Arcam Diva DT-81 Service manual

Service Manual

ARCAM

DiVA DT81
Digital Radio Tuner

DT81

Issue 1.0

ARCAM

Contents List

!

Contents list

!

Circuit description

!

Service guide

!

Circuit diagrams

!

Component overlays

!

Circuit board parts list

!

General assembly parts list

DT81 Circuit Description

Summary

The L918 forms the basis of the DT81 DAB tuner. All the circuitry
of the tuner is on the same board, with the exception of the front
panel PCB.
The tuner is based on the Roke Manor gold card which provides the
RF receiver and DAB decoding. To accompany this module the DAB
motherboard has various power supplies, a Hitachi H8
microcontroller, a D- A converter with output bu ffer, and an SPDIF
transmitter.

Power supplies and muting

The mains transformer T1 is used for 230V and 115V operation, the
voltage selection is done by fitting different fuses. F1 160mA is
fitted for 230V and F2 250mA for 115V.
The front panel board is powered from the 7.5V unregulated supply
(it has its own regulator). The digital supplies are switched by SW3,
while the an alogue supplies are on all the t ime while the mains is
connected.

Regulated supplies

P15V, N15V. +/-15V for the output buffer and DAC 5V regulator.
P5VDAC. +5V supply for DAC.
P5VDAB. 5V supply for DAB module.
P5V. +5V supply for digital circuits - Micro and SPDIF transmitter.
P10V. +10V supply for DAB module.
P7V5_UR. Unregulated 7.5V supply goes to front panel.

Z9 is a Toshiba TA7317. This controls the muting/bypass relay. The
same relay is used for power on/off muting and also FM tuner bypass
mode.
The muting circu it has a time constant of 2.5 seconds, s o there is
always a 2.5 second delay when un-muting the output.
The FM tuner bypass switch is shown on this sheet (SW2) and is
accessed from the front of the unit.

Micro, DAB module, SPDIF

Z204 is a Hitachi H8/3 048F 16 bit microcontroller. It has FLASH
program memory, and is programmed via header SK1. Z202 is a
64kbit parallel EEPROM used for storing multiplex data. this is
where the s ystem stores d ata about th e multiplexes it finds when it
does a search, and other i nformati on (presets, comp ression level, sort
type, display mode).
Z205 is a 3 pin reset generator IC. SW1 is a latching push switch
accessed from the rear of the unit. If the switch is pushed in,
RDI_ON will be low. This has the effect of removing data services
from the list of services. If the switch is left out, RDI_ON will be
high and the data services can be seen.
SK3 is used to connect to the front panel, communication is done via
the I2C bus. Power for the front panel comes in the form of
P7V5_UR. Note that although P5V connects to the front panel, it is
not used for power. Its purpose is to light the front panel LED green.
DAB module: JP1 is a 50 way SAMTEC connector which provides
the interface to the Roke DAB module. All the I/O to the module is
on this conn ector a part from t he a erial i npu t whic h ha s a cab le goin g
straight from the rear panel to the module.
Communication between the micro and the DAB module is done via
the serial port of eac h device on TX_DAB/RX_DAB.
The digital audio output from the module comprise of MCLK
(12.288MHz mast er clock), LRCK (48kHz left/right clock), SCLK
(serial data clock) and SDATA (serial data).
These signals go to the D-A converter, and also to the SPDIF
transmitter Z201.

Z201 is the SPDIF transmitter. Each one of the differential ouputs is
used separately. SPDIF_OP is for the opt ical output, SPDIF_CX is
for the coax output.

DAC

Z101 is a CS4327 D-A converter, followed by filter/buffer Z102.
This is followed by ac coupling capacitors. The relay RLY1 is the
last stage before the phono output connectors. 2 stereo outputs are
provided on SK101. SK102 is an input which gets routed through the
relay when the relay is off.
An external FM tuner can be connected to this, in order to avoid
taking up an ext ra input on the amp lifier. Wh en the t uner is off or i n
bypass mode, the FM tuner is routed to the output.

The digital aud io outputs are also shown on this sheet. TX101 and
associated compon ents provid e an i solated unba lanc ed SPDIF ou tpu t
on SK103, and Z4 produces an optical output.

Software notes

The system ha s non volatile storag e in the form of th e EEPROM,
Z202. The fo llowing in formation i s stored th ere and is reme mbered
at power up:-
Service data - all the IDs and static prog types of the services
available in the ensembles found in the last search. This is the
information viewed when turn ing the knob.
Service selected - last service selected.
Display mode - prog type, dynamic label, data rate or signal quality.
Display brightness - off, dim or bright.
Compression level - off or 1-5.
The following parameters are NOT remembered:­Engineering mode. If the unit is turned off while in engineering
mode (or test mode), it will default back to user mode on power up.
Bypass mode - the unit will always power up not in bypass mode.
Secondary services - if a secondary service is selected when it is
switched off, it will power up with the parent service selected.
Erasing the E EPROM - to erase th e EEPROM, go into engin eering
mode (SELECT +8), then hold down preset buttons 1,4,5,8. The
display will say ‘ERASING EEPROM’ followed by ‘PASSED
EEPROM TEST’ then ‘EEPROM ERASED’. If you switch the
power off and on again , it will c om e on with a ll th e p arameters res et.

Display mode - prog type
Display brightness - bright
Compression - off.
Selection Mode – m an ual

Test mode

If you hold in the bypass button while powering up, this will put the
unit in test mode. When the bypass button is released, the software
version will be displayed. Pressing the front panel buttons will cause
a message to be displayed. Turning the knob clockwise or
anticlockwise will cause a message to be displayed. Any RC5 remote
commands will also be displayed, with command and system codes,
and an asterisk for the toggle bit.

