Arcam C30 Service Manual
Service
Manual
Issue 1.0
C30 Pre-AmpliÞer
ARCAM
Bringing music & movies to life
!
Circuit description
!
Circuit diagrams
o
L958AY power supply board
o L965AY pre-amp board
o L928AY display board
o L870AY phono board
o L955AY multi-channel board
!
Transformers
o
L923TX – 115/230VAC toroidal
o
L922TX – 100VAC toroidal
o
L907TX – 100VAC frame
Contents List
!
Exploded view diagram
!
Mechanical & packing parts list
!
Circuit board silk screen & parts list
o L928AY display board
o
L955AY multi-channel board
o
L958AY power supply board
o
L965AY pre-amp board
o
L870AY phono board
C30 preamp
troduction
In
C30
The
lifier circuit description
pr
e-amplifier uses pre-amp input
.
switching/control and display boards that are
very similar in design to the boards used in
both the Diva A85/A90 and Fmj A32
integrated
amplifiers and as such you may
already be familiar with the layout and
topologies of these boards. The C30 boasts a
very much over-engineered power supply and
output stage that is designed to bring the very
best out of the existing Pre-amp input
switching board.
The main PCB L958AY also contains output
buffers for the unbalanced outputs to drive
long cables and balanced line drivers. A
headphone amplifier is included to drive low
impedance headphones down to 32 Ohm.
For description of the pre-amplifier switching
and control board see the section...
Power supply.
The mains input comes in via SKT1. Two Y
caps return common mode noise to the
chassis ground and an
single ended noise. The
X cap
reduces any
1M5
resistor
following this is in place to discharge the
capacitors when the unit is turned off.
The mains selector switch, which follows the
resistor, changes the configuration of the
transformer windings from series for 230V to
parallel for 115V. Tx1 is a standby
transformer it powers the microcontroller at all
times so that the unit can be put into and out
of standby. To reduce voltage losses after
this transformer, low forward drop diodes are
used. A low drop out regulator follows to
create the
4.5v(D)
supply; this supply powers
the micro and digital circuits.
The primary of the Toroid supply transformer
Tx2 is connected to CON3 and the power to
this is switched on and off by the relay RLY1.
The transformer has a number of secondary
outputs and we use separate taps and bridge
rectifiers networks followed by bulk
capacitors to smooth the ripple. The voltages
generated are +24V and -24V for the main
analogue supplies, +
the
VFD
, and
+18V
46V
for the
, which is used to power
the trigger output. The smoothed
then goes through regulators
REG 5
to create
pre-amplifier PCB via
regulators
18V
the
REG 3
and creating a
+/- 18V
CON4.
REG 6
and
+/-15V
HT
supply to
+/- 24V
REG 2
and
this is passed the
Another set of
follow taking
supply that is
available for add on modules such as the 7.1
channel input board. A 5v supply is derived
via regulator
REG 4
from the
18V
to run the
headphone amplifier.
Mains detect.
A mains present detector runs from the
standby transformer, this detects the loss of
mains using a peak hold circuit based around
D7/TR1/DZ1 and TR2. If the power is lost this
piece of circuitry sends a flag to the
microcontroller so it can mute the outputs
and shut down the unit. See Fig 1 for notes
protection modes
on
.
12v trigger and RC5 receiver.
The trigger output on
TR4
to provide a current limited supply at
SKT2
is driven through
around 13V.
IC1 A
incoming
band-pass filter centred on
and
RC5
B
are used to demodulate
from socket SKT2. IC1A is a
36KHz
. This is
followed by a peak detector circuit that
demodulates the incoming signal.
Fig 1. Protection and mute mode and
measurements.
Prot line Measured at. Working
reading
AC present Resistor R12 +4.5v
Mute* Con 8 Pin 5 +4.5v
Standby* Resistor R5 at
point P18
Trigger ResistorR10 at
point P54
.7v
+1.8v
Pre-amp input card.
In
troduction.
Input switching
The pre-amp stage is a high-performance,
DC coupled design with microprocessor
control of input select, two independent tape
loops, electronic volume control and tone
bypass.
It features a discrete power supply and lownoise linear circuitry to obtain exceptionally
low distortion and noise performance results.
Power supply stage
The secondary transformer output windings
from the main toroid transformer are
connected to
rectified and smoothed by
D307
voltage should be around +/- 27 V obviously
this is dependent on the A.C level at the
mains inlet socket;
secondary A.C s.m fuses these are rated at
2A.
The voltage regulators are discrete emitter
followers the
below as the
similar.
Q300
source, supplying around 7mA into
C302 and C314 reduce ripple and broadband
noise on the zener diode. Q305 and Q306
form a complementary Darlington NPN
transistor, which is configured as an emitter
follower producing +15v at it’s output.
to provide bulk charge storage and to reduce
the AC output impedance of the power
supply.
D302
during power down.
Z301 is a conventional LM317 type circuit to
regulate the +15v rail down to +5v for the
tone and volume control circuits.
and
and
prevents reverse bias of the supply
SK300
C300, C301
+15
–15 v
R300
. The A.C voltage is
F300
voltage stage is described
stage is effectively very
act as a constant current
D300, D301, D306,
. The unregulated
F301
and
are the
D310
C303
is
Each of the inputs has a pair of diodes to the
+/- 15v rails to prevent static spikes from
causing damage to the CMOS multiplexors.
In addition, there is a simple resistorcapacitor filter with a corner frequency of
approximately 340kHz to remove any
unwanted high frequency interference from
the signal. This uses high quality WIMA
polypropylene capacitors for the best
possible performance.
Z104 (left) and Z105 (right) are the main
input multiplexers, which are configured in a
“virtual earth” unity gain arrangement with
Z115
topology and the phase is corrected by the
inverting volume control.
Z115B
integrating servos, which remove any D.C
coefficient from the Analogue input switching
stages before the signal is passed onto the
following stages,
filter to remove any broadband noise from the
servo output and to improve the speed
response.
Z100–Z103
these are non-inverting and the outputs are
.
again buffered by
arriving at the two tape loop outputs.
Z106
changeover switch and is used to select the
tone controls or direct by pass mode. (See
below for more information).
Tone controls
The tone control stage is non-inverting and
uses a gyrating bell filter for the Bass and a
simple shelving filter for the high frequencies,
the left channel only will be described.
The input is attenuated by –6dB and biased
to a voltage of +2.5v D.C by
R112,R110,R111
signals fall within the 0 – 5v D.C required by
the digital potentiometer
Z116
and
(left) and
is configured as a double pole
. This is an inverting circuit
Z116B
R180
are the Tape output selectors
Z9
a/b and
and
(right) are the
C147
and
Z10
C110
. This is so the
Z108
.
(left) form a
a/b before
C111,R113
,
1B
Z11
an active equivalent of a series resonant LCR
circuit. This has an impedance minimum 5.4k
at around 80.
The digital pots
bass and treble respectively, this
accomplished by moving the wiper connected
to the frequency-sensitive impedance
between to non inverting and inverting
terminals of
ratio of feedback boost and feed forward
attenuation of the circuit at the desired
frequencies, thus providing a EQ gain control
that is on a logarithmic scale, with the use of
a linear pot.
Z112B
bring the nominal level of signal back to unity
C116
from the output to prevent click and bangs
when the tone control are activated.
Z108 is controlled by a simple 3-wire serial
interface from the microprocessor. Each of
the digital lines has it’s own ground return
these are terminated at the GND pin of the
chip to minimize any electromagnetic
interference.
Volume control
Z107
IC. It works in conjunction with external opamp Z117a/b by varying the feed-forward and
feedback resistors in an inverting gain
configuration, the volume control is driven by
3-wire data from the H8 micro on the display
board – if the control receives no data it will
remain in Audio mute mode.
Relay RLY100 shunts the output of the Opamps to ground at switch on – power down
and when switching between inputs.
and its associated components form
Z108D
Z112A
provides the 6dB of gain necessary to
C117
and
is a VSDVC electronic volume control
, effectively changing the
remove the 2.5VDC offset
and
Z108A
control the
Audio output stages.
The Audio output stage contains the
buffered, un-buffered and balanced outputs
as well as the headphone driver.
The audio signal from the preamp PCB
enters the board on
signal goes straight to the output via the mute
relays
version of the signal is created by
IC101
configured as unity gain non-inverting
buffers.
The C30 also has a Balance XLR output
stage that drives into the balanced line
drivers
create a transformer-less balanced output.
Headphone Output.
The selected audio output signal is driven
into the headphone driver IC102; this signal
then passes through CON101 and CON102
to the headphone socket
signal passes through the switch contacts in
the headphone socket so when headphones
are inserted the main outputs are relay
muted.
Please note:
headphone sockets control contacts are
faulty or damaged the unit will be
permanently stuck in audio mute mode.
RC5 remote code assignment change.
The C30 has the ability to switch between
RC5 system code 16* and 19, we can
achieve this by pressing and holding the
Phono/Aux – CD and AV – DVD buttons
simultaneously the display will show.
RlY100A
. IC100 and IC101 are op-amps
IC103
RC5 System Code
16*
and
CON100
RLY101B
and
IC104
this means that if the
and the direct
. A buffered
IC100
. These line divers
SKT101
. The mute
and
We can toggle the system code using the
rotary encoder.
