Arcam P85-3, P85, A85 Service Manual

Service Manual

DiVA A85, P85 & P85/3
Amplifi ers

A85

Issue 2.0

ARCAM

Contents List

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Contents list

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Circuit description

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Service guide

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Circuit diagrams

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Component overlays

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Circuit board parts list

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General assembly parts list

Pre-amplifier circuit description

The A85 preampli fier is a high-performanc e, DC coupled design
with microproc essor control of in put select, two in dependent tap e
loops, electronic volume control, tone bypass and electronic tone
control.

It features a discrete power supply and low-noise linear circuitry to
obtain very good distortion and noise performance, suitable for
high quality sourc e m aterial such as CD or DVD-A.

Input switching

Each of the inputs has a pair of diodes to the ±15V rails to prevent
static spikes from causing damage t o the CMOS multip lexers. In
addition, there is a simple resistor-capacitor filter with a corner
frequency of approximately 340kHz to remove any unwanted high
frequency interference from the signal. This uses high-quality
polypropylene capacitors for best performance.

Z104 and Z105 are the main input select multipl exers, which are
configured in a ‘virtual earth’ unity gain arrangement with Z115
and Z116. This arrangement is slightly lower distortion than the
‘normal’ one, at th e cost of a slightly higher nois e floor. It is an
inverting configuration, which is restored to correct polarity by the
inverting elect r onic volume control which follows.

Z115B and Z116B are integrating servos, which take out any DC
from the input signal before the following stages. The servos are 2­pole, with a passive 2
the left channel) to remove broadband noise from the output of the
servo and improve speed of response.

Z100 thru Z103 are the input selectors for t he 2 tape loops . These
are normal non-inverting selectors which are buffered before being
passed on to the phono sockets.

Z109A output is decoupled by R108 which is included in the
feedback path . Local h igh freq u ency feed ba ck occu rs aroun d C108
to allow the tape loop output to be very low impedance, whilst
being stable into a capacitive load such as may be presented by a
screened in terconnect cable. This is the same for all tape outputs.

Z106 is configured as a double pole changeover switch, used to
select the tone controls. The tone controls are bypassed when not
required so that the noise and distortion can be minimised.

Tone control circuit

The tone control circuit is a non-inverting one, using a gyrated
‘bell’ filter f o r the bass and a simple shelving filter for the t r eble.

Left channel description

The input is attenuated by 6dB and biased to a volt age of +2.5V
DC by C111, R113, R112, R110, R111 and C110 . This is so the
signals fall within the 0 - 5VDC required by the digital
potentiometer Z108.

Z111B and its associated components form an active equivalent of
a series resonan t LCR circui t. This has a n impedance m inimum of

5.4k at around 80Hz with Q=0.7 The reason the bass is done as a
band-boost filter rather than a shelving filter is so that you can
boost the ‘real’ b as s wit hout c ausi ng lot s of s u b- aud i o lou dsp eak er
cone excursion which wastes power and may damage the drive
units.

nd

pole being formed by R180 and C147 (for

The digital pots Z108D and Z108A control the bass and treble
respectively. Th is is done by moving the wiper conn ected to the
frequency-sensitive impedance between the non-inverting and
inverting terminals of Z112A, effectively changing the ratio of
feedback boost and feed-forward attenuation of the circuit at the
desired frequencies, thus providing a EQ gain control that is
symmetrical on a logarithmic scale, with the use of a linear pot.

Z112B provides the 6dB of gain necessary to bring the nominal
signal level back to unity. C116 and C117 remove the 2.5VDC
offset from th e output, to preven t clunks when th e tone controls
are activated.

Z108 is controlled by a simple 3-wire serial interface from the
microprocessor. Each of th e digit al lin es has it s own groun d return
to minimise electromagnetic interference. They are connected
together only at the GND pin of the IC.

