Arcam DiVA DT81 User manual
DT81
DiVA DT81
Digital Radio Tuner
Service Manual
ARCAM
ARCAM
Issue 1.0
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 buffer, 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 analogue supplies are on all the time 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 circuit has a time constant of 2.5 seconds, so 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 H8/3048F 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 system stores data about the multiplexes it finds when it
does a search, and other information (presets, compression 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 connector apart from the aerial input which has a cable going
straight from the rear panel to the module.
Communication between the micro and the DAB module is done via
the serial port of each device on TX_DAB/RX_DAB.
The digital audio output from the module comprise of MCLK
(12.288MHz master 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 optical 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 extra input on the amplifier. When the tuner is off or in
bypass mode, the FM tuner is routed to the output.
The digital audio outputs are also shown on this sheet. TX101 and
associated components provide an isolated unbalanced SPDIF output
on SK103, and Z4 produces an optical output.
Software notes
The system has non volatile storage in the form of the EEPROM,
Z202. The following information is stored there and is remembered
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 turning 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 EEPROM - to erase the EEPROM, go into engineering
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 come on with all the parameters reset.
Display mode - prog type
Display brightness - bright
Compression - off.
Selection Mode – manual
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.
1 2 3 4 5 6 7 8
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DRAWING NO.
DRAWING TITLE
Drawn by:
DATE
Filename ECO No. DESCRIPTION OF CHANGE
J:\ECO_wip\01_1106 new 1.7 roak module\L918_1.1\L918_1.1.DDB - L918c1_1.1.prj
A & R Cambridge Ltd.
Pembroke Avenue
Denny Industrial Centre
Waterbeach
Cambridge CB5 9PB
DIVA DT81 DAB Tuner - Project Sheet
Circuit Diagram
L918C1
CL11-Jun-2001
INITIALS
Date Printed 1 4Sheet of
Notes:
REMOTE_BUS BYPASS
BP STBYLED
PSU & Remote
L918C2_1.1.SCH
SPDIF_CX MCLK
LRCK SCLK
SDATABYPASS
REMOTE_BUS
BP
SPDIF_OP
STBYLED
DAC and o/p amp
L918C4_1.1.SCH LRCK
MCLK
SCLK
SDATA
SPDIF_CX
SPDIF_OP
Micro and Gold Card I/F
L918C3_1.1.SCH
Kit Mask
FOR DT81 DAB TUNER EXCLUDE NF,DT81
Tooling & Fixing Holes
Tooling Holes Main PCB Fixing Holes
CLEARANCE HOLE
CHS2 CHS3
F3
T100MASP
CL 03/10/00 INITIAL PROTOTYPE A.0
Layout by
Cliff
DD4
CLOGO
Update Box
DD3
UPDATE_BOX
PCB
PCB
L918PB_1
FD_1
FIDUCIAL
FD_2
FIDUCIAL
FD_3
FIDUCIAL
FD_4
FIDUCIAL
CL 22/01/01 PROTOTYPE (NEW DAC & TOSLINK) B.0
FIX6
FIXING HOLE 3.5
FIX7
FIXING HOLE 3.5
FIX1
FIXING HOLE 3.2
FIX2
FIXING HOLE 3.2
FIX11
FIXING HOLE 3.5
FIX5
FIXING HOLE 3.5 FIX3
FIXING HOLE 3.5
FIX4
FIXING HOLE 3.5
FIX10
FIXING HOLE 3.5
FIX9
FIXING HOLE 3.5
FIX8
FIXING HOLE 3.5
CL 19/03/01 PRODUCTION RELEASE 1.0
CHS4
01_1076
PG 8/6/01 ROKE MODULE V1.7 + changed R67 & R68 1.101_1106
1 2 3 4 5 6 7 8
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B
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Filename ECO No. DESCRIPTION OF CHANGE
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
CL11-Jun-2001
INITIALS
Date Printed 2 4Sheet 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
NL
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
O6
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
21
Z10A
LM393A SM
5
67
Z10B
LM393A SM
C41
680P PP L1
27MH
84
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 -URN15V
+URP15V
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
Supply +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 1.101_1106 ROKE MODULE V1.7 + changed R67 & R68
12345678
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Filename ECO No. DESCRIPTION OF CHANGE
J:\ECO_wip\01_1106 new 1.7 roak module\L918_1.1\L918_1.1.DDB - L918C4_1.1.SCH
A & R Cambridge Ltd.