Display board
The
display board is very similar in design to
the board that has been used for many years
in the A85 family of products inc FMJ A32
and as such those of you familiar with these
products will know there way around this
board, a full description follows.
The power supply rails for the display board
are derived from the main board we should
expect to see the below supplies in place (Fig
2.)
Fig 2 Display board power supply pins
Power supply Pin number of SK1
+ 5v D.C (micro) Pin 14
+ 5v D.C Pin 1
+ 46v D.C for VFD HT Pin 3
P
lease note: the H8 micro is very critical of
the +5v supply and as such the unit may
crash or fail to power up during use if the +5v
supply drops below 4.5v.
H8 Microprocessor
The
H8
micro at location
Z1
is preprogrammed by Arcam using a flashprogramming module and cannot be
reprogrammed in the field unless you have
access to the appropriate hardware and
software.
H8
The
forms the heart of the C30 and takes
on all major control functions including.
. Control of the input switching.
1
2. Controls the action of the volume cont.
3. Monitors protection status and mute lines
A85/A90/A32 only.
4. Sends display information to the VFD.
5. Receives and decodes RC5 data.
6. Receives data from rear panel remote
input.
7. Stores setting information via 24C02 Eprom.
At
initial power up the H8 micro is reset by
DS1233
a
econo reset package.
Z2
The input switching information is driven out
to the Pre-amp card via the 9 select lines that
appear on Pins 14 – 22 of SK3.
The Volume control and tone control circuits
are driven from the
SCLK
data lines from SK3.
SDATA–SLOAD
and
The Mute status line has control over the
pre-amp output relay at location
RLY100
; the
mute is triggered during power up/down and
between input selections and under Mute
commands.
Within the C30 the
SP1/SP2
and
DC prot,Therm,VI prot
control lines are all connected
to Digital ground on the main board of the
pre-amp as these are not required within this
product.
The H8 drives the
can be seen on R64 – R67 as
DISPCLK,DISPBLK,DISPLAT
VFD
via 4 Data lines that
DISPDAT
these drive
directly into the VFD.
Remote Data
can be received by the C30 via
the 3.5 mm Phono jack on the rear of the
Pre-amp and the previously described
remote demodulator on the main board this
demodulated RC5 arrives on the display
board via
Pin 3
common IR input pin of the H8 micro (
of
SK1
and goes into a
pin 87
this pin is also used to pick the RC5 code up
from the Display onboard remote receiver.
At power up
the H8 reads all previously
stored and last settings used by the amplifier
from the e-eprom at location IC5 these will
include the last input used and tape settings
also tone control and input level settings, any
changes to the set-up of the amplifier are
sent to the e-eprom for future recall, at power
down the H8 downloads it’s settings to the eeprom.
All indication LED’s
are driven directly from
the H8 micro, these LED’s are tagged onto
the +5v rail via 10k current limiting resistors
Q1 and Q2 form a toggle between Green and
Red for the standby/power LED.
The volume control
encoder at location
is driven from a Rotary
SW18
the toggle lines
from the encoder arrive at the H8 as control
lines Phase A and Phase B on
Pins 93
and
94.
,
)
Multi channel input module (optional)
In
troduction
used for communication these are seen on
the circuit diagram as PB0, receive from
ExpBrd and Transmit to ExpBrd.
The multi input module an optional expansion
board that allows the existing Amp/Pre-amp
to become part of a surround system when
driven by a DVD/SACD player with Analogue
surround outputs.
The board has two sets of 7.1 input (8
channels) these are labelled as MCH1 and
MCH2 and accept Left, Right, Centre, Left
surround, Right surround, Left Back, Right
back audio Information.
All input channel levels can be trimmed levels
to allow for system balancing.
Put very simply this is an eight-channel
preamplifier.
Power supply
The board is powered from the +/- 15v supply
on the existing pre-amp board on board
regulators REG100 and REG101 regulate
these rails down to –5v and +5v respectively.
When the host is communicating with the
onboard micro controller PB0 will be driven
low, otherwise the Data sent will be ignored.
Input switching
The input allow for the signal routing of the
eight channels from either of the inputs these
MCH1
are
are used to select each bank of inputs this
inputs stage utilizes 6 x 74HCT4053
multiplexers you will notice that IC204 and
C205
I
channels as this input switch only deals with
two channels (Back left and Back right).
Please note: The software will only allow one
set of inputs to be selected at any one time.
The outputs of the input multiplexers drive
into a group of 8 line drive Op-Amps
(IC300-IC307) these are configured two pole
integrating D.C servo before reaching the
Volume control stages.
only utilize the
and
MCH2
, select lines
S1
and
S1-S2-S3
S2
select
The digital sections of the circuit are powered
by a single +5v rail this is isolated from the
main 5v rail via inductor L100.
Capacitors C100, C101 and C105, C107 act
as bulk charge stores to prevent current
surges from affecting the main pre-amp stage
power supply stages.
Micro Processor
The micro controller operates from a
crystal and is in control of all of the board’s
function via its input/output ports.
The micro controller is reset on power up via
R/C network R101 and C120. The micro
controller stays in reset condition for
approximately
micro controller (H8 Z1 on display board) to
initialize and for the power supplies to settle.
The Host micro communicates with the
onboard micro via CON 101. Three lines are
500ms
this allows the host
4 Mhz
Volume control
Volume control is performed by two channel
Burr-Brown PGA2310
The gain is under micro control with steps of
0.5dB.
All volume control chips share
Mute
and
that are grouped in the following way Front
Right, Front Left, Centre and Sub share the
same select line, and the remaining channels
share a chip select line (Surround right and
Left, Back right and Left). The volume of
each channel can be controlled individually
“trimmed”.
If a loud clicking is heard on a individual
channel whilst adjusting the volume it is
probably the input stage that is at fault and
not the volume control chip itself, the input
stage should prevent D.C levels form
entering the volume control.
control but have Chip select lines
volume control chips.
Data,Clock
Output driver stage
2
r
The output driver stage consists of four
OPA2134
dual channel Op-Amps
(IC400-
IC403) each output for instance Front left
channel takes one channel of the op-amp.
The front left and front right channels are
driven down into the Pre-amp board via Pins
1 and 2 of connector Con400 and is fed into
the input switches of the Pre-amp boards
multiplex on Pin 9 from this point the signal is
dealt with as a normal signal input into the
Pre-amp.
Please note: the left and right signals are
seen on the L937 pre-amp card circuit
diagrams as module left and module right.
The Remaining channels are rail clamped to
remove any over-voltage spikes from the rails
and to prevent damage to ancillary equipment
using diode packages
D400 – D405
.
Each output has a mute relay that when
engaged shunts the output to ground at
power up and power down preventing any
spurious D.C levels from leaving the card.
Simplified Block Diagram
Volume
6
8
8
Input Mux
Multi-channel inputs
Buffer
2
Buffer
Micro controlle
6
Volume
2
6
Buffer
2
Buffer
Mute
Centre, Sub, Surround
L+R, Back L+R out
Front Left and Right
to host.
From Host micro controller
Phono stage
The
Phono board is a simple single stage
RIAA amplifier. It consists of two channels of
high gain amplification, and switching
between moving magnet (MM) and moving
coil (MC) settings.
:
PSU
The unit derives its
the unit it is fitted into with only local
decoupling capacitors on board.
Interface
The unit connects to the host unit via a 8 way
connector:
Amplifier
The left channel has designators beginning
with 100, and the right with 200. For the
purposes of this description the left channel
will be described, as the right channel the
same in all respects.
The amplifier is a small signal class A voltage
feedback amplifier with switchable gain. The
input consists of an actively loaded
differential pair of very low noise PNP
transistors
are very specific and should only be replaced
with identical parts with the E grade high
gain.
for the pair, which sets the quiescent current
for the entire amplifier. The active load
consists of TR110 & TR111, which forms part
of a differential current mirror with TR112,
113&114
active load
a maximum.
:
:
(TR106, 107)
TR100&TR101
. This differential stage also has an
(TR102 & TR103)
±15V
regulated rails from
. These transistors
form a current source
to keep gain to
SW100
poles of the switch change between the
different loading required for each type of
cartridge: R108 & C109 for MM, and added
inparallel for MC
two poles change the feedback resistor value
to alter the gain. MM: R105 and in parallel
for MC R123.
The DC offset is controlled by a non-inverting
servo built around IC100. The amount of
servo current is different for each gain setting
via
frequency high pass point remains the same
for both settings. However the high pass
point for the circuit is set by C113. This gives
a warp filter, stops DC startup thumps from
upsetting DC coupled circuitry and an
approximation of the RIAA/IEC curve (-2dB
@ 20Hz).
The output is class A buffered by a dual
mirror follower
quiescent current is set up by D100 and
R118, 119.
Closed loop stability is achieved with C116,
117 giving symmetrical slewing capability.
switches between MM & MC. Two
R111
R104&C108
(MM) &
R124
(TR104, 105, 108, 109)
(MC) so that the low
. The other
. The
Both of these differential stages are designed
to have as much gain as possible to enable
the single stage design. The RIAA response
is achieved in the feedback network:
C101,110,111,112,119,120,&R115,112.
C115 is used to correct between MM & MC
gains as the amplifier is non-inverting.
