75 10N SM
VCCD
VCCD
+13V
VCCA
-13V
RLYPWR
RLY_GND
VP18V
VN18V
VDIG
VCCD
RLYPWRRLY_GND
VDAC
VDDAC
VP13V
VN13V
VCCA
R40
10R SM
VN18
VN18
VP18
VRGND
IC62 ZRB500F01
R59 1K5 SM
R67
1K0 SM
+13V
R65 1K5 SM
R58 4K7 SM
TR16
BC847B
GO
REF
D5
BAV99W DUAL SM
D4
BAV99W DUAL SM
3
2
6
1
85
IC5A
OP27 SM
74
IC5B
OP27 SM
C15 100N SM
R34
1K5 SM
+13V
+8V9
-5V
-13V
P8V9
N5V
PSU for DAC references
TR17
BC849B
R66
10K SM
+13V
-5V
TR19
BC849B
R75
1K0 SM
R135
1K0 SM
R134 1K0 SM
TR30
BC849B
R136
1K5 SM
R133
1K5 SM
GAIN
HDCD 6dB Gain Shift
R141
100R SM
R146 1K0 SM
+5VCLK
TR7
2SA1964
R22
4K7 SM
R39
11K SM
R38 1K5 SM
TR6
BC849B
TR14
BC849B
TR4
BC859B
TR13
BC859B
TR5
2SC5248
R17
4K7 SM
R37
10K SM
R32 10K SM
+5VCLK
R155 1K0 SM
TR2
BC849B
R7
100R SM
R11
100R SM
TR3
BC859B
* Fit to HDCD version only
** Fit to DSP version only
*
*
*
*
*
*
*
*
*
*
*
LGAIN
+
C6
100U SILMIC
+
C7
100U SILMIC
HS1B
TO220_TV5
Heatsink HS1
Shared between
Q5 and Q7.
Vin
I
GND
G
Vout
O
IC35
7905
Vin
I
ADJ
A
Vout
O
IC36
LM317T
D2
8V2 1W SM
+13V
-13V
D1
3V9 0W5 SM
Not Fitted
Not Fitted
Not Fitted
Not Fitted
R31
100R FU
R33
100R FU
+
C165
10U EL
+
C2
100U EL
+
C4
100U EL
+
C12
100U EL
+
C21
100U EL
+
C28
22U SILMIC
+
C56
100U EL
+
C107
100U EL
+
C135
100U EL
C27
10U NP
L4
33UH 2A RA
VCCD
Vin
I
GND
Vout
O
IC10
LM1086 3.3V SM
+
C124
10U EL
C104
100N SM
+3V3
FLT1
7G002
C109
100N SM
C119
100N SM
+
C125
10U EL
C26
470P PP
C25
470P PP
C122
1N0 PP
C123
1N0 PP
C8
100N SM
C16
1N0 PP
C18
1N0 PP
C96
100N SM
C10
330P PP
C11
470P PP
C9
330P PP
C65
6N8 PP
C53
4N7 PP
C1
4N7 PP
GND1
GND2
GND3
R69
100R 0805
C141
100P NPO 0805
TR701
FMMT497
TR700
FMMT497
R700
10K 0805
R701
22K 0805
+
C700
10U EL
+13V
R168
220R SM
R169
2K7 SM
R170
2K7 SM
R44
6K8 SM
01_1078 CW 1-5-01 Production release 1.0
01_1084 1.1CW 30-4-01 Listening component changes
CW 9-6-01 2 0