Pembroke Avenue
Denny Industrial Centre
Waterbeach
Cambridge CB5 9PB
DiVA DT81 DAB Tuner - micro circuit
Circuit Diagram
L918C4
CL
11-Jun-2001
INITIALS
Date Printed 3 4Sheet of
Notes:
SPDIF_OP
P10V
P5VDAB
MCLK
LRCK
SCLK
SDATA
MD
D1
BAS16W SM
P5V
P5V
P5V
P5V
X1
16MHZ#A
MD
RDI Interface
S/PDIF Transmitter
DAB Module Connector
EEPROM
Reprogramming Interface
P5V
P5V
BYPASS 1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
SK3
FFC22V
To Display PCB
P7V5_UR
P5V
P5V
P5V Decoupling for ICs
Z204Z202 Z203 Z205
REMOTE_BUS
P5V P5V
nREQ
P_mode
1
2
3
SW1A
2PCO
4
5
6
SW1B
2PCO
P5V
nReset
SCL SDA
SCL
SDA
nReset
nReset
nReset
Vcc 2
Res 3
Gnd 1
DS1233
Vcc 4
Z205
DS1233M
P5V
Q2
ZVNL120 Q3
ZVNL120
Q1
ZVNL120
1 2
3 4
5 6
7 8
9 10
11 12
13 14
SK1
HEADER 7X2
Vcc
1PB0
2PB1
3PB2
4PB3
5PB4
6PB5
7PB6
8PB7
9Vpp/RESO
10 Vss
11 TxD0/P9.0
12 TxD1/P9.1
13 RxD0/P9.2
14 RxD1/P9.3
15 IRQ4/SCK0/P9.4
16 IRQ5/SCK1/P9.5
17 D0/P4.0
18 D1/P4.1
19 D2/P4.2
20 D3/P4.3
21 Vss
22 D4/P4.4
23 D5/P4.5
24 D6/P4.6
25
D7/P4.7
26 D8/P3.0
27 D9/P3.1
28 D10/P3.2
29 D11/P3.3
30 D12/P3.4
31 D13/P3.5
32 D14/P3.6
33 D15/P3.7
34 Vcc
35 A0/P1.0
36 A1/P1.1
37 A2/P1.2
38 A3/P1.3
39 A4/P1.4
40 A5/P1.5
41 A6/P1.6
42 A7/P1.7
43 Vss
44 A8/P2.0
45 A9/P2.1
46 A10/P2.2
47 A11/P2.3
48 A12/P2.4
49 A13/P2.5
50
P2.6/A14 51
P2.7/A15 52
P5.0/A16 53
P5.1/A17 54
P5.2/A18 55
P5.3/A19 56
Vss 57
P6.0/WAIT 58
P6.1/BREQ 59
P6.2/BACK 60
CLKOUT 61
STBY 62
RES 63
NM1 64
Vss 65
EXTAL 66
XTAL 67
Vcc 68
P6.3/AS 69
P6.4/RD 70
P6.5/HWR 71
P6.6/LWR 72
MD0 73
MD1 74
MD2 75
AVcc 76
Vref 77
P7.0/AN0 78
P7.1/AN1 79
P7.2/AN2 80
P7.3/AN3 81
P7.4/AN4 82
P7.5/AN5 83
P7.6/AN6/DA0 84
P7.7/AN7/DA1 85
AVss 86
P8.0/IRQ0 87
P8.1/IRQ1 88
P8.2/IRQ2 89
P8.3/IRQ3 90
P8.4/CS0 91
Vss 92
PA0 93
PA1 94
PA2 95
PA3 96
PA4 97
PA5 98
PA6 99
PA7 100
H8/3048F
Z204
H8/3048F
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
41 42
43 44
45 46
47 48
49 50
JP1
50 W SKT
A0
10 A1
9A2
8A3
7A4
6A5
5A6
4A7
3A8
25 A9
24 A10
21 A11
23 A12
2
RB 1
WE
27 CE
20 OE
22
VCC
28 VSS 14
NC 26
DQ0 11
DQ1 12
DQ2 13
DQ3 15
DQ4 16
DQ5 17
DQ6 18
DQ7 19
Z202
M28C64A