PSU and Control Circuit
L958CT1_1.4_PSU and Control New Demod.Sch
QTY DESCRIPTIONPART No. NOTESITEM
ITEM1 1 Blank PCB C30 Preamp PSUL958PB
Audio Circuit
L958CT2_1.4_Audio1.Sch
ITEM2 1 Clip For SW Profile HeatsinkF006
ITEM3 1 Clip For SW Profile HeatsinkF006
ITEM4 1 Clip For SW Profile HeatsinkF006
ITEM6 1 Clip For SW Profile HeatsinkF006
ITEM7 1 Clip For SW Profile HeatsinkF006
ITEM8 1 Pad Damping 15x6x3MM SorbothaneE802AP
ITEM9 1 Pad Damping 7.5x6x3 SorbothaneE826AP
ITEM10 1 Pad Damping 7.5x6x3 SorbothaneE826AP
ITEM11 1 Pad Damping 7.5x6x3 SorbothaneE826AP
ITEM12 1 Pad Damping 7.5x6x3 SorbothaneE826AP
ITEM13 1 Fuseholder Cover For 20mm FuseholderF022
ITEM14 1 Fuseholder Cover For 20mm FuseholderF022
ITEM15 1 Fuseholder Cover For 20mm FuseholderF022
ITEM16 1 Fuseholder Cover For 20mm FuseholderF022
ITEM17 1 Earth Lead Assy 75MM8M101 SOLDER TO TAB ON SKT1
Clip for HS1
Clip for HS2
Clip for HS3
Clip for HS5
Clip for HS6
PIECE SHARED BETWEEN C21, C22 (SEE ASSY DWG)
PLACE ON RLY100
PLACE ON RLY101
PLACE ON RLY102
PLACE ON RLY103
FD1
FD2
FD3
FD4
TOOL1
TOOL2
TOOL3
TOOL4
DRAWING TITLE
C30 Preamp
23425
A & R Cambridge Ltd.
Pembroke Avenue
Waterbeach
Cambridge CB5 9PB
Filename:
Notes:
Contact Engineer:
FIX1
Dia 3.2mm
FIX8
Dia 3.5mm
L958CT0_1.4_Top Level.Prj
FIX2
Dia 3.2mm
FIX9
Dia 3.5mm
Contact Tel: (01223) 203200Kevin Lamb
FIX3
1
0V CHS
Dia 3.5mm
FIX10
Dia 3.5mm
ECO No. DESCRIPTION OF CHANGE
INITIALS
Printed:
FIX4
Dia 3.5mm
FIX11
Dia 3.5mm
DATE
15-Jul-2003
FIX5
1
Dia 3.5mm
FIX12
Dia 3.5mm
1 1Sheet of
FIX6
Dia 3.5mm
FIX13
Dia 3.5mm
DRAWING NO.
FIX7
Dia 3.5mm
1.4R1 changed to VR3715/07/03KAL03_E215
1.3RC5 remote bus demod fix27/06/03AJD03_E191
1.2Renumbered Sorbothane21/06/03KAL03_E186
1.1Mods following listening test. Sorbothane and some caps06/06/03AJD03_E172
1.0Production release17/04/03MJT03_E119
ISSUE
L958CT0
SH1
Voltage specific fuses:
P35
1
EMC Shield
SKT1
BULGIN
PX0580
123
567
P36
P37
P1
N
P2
E
L
P3
CON1
WAGO
256
4
CON2
MOLEX
44472
8
FS3 T250mA S504
FHLDR3
20mm HLDR
P73
FS4 T250mA S504
FHLDR4
20mm HLDR
P75
GREEN
P22
C17
470N
100V
MKS2
P23
C19
470N
100V
MKS2
P74
P72
P38
P39
C1
3N3
250V
CER
1
C2
3N3
250V
CER
EARTH
D17
SBYV27-200
DO-15
D18
SBYV27-200
DO-15
D19
SBYV27-200
DO-15
D23
SBYV27-200
DO-15
DBR1
W02
DBR2
W02
P40
P41
P76
P77
C5
220N
275V
PP X2
D20
SBYV27-200
DO-15
D21
SBYV27-200
DO-15
D22
SBYV27-200
DO-15
D24
SBYV27-200
DO-15
R1
1M5
0W5
VR37
+46V(D)
DGND
+18V(D)
DGND+18V(D)
AGND
DGND
C38
100UF
100V
YK
C43
1000UF
35V
YK
NEUTRAL
LIVE
C21
10,000UF
50V
USR
C22
10,000UF
50V
USR
2A22B
115V 230V
1A11B
P24
P25
P26
P42
SW1
18-000-0019
+24V7(A)
C18
470N
100V
MKS2
SP1
PSUGND(A)
PSUGND(A)PSUGND(A)
PSUGND(A)
C20
470N
100V
MKS2
-24V7(A)
Voltage specific transformer:
Refer to parent BoM for which part to
use for which voltage.
FHLDR1
20mm HLDR
P4
FS1 T2A S506
FS2 T2A S506
FHLDR2
20mm HLDR
FS1 & FS2 are T2A
type for 230V / 115V
only. Parent BoM
indicates which type
for which voltage.
P43
PSUGND(A)
MAINS WIRING AND AUXILIARY SUPPLY
TX1
Open Frame
P8
1 5
115V
P9
2
3 7
P6
115V
P7
4
RLY1B
Takamisawa
F1CA005V
P5
RLY1A
F1CA005V
Takamisawa
P27
HS2A
SW50-2
8.8C/W
+24V7(A) +18V(A)
REG2
LM317T
TO-220
C26
100N
50V
0805
C25
100N
50V
0805
-24V7(A) -18V(A)
HS5A
SW50-2
8.8C/W
C3
3N3
250V
CER
C4
3N3
250V
CER
D8
BAS16
SOT-323
ADJ
9V
9V
P10
P28
P29
P30
ADJ
P31
C35
22UF
20V
OSCON
C34
22UF
20V
OSCON
P44
REG5
LM337T
TO-220
D12
BAS16
SOT-323
P11
6
FS5
T500mA
R452
P12
8
CON3
1
4
2
5
3
6
MOLEX
44472
R17
68R
0W125
0805
R19
100R
0W125
0805
R7
2K2
0W125
0805
R6
2K2
0W125
0805
R22
100R
0W125
0805
R18
68R
0W125
0805
P13
C6
100N
50V
0805
D9
BAS16
SOT-323
D13
BAS16
SOT-323
D1
1N5819
DO-41
D2
1N5819
DO-41
P32
C10
100UF
20V
OSCON
CON4
MOLEX
44472
SP2 SP3GND_N1
GND_Q1
C12
100UF
20V
OSCON
P45
D5
BAS16
SOT-323
HS1A
SW50-2
8.8C/W
P14 P17
D3
1N5819
DO-41
D4
1N5819
DO-41
C9
3300UF
25V
YK
P15
1
2
3
4
PSUGND(A)
C7
100N
50V
0805
REG1
TO-220
LM1086CT-ADJ
C23
100N
50V
0805
HS3A
SW50-2
8.8C/W
REG3
LM317T
TO-220
C28
100N
50V
0805
C27
100N
50V
0805
HS6A
SW50-2
8.8C/W
ADJ
P16
D10
BAS16
SOT-323
ADJ
ADJ
C37
22UF
20V
OSCON
C36
22UF
20V
OSCON
P46
REG6
LM337T
TO-220
D14
BAS16
SOT-323
HS4A
PF752
23.7C/W
P33
R3
270R
0W125
0805
R4
680R
0W125
0805
D25
BAS16
SOT-323
R20
100R
0W125
0805
R21
100R
0W125
0805
R9
2K2
0W125
0805
R8
2K2
0W125
0805
R23
100R
0W125
0805
R24
100R
0W125
0805
MAINS PRESENT DETECT
R14
3K3
0W125
0805
C15
10UF
50V
YK
+4V5(D)
DZ1
BZX84C
2V7
SOT-23
DGND
P79
R12
10K
0W125
0805
TR2
BC849B
SOT-23
+4V5(D)
R36
6K8
0W125
0805
C8
100N
50V
0805
+5
REG4
L7805CV
TO-220
P78
DGND
PSUGND(A)
C14
1000UF
10V
YK
C24
100N
50V
0805
+5V(A)
C33
100UF
25V
YK
+4V5(D)
DGND
RLY1C
Takamisawa
F1CA005V
P18
TR3
FMMT497
SOT-23
P19
R5
2K2
0W125
0805
D6
BAS16
SOT-323
R11
10K
0W125
0805
P20 P21
D7
BAS16
SOT-323
TR1
BC849B
SOT-23
PREAMP AUDIO REGULATORS
+15V(A)
-15V(A)
D11
BAS16
SOT-323
D15
BAS16
SOT-323
C11
100UF
20V
OSCON
C13
100UF
20V
OSCON
GND_N2
GND_Q2
CON5
MOLEX
6373
P47
P34
CON6
MOLEX
6373
1
2
3
4
1
2
3
4
CON7
MOLEX
6373
P49
1
2
3
4
P48
SKT2
HOSIDEN
HSJ
GND2
0V CHS
P52 P53
NC1
NC2
C44
GND1
100N
50V
0805
EMCGND3
C16
100N
50V
0805
R1000 is hand fit
it is fitted between pins 1 and 4 of OPTO 1
R25
10R
0W125
0805
P71
P51
TR4
BD179
TO-126
TR5
FMMT497
SOT-23
R2
0R0
0W125
0805
OPTO1
4N35
DIP-6
NF
R38
0R0
P50
12546
0W125
R39
470R
0W125
0805
R1000
MF
1K0
0W25
0805
0V CHS
DGND
C30
100N
50V
0805
R26
3K3
0W125
0805
DZ2
BZX84C
15V
SOT-23
R37
0R0
0W125
0805
+4V5(D)
NF
C39
100P
100V
0805
C29
100N
50V
0805
0V CHS
R10
2K2 0W125
0805
L1
70R@100MHz
P54
NF
DZ3
BZX84C
3V9
SOT-23
DGND
RC5 REMOTE BUS DEMOD
R29
270K
0W125
0805
P58
R30
1K2
0W125
0805
+4V5(D)
C31
100N
50V
0805
P55
R15
3K3
0W125
0805
P56
R31
1K8
0W125
0805
C40
150P 100V
0805
680K 0W125
C32
100N
50V
0805
R32
0805
2
3
C41
150P 100V
0805
84
IC1A
TS972ID
SO-8
P70
DGND
DRAWING NO.