Volume control

Z107 is a VSDVC electronic volume control IC. It works, in
conjunction with an external op-amp , by varying t he feed-for ward
and feedback resi stors in an inverting gai n configuration. In th is
way, it can allow output signal swings of up to 22Vpp whilst
operating from a sin gle +5VDC power supply. Also, it allows th e
user the choice of external ci rcuitry to fine-tune the p erformance.
The gain is controlled from th e microprocessor via a 3 -wire serial
interface. The analogue supply rail is derived from the local +5V
via R185 and C156 // C157.

Z117 is the output op-amp. Its outputs a re decoupled via R186,
R187, C158 and C159 so that it has a low output impedance but
can drive cable capacitance without oscillation. R186 and R187
are included in the audio frequency feedback loop to reduce output
impedance when driving ‘difficult’ cables.

RLY100 is a mute relay which shunts the preamp output to
ground. This is to prevent thumps and squeals when the units is
powered up or down.

Power supply

The transformer winding is connected to SK300. The voltage is
rectified and smoothed by D300, D301, D306, D307 and C300,
C310. The un regulated voltage sh ould be around ±27VDC. F300
and F301 are secondary fuses, as the low power preamp winding
would not blow the primary fuses if short circuited.

The voltage regulators a re discrete compound emi tter followers. I
will describe the +15V supply as the negative is essentially an
exact mirror image.

Q300 and R300 act as a constant current source, supplying around
7mA into D310. C302 and C314 reduce ripple and broadband
noise on the zen er diode. Q3 05 and Q306 form a complementary
Darlington NPN transistor which is configured as an emitter
follower, produ cing the + 15VDC at its output. C303 is to pr ovide
bulk charge stora ge an d t o reduce t he AC out put impedanc e of th e
power supply. D302 prevents reverse bias of the supply during
power down.

Z301 is a conventional LM317 type circuit to drop the +15V rail
down to +5V for the tone and volume control circuits.

Star point SP300 explicitly connects the differently named ground
nets together at one point, to minimise hum.

Amplifier & PSU Circuit Description

L882PB is the printed circuit board that provides the power supply
and output stage amplifiers for the A85 integrated and power
amplifiers.
Its function is to:

1. Drive the loudspeakers(!)

2. Provide an (always on) auxiliary 5VDC supply for the micro
controller and display interface

3. Receive logic signals from the micro controller to turn on
the main amp lifier supply rela y (mains) and connect either
pair of speaker output sockets

4. Send logic signals to the micro controller pertaining to the
state of the amplifiers (short circuit protection, DC offset
protection, t hermal protection)

5. Receive and demodulate RC5 remote style control codes via
the rear pan el jack and trans mit them to the micr o controller

6. Send a 12V trigger ou tput via the rea r pan el jack for con trol
of an auxiliary power amp when the unit is on

7. Receive a 12V trigger input from the rear jack (for u s e in the
power amp only version)

8. Drive a pair of headphones via attenuating resistor networks

The power amplifier is a symmetrical, class B, bipolar junction
transistor output, current-feedback design (of which more later)
with DC-coupled signal and feedback paths, featuring an active
integrating volta ge servo to control DC offsets.

It features ‘instantaneous’ safe operating area protection in
addition to sending a signal to the micro to turn off the output
relays in the even t of user or thermal ove rload. Since it i s a DC­coupled desi gn, the unit senses DC at the output and triggers the
micro to turn of f the loudspeak er relays in the even t of excessive
levels (possibly due to a faulty source component or short circuit
output transistor).

The output s tage uses Sank en specia lised ‘audio a mplifier’ pow er
bipolar Darlington transistors which are optimised for use with this
type of topology. Consequently the unit has excellent measured
performance in terms of noise, slew rate, output impedance and
distortion (harmonic and intermodulated) and is essentially load
invariant (to a first order th e measu red p erforman ce i s ind epend ent
of the load impedance).

L882 Circuit Sheet 1

The audio input to the amplifier is connected to SK102 (which
connects to the output of the preamp PCB). This signal is passed
on via SK104A which forms the preamp out connection to the
outside world.