Fault mode

On switch on if the Roke module is not fitted, or if there is a problem
with the RX or TX communication signal between the module and
the H8, the unit displays ‘ERROR CIP FAILURE’.

DT81 Service Guide

Fault diagnostics

Fault Action

No power Check mains fuse

Check power supply rails

No Audio output Check for digital output

Check analogue power supply voltages
Check DAC IC

Fails to respond to commands Check supply voltages

Check DAB module

No Display Check flex foil cable

Check for dry joints on micro and display

Spurious display readout Check for dry joints on display board

Display reads “ERROR CIP FAILURE” DAB module not communicating with main micro – replace

DAB module

Display reads “NO SERVICE FOUND” DAB module not receiving signal – check connections to

DAB module/ replace DAB module

Power supply test points

Position Voltage

TP1 0 volt reference
TP2 +5 volts - DAB module
TP3 +10 volts - DAB module
TP4 +5 volts - DAC
TP5 +15 volts
TP6 -15 volts
TP7 +5 volts

Hints & tips

!

No analogue signal - measure between the junction of D10, D11 and D8, D9 for the
secondary supply feed from the transformer, this should be 40 VAC. If this is low or missing
the transformer will require replacing.

!

Not responding to front panel controls – check the processor is ok by pressing the bypass
button, if the bypass relay functions then check the DAB module supplies are ok. If ok then
replace the DAB module.

!

Please note that there are no serviceable parts within the DAB module.

87654321

D

PSU & Remote
L918C2_1.1.SCH

REMOTE_BUS BYPASS

BP STBYLED

C

DAC and o/p amp
L918C4_1.1.SCH

SPDIF_CX MCLK
LRCK SCLK

REMOTE_BUS
BP

SPDIF_OP

SDATABYPASS

STBYLED

Micro and Gold Card I/F
L918C3_1.1.SCH

LRCK
MCLK
SCLK
SDATA
SPDIF_CX

SPDIF_OP

FD_1

FIDUCIAL

FD_2

FIDUCIAL

FD_3

FIDUCIAL

FD_4

FIDUCIAL

PCB

PCB

D

C

DD3

Update Box

UPDATE_BOX

1 4Sheet of

L918PB_1

DRAWING NO.

B

A

ISSUE

L918C1

Tooling & Fixing Holes

Tooling Holes

B

FIX11

FIXING HOLE 3.5

CLEARANCE HOLE

DD4

Layout by

Cliff

CLOGO

A

1 2 3 4 5 6 7 8

DRAWING TITLE

DIVA DT81 DAB Tuner - Project Sheet

Circuit Diagram

A & R Cambridge Ltd.
Pembroke Avenue
Denny Industrial Centre
Waterbeach
Cambridge CB5 9PB

Notes:

Filename

J:\ECO_wip\01_1106 new 1.7 roak module\L918_1.1\L918_1.1.DDB - L918c1_1.1.prj

01_1076

ECO No. DESCRIPTION OF CHANGE

INITIALS

Date Printed

Main PCB Fixing Holes

FIX5

FIX1

FIXING HOLE 3.5

FIXING HOLE 3.2

FIX6

FIX7

FIXING HOLE 3.5

FIXING HOLE 3.5

CHS4

F3

T100MASP

FIX3

FIX2

FIXING HOLE 3.2

CHS2 CHS3

FIX8
FIXING HOLE 3.5

FIX4

FIXING HOLE 3.5

FIXING HOLE 3.5

FIX10

FIX9

FIXING HOLE 3.5

FIXING HOLE 3.5

Kit Mask
FOR DT81 DAB TUNER EXCLUDE NF,DT81

PG 8/6/01 ROKE MODULE V1.7 + changed R67 & R68 1.101_1106
CL 19/03/01 PRODUCTION RELEASE 1.0
CL 22/01/01 PROTOTYPE (NEW DAC & TOSLINK) B.0
CL 03/10/00 INITIAL PROTOTYPE A.0

DATE

Drawn by:

CL11-Jun-2001

SW3D

DAB Module

12
11

D

C

B

(NOT FITTED ON DT81, USES SWITCH ON DISPLAY BOARD)

A

10

A1014

SK4 IEC2

LIVE1 NEUT1

LIVE NEUT

1

2

LIVE2

C60

470P NPO 0805

C65

470P NPO 0805

EMCGND

FM Tuner Pass-through

3
2

SW2A

1

2PCO_NON_LAT

1 2 3 4 5 6 7 8

NL

C31

T2

CM_CHOKE

3 4

F2

!

WARN

T250MA115V

115V units only

F1

!