A1
A0
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
P5V
RDI
SCL
SDA
REMOTE
RESET
nREQ
BYPASS
RDI_ON
PMODE
RXD1
TXD1
VPP
MD
PA4
PA5
PA6
PA7
BP
1
2
3
4
5
SK2
IDC5S
1
2
SK8
IDC2S
1
2
3
4
5
6
SK9
IDC6S
1
2
SK11
IDC2S
1
23
Z6A
74HC32 SM
4
56
Z6B
74HC32 SM
9
10 8
Z6C
74HC32 SM
12
13 11
Z6D
74HC32 SM
VDD 14
GND
7
Z6E
74HC32 SM
P5V
nREQ
D0
D1
D2
D3
D4
D5
D6
D7
D0
D1
D2
D3
D4
D5
D6
D7
P5V
MCLK_SP
LRCK_IN
P5V
R40
33R MF
R45
33R MF
C7/C3
1PRO
2C1/FC0
3C6/C2
4MCK
5SCK
6FSYNC
7SDATA
8V
9C/SBF
10 U
11 C9/C15
12 EM1/C8 13
EM0/C9 14
CBL/SBC 15
RST 16
TXN 17
Gnd 18
Vd+ 19
TXP 20
M0 21
M1 22
M2 23
TRNPT/FC1 24
CS8402A
Z201
CS8402A
L2
2U2H AX
L3
2U2H AX
SPDIF_CX
SPDIF_OP
CHS3
CHS3
CHS3 CHS3
CHS3
L4
33UH AX
1
2
3
4
5
SK10
IDC5S
1
24
3 5
Z11
74AHC1G00 SM
Q4
ZVNL120
P5V
FPRESET
TXD_DAB
RXD_DAB
RBUSFP
CHS2 CHS3
LRCK
MCLK
SCLK
SDATA
P5VDAB
P10V
P9V9
GNDMOD
DISPGND
P7V5DISP
VPLL1
_VPLL
TEST_POINT
VPLL
TEST_LOOP
L5
1U0H SM
CL 03/10/00 INITIAL PROTOTYPE A.0
DAB TUNER MODULE
M1
DAB TUNER MODULE
BYPASS
BYPASS
STBYLED
23
1VCC
GND
I/P
Z203
GP1FA550TZ
CL 22/01/01 PROTOTYPE (NEW DAC & TOSLINK) B.0
1
2
3
LK1
MOLEX3MV
CL 19/03/01 PRODUCTION RELEASE 1.0
R2
10K 0805
R10
10K 0805
R39
2K2 0805
R7
10K 0805
R1
10K 0805
R75
10K 0805
R14
2K2 0805 R15
2K2 0805
R9
10K 0805
R63
100R 0805
R78
100R 0805
R65
100R 0805
R66
100R 0805
R64
100R 0805
R61
100R 0805
R46
100R 0805
R47
330R 0805
R60
1K0 0805
R48
1K0 0805
R67
100R 0805
R69
10R 0805
C6
10N 0805 C7
10N 0805 C8
10N 0805 C9
10N 0805 C18
10N 0805
C66
470P NPO 0805
C67
470P NPO 0805
C68
470P NPO 0805
C69
470P NPO 0805
C44
10N 0805
C43
10N 0805
C17
10N 0805
C5
10N 0805
C4
10N 0805
C3
10N 0805
C70
100P NPO 0805
C72
47P NPO 0805
C71
100P NPO 0805
C52
100P NPO 0805
C53
100P NPO 0805
C54
100P NPO 0805
C47
100P NPO 0805
C48
100P NPO 0805
C45
100P NPO 0805
C46
100P NPO 0805
C49
100P NPO 0805
C2
22P NPO 0805
C1
22P NPO 0805
R68
330R 0805
THIEF1
THIEF2
THIEF4
THIEF3
01_1076
PG 8/6/01 1.101_1106 ROKE MODULE V1.7 + changed R67 & R68
L918SW
DT81 H8 SOFTWARE
Z204SW
L918SW
1 2 3 4 5 6 7 8
A
B
C
D
87654321
D
C
B
A
ISSUE
DRAWING NO.