SK104B provides the power amp input connection, with switch
SW100 selecting between pre / power and integrated modes. The
unit is wired as a preamp / power amp combination with the switch
depressed, allowing the user to insert a processor or other function
(e.g. graph ic EQ) between th e output of th e preamp and th e input
of the power amp. With the switch in the ‘out’ position the power
amp input socket is ignored and the input to the power amp is
connected internally to the output of the preamp. PL100 and
PL101 are ‘handbag’ links fitted to the power amp only version to
connect both pairs of phono sockets in parallel for daisy chaining
(as there is no preamp output on a power amp).

Relays RLY100 and RLY101 switch the two pairs of loudspeaker
output sockets and are controlled by the micro lines describes
above. Transistors TR100 and TR101 operate in ‘constant current
sink’ mode which allow relay current to be approximately constant
although the main power supply rails will vary with mains input
and load conditions. The current is around 20mA per relay.

Star point SP100 is the ground ‘mecca’ for the entire amplifier
(comprising a ll three PCBs wit hin the unit ). All of the sepa rately
named grounds are joined explicitly at this point. Different named
grounds are used to ensure that no two ‘different’ grounds share
copper, which could compromise the noise, distortion or crosstalk
performance of the amplifier.

The loudspeaker output signals are passed to socket SK106 which
connects to SK107 and onto the headphone output via the
attenuation resistors R103 thru R106.

The hierarc hy con tai ning t he oth er sheet s i s self expla na tory. E ach
of the port names shown on the top sheet connects t o the port of
the same na me on the lower sheets.

L882 Circuit Sheet 2

This sheet contains the power supplies, the rear panel jack socket
trigger circuits, the standby relay control and the ‘interface’
circuits between the output signals of the power amplifiers and the
inputs expected by the micro processor.

The mains input enters the unit at SK203, with capacitors C205
and C206 acting as conducted RF suppression. The earth
connection is passed on to the chassis (for safety reasons the
chassis metalwork remains connected to mains power earth at all
times). Switch SW200 is the voltage selector switch, allowing the
unit to be operated in 230V or 115V mains countries by switching
the dual-primary mains transformers between series and parallel
winding. Varistors VR200 and VR201 act to prevent over-voltage
surges from da maging the unit . If the user selec ts 115V opera tion
and then connec ts the unit to a 230V sup ply, the varist ors will go
to a low impedance and blow the primary fuses. Any very high
voltage line transients will also be suppressed, helping to eliminate
transformer isola tion breakdown.

Relay RLY200 switches the primary side of the mains transformer,
allowing the micro to control th e on / off status of th e amplifier. Its
contacts are snubbed by capacitors C207 and C208 (to eliminate
switching spark transients and prolong relay lifespan). The primary
windings of the toroidal mains transformer connect to SK204.

PCB mounted transformer TX200 is powered all the time that
mains is presen t on S K203 , i rres p ective of t h e on / off st at u s of the
amplifier. This is to ensure that the micro processor is always
operational and can thus control the mains switching for the main
amplifier. Secondary fuse F202 limits the current in the event of a
failure mode, as the short circuit primary current of TX200 would
be insufficient to blow the mains fuses.

Diodes D200 thru D203, C227 and IC201 provide the 5VDC
supply which powers the micro and display PCB and the relay
coils. C224 is to reduce diode noise being transmitted back
through the leakage capacitance of TX200.

The mains transformer secondary winding is connected to SK200.
This is a centre tapped winding, and is used with full bridge
rectifier BR200 to produce the main positive and negative supplies
for the power amp. C209 and C210 are the large reservoir
capacitors, with C211 and C212 acting as high frequency
decouplers. The main power supply rails and ground are accessible
on SK205 for future module expansion.