WARN

T160MA

230V units only

C64

470P NPO 0805

C61

470P NPO 0805

SW2B

2PCO_NON_LAT

220N X2 CLASS

NEUT2

Analogue and
Digital grounds
are joined at the
DAC, Z10

NEUT2

AC115V

115V

AC230V

230V

MUTE CIRCUIT

P5V

6
5
4

R77
10K 0805

0V

T3

115V

230V

C35

1U0 EL

SK12

R26
0R0 0805

T1

1

2

8

7

5

6

12

T2

11

L848TX

+

BYPASS

IDC4S

BP

P7V5_UR

1
2
3
4

14

18V

13
19

0V

20

18V

16

7V5

15
21

22
18

12V

17
23

24

SW3B
A1014

P5V

ACDIG1

T4

ACDIG2

0V

ACDIG3

T1

ACDIG4

0V

R30
10K 0805

R33
10K 0805

R34
47K 0805

ACAUD1

ACAUDG1

ACAUD2

ACDIG1

ACDIG2
ACDIG3

ACDIG4

6
5
4

R71
10K 0805

SK6

1
2
3
4
5
6
7
8
9
10

FFC10V

ACAUD2

R24
1K8 0805

D16
UF4003

R32
47K 0805

TA7317P

R70
47K 0805

D10

UF4003
D8

D12

D14

UF4003

GND1

Z9

2

3

+UR

-UR

ACAUD1

UF4003

UF4003

D6

UF4003
D19

UF4003

IN1

IN2

-UR

P15V

MUTE1

N15V

R29
47K 0805

1

PWR

V-

5

R12
8K2 0805

UF4003

D15

C32

10N 0805

R31
47K 0805

8

RC

0V

4

AGND1

D11

UF4003
D9

UF4003

SW3A
A1014

D13

UF4003

D7

UF4003
D20

UF4003

C23

+

100U EL

9

V+
FB

7

R27
33K 0805

O

C34

+

1U0 EL

R73
1R0 FU

3
2
1

+UR

MUTE1

6

R28
47K 0805

R62
1R0 FU

10N 0805

C59

CHS2

R13
8K2 0805

P3

SW3C
A1014

R74
1R0 FU

POWER SUPPLIES

WARN

!

R72
1R0 FU

WARN

!

R21
1R0 FU

P2

+

C10
3M3 EL

R76
22R 0805

9
8
7

P9

D17
1N4148

MUTE1

PUNREG1

R20

1R0 FU

P7V5_UR

Connect ground to chassis fixing
via decoupling capacitor C32.

P8

+

STBYLED

P15V

R25
100R 0805

3R3 FU

C37

+

1M0 35V

C39

+

1M0 35V

3R3 FU

TO220HS30REG

C29
3M3 EL

RLY1C
RLY 51SB12T

!

WARN
R18

!

WARN
R19

NUNREG1

Z1 LM317T

I

HS1A

C38

1M0 35V

C40

1M0 35V

-UR

Vin

EMCGND

SK5A

Near to PCB

JACK3.5X2

+UR

C36
100P NPO 0805

+

A

+

ADJ

+

C62

1N0 PP

C63

1N0 PP

I

D2

1N4003F

Vout

C11
10U EL

REMIN1

REMIN2

Z3 LM317T

I

Vin

A

Vin

Z5 LM337T

O

R17
390R 0805

R58
2K7 0805 0.1%

SK5B

JACK3.5X2

EMCGND

ADJ

A

+

C21
100U EL

+

C22
100U EL

ADJ

Vout

1N4003F

Far from PCB

C42
100P NPO 0805

DRAWING TITLE

DiVA DT81 DAB Tuner - Power Supplies & Muting

Circuit Diagram

A & R Cambridge Ltd.
Pembroke Avenue
Denny Industrial Centre
Waterbeach
Cambridge CB5 9PB

Notes:

Filename

J:\ECO_wip\01_1106 new 1.7 roak module\L918_1.1\L918_1.1.DDB - L918C2_1.1.SCH

D5

1N4003F

Vout

D4

C26

+

220U EL

P10V

TP5

O

O

TP3

TEST_POINT

+

C19
100U EL

R41
1K0 0805

TEST_POINT
R56
220R 0805

R54
2K4 0805 1%

R55
2K4 0805 1%

+

R57
220R 0805

TP6

TEST_POINT

Z7 7805

I

Vin

GND

G

HS2A TO220HS08REG

Supply +10V

R44
4K7 0805

R42
1K0 0805

P15V

P15V

C12

+

100U EL

C13
100U EL

N15V

N15V

Vout

HS

R49
100K 0805

680P PP

D18

4V7 400MW

DAC
Supply

Z2 LM317T

I

Vin

HS3A
TO220HS30REG

Z8 7805

I

Vin

R4
10K 0805

QQ2

QPAD

R50
100K 0805

R5
10K 0805

QQ1

QPAD

O

C41

+5V for DAB

TP2

TEST_POINT

+

TP1

TEST_POINT

C50
10N 0805

P5VDAB

C24
220U EL

L1
27MH

QQ3

QPAD

P15V

!

WARN

C20

1M0 25V

R3
10K 0805

3
2

R52
1K8 0805

R51
1K5 0805 1%

R53
1K8 0805

R22
100R 1W CF

+

+

C27
220U EL

Z10A

LM393A SM

470P NPO 0805

QQ5

QPAD

C33
10N SM

1

C55

PG 8/6/01 1.101_1106 ROKE MODULE V1.7 + changed R67 & R68

01_1076

CL 19/03/01 PRODUCTION RELEASE 1.0
CL 22/01/01 PROTOTYPE (NEW DAC & TOSLINK B.0
CL 03/10/00 INITIAL PROTOTYPE A.0

ECO No. DESCRIPTION OF CHANGE

INITIALS

Date Printed

DATE

Drawn by:

CL11-Jun-2001

A

G

QQ4

ADJ

+

GND

QPAD

D3

1N4003F

Vout

C14
10U EL

Vout

2 4Sheet of

O

O

P5V

Z10B

6
5

LM393A SM

LM393A SM

TEST_POINT
R16
330R 0805

R43
1K0 0805

+5V for micro

TP7

TEST_POINT

+

7

Z10C

DRAWING NO.