DRAWING TITLE
Drawn by:
DATE
Filename ECO No. DESCRIPTION OF CHANGE
J:\ECO_wip\01_1106 new 1.7 roak module\L918_1.1\L918_1.1.DDB - L918C3_1.1.SCH
A & R Cambridge Ltd.
Pembroke Avenue
Denny Industrial Centre
Waterbeach
Cambridge CB5 9PB
DiVA DT81 DAB Tuner - DAC, Audio Outputs & Headphones
Circuit Diagram
L918C3
CL/PG11-Jun-2001
INITIALS
Date Printed 4 4Sheet of
Notes:
EMC
1
N
F
SK101A
PHONO4G
N
F
SK101B
PHONO4G
EMC
SK103
PHONO1
DIGOUTP1
DIGOUTN1
P5V DAC
VOUTLP
VOUTLN
LEFT1
RIGHT1
LOUT
ROUT
EMCGND
ANGND
RLY1A
RLY 51SB12T
RLY1B
RLY 51SB12T
L101
7F003
LRCK
MCLK
SCLK
SDATA
C115
680P PP
C116
680P PP
P15V
N15V
LHC
2RHC
3
1
4L
5
6
R
7
SK104
HPSKT
HEADPHONE AMPLIFIER
C125
100P PP C126
100P PP
HPSL
HPSR HPSE
C123
10U NP
C124
10U NP
DAC
AUDIO AMPLIFIER AND LOW-PASS FILTER
DIGITAL OUTPUT
EMC
1
N
F
SK102
PHONO2#
LEFT
RIGHT
RIGHT
LEFT
SPDIF_CX
RV1A
20K LOG SNAPIN#A
RV1B
20K LOG SNAPIN#A
LEFT1
RIGHT1
SPDIF_CX
P5V
1 2
3 4
5 6
SK7
DIL6 VPLG
RIGHT1
LEFT1
SPDIF_OP
EMCGND
+
C108
100U SILMIC
+
C112
100U SILMIC
+C103
100U SILMIC
+
C15
22U EL
3
21
Z103A
4560D SM 5
67
Z103B
4560D SM
84
Z103C
4560D SM
3
21
Z102A
OPA2134PA SM
5
67
Z102B
OPA2134PA SM
84
Z102C
OPA2134PA SM
C113
680P PP
C114
680P PP
P15V
N15V
C57
100U NP
C58
100U NP
HPGnd
3
21
Z104A
4560D SM 5
67
Z104B
4560D SM
84
Z104C
4560D SM
R136
100R 1W CF
R144
100R 1W CF
AUDGND
SPDFGND
OPGND
LTUNIN
RTUNIN
EMC Shield
SH101
EMCPHONO2
CL
22-01-01 PROTOTYPE (NEW DAC & TOSLINK) B.0
LRCIN
1
DIN
2
BCKIN
3
MODE8X
4
SCLK
5
DIFFHW
6
DGND
7
DVDD
8
AVDDR
9
AGND2R
10
VMIDR
11
VOUTRN
12
VOUTRP
13
AGND1
14 Vcc 15
VOUTLP 16
VOUTLN 17
VMIDL 18
AGND2L 19
AVDDL 20
ZERO 21
RST 22
CS/IWO 23
MODE 24
MUTE 25
MD/DM0 26
MC/DM1 27
ML/IIS 28
WM8740
Z100
WM8740
C101
2N2 PP
C106
470P PP
C100
2N2 PP C105
470P PP
C104
2N2 PP
C109
470P PP
C102
2N2 PP C107
470P PP
VOUTRP
VOUTRN
C118
100N 0805 C120
100N 0805
C119
100N 0805
+C111
10U EL
C122
100N 0805
C121
100N 0805
+C117
10U EL
C132
100N 0805
+C110
10U EL
23
1VCC
GND
I/P
Z4
GP1FA550TZ
CL
03/10/00 INITIAL PROTOTYPE A.0
ALL PARTS IN THIS BOX ARE NOT FITTED ON DT81
+
C134
10U SILMIC
+
C133
10U SILMIC
R146
100R 0805
C127
100P NPO 0805
C128
100N 0805
C129
100N 0805 C135
1N 0805
R147
10K 0805
CHS2
P15V
P15V
CL 19/03/01 PRODUCTION RELEASE 1.0
R23
22R 0805
R101
22R 0805
R108
6K8 0805 1%
R106
6K8 0805 1%
R107
6K8 0805 1%
R105
6K8 0805 1%
R103
5K6 0805 1%
R104
5K6 0805 1%
R100