+4V5(D)
CON8
14
13
12
11
THERMPROT
10
DCPROT
9
VIPROT
8
7
SPKR2 ON
6
SPKR1 ON
5
4
3
2
1
MOLEX
5229-NCPB
TO DISPLAY CARD
L958CT1
ISSUE
1.4R1 changed to VR3715/07/03KAL03_E215
1.3RC5 remote bus demod fix27/06/03AJD03_E191
1.2Renumbered Sorbothane21/06/03KAL03_E186
1.1Mods following listening test. Sorbothane and some caps06/06/03AJD03_E172
1.0Production release17/04/03MJT03_E119
+4V5(D) +4V5(D)
INITIALS
Printed:
P64
P65
DATE
15 Jul 2003
P66
P68
P69
P67
+46V(D)
2 3Sheet of
R16
3K3
0W125
P61
R33
470K
0W125
0805
0805
P62
R34
1K5
0W125
0805
R28
22K
0W125
0805
IC1B
6
5
TS972ID
SO-8
7
P80
R13
P60
10K
0W125
0805
P59P57
1
D16
BAS16
SOT-323
C42
680P
100V
0805
R35
4K7
0W125
0805
TR6
MMUN2211LT1
SOT-23
P63
DRAWING TITLE
23425
A & R Cambridge Ltd.
Pembroke Avenue
Waterbeach
Cambridge CB5 9PB
C30 Preamp
Filename:
Notes:
Contact Engineer:
L958CT1 1.4 PSU and Control New Demod.Sch
Contact Tel: (01223) 203200Kevin Lamb
ECO No. DESCRIPTION OF CHANGE
DGND
REMOTE
TRIGGER
AC PRESENT
MUTE*
STANDBY*
R27
10R
0W125
0805
CON100
AMP
CT
1
2
3
4
L_AUDIO
R_AUDIO
PAGND
P107
P108
P109
R118
10K
0W125
0805
PAGND PAGND
R119
10K
0W125
0805
+15V(A)
AGND
AGND
-15V(A)
+15V(A)
AGND
AGND
-15V(A)
C100
100UF
25V
CFNE
C101
100UF
25V
CFNE
C102
100UF
25V
CFNE
C103
100UF
25V
CFNE
P101
C104
10N
100V
MKS2
PAGND PAGND
R100
100R
0W125
0805
PAGND PAGND
C105
10N
100V
MKS2
P102
P110
C106
10N
100V
MKS2
PAGND PAGND
R102
100R
0W125
0805
PAGND PAGND
C107
10N
100V
P118
MKS2
P111
P103
P104
P112
C108
470P
100V
0805
C109
470P
100V
0805
C110
470P
100V
0805
C111
470P
100V
0805
IC100
AD797AR
SO-8
74
3
6
2
1
5 8
R101
100R
0W125
0805
IC101
AD797AR
SO-8
74
3
6
2
1
5 8
R103
100R
0W125
0805
P105
P113
R104
47R 0W125
0805
R105
47R 0W125
0805
PAGND
L100
70R@100MHz
+15V(A)
-15V(A)
RLY100A
NEC
EB2-12NU
D100
BAV99
SOT-23
+15V(A)
-15V(A)
RLY100B
NEC
EB2-12NU
D101
BAV99
SOT-23
+15V(A)
-15V(A)
RLY101A
NEC
EB2-12NU
D102
BAV99
SOT-23
NC2
RLY101B
NEC
C2
EB2-12NU
NO2
+15V(A)
-15V(A)
D103
BAV99
SOT-23
C113
100P
100V
0805
C114
100P
100V
0805
P106
P114
P115
P116
C115
100P
100V
0805
EMCGND1
PREAMP AUDIO OUTPUTS
DIRECTBUFFERED
REAR PANEL VIEW
SCRN
P117
PAGND PAGND
10N
100V
0805
C116
100P
100V
0805 C117
SKT100
KUNMING
GOLD
0V CHS
LEFT
RIGHT
R125
10R
0W125
0805
MUTE*
L_AUDIO
+15V(A)
AGND
R_AUDIO
AGND
-15V(A)
L AUDIO
R_AUDIO
C126
100UF
25V
CFNE
C127
100UF
25V
CFNE
PAGND
PAGND
PAGND
C128
100N
50V
0805
4
3
C129
100N
50V
0805
VIN
GND
6
5
VCC
SNS+
VO+
VO-
SNS-
VEE
IC103
P135
7
8
1
P136
2
DRV135UA
SO-8
+5V(A)
R106
15K 0W125
0805
R107
15K 0W125
0805
PAGND
R108
2R2
0W125
0805
R120
47R 0W125
0805
R121
47R 0W125
0805
L101
70R@100MHz
P119
R116
100K
0W125
0805
AGND
D105
BAV99
SOT-23
P137
P138
P139
C118
470UF
25V
YK
P120
R117
100K
0W125
0805
C131
100P
100V
0805
C130
100P
100V
0805
+15V(A)
-15V(A)
C112
100N
50V
0805
PAGND
C132
100P
100V
0805
P121
CON103
Neutrik
NC3MBH-B
C119
1UF 50V YK
C120
1UF 50V YK
C125
10UF
50V
YK
P140
G
1 2
C133
10N
100V
0805
P132
+15V(A)
D106
BAV99
SOT-23
-15V(A)
21
3
3
RLY102A
NEC
EB2-12NU
HEADPHONE AMP
100mW 20-30 ohms
R109
C121
10K
33P
0W125
100V
0805
0805
P122
P123
P124
R110
C122
10K
33P
0W125
100V
0805
0805
+15V(A)
C134
100UF
25V
CFNE
AGND
AGND
RLY102B
NEC
EB2-12NU
C135
100UF
25V
CFNE
-15V(A)
C123
8
IC102
220UF
16V
YK
2
1
P126P125
R111
47K
0W125
0805
3
6
7
R112
4
5
LM4880M
C124
P133 P134
SO-8
47K
0W125
0805
220UF 16V YK
PAGND
PAGND
PAGND
R113
4R7
1W
CF
R114
4R7
1W
CF
C136
100N
50V
0805
4
3
C137
100N
50V
0805
VIN
GND
P127
P128
MUTE*
6
5
VCC
SNS+
SNS-
VEE
VO+
VO-
IC104
P141
7
8
1
P142
2
DRV135UA
SO-8
HP OUTL
HP OUTR
P146
R122
47R 0W125
0805
R123
47R 0W125
0805
EMCGND2
CON101
1
2
3
4
5
6
P145
AMP
CT
DGND
D107
BAV99
SOT-23
P143
P144
TR100
BD179
TO-126
R115
150R
0W125
0805
C139
100P
100V
0805
C138
100P
100V
0805
+15V(A)
-15V(A)
R124
150R
0W125
0805
CON104
Neutrik
NC3MBH-B
C140
100P
100V
0805
0V CHS0V CHS
CON102
AMP
CT
1
2
3
4
5
6
DRAWING TITLE
23425
A & R Cambridge Ltd.
Pembroke Avenue
Waterbeach
Cambridge CB5 9PB
+15V(A)
-15V(A)
1 2
21
3
3
G
RLY103A
NEC
EB2-12NU
C141
10N
100V
0805
HEADPHONE JACK PCB
P130
P129 P131
P147
C30 Preamp
Filename:
Notes:
Contact Engineer:
D108
BAV99
SOT-23
RLY103B
NEC
EB2-12NU
SKT101
NCL
HOSIDEN
HLJ
CL
2
L
3
R
1
CR
P148
NCR
L958CT2 1.4 Audio1.Sch
+18V(D)
RLY100C
NEC
EB2-12NU
RLY101C
NEC
EB2-12NU
RLY102C
NEC
EB2-12NU
RLY103C
NEC
EB2-12NU
D104
BAS16
SOT-323
P100
1.4R1 changed to VR3715/07/03KAL03_E215
1.3RC5 remote bus demod fix27/06/03AJD03_E191
1.2Renumbered Sorbothane21/06/03KAL03_E186
1.1Mods following listening test. Sorbothane and some caps06/06/03AJD03_E172
1.0Production release17/04/03MJT03_E119
INITIALS
Printed:
DATE
15 Jul 2003
3 3Sheet of
DRAWING NO.