TP4

+

P5V

P7

C28
100U EL

R6
10K 0805

84

87654321

P5V DAC

P5

C25
22U EL

REMOTE_BUS

P5V

C51
10N 0805

L918C2

D

C

B

A

ISSUE

87654321

1

S/PDIF Transmitter

1

C7/C3

2

PRO

3

C1/FC0

4

C6/C2

5

MCK

6

SCK

7

FSYNC

8

SDATA

9

V

10

C/SBF

11

U

12

C9/C15

L5

1U0H SM

CHS3

100P NPO 0805

100P NPO 0805

CHS3

RDI Interface

I/P

Z201

CS8402A

Q4
ZVNL120

C49

Q1

ZVNL120

P5V

23

VCC

GND

C3
10N 0805

CS8402A

R78
100R 0805

C72
47P NPO 0805

C46

FPRESET

Z203
GP1FA550TZ

C4
10N 0805

TRNPT/FC1

M2
M1

M0
TXP
Vd+
Gnd
TXN
RST

CBL/SBC

EM0/C9
EM1/C8

C45

100P NPO 0805

C47

100P NPO 0805

C48

100P NPO 0805

CHS3 CHS3

C5
10N 0805

24
23
22
21
20
19
18
17
16
15
14
13

P7V5_UR

C54

100P NPO 0805

L4

33UH AX
R69

10R 0805

123

LK1
MOLEX3MV

DISPGND

P5V

nREQ

C53

CHS3

100P NPO 0805

R67
100R 0805

nReset

MCLK

LRCK

SCLK

SDATA

REMOTE_BUS

STBYLED

P7V5DISP

SCL

C52

100P NPO 0805

P5V

R68
330R 0805

SDA

SPDIF_OP

SPDIF_OP

nREQ

BYPASS

SPDIF_CX

To Display PCB

SK3

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16
17
18
19
20
21
22

FFC22V

SK8

1
2

IDC2S

SK9

1
2
3
4
5
6

IDC6S

SK10

1
2
3
4
5

IDC5S

D

C

B

DAB Module Connector

VPLL1

GNDMOD

P10V

SCL
SDA

Z204

75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51

H8/3048F

SCL

SDA

THIEF2

JP1

49 50
47 48
45 46
43 44
41 42
39 40
37 38
35 36
33 34
31 32
29 30
27 28
25 26
23 24
21 22
19 20
17 18
15 16
13 14
11 12
9 10
7 8
5 6
3 4
1 2

50 W SKT

R1
10K 0805

VPLL

TXD_DAB
RXD_DAB

84

85

86

AVss

P7.7/AN7/DA1

_VPLL

TEST_POINT

R40
33R MF
R45
33R MF

C44
10N 0805

80

81

82

83

P7.3/AN3

P7.4/AN4

P7.5/AN5

P7.6/AN6/DA0

R15
2K2 0805

78

79

P7.0/AN0

P7.1/AN1

P7.2/AN2

TEST_LOOP

P9V9

C43
10N 0805

76

77

Vref

AVcc

MD2
MD1

MD0
P6.6/LWR
P6.5/HWR

P6.4/RD
P6.3/AS

XTAL

EXTAL

NM1

RES

STBY

CLKOUT
P6.2/BACK
P6.1/BREQ

P6.0/WAIT

P5.3/A19

P5.2/A18

P5.1/A17

P5.0/A16

P2.7/A15

P2.6/A14

50

THIEF1

P5V

Vcc

Vss

Vss

CHS2 CHS3

Z6B

4

D

P5V

C6

10N 0805

C

B

Decoupling for ICs

C7
10N 0805C810N 0805C910N 0805

Z204Z202 Z203 Z205

SW1A

56SW1B
4

2PCO

2PCO

5

9

10

12
13

BYPASS

P5V

R2

3

10K 0805

2
1

74HC32 SM
Z6C

74HC32 SM
Z6D

74HC32 SM

RDI_ON

C18
10N 0805

BYPASS

6

8

11

nReset
MD

7

BYPASS

14

Z6E

GND

VDD

74HC32 SM

MD

BP

SK1

1 2
3 4
5 6
7 8
9 10
11 12
13 14

HEADER 7X2

Reprogramming Interface

P5V

PMODE

TXD1

RXD1

P5V

P_mode

R39
2K2 0805

C66

470P NPO 0805

VPP

C67

470P NPO 0805

SK2

1
2
3
4
5

IDC5S

P5V

10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25

THIEF4

C68

470P NPO 0805

PA4
PA5
PA6
PA7

1

Vcc

2

PB0

3

PB1

4

PB2

5

PB3

6

PB4

7

PB5

8

PB6

9

PB7
Vpp/RESO
Vss
TxD0/P9.0
TxD1/P9.1
RxD0/P9.2
RxD1/P9.3
IRQ4/SCK0/P9.4
IRQ5/SCK1/P9.5
D0/P4.0
D1/P4.1
D2/P4.2
D3/P4.3
Vss
D4/P4.4
D5/P4.5
D6/P4.6

nREQ

P5V

R10
10K 0805

M1

DAB TUNER MODULE

C69

DAB TUNER MODULE

470P NPO 0805

R65
100R 0805

R66
100R 0805

P10V

L3

2U2H AX

P5V P5V

R14
2K2 0805

Q2
ZVNL120Q3ZVNL120

87

88

89

90

91

100

92

Vss

PA093PA194PA295PA396PA497PA598PA699PA7

P8.4/CS0

P8.0/IRQ0

P8.1/IRQ1

P8.2/IRQ2

P8.3/IRQ3

H8/3048F

D7/P4.726D8/P3.027D9/P3.128D10/P3.229D11/P3.330D12/P3.431D13/P3.532D14/P3.633D15/P3.734Vcc35A0/P1.036A1/P1.137A2/P1.238A3/P1.339A4/P1.440A5/P1.541A6/P1.642A7/P1.743Vss44A8/P2.045A9/P2.146A10/P2.247A11/P2.348A12/P2.449A13/P2.5