5K6 0805 1%
R102
5K6 0805 1%
R110
1K5 0805 1%
R109
1K5 0805 1%
R114
1K5 0805 1%
R113
1K5 0805 1%
R115
4K7 0805 1%
R111
4K7 0805 1%
R116
4K7 0805 1%
R121
4K7 0805 1%
R122
75R 0805 1%
R112
75R 0805 1%
R37
0R0 0805
R129
2K2 0805
R132
2K2 0805
R137
2K2 0805
R140
2K2 0805
R130
12K 0805
R138
12K 0805
R134
12K 0805
R142
12K 0805
R133
22R 0805
R135
22R 0805
R141
22R 0805
R143
22R 0805
R35
100K 0805
R36
100K 0805
C16
10N 0805
C30
1N 0805
C130
47P NPO 0805
C131
47P NPO 0805
R145
0R0 SM
Not Fitted
Not Fitted
C73
1N 0805
CHS4
01_1076
PG 8/6/01 1.101_1106 ROKE MODULE V1.7 + changed R67 & R68
DT81 Display Board L919_1.1
Reference Description Part
Number
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-
93WEGW 3D006
M1 NORITAKE ITRON
CU20025RCPB-U1J B1010
PCB PRINTED CIRCUIT BOARD L919PB_1
Q1 TRANS LF SS P BC557B 4A557
Q2 TRANS MOSFET SW
ZVNL120A 4K120
R1 RES MF W4 150R 1% 1H115
R2 RES MF W4 1% 1K0 1H210
R3 RES MF FU W3 3R3R 5%
NFR25 1G833
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
COMMON 1V410
RX1SP IR RX SUPPORT PAD E822AP
RX1 REMOTE RX PIC-26043TM2
38KHZ B2107
SK1 22-WAY FFC CONN HORIZ 8K8122
SW1-
SW15 TACT SWITCH 2-PIN LOW
PROF 9.5mm ACTUATOR
SKHVPH
A1508
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
DT81 Main Board L918_1.1
Reference Description Part
Number
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 2J210
C31 220NF CLASS X2 CAP
275VRMS 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
C100-
C102 PPRO 2N2 5% 63V RA 2D222
C103 ELEC 100U 25V SILMIC 2P710AS
C104 PPRO 2N2 5% 63V RA 2D222
C105-
C107 PPRO 470P 63V 5% RA 2D147N
C108 ELEC 100U 25V SILMIC 2P710AS
C109 PPRO 470P 63V 5% RA 2D147N
C110,C11
1 ELST 10U 50V 2N610
C112 ELEC 100U 25V SILMIC 2P710AS
C113,C11
4 PPRO 680P 5% 63V RA 2D168
C117 ELST 10U 50V 2N610
C118-
C122 MLC 100N 50V X7R 10% 0805 2J410
C127 MLC 100P 100V NPO 5% 0805 2L110
C128,C12
9 MLC 100N 50V X7R 10% 0805 2J410
C130,C13
1 MLC 47P 100V NPO 5% 0805 2L047
C132 MLC 100N 50V X7R 10% 0805 2J410
C133,C13
4 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
DIODE UF4003 1A 3B4003F
D17 SSDIODE 1N4148 75V 3A4148
D18 ZENER 4V7 400MW 3C04704
D19,D20 ULTRAFAST RECTIFIER
DIODE UF4003 1A 3B4003F
F1 FUSECLIP C11166
F1 FUSEHOLDER 20mm PCB 8S004
F1 INS COVER PCB
FUSEHOLDER F022
F2 FUSEHOLDER 20mm PCB 8S004
F2 INS COVER PCB
FUSEHOLDER F022
F3 FUSECLIP C11166
F3 SPARE FUSEHOLDER F062