L958CT2
Contact Tel: (01223) 203200Kevin Lamb
ECO No. DESCRIPTION OF CHANGE
ISSUE
Main signal path
L965C2_1.2.SCH
PCB1
PCB
L937PB_1
Power supply
L965C3_1.2.SCH
DRAWING TITLE
C30 Preamp PCB
ARCAM
Filename:
Notes:
L965C1_1.2.PRJ
03_E291 MJT 10/10/03 1.2
03_E221 KAL 18/07/03 1.1Added sorbothane, changed 470pF FKP2 and 100uF Oscon part no.
None to this sheet. Transistors Q301 & Q305 obsolete.
Replaced by 4B5171 and 4B1930 respectively
A & R Cam bridge Ltd.
Pembroke Avenue
Waterbeach
Cambridge CB5 9PB
Contact Engineer:
03_E156 KAL 02/06/03 Assy created from L937, various capacitors and sorbothane changed 1.0
ECO No. DESCRIPTION OF CHANGE
Contact Tel: (01223) 203243Kevin Lamb
INITIALS
Printed:
DATE
10-Oct-2003
13Sheet of
DRAWING NO.
A4
L965C1
ISSUE
0V_SIG
TUNER INPUT
AV INPUT
0V_SIG
0V_SIG
0V_SIG
CD INPUT
C100
1N0 SM
EMC
C121
1N0 SM
PHONO4G
DVD INPUT
PHONO4G
TAPE INPUT
C139
1N0 SM
PHONO4G
VCR INPUT
C160
1N0 SM
PHONO4G
D100
+15V -15V
BAV99W DUAL SM
SK2A
CDL1 CDL
1
F
EMC
N
0V_SIG
CDR1
PHONO4G
+15V -15V
D101
BAV99W DUAL SM
D102
+15V -15V
BAV99W DUAL SM
SK2B
TUNL1
F
N
PHONO4G
+15V -15V
+15V -15V
SK3A
TUNR1
D106
BAV99W DUAL SM
D107
BAV99W DUAL SM
AVL1
1
0V_SIG
F
N
0V_SIG
AVR1
+15V -15V
D108
BAV99W DUAL SM
D112
+15V -15V
BAV99W DUAL SM
SK3B
DVDL1
F
N
0V_SIG
DVDR1
+15V -15V
D113
BAV99W DUAL SM
D114
+15V -15V
BAV99W DUAL SM
SK4A
TAPEIL1
1
F
EMC
N
+15V -15V
+15V -15V
SK5A
TAPEIR1
D115
BAV99W DUAL SM
D116
BAV99W DUAL SM
VCRIL1
1
0V_SIG
F
EMC
N
+15V -15V
VCRIR1
D117
BAV99W DUAL SM
0V_SIG
R100
1K0 SM
R101
1K0 SM
R102
1K0 SM
R125
1K0 SM
R126
1K0 SM
R127
1K0 SM
R156
1K0 SM
R157
1K0 SM
R158
1K0 SM
R189
1K0 SM
R190
1K0 SM
R191
1K0 SM
0V_SIG
0V_SIG
0V_SIG
0V_SIG
0V_SIG
0V_SIG
0V_SIG
DVDR
0V_SIG
TAPEIL
0V_SIG
TAPEIR
0V_SIG
0V_SIG
VCRIR
0V_SIG
R103
100K SM
CDR
R104
100K SM
TUNL
R105
100K SM
TUNR
R128
100K SM
AVL
R129
100K SM
AVR
R130
100K SM
DVDL
R159
100K SM
R160
100K SM
R161
100K SM
R192
100K SM
VCRIL
R193
100K SM
R194
100K SM
CD L
C101
470P FKP2
CD R
C102
470P FKP2
0V_SIG
TUNER L
C103
470P FKP2
TUNER R
C122
470P FKP2
0V_SIG
AV L
C123
470P FKP2
AV R
C124
470P FKP2
0V_SIG
DVD L
C140
470P FKP2
DVD R
C141
470P FKP2
TAPE IN L
C142
470P FKP2
TAPE IN R
C161
470P FKP2
VCR IN L
C162
470P FKP2
VCR IN R
C163
470P FKP2
+15V
-15V
+15V
-15V
+15V
-15V
C127
100N SM
C128
100N SM
0V_SIG
0V_SIG
0V_SIG
+15V
-15V
C106
100N SM
C107
100N SM
C125
100N SM
C126
100N SM
+15V
-15V
AUX INPUT
C164
1N0 SM
AUX L
CD L
TUNER L
C104
100N SM
C105
100N SM
0V_SIG
0V_SIG
0V_SIG
+15V
-15V
C145
100N SM
C146
100N SM
VCR2
C143
100N SM
C144
100N SM
AV L
DVD L
VCR IN L
MODULE L
0V_SIG
TAP0
TAP1
TAP2
TAPE2
VCR21
TAPE 2
AUX R
CD R
TUNER R
AV R
DVD R
VCR IN R
MODULE R
TAPE0
TAPE1
TAPE 2
AUX L
CD L
TUNER L
AV L
DVD L
TAPE IN L
MODULE L
VCR01
VCR11
AUX R
CD R
TUNER R
AV R
DVD R
TAPE IN R
MODULE R
VCR0
VCR1
AUX L
CD L
TUNER L
AV L
DVD L
TAPE IN L
VCR IN L
MODULE L
LIST2
AUX R
CD R
TUNER R
AV R
DVD R
TAPE IN R
VCR IN R
MODULE R
LISTEN0
LISTEN1
LISTEN2
D118
+15V -15V
BAV99W DUAL SM
SK6
AUXIL1
1
F
EMC
N
AUXIR1
PHONO2G
+15V -15V
D119
BAV99W DUAL SM
TAPE 0
TAPE 1
0V_SIG
TAPE 0
TAPE 1
0V_SIG
VCR 2
0V_SIG
VCR 2
0V_SIG
LIST0
LIST1
0V_SIG
VCR 1
VCR 0
VCR 1
R162
22K SM
R163
22K SM
R164
22K SM
R165
22K SM
R166
22K SM
R167
22K SM
R168
22K SM
R169
22K SM
+5V
+5V
-15V
+5V
VCR 0
+5V
-15V
R195
1K0 SM
R196
1K0 SM
4
5
6
7
12
11
10
9
2
1
16
15
14
3
4
5
6
7
12
11
10
9
2
1
16
15
14
3
4
5
6
7
12
11
10
9
2
1
16
15
14
3
4
5
6
7
12
11
10
9
2
1
16
15
14
3
R170
22K SM
R171
22K SM
R172
22K SM
R173
22K SM
LISTEN 0
LISTEN 1
LISTEN 2
0V_SIG
R174
22K SM
R175
22K SM
R176
22K SM
R177
22K SM
LISTEN 0
LISTEN 1
LISTEN 2
0V_SIG
0V_SIG
0V_SIG
Z100
X0
X1
X2
X3
X4
X5
X6
X7
EN
A0
A1
A2
GND
V-
DG408DY
Z101
X0
X1
X2
X3
X4
X5
X6
X7
EN
A0
A1
A2
GND
V-
DG408DY
Z102
X0
X1
X2
X3
X4
X5
X6
X7
EN
A0
A1
A2
GND
V-
DG408DY
Z103
X0
X1
X2
X3
X4
X5
X6
X7
EN
A0
A1
A2
GND
V-
DG408DY
+5V
-15V
+5V
-15V
AUXL
R197
100K SM
AUXR
R198
100K SM
AUX L
AUX R
V+
D
V+
D
V+
D
V+
D
4
5
6
7
12
11
10
9
2
1
16
15
14
3
4
5
6
7
12
11
10
9
2
1
16
15
14
3
+15V
13
8
0V_SIG
+15V-15V
13
8
0V_SIG
+15V
13
8
0V_SIG
+15V-15V
13
8
0V_SIG
Z104
X0
X1
X2
X3
X4
X5
X6
X7
EN
A0
A1
A2
GND
V-
DG408DY
Z105
X0
X1
X2
X3
X4
X5
X6
X7
EN
A0
A1
A2
GND
V-
DG408DY
SK103
1
2
3
4
5
6
7
TO PHONO PCB
8
AMPCT8
C165
470P FKP2
C166
470P FKP2
R106
1M0 SM
R107
1M0 SM
R131
1M0 SM
R132
1M0 SM
V+
D
V+
D
0V_SIG
13
8
13
8
AUX R
AUX L
+15V
0V_SIG
+15V
0V_SIG
+15V1
0V_HF
+15V
AUXR1
AUXL1
-15V1
-15V
3
2
5
6
3
2
5
6
C147
100N PE
C167
100N PE
+15V -15V
D103
Z109A
TL072 SM
Z109B
TL072 SM
Z110A
TL072 SM
Z110B
TL072 SM
C148
22P SM
R178
22K SM
2
Z115A
3
OPA2134PA SM
C149
22P SM
R179
22K SM
2
Z116A
3
OPA2134PA SM
Z109C
TL072 SM
-15V
Z113C
TL072 SM
-15V
BAV99W DUAL SM
R108
1
47R SM
C108
100P SM
+15V -15V
D104
BAV99W DUAL SM
R109
7
47R SM
C109
100P SM
+15V -15V
D109
BAV99W DUAL SM
R133
1
47R SM
C129
100P SM
+15V -15V
D110
BAV99W DUAL SM
R134
7
47R SM
C130
100P SM
Z115_1A
1
R180
100K SM
R199
100K SM
84
84
7
OPA2134PA SM
+15V
1
-15V
7
OPA2134PA SM
C168
100N SM