THIEF3

D0D1D2D3D4D5D6

D7

R46
100R 0805

RDI

SCLK

SDATA

R60
1K0 0805

LRCK_IN

R64
100R 0805

RESET

MCLK

P5VDAB

L2

2U2H AX

P5VDAB

Z6A

1
2

MD

C2

3

74HC32 SM

P5V

C17
10N 0805

R9
10K 0805

D1

BAS16W SM

X1

16MHZ#A

22P NPO 0805C122P NPO 0805

R48
1K0 0805

nReset

P5V

R7
10K 0805

SK11

IDC2S
R47
330R 0805

P5V

R75
10K 0805

nReset

1
2

RBUSFP

Z205

DS1233

DS1233M

R61
100R 0805

MCLK_SP

R63
100R 0805

REMOTE

1
2

Vcc
Vcc

Res
Gnd

LRCK

3 5

P5V

2
4

3
1

100P NPO 0805
C70

C71
100P NPO 0805

Z11

4

74AHC1G00 SM

D0D1D2D3D4D5D6

P5V

28

VCC

EEPROM

A

Z204SW

L918SW

DT81 H8 SOFTWARE
L918SW

1 2 3 4 5 6 7 8

D7

1

26

19

RB

M28C64A

DQ011DQ112DQ213DQ315DQ416DQ517DQ618DQ7
A010A19A28A37A46A55A64A73A825A924A1021A1123A12

A1A0A2A3A4A5A6A7A8A9A10

NC

2

A11

A12

VSS

WE27CE20OE

P5V

Z202

14

22

A0A1A2A3A4A5A6A7A8A9A10

A11

A12

A

DRAWING TITLE

DiVA DT81 DAB Tuner - micro circuit

A & R Cambridge Ltd.
Pembroke Avenue
Denny Industrial Centre
Waterbeach
Cambridge CB5 9PB

Notes:

Filename

J:\ECO_wip\01_1106 new 1.7 roak module\L918_1.1\L918_1.1.DDB - L918C4_1.1.SCH

Circuit Diagram

PG 8/6/01 1.101_1106 ROKE MODULE V1.7 + changed R67 & R68

CL 19/03/01 PRODUCTION RELEASE 1.0

01_1076

CL 22/01/01 PROTOTYPE (NEW DAC & TOSLINK) B.0
CL 03/10/00 INITIAL PROTOTYPE A.0

INITIALS

11-Jun-2001

DATE

Drawn by:

CL

3 4Sheet of

DRAWING NO.

ECO No. DESCRIPTION OF CHANGE

Date Printed

L918C4

ISSUE

D

C

B

A

LRCK
SDATA
SCLK

MCLK

+

C110
10U EL

C118

100N 0805

+

C111
10U EL

84

Z104C

4560D SM

DIGITAL OUTPUT

SPDIF_CX

AUDIO AMPLIFIER AND LOW-PASS FILTER

VOUTLP

VOUTLN

VOUTRP

VOUTRN

LEFT1

20K LOG SNAPIN#A

AUDGND

Z4
GP1FA550TZ

R102
5K6 0805 1%

R100
5K6 0805 1%

R104
5K6 0805 1%

R103
5K6 0805 1%

C123

10U NP

RV1A

RIGHT1

20K LOG SNAPIN#A

C100

2N2 PP

C101
2N2 PP

C102

2N2 PP

C104
2N2 PP

C124

10U NP

RV1B

DRAWING TITLE

DiVA DT81 DAB Tuner - DAC, Audio Outputs & Headphones

A & R Cambridge Ltd.
Pembroke Avenue
Denny Industrial Centre
Waterbeach
Cambridge CB5 9PB

R23
22R 0805

R101
22R 0805

1
2
3
4
5
6
7

C133

10U SILMIC

+

C120
100N 0805

C119
100N 0805

84

Z103C
4560D SM

SPDIF_CX

R146

100R 0805

1 2 3 4 5 6 7 8

8

9
10
11
12
13
14

P15V

C115
680P PP

C116
680P PP

N15V

SPDIF_OP

C127

100P NPO 0805

Z100

LRCIN
DIN
BCKIN
MODE8X
SCLK
DIFFHW
DGND
DVDD
AVDDR
AGND2R
VMIDR
VOUTRN
VOUTRP
AGND1

WM8740

R147

10K 0805

P5V DAC

DAC

WM8740

MC/DM1
MD/DM0

AGND2L

VOUTLN

VOUTLP

C128

DIGOUTP1

100N 0805

C129
100N 0805

+

C103
100U SILMIC

28

ML/IIS

27
26
25

MUTE

24

MODE

23

CS/IWO

22

RST

21

ZERO

20

AVDDL

19
18

VMIDL

17
16
15

Vcc

Z102C
OPA2134PA SM

SK103
PHONO1

EMC

R145
0R0 SM

SPDFGND

DIGOUTN1

C135
1N 0805

CHS2

C132

C121
100N 0805

C122
100N 0805

P15V

N15V

+

C113
680P PP

C114
680P PP

C16
10N 0805

C134
10U SILMIC

+

+

C117
10U EL

1

P5V

23

VCC

I/P

GND

100N 0805

84

C15

22U EL

R110
1K5 0805 1%

R105
6K8 0805 1%

R109
1K5 0805 1%

R106
6K8 0805 1%

R114
1K5 0805 1%

R107
6K8 0805 1%

R113
1K5 0805 1%

R108
6K8 0805 1%

C105

470P PP

C107

470P PP

Notes:

Filename

J:\ECO_wip\01_1106 new 1.7 roak module\L918_1.1\L918_1.1.DDB - L918C3_1.1.SCH

Z102B

5
6

3
2

C57

100U NP

7

OPA2134PA SM

C106

470P PP

Z102A

1

OPA2134PA SM

C109

470P PP

R37
0R0 0805

R129
2K2 0805

R35
100K 0805

C58

100U NP

R36
100K 0805

Circuit Diagram

LEFT1

LEFT1

RIGHT1

RIGHT1

R137
2K2 0805

P15V

P15V

R130
12K 0805

2
3

R132
2K2 0805

Not Fitted

R115
4K7 0805 1%

C108

+

100U SILMIC

Not Fitted

R116
4K7 0805 1%

C112

+

100U SILMIC

1

Z103A

4560D SM

R138
12K 0805

Z104A

2
3

4560D SM

R140
2K2 0805

SK102

1

F

EMC

N

PHONO2#

SH101

1

F

PHONO4G

N

HEADPHONE AMPLIFIER

HPSL

F

SK101A

N

PHONO4G

EMCPHONO2

C131
47P NPO 0805

C125
100P PP

CHS4

ALL PARTS IN THIS BOX ARE NOT FITTED ON DT81

ANGND

5
6

R111
4K7 0805 1%

R122
75R 0805 1%

R121
4K7 0805 1%

R133
22R 0805

Z103B

4560D SM

R134
12K 0805

1

Z104B

5
6

R112
75R 0805 1%

7

R141
22R 0805

7

4560D SM

R142
12K 0805

R135
22R 0805

HPGnd

LTUNIN

RLY1A

RLY 51SB12T

L101

7F003

1N 0805

RTUNIN

RLY1B

RLY 51SB12T

R143
22R 0805

LOUT

OPGND

SK101B

C30

ROUT

R136
100R 1W CF

HPSR HPSE

R144
100R 1W CF

PG 8/6/01 1.101_1106 ROKE MODULE V1.7 + changed R67 & R68

01_1076

ECO No. DESCRIPTION OF CHANGE

Date Printed

CL 19/03/01 PRODUCTION RELEASE 1.0

22-01-01 PROTOTYPE (NEW DAC & TOSLINK) B.0

CL
CL

03/10/00 INITIAL PROTOTYPE A.0

INITIALS

DATE

Drawn by:

CL/PG11-Jun-2001

4 4Sheet of

LEFT

RIGHT

C130

47P NPO 0805

LEFT

EMC

RIGHT

EMC Shield

C126
100P PP

C73

1N 0805

DRAWING NO.

EMCGND

4
5

2
3
1

6
7

EMCGND

L
LHC

RHC

R

87654321

SK7

1 2
3 4
5 6

DIL6 VPLG

SK104
HPSKT

L918C3

D

C

B

A

ISSUE

DT81 Display Board L919_1.1

Reference Description Part

C1 CERD 100N 63V 20% RA 2A410
C2 ELST 220U 16V 2N722
C3-C5 CERD 100N 63V 20% RA 2A410
C6,C6 ELST 220U 16V 2N722
C8 CERD 100N 63V 20% RA 2A410
C9-C19 CERD 1N0 63V 20% RA 2A210
D1-D14 SSDIODE 1N4148 75V 3A4148
LED100 LED RED/GREEN 3MM L-

M1 NORITAKE ITRON

PCB PRINTED CIRCUIT BOARD L919PB_1
Q1 TRANS LF SS P BC557B 4A557
Q2 TRANS MOSFET SW

R1 RES MF W4 150R 1% 1H115
R2 RES MF W4 1% 1K0 1H210
R3 RES MF FU W3 3R3R 5%

R4,R5 RES MF W4 4K7 1% 1H247
R6,R7 RES MF W4 10K 1% 1H310
R8,R9 RES MF W4 4K7 1% 1H247
R10 RES MF W4 10K 1% 1H310
R11-R13 RES MF W4 100R 1% 1H110
RP1 RES NETWORK 100Kx8

RX1SP IR RX SUPPORT PAD E822AP
RX1 REMOTE RX PIC-26043TM2

SK1 22-WAY FFC CONN HORIZ 8K8122
SW1­SW15

SW16 EC16B2414 A1211
X1 CER RESON 4.00MHz 7W005
Z1 IC VREG POS 7805 5D7805
Z2SW DT81 DISPLAY SOFTWARE L919SW
Z2 40 PIN IC SOCKET 8S040
Z2 IC CMOS MICRO PIC16C65 5H16C65

93WEGW

CU20025RCPB-U1J

ZVNL120A

NFR25

COMMON

38KHZ

TACT SWITCH 2-PIN LOW
PROF 9.5mm ACTUATOR
SKHVPH

Number

3D006

B1010

4K120

1G833

1V410

B2107

A1508

DT81 Main Board L918_1.1

Reference Description Part

C1,C2 MLC 22P 100V NPO 5% 0805 2L022
C3-C9 MLC 10N 50V X7R 10% 0805 2J310
C10 ELST 3M3 25V 2N833
C11 ELST 10U 50V 2N610
C12,C13 ELST 100U 25V 2N710
C14 ELST 10U 50V 2N610
C15 ELST 22U 63V 2N622
C16-C18 MLC 10N 50V X7R 10% 0805 2J310
C19 ELST 100U 25V 2N710
C20 ELST 1M0 25V 2N810
C21-C23 ELST 100U 25V 2N710
C24 ELST 220U 16V 2N722
C25 ELST 22U 63V 2N622
C26,C27 ELST 220U 16V 2N722
C28 ELST 100U 25V 2N710
C29 ELST 3M3 25V 2N833
C30 MLC 1N 50V X7R 10% 0805 2 J 210
C31 220NF CLASS X2 CAP