The circuitry around SK201A and IC200 is to receive and
demodulate remote control commands sent in via the rear panel
jack socket. This is for mu lti-room applications.
L200 and C200 form a parallel resonant circuit at approximately
37kHz. The output from this bandpass filter is passed into IC200A
where it is ‘chopped’ and fed to IC200B to provide the output
signal.

SK201B is a 13VDC signal trigger output which is active
whenever the am plifier is powered up. R218 and DZ207 / C223
provide a reference voltage which is buffered by TR200. TR201
and R217 act as a current limit and prevent damage due to a short
circuit on the output of SK201B. The maximum current is
approximately 65mA.

TR203 and TR202 are a complementary Darlington pair which
turn on mains relay RLY200 when activated by a signal from the
microprocessor.

TR204 and its associat ed componen ts are to detec t whenever AC
mains is present at the IEC socket. This is to notify the
microprocessor i f the u ser ha s unplugged th e mains cord, s o that it
can take the necessary action (muting all the outputs and switching
off the mains rela y). The reser voir ca pacit ors should last at leas t 4
mains cycles which gives t he microproces sor plenty of time for a
controlled shutdown.

TR204 forms a monostable circuit. Each cycle of AC turns on
TR204 via R211. TR204 then ‘shunts’ C229 ensuring that it is
kept at a low potential. If more than one mains cycle is missing,
then R219 charges up C229 sufficiently to trigger Schmitt inverter
IC202E thus pa ssing on a logic signal to the mi croprocessor. Th e
use of a Schmitt inverter for IC202 is to ensure that the micro
receives ‘clean’ logic levels - the hysteresis voltage (about 0.5V) is
sufficient to prevent circuit noise from producing a string of
‘ghost’ signals wh en analogue levels are near the threshold point.

TH200 is a positive tempco thermistor placed adjacent to the
heatsink on which the output transi stors are mounted. When the
temperature of the thermistor exceeds 90 degrees Celsius the
thermistor goes to a high impedance and so the input to IC202F
goes low. This triggers a HIGH output to the micro indicating
thermal overload .

The VI protection signals from the left and right channels pass into
IC202A and IC202B respectively, to be ‘cleaned up’ via the
Schmitt trigger. They are then NOR’d using TR205 which sends a
HIGH signal t o t h e mi cr o in th e event of ei t h er c h an n el su ff eri ng a
short circuit or current overload. Exactly the same approach is
used for the DC fault lines using IC202C and IC202D.

L882 Circuit Sheet 3

This is the main audio power amplifier circuit. The amplifier is a
class B design, which uses SAP ‘audio’ transistors in a
symmetrical current feedback configuration. Input and feedback
paths are DC c oupled and there is an active integrating s ervo to
remove DC offsets from the output.

The basic principle of operation i s foll ows:
The input signal is amplified by a factor of 2 in IC300A. This
drives a 44 impedance to ground causing the supply pin currents
to change with the signal level. These chan ging supply pin currents
are then ‘reflected’ by a pair of complementary Wilson mirrors
and passed on to a series of buffer transistors before being
connected to the load . The ‘f eedba ck curr ent’ f lows back from the
output terminal via R331 and R332 and attempts to provide the
current necessary to allow IC300A to swing its output without
drawing excessive current from its supply pins, thus making the
change in supp ly current very small i ndeed. This i s why the term
‘current feedback’ is used - it is the current flowing in the
feedback resis tors that sets the overall gain of the amplifier.

IC300B acts as an in vert in g int egra tor a nd its pu rp ose i s to remove
DC from the loudspeaker output. Any positive DC offset will
cause the output of IC300B to go negative, thus increasing the
current in its n egative supply pin and pullin g the output voltage
back towards zero. R330 and C317 set the time constant of this
integrator (0.47 seconds) so that audio frequency components are
ignored and only DC and subsonic frequencies are removed.

The input to the amplifier is limited to ±5.4V via back-to-back
zener diodes D Z302 and DZ303. Th is is to prevent th e user from
grossly overdriving the input to the amplifier and possibly causing
damage. The diodes appear before series resistor R324 so that their
variable capacitance does not introduce high frequency harmonic
distortion.