0V_SIG 0V_SIG 0V_SIG 0V_SIG
C169
100N SM
-15V2
C170
100N SM
0V_SIG 0V_SIG 0V_SIG 0V_SIG 0V_SIG
C171
100N SM
0V_SIG
TAPE02
0V_SIG
VCR02
C150
470N PE
Z115B
+
C188
22U EL SP OS
+
C189
22U EL SP OS
Z116_1A
C151
470N PE
Z116B
Z110C
TL072 SM
Z114C
TL072 SM
TAPEO1
VCRO1
6
5
0V_SIG
6
5
84
84
SK4B
F
N
PHONO4G
VCR OUTPUT
SK5B
F
N
PHONO4G
R183
1M0 SM
0V_SIG
R184
1M0 SM
0V_SIG
C172
100N SM
C173
100N SM
C174
100N SM
C175
100N SM
TAPE OUTPUT
TONE*
C152
100N SM
TONE*
Z111C
TL072 SM
Z115C
OPA2134PA SM
0V_SIG
84
84
1
2
3
4
6
7
8
C176
100N SM
C177
100N SM
C178
100N SM
C179
100N SM
+
C110
100U EL
0V_SIG
+
C131
100U EL
0V_SIG
Z106
SEL1
D1
S1
VGND5VL
S4
D4
SEL4
DG413DY
+15V2
Z112C
TL072 SM
OPA2134PA SM
SEL2
SEL3
+15V
84
84
Z116C
Z111_1
7
Z111B
TL072 SM
470N PE
470N PE
+5V
Z113_1
7
Z113B
TL072 SM
470N PE
470N PE
+5V
C155
100N SM
4
5
13
12
R114
22K SM
C112
C192
R139
22K SM
C133
C193
LIN
LGND
RIN
RGND
D105
BAV99W DUAL SM
1618
Z108D
17
DS1844
5
6
D111
BAV99W DUAL SM
62
Z108B
7
DS1844
5
6
0V_SIG
R185
22R SM
Z107_1
7
DVCC
DGND11XCS6DATA9CCLK10XMUTE8AGND
DRAWING TITLE
1
SCLK
SDATA
SLOAD
C186
100N SM
0V_SIG
AVCC
+5V
C156
100N SM
0V_SIG
ARCAM
A & R Cambridge Ltd.
Pembroke Avenue
Waterbeach
Cambridge CB5 9PB
0V_SIG
Z112_3
1519
Z108A
14
DS1844
Z108_19
C113
470N PE
R115
2K7 SM
R116
2K7 SM
Z114_3
Z108_3
C134
470N PE
R140
2K7 SM
R141
2K7 SM
LMO
RFO
RMO
16
R181
10K SM
0V_SIG
LFO
0V_SIG
53
DS1844
+
C157
22U EL SP OS
3
2
14
15
Z107
VSDVC
C114
CFKP2 63V 2N2
R117
5K6 SM
0V_SIG
Z108C
4
C135
CFKP2 63V 2N2
R142
5K6 SM
2
3
0V SIG
6
5
0V_SIG
+
C187
10U EL
3
2
Z117A
OPA2134PA SM
Z117B
OPA2134PA SM
C30 Preamp PCB
Filename:
Notes:
Contact Engineer :
Z112A
TL072 SM
3
2
C115
22P SM
R118
22K SM
Z114A
TL072 SM
C136
22P SM
R143
22K SM
+15V
+
C190
22U EL SP OS
+
C191
22U EL SP OS
-15V
C158
22P SM
1
C159
22P SM
7
D120
BAS16W SM
L965C2 1.2.SCH
1
1
0V_SIG
Z112B
TL072 SM
Z112_1
5
6
Z114B
Z114_1
TL072 SM
5
6
+15V -15V
SK102_1
R186
47R SM
SK102_3
R187
47R SM
+5V
+-RLY100C
RLY DPDT 5V SM
Q100
BC849B
0V_D
Contact Tel: (01223) 203243Kevin Lamb
7
7
0V_SIG
D121
BAV99W DUAL SM
RLY DPDT 5V SM
0V_SIG
R203
4K7 SM
Z112_7
10U CERAFINE
R119
22K SM
R120
22K SM
+
C116
10U CERAFINE
0V_SIG
C138
+
10U CERAFINE
R144
22K SM
R145
22K SM
+
C137
10U CERAFINE
D122
BAV99W DUAL SM
RLY100A
03_E291 MJT 10/10/03 1.2
03_E221 KAL 18/07/03 1.1Added sorbothane, changed 470pF FKP2 and 100uF Oscon part no.
03_E156 KAL 02/06/03 Assy created from L937, various capacitors and sorbothane changed 1.0
ECO No. DESCRIPTION OF CHANGE
C117
Z106_14
+
Z106_11Z114_7
R146
22K SM
RLY100B
RLY DPDT 5V SM
MUTE*
INITIALS
Printed:
R121
TONEID
22K SM
SK102
1
2
3
4
AMPCT4
TO POWER AMP I/P
DATE
10 Oct 2003
+5V
C118
20
100N SM
Z108E
VCC
R147
22K SM
R148
22K SM
R149
22K SM
R150
22K SM
SLOAD
R188
PS
R/W
DOUT
GND
10
0V_SIG
SCLK
AUX L
AUX R
CD L
CD R
TUNER L
TUNER R
AV L
AV R
DVD L
DVD R
TAPE IN L
TAPE IN R
VCR IN L
VCR IN R
MODULE L
MODULE R
E826AP
E826AP
DRAWING NO.
A2
1
8
11
R204
10K SM
C119
10N SM
R151
22K SM
R152
22K SM
R153
22K SM
R154
22K SM
R155
22K SM
0V_MODULE
ITEM1
ITEM2
13
SCLK
SDATA
IC DS1844
R122
2R2 SM
R124
2R2 SM
R123
2R2 SM
LISTEN 0
LISTEN 1
LISTEN 2
VCR 0
VCR 1
VCR 2
TAPE 0
TAPE 1
TAPE 2
TONE*
TONEID
0V_SLOAD
0V_SIG
12
9
MUTE*
SDATA
CLK
DIN
RST
0V_SCLK
10K SM
SCLK
SDATA
TONEID
0V_TONEID
0V_SDATA
0V_SCLK
0V_D
0V_TONEID
0V_SDATA
None to this sheet. Transistors Q301 & Q305 obsolete.
Replaced by 4B5171 and 4B1930 respectively
23Sheet of
+
C120
10U EL
SK100
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
FFC22V1MM
SK101
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
FFC30V SM
L965C2
TO MICRO / DISPLAY PCB
TO PLUG IN MODULE PCB
ISSUE
+5V
R110
2K2 SM
Z111_3
R112
22K SM
R111
2K2 SM
Z115_1B
+5V
R135
2K2 SM
R137
22K SM
R136
2K2 SM
Z116_1B
22U EL SP OS
TONE*
+5V
C180
100N SM
C181
100N SM
C182
100N SM
C183
100N SM
/TONE
0V_SIG
TONE*
OPA2134PA SM
16
15
D2
14
S2
13
V+
12
11
S3
10
D3
9
R113
22K SM
+
C111
10U CERAFINE
Z113_3
R138
22K SM
+
C132
10U CERAFINE
C154
+15V-15V
C153
100N SM
+15V
84
Z117C
Z111A
TL072 SM
3
2
Z113A
TL072 SM
3
2
+
Z107_4
Z107_13
0V_SIG
0V_SDATA
0V_SLOAD
0V_SCLK
C184
100N SM
C185
100N SM
Z111_7
Z113_7
0V_SIG
1
1
R182
100R SM
R200
2R2 SM
R201
2R2 SM
R202
2R2 SM
D302
SK300
MOLEXPWR4
3
4
1
2
F300
T2A SM
F301
T2A SM
AC1
C307
470N PE
AC2
D300
S1D
C308
100N SM
C309
100N SM
D301
S1D
UR+
+
C300
1000u 35V
+
C310
1000u 35V
BAS16W SM
Q300
J112
R300
330R SM
C314
100N PE
C315
100N PE
Q303
J112
Q305
2SA1930
Q306
BC846B
D310+
+
C302
22U EL SP OS
+
C312
22U EL SP OS
D311-
D310
15V 350MW SM
D311
15V 350MW SM
+15V
+15V3
+
C303
100U EL SA OS
+
C313
100U EL SA OS
I
C304
100N SM
Z301
LM317T
Vin
D304
BAS16W SM
Vout
ADJ
A
+3.75V
R302
1K2 SM
R307
220R SM
0V_PSU
O
D305
BAS16W SM
C305
100N PE
R303
470R SM
C306
100U EL SA OS
+5V
+5V
+
D306
S1D
D307
S1D
UR-
DRAWING TITLE
R304
330R SM
Q301
2SC5171
D308
BAS16W SM
C30 Preamp PCB
Q307
BC856B
-15V
-15V3
-15V
SP300
STAR POINT 4
0V_HF 0V_MODULE
0V_PSU
0V_SIG
0V_SIG
+15V
0V_PSU
0V_MODULE
SK301
1
2
3
4
IDC4S
ARCAM
A & R Cam bridge Ltd.