275VRMS

Number

2D422

C32 MLC 10N 50V X7R 10% 0805 2J310
C33 MLC 10N 50V X7R 10% SM 2C310
C34,C35 ELST 1U0 50V 20% RA 2N510
C36 MLC 100P 100V NPO 5% 0805 2L110
C37-C40 ELST 1M0 35V 2N810C
C41 PPRO 680P 5% 63V RA 2D168
C42 MLC 100P 100V NPO 5% 0805 2L110
C43,C44 MLC 10N 50V X7R 10% 0805 2J310
C45-C49 MLC 100P 100V NPO 5% 0805 2L110
C50 MLC 10N 50V X7R 10% 0805 2J310
C51 MLC 10N 50V X7R 10% 0805 2J310
C52-C54 MLC 100P 100V NPO 5% 0805 2L110
C55 MLC 470P 100V NPO 5% 0805 2L147
C59 MLC 10N 50V X7R 10% 0805 2J310
C60,C61 MLC 470P 100V NPO 5% 0805 2L147
C62,C63 PPRO 1N0 5% 63V RA 2D210
C64-C71 MLC 470P 100V NPO 5% 0805 2L147
C72 MLC 47P 100V NPO 5% 0805 2L047
C73 MLC 1N 50V X7R 10% 0805 2J210
C100­C102
C103 ELEC 100U 25V SILMIC 2P710AS
C104 PPRO 2N2 5% 63V RA 2D222
C105­C107
C108 ELEC 100U 25V SILMIC 2P710AS
C109 PPRO 470P 63V 5% RA 2D147N
C110,C111 ELST 10U 50V 2N610

C112 ELEC 100U 25V SILMIC 2P710AS
C113,C114 PPRO 680P 5% 63V RA 2D168

C117 ELST 10U 50V 2N610
C118­C122
C127 MLC 100P 100V NPO 5% 0805 2L110
C128,C129 MLC 100N 50V X7R 10% 0805 2J410

C130,C131 MLC 47P 100V NPO 5% 0805 2L047

C132 MLC 100N 50V X7R 10% 0805 2J410
C133,C134 ELEC 10U 25V SILMIC 2P610CS

C135 MLC 1N 50V X7R 10% 0805 2J210
D1 DIODE SS SM BAS16W 3AS16W
D2-D5 RECTIFIER 1N4003F 1A 200V 3B4003
D6-D16 ULTRAFAST RECTIFIER

D17 SSDIODE 1N4148 75V 3A4148
D18 ZENER 4V7 400MW 3C04704
D19,D20 ULTRAFAST RECTIFIER

F1 FUSECLIP C11166
F1 FUSEHOLDER 20mm PCB 8S004
F1 INS COVER PCB

F2 FUSEHOLDER 20mm PCB 8S004
F2 INS COVER PCB

F3 FUSECLIP C11166
F3 SPARE FUSEHOLDER F062
HS1 HEATSINK TO220 CLIP 30 F007
HS2 HEATSINK TO220 8.6

HS2 HEATSINK CLIP TO220 13/8.6

HS3 HEATSINK TO220 CLIP 30 F007
JP1 CONN 50 WAY FW-25-04-L-

L1 27mH INDUCTOR 7D327
L2,L3 2U2H INDUCTOR 7D922

PPRO 2N2 5% 63V RA 2D222

PPRO 470P 63V 5% RA 2D147N

MLC 100N 50V X7R 10% 0805 2J410

3B4003F

DIODE UF4003 1A

3B4003F

DIODE UF4003 1A

F022

FUSEHOLDER

F022

FUSEHOLDER

F008

DEGC/W

F006

DC/W

8K2001

D-350-065

L4 33 UH IND 34-48330 7D033
L5 1UH0 IND SM NL322522T-

L101 FERRITE BEAD SINGLE

M1 DAB TUNER MODULE 1.7 B012
PCB PRINTED CIRCUIT BOARD L918PB_1
Q1-Q4 TRANS MOSFET SW

R1-R7 RES SM 0805 10K 1M310
R9,R10 RES SM 0805 10K 1M310
R12-R15 RES S M 08 0 5 8K2 1M282
R16 RES SM 0805 330R 1M133
R17 RES SM 0805 390R 1M139
R18,R19 RES MF FU W3 3R3 5%

R20,R21 RES MF FU W3 1R0 5%

R22 RES CF 1W 100R 5% 1E110
R23 RES SM 0805 22R 1M022
R24 RES SM 0805 1K8 1M218
R25 RES SM 0805 100R 1M110
R26 RES SM 0805 0R0 1M000
R27 RES SM 0805 33K 1M333
R28,R29 RES SM 0805 47K 1M347
R30 RES SM 0805 10K 1M310
R31,R32 RES SM 0805 47K 1M347
R33 RES SM 0805 10K 1M310
R34 RES SM 0805 47K 1M347
R35,R36 RES SM 0805 100K 1M410
R37 RES SM 0805 0R0 1M000
R39 RES SM 0805 2K2 1M222
R40 RES MF W4 33R 1% 1H033
R41-R43 RES S M 08 0 5 1K0 1M210
R44 RES SM 0805 4K7 1M247
R45 RES MF W4 33R 1% 1H033
R46 RES SM 0805 100R 1M110
R47 RES SM 0805 330R 1M133
R48 RES SM 0805 1K0 1M210
R49,R50 RES SM 0805 100K 1M410
R51 RES SM 0805 1K5 1M215
R52,R53 RES SM 0805 1K8 1M218
R54,R55 RES SM 0805 2K4 1M224
R56,R57 RES SM 0805 220R 1M122
R58 RES SM 0805 0.1% 2K7 1L227
R60 RES SM 0805 1K0 1M210
R61 RES SM 0805 100R 1M110
R62 RES MF FU W3 1R0 5%

R63-R67 RES SM 0805 100R 1M110
R68 RES SM 0805 330R 1M133
R69 RES SM 0805 10R 1M010
R70 RES SM 0805 47K 1M347
R71 RES SM 0805 10K 1M310
R72-R74 RES MF FU W3 1R0 5%

R75 RES SM 0805 10K 1M310
R76 RES SM 0805 22R 1M022
R77 RES SM 0805 10K 1M310
R78 RES SM 0805 100R 1M110
R100 RES SM 0805 5K6 1M256
R101 RES SM 0805 22R 1M022
R102­R104
R105­R108
R109,R110 RES SM 0805 1K 5 1M215

