Arcam DiVA DT81, Service Manual

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J:\ECO_wip\01_1106 new 1.7 roak module\L918_1.1\L918_1.1.DDB - L918C2_1.1.SCH
A & R Cambridge Ltd.
Pembroke Avenue
Denny Industrial Centre
Waterbeach
Cambridge CB5 9PB
DiVA DT81 DAB Tuner - Power Supplies & Muting
Circuit Diagram
L918C2
CL
11-Jun-2001
INITIALS
Date Printed
2 4 Sheet of
Notes:
F1
T160MA
+
C10
3M3 EL
Vin
I
ADJ
A
Vout
O
Z2 LM317T
D3
1N4003F
DAC
Supply
R18
3R3 FU
R19
3R3 FU
Vin
I
ADJ
A
Vout
O
Z3 LM317T
Vin
I
ADJ
A
Vout
O
Z5 LM337T
+
C21
100U EL
+ C22
100U EL
D4
1N4003F
D5
1N4003F
Vin
I
GND
G
Vout
O
Z7 7805
P15V
N15V
P10V
P5VDAB
P5V DAC
N L
SK4 IEC2
LIVE1 NEUT1
PUNREG1
NUNREG1
N15V
P15V
P2
P3
P5
AGND1
GND1
ACAUD1
ACAUD2
ACAUDG1
ACDIG1
ACDIG2
NEUT2
AC115V
AC230V
HS
HS2A TO220HS08REG
TP1
TEST_POINT
TP2
TEST_POINT
TP4
TEST_POINT
TP5
TEST_POINT
TP6
TEST_POINT
115V units only
230V units only
F2
T250MA115V
!
WARN
!
WARN
!
WARN
!
WARN
1
3
4
2
T2
CM_CHOKE
!
WARN
!
WARN
!
WARN
1
2
3
SW3A
A1014
4
5
6
SW3B
A1014
LIVE NEUT
LIVE2
NEUT2
+
C20
1M0 25V
P15V
D8
UF4003
D9
UF4003
D10
UF4003
D11
UF4003
D12
UF4003
D13
UF4003
D14
UF4003
D15
UF4003
115V
230V
R20
1R0 FU
R21
1R0 FU
PWR
1
IN1
2
IN2
3
0V
4
V-
5
O
6
FB
7
RC
8
V+
9
Z9
TA7317P
+
C34
1U0 EL
-UR
+UR
+
C23
100U EL
+
C35
1U0 EL
D16
UF4003
7
8
9
SW3C
A1014
RLY1C
RLY 51SB12T
D17
1N4148
P15V
MUTE1
Analogue and
Digital grounds
are joined at the
DAC, Z10
MUTE CIRCUIT
POWER SUPPLIES
+
C37
1M0 35V
+
C38
1M0 35V
+
C39
1M0 35V
+
C40
1M0 35V
+UR
Connect ground to chassis fixing
via decoupling capacitor C32.
+ C14
10U EL
P5V
FM Tuner Pass-through
Near to PCB
SK5A
JACK3.5X2
Far from PCB
SK5B
JACK3.5X2
D18
4V7 400MW
3
2
1
Z10A
LM393A SM
5
6
7
Z10B
LM393A SM
C41
680P PP
L1
27MH
8
4
Z10C
LM393A SM
P5V
QQ1
QPAD
QQ2
QPAD
QQ3
QPAD
QQ4
QPAD
QQ5
QPAD
P5V
REMOTE_BUS
10
11
12
SW3D
A1014
Vin
I
GND
G
Vout
O
Z8 7805
+ C28
100U EL
P7
P5V
+5V for DAB
+5V for micro
TP7
TEST_POINT
BYPASS
-UR
1
2
3
4
5
6
7
8
9
10
SK6
FFC10V
-UR
N15V
+UR
P15V
P7V5_UR
P5V
MUTE1
MUTE1
BP
ACAUD1
ACAUD2
ACDIG1
HS3A
TO220HS30REG
17
16
1
7
230V
115V
11
18
22
20
14
13
21
5
6
12
2
8
0V
19
15
23
24
18V
0V
18V
7V5
0V
12V
0V
T1
L848TX
ACDIG2
Vin
I
ADJ
A
Vout
O
Z1 LM317T
+ C11
10U EL
D2
1N4003F
DAB Module
10V
HS1A
TO220HS30REG
TP3
TEST_POINT
ACDIG3
ACDIG4
ACDIG3
ACDIG4
D6
UF4003
D7
UF4003
D19
UF4003
D20
UF4003
+ C29
3M3 EL
P8
P9
EMCGND
EMCGND
+
C27
220U EL
+
C24
220U EL
P7V5_UR
T1
T2
T3
T4
1
2
3
4
SK12
IDC4S
EMCGND
+
C12
100U EL
+
C13
100U EL
C62
1N0 PP
C63
1N0 PP
+ C26
220U EL
+
C25
22U EL
C33
10N SM
+ C19
100U EL
R62
1R0 FU
R72
1R0 FU
R73
1R0 FU
R74
1R0 FU
CHS2
REMIN1
REMIN2
CL 03/10/00 INITIAL PROTOTYPE A.0
R22
100R 1W CF
(NOT FITTED ON DT81, USES SWITCH ON DISPLAY BOARD)
1
2
3
SW2A
2PCO_NON_LAT
4
5
6
SW2B
2PCO_NON_LAT
STBYLED
CL 22/01/01 PROTOTYPE (NEW DAC & TOSLINK B.0
CL 19/03/01 PRODUCTION RELEASE 1.0
R77
10K 0805
R30
10K 0805
R71
10K 0805
R33
10K 0805
R29
47K 0805 R32
47K 0805 R31
47K 0805
R28
47K 0805
R34
47K 0805
R70
47K 0805
R25
100R 0805
R24
1K8 0805
R12
8K2 0805
R13
8K2 0805
R27
33K 0805
R76
22R 0805
R58
2K7 0805 0.1%
R41
1K0 0805
R42
1K0 0805
R44
4K7 0805
R3
10K 0805 R4
10K 0805 R6
10K 0805
R5
10K 0805
R53
1K8 0805
R52
1K8 0805
R51
1K5 0805 1%
R17
390R 0805
R56
220R 0805
R57
220R 0805
R54
2K4 0805 1%
R55
2K4 0805 1%
R43
1K0 0805
R16
330R 0805
R49
100K 0805
R50
100K 0805
R26
0R0 0805
C64
470P NPO 0805
C60
470P NPO 0805
C61
470P NPO 0805
C65
470P NPO 0805
C32
10N 0805
C59
10N 0805
C36
100P NPO 0805
C42
100P NPO 0805
C50
10N 0805
C55
470P NPO 0805
C51
10N 0805
C31
220N X2 CLASS
01_1076
PG 8/6/01 1.1 01_1106 ROKE MODULE V1.7 + changed R67 & R68