Pembroke Avenue
Waterbeach
Cambridge CB5 9PB
Filename:
Notes:
Contact Engineer:
L965C3_1.2.SCH
03_E291 MJT 10/10/03 1.2
03_E221 KAL 18/07/03 1.1Added sorbothane, changed 470pF FKP2 and 100uF Oscon part no.
03_E156 KAL 02/06/03 Assy created from L937, various capacitors and sorbothane changed 1.0
ECO No. DESCRIPTION OF CHANGE
Contact Tel: (01223) 203243Kevin Lamb
INITIALS
Printed:
DATE
10-Oct-2003
Transistors Q301 & Q305 obsolete.
Replaced by 4B5171 and 4B1930 respectively
33Sheet of
DRAWING NO.
A4
ISSUE
L965C3
A32 FMJ DISPLAY PCB
87654321
D
D
L928CT_B.1
L928CT_2_B.3.SCH
MICRO
C
CHASSIS 1
(BY SK3)
0V_D
C39
1N0 SM
FD_1
FIDUCIAL
FIX7
FIXING HOLE 3.5
FIX1
FIXING HOLE 3.5
FD_2
FIDUCIAL
FIX2
FIXING HOLE 3.5
0V_D 0V_D 0V_D 0V_D
FIX8
FIXING HOLE 3.5
C40
1N0 SM
FIX10
FIXING HOLE 3.5
C41
1N0 SM
FIX9
FIXING HOLE 3.2
FIX3
FIXING HOLE 3.5
FIX5
FIXING HOLE 3.5
C43
1N0 SM
FIX6
FIXING HOLE 3.5
FIX11
FIXING HOLE 3.5
C44
1N0 SM
FIX13
FIXING HOLE 3.5
C
C38
1N0 SM
0V_D
FIX12
FIXING HOLE 3.2
B
CHASSIS 2
(BY SK1)
0V_D
C45
1N0 SM
PCB1
PCB
L928PB_B
C46
1N0 SM
C47
1N0 SM
0V_D0V_D
CHASSIS 3
(BY SK2)
C48
1N0 SM
C49
1N0 SM
0V_D0V_D
C37
1N0 SM
0V_D
B
A
DRAWING TITLE
A32 FMJ AMP DISPLAY PCB
WAF 26/9/01 STICKY PADS RENUMBERED B.3
Circuit Diagram
23425
A & R Cambridge Ltd.
Pembroke Avenue
Denny Industrial Centre
Waterbeach
Cambridge CB5 9PB
1 2 3 4 5 6 7 8
Notes:
ECO No. DESCRIPTION OF CHANGE
Filename
J:\Released_Documents\Native_format_files\Protel_DDB\L928_B.3.Ddb - Documents\L928CT_1_B.3.PRJ
Date Printed
JBR 10/9/01 PRE PRODUCTION RELEASE B.2
WAF 9/08/01 UPDATED PROTOTYPE
CL INITIAL PROTOTYPE25/04/01 A.0
INITIALS
10-Oct-2001
DATE
Drawn by:
CL
1 2Sheet of
DRAWING NO.
A
B.0
ISSUE
L928CT1
87654321
SP7
LED
SPACER
PHONO/
AV DVD CD TUNER VCR
Q1
BC847B
D
R29
10K SM R30
R33
330R SM
R34
150R SM
Q2
BC847B
10K SM
R1
10K SM
SW6
TACTSW A1505
R2
10K SM
SW12
TACTSW A1505
R3
10K SM
SW11
TACTSW A1505
R4
10K SM
SW8
TACTSW A1505
R5
10K SM
SW7
TACTSW A1505
R6
10K SM
SW13
TACTSW A1505
R7
10K SM
SW14
TACTSW A1505
R8
10K SM
SW15
TACTSW A1505
POWER SP1SP2TONE DOWN UP ENTERMODE RECORD SELECT
R68
10K SM
SW17
TACTSW A1505
R9
10K SM
SW16
TACTSW A1505
R10
10K SM
SW1
TACTSW A1505
R11
10K SM
SW4
TACTSW A1505
R12
10K SM
SW2
TACTSW A1505
AUX TAPE
R13
10K SM
SW5
TACTSW A1505
R14
10K SM
SW3
TACTSW A1505
R15
10K SM
SW10
TACTSW A1505
R16
10K SM
SW9
TACTSW A1505
0V_D
IND12
LED11
IND11
BUT11
BUT2
BUT3
BUT4
IC7B
BUT13
BUT6
BUT7
BUT8
BUT17
BUT9
BUT12
BUT14
BUT1
BUT10
BUT5
BUT15
BUT16
SPACER F195
R17
330R SM
Q_65 Q_66 Q_67 Q_68 Q_69 Q_70 Q_71 Q_72 Q_73 Q_74
LED7
IND10
LED GREEN
SP8
LED
SPACER
SPACER F195
R18
330R SM
LED8
IND2
LED GREEN
SP6
LED
SPACER
SPACER F195
R19
330R SM
LED6
IND8
LED GREEN
SP3
LED
SPACER
SPACER F195
R20
330R SM
IND1
LED GREEN
LED3
LED GREEN
SP10
LED
SPACER
SPACER F195
R21
330R SM
LED10
IND5
LED GREEN
SP9
LED
SPACER
SPACER F195
R22
330R SM
LED9
IND6
SP1
LED
SPACER F195
R25
330R SM
IND9
LED GREEN
SPACER
LED1
LED GREEN
SP4
LED
SPACER
SPACER F195
R24
330R SM
LED4
IND4
SP2
LED
SPACER
SPACER F195
R23
330R SM
IND3
LED GREEN
SP5
SPACER F195
LED2
LED GREEN
LED
SPACER
+5V
R31
330R SM
LED5
IND7
D
5
R
LED RED/GRN 3MM
G
6
LM393A SM
0V_D
7
+5V
0V_D
LEFTAUDIO
10U EL SM
C11
+
R41
100K SM
+5V
R43
100K SM
3
Q 35
IC7A
LM393A SM
1
+5V
R49
10K SM
R480R0 SM
TRANSMIT
RECEIVE
R50
10K SM
Q_34
SAMHOLD
+5V
R37
10K SM
2V7
1
5
6
IC6A
IC6B
LM393A SM
0V5
2
3
7
SAMDATA
0V_D
R40
4K7 SM
R38
1K2 SM
2
Q_53
R42
100K SM
C
R44
100K SM
Q_47
+5V
C9
LM393A SM
0V_D
100N SM
Programming adaptor
PR_GND
PR TXD
PR MD
PR RESET
+5V
Q_39
0V_D
C7
100N SM
0V_D
TRANSMIT
RESPIN
SAMHOLD
Q_37
X1
16MHZ SM
Q_38
+5V
IC2
3
2
4
1
DS1233 SM
Vcc
Res
Gnd
Gnd
0V_D
To preamp board
SK3
22
Q_1
21
Q_2
20
Q_3
19
Q_4
18
Q_5
17
Q_6
16
Q_7
15
Q_8
14
Q_9
13
12
Q_10
11
10
Q_11
9
Q_12
8
Q 117
7
Q_14
6
Q 118
5
Q_15
4
Q_119
3
Q_16
2
Q_120
1
Q_17
FFC 22W 1MM HOR
SK4
F1CLOCK
F2CLOCK
PHASEA
PHASEB
SEL8
SEL9
MUTE
TONE
ACPRESENT
IRIN
DCPROT
VIPROT
Q_55
RECEIVE
VPROG
PB0
PR_VCC
PR RXD
PR VPP
PR PMODE
12
34
56
78
910
1112
+5V
+
C14
10U EL SM
0V_D
+5V
Q_56
C4
100N SM
Q 86
Q 87
Q 88
Q 89
Q 90
Q_91
0V_D
C50B 100PX4 SM
C50D 100PX4 SM
C51B 100PX4 SM
C51D 100PX4 SM
C52B 100PX4 SM
C52D 100PX4 SM
C53B 100PX4 SM
C53D 100PX4 SM
C54B 100PX4 SM
C54D 100PX4 SM
C55B 100PX4 SM
C55D 100PX4 SM
AVcc
MD2
MD1
MD0
P6 4/RD
P6 3/AS
Vcc
XTAL
EXTAL
Vss
NM1
RES
STBY
Vss
H8/3048F
Q_98
C3
100N SM
IC1
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
0V_D
0V_D
+5V
C17
+5V
R55
10K SM
Q_51
D3
BAS16W SM
Q 52
B
DISPDAT
DISPCLK
DISPBLK
DISPLAT
C31
10P SM
R64
100R SM
R65
100R SM
R67
100R SM
C32
10P SM
Q_44
Q 46
Q_45
R66
100R SM
Q_42
Q_43
100N SM
PB0
SEL7
SEL6
SEL5
SEL4
SEL3
SEL2
SEL1
VPROG
TRANSMIT
RECEIVE
TONEID
SDATA
SLOAD
SCLK
0V_D
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