1R0J

AXIAL TAPED 2K BOX

ZVNL120A

NFR25

NFR25

NFR25

NFR25

RES SM 0805 5K 6 1M256

RES SM 0805 6K 8 1M268

7B810

7F003

4K120

1G833

1G810

1G810

1G810

R113,R114 RES SM 0805 1K 5 1M215

R121 RES SM 0805 4K7 1M247
R122 RES SM 0805 75R 1M075
R129 RES SM 0805 2K2 1M222
R130 RES SM 0805 12K 1M312
R132 RES SM 0805 2K2 1M222
R133 RES SM 0805 22R 1M022
R134 RES SM 0805 12K 1M312
R135 RES SM 0805 22R 1M022
R137 RES SM 0805 2K2 1M222
R138 RES SM 0805 12K 1M312
R140 RES SM 0805 2K2 1M222
R141 RES SM 0805 22R 1M022
R142 RES SM 0805 12K 1M312
R143 RES SM 0805 22R 1M022
R145 RES SM W4 1% 0R0 1206 1A000
R146 RES SM 0805 100R 1M110
R147 RES SM 0805 10K 1M310
RLY1 RELAY 960 OHM 51SB12T A205
SH101 PHONO EMC SHIELD E825MC
SK1 14 WAY DIL HEADER 8K6314
SK3 22-WAY FFC CONN 8K8022
SK4 IEC MAINS 2-PIN PCB 8A014
SK5 MIN JACK DUAL 3.5mm

HSJ1002-01-1020

SK101 PHONO SKT 4-WAY EMC

GOLD
SK102 PHONO SKT 2-WAY EMC 8D229
SK103 PHONO SKT SINGLE EMC 8D220
SW1 SW PUSH 2PCO A1008
SW3 SW PUSH 4PCO PBT A1014
T1 DAB TUNER TX L848TX
T2 Mains common mode choke 7E030
X1 CRYSTAL 16.MHz

PARALLEL
Z1-Z3 IC VREG POS LM317T 5D317T
Z4 SPDIF OPTICAL

TRANSMITTER
Z5 IC VREG POS LM337T 5D337
Z6 IC HCMOS SM 74HC32 5K7432
Z7 IC VREG POS 7805 5D7805
Z8 IC VREG POS 7805 5D7805
Z9 IC COMPARITOR TA7317P 5M7317
Z10 IC COMPARITOR SM DUAL

LM393A
Z11 IC AHC SN74AHC1G00 5KA100
Z100 Wolfson 192K 24bit DAC 5A8740
Z102 IC OPAMP DUAL SM

OPA2134PA
Z201 IC CMOS CS8402 SPDIF TX 5G8402
Z202 8192 X 8-BIT ELECTRICALLY

ERASABLE PROM M28C64C-

150 MS1
Z203 SPDIF OPTICAL

TRANSMITTER
Z204SW DT81 DAB TUNER

SOFTWARE
Z204 H8/3048 128K FLASH

MICROCONTROLLER
Z205 IC MICRO RESET DS1233M 5H1233

8D302

8D225

7X021

5TG550T

5M393AD

5B2134

5H2864

5TG550T

L918SW

5H3048

R111 RES SM 0805 4K7 1M247
R112 RES SM 0805 75R 1M075

DT81 General As sembly Parts Li st

ITEM 230V 115V 100V SILVER BLACK DESCRIPTION WHERE USED QTY

L813RC REMOTE CONTROL 1
8H016 DAB AERIAL 1
E828CP E827CP COVER PLATE 1
E972AY E985AY DT81 FACIA ASSY. 1
HA4V06S HA4V06B M4X6MM SCREW COVER TO CHASSIS 4
5H16C65
B012 DAB TUNER MODULE 1.7 L918AY M1 1
C11166

160mA T
E028AY DIVA DT81 REAR PANEL ASSY 1
E806MI MAINS INSULATOR 1
E810CH CHASSIS 1
E815SP SUB PANEL 1
E859PM STORE BUTTON 8
E870PM POWER BUTTON 1
E879PM DIVA RANGE FOOT 4
E879SL PRODUCT CONFIGURATION LABEL 1
E886PM DT81 CONFIRM BUTTON 6
E891PM DIVA AMP MEDIUM KNOB PLAIN 1
E896PM SELECT BUTTON 1

F022

F062 SPARE FUSE HOLDER L918AY F3 1
F164 TAPE BK 3M TESA. 6MM WIDE 008
H026 HEX PILLAR M3X11 BRASS DAB MODULE TO MOTHERBOARD 4
HA3V06A M/C TORX P/H M3X6 ST ZP 8
HA3V10A M3 X 10 PCB TO CHASSIS 16
HE6V06B No.6 X 6 FRONT PANEL TO CHASSIS 6
HF4V09B No.4 X 9 SUB PANEL, REAR PANEL 23
HL3AB M3 WASHER BETWEEN DAB MODULE SUPPORT

K5408 LIGHT PIPE SLEEVING (6mm) 1
L801CA 22-WAY FLEX-FOIL DISPLAY MODULE TO MOTHER

L842CA AERIAL LEAD ASSEMBLY DAB MODULE TO REAR PANEL 1
L848TX DAB TUNER TX L918AY T1 1
L918AY DT81 MAIN BOARD ASSY. 1
L918SW H8 SOFTWARE L918AY Z204 1
L919AY DT81 DISPLAY BOARD ASSY. 1
E803MI DAVM PHONO SHIELD INSULATOR STICK ON EMC SHIELD BEHIND

C11256
250Ma T

INS COVER PCB FUSEHOLDER L918AY F1 F2 2

LOADED WITH L919SW

FUSE 20mm

FIT ON L919AY AT Z2 1

L918AY F1 F2 2

4

PILLARS AND PCB

1

PCB

1

PHONO SKT