Arcam DiVA DV88, Service Manual

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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\01 1137 UPDATES TO L877PB\L877PB 4 ddb - Documents\L 77 4 0 sch
A & R Cambridge Ltd.
Pembroke Avenue
Denny Industrial Centre
Waterbeach
Cambridge CB5 9PB
DVD PSU PCB
Circuit Diagram
L877CT
KL
19-Sep-2001
INITIALS
Date Printed
1 1 Sheet of
Notes:
C1
3N3 MAINS
A_1 A_2
A_3
AC output to AV board for analogue power (non FMJ) AC mains for torroid
A_5
A_4
A_13
A_9
A_10
A_11
A_12
+12V_AV
+12V_DRV
Floating 4.3V supply for VFD
1
2
3
4
5
6
SK2
AMPCT6
DGND
-19V5
F1_4V3
F2_4V3
+5V
Front panel power
1
2
3
4
5
6
7
8
SK3
AMPCT8
A_14
A_16
A_17
DSP board power
DGND
+12V_DRV
+5V
A_15
1
2
3
4
5
6
7
8
SK4
AMPCT8
AV board power
DGND
+12V_AV
+5V
1
2
3
4
5
6
7
SK5
AMPCT7
DGND
+5V
+12V_DRV
Drive power
Drive power can come from here or via DSP board
SW2A
VOL SEL SLIDE SW2B
VOL SEL SLIDE
1
2
3
4
SK6
MOLEXPWR4
1
2
3
4
5
6
SK7
MOLEXPWR6
FIX2
FIXING HOLE
FIX3
FIXING HOLE FIX4
FIXING HOLE
FR4, 2 OZ Cu
PCB MATERIAL
DD1
FR4_2OZ
Photo Strip
PS
PHOTO_STRIP
FIX1
FIXING HOLE PD1
PAD200/3.5 PD3
TOOLING PD5
TOOLING
PD4
TOOLING PD6
TOOLING
VDR2
VDR 115V
VDR1
VDR 115V
F1_4V3
D7
UF4003
A_18
1
2
3
4
5
6
7
8
SK8
AMPCT8
A_19
Prog Scan Board
DGND
+12V_AV
+5V
R17
1K0 MF
R19
1K0 MF
SYNC
L
N E
N E L
SK1
IEC3
C2
3N3 MAINS
R9
15K MF
L4
33UH 2A RA
L2
33UH 2A RA
C6
100N PE C5
100N PE
L3
33UH 2A RA
+
C40
100U EL
DGND
-19V5
+3V3
SYNC
C27
100N PE
C23
100N PE
C38
100N PE C37
100N PE
C22
100N PE
DGND
DGND
DZ3
ZENER 5V1 400MW
R20
2K2 MF
F2_4V3
1
4 5
7
6
21T 21T
27T 6T 13T
2
3
8 10 11 9 12
SCR
TX2
L TX PQ32 470UH
R18
1K0 MF
L5
33UH 2A RA
C33
100N PE C32
100N PE DGND
+5V
+3V3
+5V
DGND
C29
100N PE
C35
100N PE
TR3
BD179 NPN TO-126
TR1
BD180 PNP TO-126
+ C8
47U EL 35V
+5V
DGND
PCB
PCB
L877PB_4
-38V_UR
DGND
+5V +5V +5V
DGND
DGND
M1
IRF640
+5V_NFB
HS1
TO220HS08TR
R12
22R MF
R13
1K0 MF
C18
470P CD
+5V_NFB
DGND
-38V_UR
-38V_UR -38V_UR
C16
100N PE
DZ2
10V 400MW
-38V_UR
DGND
R2
22K MF R3
15K MF
R4
1K0 MF
D3
1N4148
R15
1K0 MF
D4
UF5403
C10
1NF PE
C11
1NF PE
C19
1NF PE
C36
1NF PE
C30
1NF PE
C25
1NF PE
C14
4N7 PE
+3V3_NFB
R7
2K7 MF
+3V3_NFB
+3V3
+
C7
10U EL
-38V_UR
A_6
A_7
A_8
R21
2W CF
TR2
BC556B
+
C21
470U EL 25V
+
C24
470U EL 25V
+
C34
470U EL 25V
+
C28
470U EL 25V
C3
C AL YXF 105C 50V 1000UF C4
C AL YXF 105C 50V 1000UF
C39
C AL YXF 105C 16V 220UF
C31
C AL YXF 105C 16V 1000UF
C26
C AL YXF 105C 16V 1000UF
C20
C AL YXF 105C 35V 1000UF
F5
FUSE 500MA RADIAL
DZ1
20V 400MW
R5
9K1 MF
R16
5R6 1W CF
R6
6K8 MF
R11
1K CF 2W
VCC
16
GND
8
IC1C
IC 74HC221
A
1
B
2
CLR
3
Cext
14
Rext/Cext
15
Q
13
Q
4
IC1A
IC 74HC221
A
9
B
10
CLR
11
Cext
6
Rext/Cext
7
Q
5
Q
12
IC1B
IC 74HC221
C12
100P CD
R10
22R MF
R8
10K MF
C15
22N PE
C17
C AL YXF 105C 16V 220UF
C13
100N PE
C9
100N PE
R14
0R22 3W MO
D6
31DQ10
D5
31DQ10
COMP
1
VFB
2
ISEN
3
RT/CT
4
GND
5
OUT
6
VCC
7
VREF
8
IC2
IC PWM UC3843
R22
47R MF
NF
1
3
4
2
L1
CM_CHOKE
EMC Shield
SHLD1
EMCMAINS
1 Production Release 01/08/00 KL
DVD PSU
+
~
-
~
DBR1
DBR 2KBP02
D8
1N4003F
TO-220 SIL PAD
E903MC6
SP1
TO-220 SIL_PAD
EARTH LEAD
8M101
EL
EARTH LEAD
2.2 Added MS1 and SP1 15/09/00 KL 00_1084
R1
3K3 MF
F1
T315MA
F2
T315MA
15
1
115V
6
12
9
10
8
3
13V
13V
28V
16
115V
11
TX1
L852TX(PCB FITTED)
2.3 runout sheet re issue at 2.3 using NF 11/10/00 wf 00_1109
4.0 Added C41 & C42. SW1 now A1010. Deleted MS1 28/08/01 CL 01_1137
C41
3N3 MAINS
C42
3N3 MAINS
PD2
FIXING HOLE 3.5
SW1A
MAINS_SW A1010
SW1B
MAINS_SW A1010