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
0V_D
99
100
PA7
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
98
PA6
97
PA5
96
PA4
PA3
95
94
PA2
93
PA1
92
PA0
91
Vss
P8 4/CS0
89
90
P8 2/IRQ2
P8 3/IRQ3
H8/3048F
87
88
P8 1/IRQ1
85
86
AVss
P8 0/IRQ0
82
83
84
P7 5/AN5
P7 6/AN6/DA0
P7 7/AN7/DA1
80
81
P7 3/AN3
P7 4/AN4
79
P7 2/AN2
77
78
P7 0/AN0
P7 1/AN1
76
Vref
P6 6/LWR
P6 5/HWR
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
0V_D
+5V
R51
100R SM
Q_41
Q_40
+5V
R32
10K SM
5
6WP7
IC5
24C02 SM
SCL
VSS
SDA
VDD
A0
8
C8
100N SM
4
A
C5
100N SM
0V_D
Q 99
Q 100
BUT13
IND10
Q 101
Q 102
BUT11
IND8
Q 103
Q 104
BUT14
IND4
Q 105
Q 106
BUT12
IND9
Q 107
Q 108
BUT10
IND7
Q 109
Q 110
BUT15
IND5
Q_111
Q 112
BUT16
IND6
Q 113
Q 114
IND12
IND11
Q 96
Q 97
IND2
BUT4
Q 94
Q 95
IND1
BUT5
50
Q 92
Q 93
BUT3
BUT1
1A12A23
0V_D
CHASSIS 1
HEADER 7X2HORIZ
R26
10K SM
STANDBY
SP1ON
SP2ON
THERMPROT
RESPIN
SAMTX2
SAMRX2
BUT17
BUT9
BUT8
BUT7
BUT6
BUT2
IND3
0V_D
C50A 100PX4 SM
C50C 100PX4 SM
C51A 100PX4 SM
C51C 100PX4 SM
C52A 100PX4 SM
C52C 100PX4 SM
C53A 100PX4 SM
C53C 100PX4 SM
C54A 100PX4 SM
C54C 100PX4 SM
C55A 100PX4 SM
C55C 100PX4 SM
1314
D2
BAS16W SM
+5V
R35
10K SM
SAMTX2
SAMRX2
C1
18P SM
0V_D
C2
18P SM
DS1233
SEL1
SEL2
SEL3
SEL4
SEL5
SEL6
SEL7
SEL8
SEL9
LEFTAUDIO
MUTE
TONE
TONEID
SDATA
SLOAD
SCLK
Q_115
R72
Q_21 Q_22
R36
10K SM
Q_59
2V7
+5V
R45
10K SM
IC8B
7
LM393A SM
PLACE ONE ON TOP OF
THE OTHER UNDER RX1
C12
100N SM
R70
R71
2R2 SM
2R2 SM
2R2 SM
0V52V7
IC8A
3
2
LM393A SM
R69
2R2 SM
R39
2K2 SM
0V_D
1
0V5
6
5
SAMDATA
SAMBUSY
Q_19
Q_20
+5V
+
C33
220U EL
+
0V_D
(FIT CLOSE TO SK1)
+SUP VFD VDD2
R54
3K3 MF
D1
ZENER 400MW 33V
+5V
R47
4K7 SM
SAMBUSY
R46
1K2 SM
0V_D
Q_54
SP
IR RX
SUPPORT PAD
IR RX SUPPORT PAD
SBX1610-52/PIC-26043TM2
SP103
IR RX
SUPPORT PAD
IR RX SUPPORT PAD
+5V
SK2
1
2
3
4
5
AMPCT5
0V_D
C34
220U EL
Q5
BD179 NPN TO-126
Q_75
+
C26
10U EL SM
DRAWING TITLE
A32 FMJ AMP DISPLAY PCB
23425
2
RX1
O/P
O/P
Case
0V_D
0V_D
+5V
3
+5V
Case
Notes:
IROUT
GND
GND +5V
1
SW18
ALPS_ENCODER
4
5
C60C 100PX4 SM
C60A 100PX4 SM
C61C 100PX4 SM
C61A 100PX4 SM
C62C 100PX4 SM
C62A 100PX4 SM
C63C 100PX4 SM
C63B 100PX4 SM
C63A 100PX4 SM
CHASSIS 2
Q_23
+
C28
10U EL SM
R76
10K SM
C6
100N SM
A
B
C
C13
100N SM
R75
10K SM
+5V
R27
R2810K SM
10K SM
1
2
3
0V_D
C60D 100PX4 SM
C60B 100PX4 SM
C61D 100PX4 SM
C61B 100PX4 SM
C62D 100PX4 SM
C62B 100PX4 SM
C63D 100PX4 SM
84
IC6C
LM393A SM
Circuit Diagram
R73
10K SM
Q3
BC847B
0V_D
Q 58
Q_57
PHASEA
PHASEB
To power amp / PSU
FFC 14W 2.54MM HOR
C10
100N SM
+5V
R74
10K SM
IRIN
Q4
BC847B
SK1
14
13
12
11
10
9
8
7
6
5
4
3
2
1
84
IC7C
LM393A SM
+5V
R56
10K SM
R57
10K SM
0V_D
+5V
0V_D
F1 to F2 = 4Vac 150mA
VDD2 = 40Vdc 20mA
Graphics Display
+5V
17
IRIN
SP101
DOUBLE SIDED
STICKY PAD
10 X 15MM
STICKY PAD DS 10X15MM
SP102
DOUBLE SIDED
STICKY PAD
10 X 15MM
STICKY PAD DS 10X15MM
DC1
DISP1
B1013
F11F12F13SIN4VDD15SOUT6LAT7BLK8CLK9VSS10VSS11VDD212F215F216F2
DISPLAY CRADLE
E916PM
DISPLAY CRADLE E916PM
F1CLOCK
Q_50
F2CLOCK
DC2
DISPLAY CRADLE
E916PM
DISPLAY CRADLE E916PM
R52
Q_79
Q_78
100R SM
R53
100R SM
IC11A
AD8532 SM
3
2
5
6
IC11B
AD8532 SM
Q_82
1
Q_80
7
Q_81
DISPDAT
DISPLAT
Q_49
R58
0R0 SM
R59
0R0 SM
0V_D
DISPCLK
DISPBLK
Q_83
Q_84
Q_85
Q_48
+SUP
Q_121
STANDBY
SP1ON
SP2ON
THERMPROT
VIPROT
DCPROT
ACPRESENT
IRIN
Q_122
Q_123
Q_124
Q_125
Q_126
Q_127
Q_128
Q_129
+5V
Q_64
C15
100N SM
84
IC8C
LM393A SM
C16
100N SM
84
IC11C
AD8532 SM
Q_116
C25
100N SM
+
C29
100U EL SM
0V_D
WAF 26/9/01 STICKY PADS RENUMBERED B.3
JBR 10/9/01 PRE PRODUCTION RELEASE B 2
WAF 9/08/01 UPDATED PROTOTYPE
VFD_VDD2
C
B
A
B.0
A & R Cambridge Ltd.
Pembroke Avenue
0V_D
1 2 3 4 5 6 7 8
Denny Industrial Centre
Waterbeach
Cambridge CB5 9PB
ECO No. DESCRIPTION OF CHANGE
Filename
J:\Released Documents\Native format files\Protel DDB\L928 B.3.Ddb - Documents\L928CT 2 B 3 SCH
Date Printed
CL 25/04/01 INITIAL PROTOTYPE
INITIALS
10-Oct-2001
DATE
Drawn by:
CL
2 2Sheet of
DRAWING NO.
L928CT2
A.0
ISSUE
87654321
D
C
LEFT CHANNEL
C1
100N CD
SK1
PHONO2HG
EMC
1
0V_SIG
0V_SIG
Q_1
Q_2
L870C2_2.0.SCH
LEFT IN LEFT OUT
RIGHT CHANNEL
L870C3 2.0.SCH
RIGHT N RIGHT OUT
Q_3
Q_4
+15V
Q_6
-15V
0V_HF0V_SIG
SK2
1
2
3
4
5
6
7
8
AMPCT8
Q_5
Q_7 Q_8
D
C
B
A
PCB1
PCB
L870PB_2
1 2 3 4 5 6 7 8
EL1
Update Box
UPDATE_BOX
DRAWING TITLE
A85 PHONO STAGE - TOP LEVEL
23425
A & R Cambridge Ltd.
Pembroke Avenue
Denny Industrial Centre
Waterbeach
Cambridge CB5 9PB
Notes
Filename
G:\DATA\ECO\ECO AGENDA\01 1070 l870 A85 PHONO ISSUE2\L870 2.0.ddb - L870c1 2.0.PRJ
Circuit Diagram
01_1070 JAG 17/4/01 updated pcb and scm 2
00_1051 JAG 22/3/01 PRODUCTION ISSUE 1
ECO No. DESCRIPTION OF CHANGE
INITIALS
Date Printed
DATE
Drawn by:
JBR23-Apr-2001
1 3Sheet of
DRAWING NO.
L870C1
B
A
ISSUE
Loading...