HS1 HEATSINK TO220 CLIP 30 F007
HS2 HEATSINK TO220 8.6
DEGC/W F008
HS2 HEATSINK CLIP TO220 13/8.6
DC/W F006
HS3 HEATSINK TO220 CLIP 30 F007
JP1 CONN 50 WAY FW-25-04-L-
D-350-065 8K2001
L1 27mH INDUCTOR 7D327
L2,L3 2U2H INDUCTOR 7D922
L4 33UH IND 34-48330 7D033
L5 1UH0 IND SM NL322522T-
1R0J 7B810
L101 FERRITE BEAD SINGLE
AXIAL TAPED 2K BOX 7F003
M1 DAB TUNER MODULE 1.7 B012
PCB PRINTED CIRCUIT BOARD L918PB_1
Q1-Q4 TRANS MOSFET SW
ZVNL120A 4K120
R1-R7 RES SM 0805 10K 1M310
R9,R10 RES SM 0805 10K 1M310
R12-R15 RES SM 0805 8K2 1M282
R16 RES SM 0805 330R 1M133
R17 RES SM 0805 390R 1M139
R18,R19 RES MF FU W3 3R3 5%
NFR25 1G833
R20,R21 RES MF FU W3 1R0 5%
NFR25 1G810
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 SM 0805 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%
NFR25 1G810
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%
NFR25 1G810
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
R102-
R104 RES SM 0805 5K6 1M256
R105-
R108 RES SM 0805 6K8 1M268
R109,R11
0 RES SM 0805 1K5 1M215
R111 RES SM 0805 4K7 1M247
R112 RES SM 0805 75R 1M075
R113,R11
4 RES SM 0805 1K5 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 8D302
SK101 PHONO SKT 4-WAY EMC
GOLD 8D225
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 7X021
Z1-Z3 IC VREG POS LM317T 5D317T
Z4 SPDIF OPTICAL
TRANSMITTER 5TG550T
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 5M393AD
Z11 IC AHC SN74AHC1G00 5KA100
Z100 Wolfson 192K 24bit DAC 5A8740
Z102 IC OPAMP DUAL SM
OPA2134PA 5B2134
Z201 IC CMOS CS8402 SPDIF TX 5G8402
Z202 8192 X 8-BIT ELECTRICALLY
ERASABLE PROM M28C64C-
150 MS1
5H2864
Z203 SPDIF OPTICAL
TRANSMITTER 5TG550T
Z204SW DT81 DAB TUNER
SOFTWARE L918SW
Z204 H8/3048 128K FLASH
MICROCONTROLLER 5H3048
Z205 IC MICRO RESET DS1233M 5H1233
DT81 General Assembly Parts List
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 LOADED WITH L919SW FIT ON L919AY AT Z2 1
B012 DAB TUNER MODULE 1.7 L918AY M1 1
C11166
160mA T C11256
250Ma T
FUSE 20mm L918AY F1 F2 2
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 INS COVER PCB FUSEHOLDER L918AY F1 F2 2
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
PILLARS AND PCB 4
K5408 LIGHT PIPE SLEEVING (6mm) 1
L801CA 22-WAY FLEX-FOIL DISPLAY MODULE TO MOTHER
PCB 1
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
PHONO SKT 1
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