R324, R327 and C316 act a s an input filter - this is a first order
low pass filter with a corner frequency of around 340kHz to
prevent RF sign als from being in jected into the fron t end of the
amplifier. The corner frequency was ch osen such that the phase
shift introduced is less than 5 at 20kHz (considered by the AES
to be the minimum perceptible relative amount by the human ear).
The input impedance of the amplifier is 23kW at DC, falling to
around 14kW at 20kHz.

Operational amp lifier IC300A is actin g as a non-invertin g gain of
2, driving the input signal into a 44W impedance to ground via
R322 and R337. Its output voltage will be an accurate
amplificati on of its input voltage (i.e. the signal on pin 1 should
look identic al t o th at on pi n 3 bu t a t twice t he am pli tude). The op ­amp is used in a slightly unusual configuration here, in that its
power supply pins are used as a (current) output, and its output pin
is used as a (current) feedback.

Transistors TR311 and TR303 supply the ±15V rails to the op­amp, and act as cascades to pass its supply pin currents through to
the current mirrors, which sit at a potentia l too high for the op-amp
to be connected directly.

TR300, TR301 and TR321 form a PNP Wilson current mirror,
which reflects the current sunk by the positive supply pin of
IC300. Likewise TR314, TR315 and TR320 form an NPN Wilson
current mirror, which reflects the current sou rced by the negative
supply pin of IC300.

R315 thru R318 provide emitter degeneration of approximately
300mV for the current mirrors (as they pass about 3mA DC in
quiescent c onditions) , to ensure ac curate oper ation ind ependent of
the small variations between t he transistors in the current mirrors.
They also ensure that the current passing down the next sta ge is
reasonably constant as the internal temperature of the amplifier
changes, swamp ing out small t hermal varia tions in the V
mirror transistors.

R319 and R320 slightly decouple the rails to the current mirrors
from the main power rails of the amp lifier, to allow the bootstra p
circuit to operat e. The bootstrap consis ts of C302 and C306 with
metal film power resistors R352 and R353. The bootstrap is
provided to allow the power supply rails of the current mirrors to
go up and down slightly with the output signal into the
loudspeaker. This enables the driver stage to fully saturate the
output transi stors and thu s give th e greatest power outp ut and b est
thermal effici ency for any given power rail voltage. The voltage on
the ‘inside’ end of R319 and R320 will vary by about 12 volts
peak to peak at full output power, rising above the main power
rails during signal peaks.
C307 and C308 with R333 and R335 provi de the compensation
necessary to ensure stability when the loop is closed. They are
Miller capacitors which dramatically reduce the transimpedance
(i.e. current to voltage gain) of the current mirrors at high
frequencies. The present value of 47pF provides for a unity gain
open loop ban dwidth of around 75MHz, whilst en suring a clos ed
loop gain margin of around 6dB (note that gain margin in a current
feedback design is not dependent on system bandwidth to a first
order approximati on). R3 33 and R335 provid e a ‘zero’ in th e open
loop frequency response which is tailored to give the best time
domain performance (i.e. to make high frequency square waves
look square with minimal ringing or overshoot).

DZ304 and C311 provide a fixed 4.7V bias voltage to allow the
following st ages to opera te correc tly. C31 1 is ther e to ensure t hat

of the

BE

both halves of the following stage receive an equal AC signal
component at high frequency.

TR310 and TR307 are the ‘pre-driver’ transistors, which act to
buffer the outputs from the preceding stage and drive the
Darlington output power transistors. TR309 and R321 act as a
current limit, to ensure that the emitter current of TR310 does not
exceed 30mA in a fault condition. TR306 and R323 provide the
same function for TR307.

R338 and R339 are to lo osely cou ple t he out puts of t he pre-d river
stage to the inpu ts of the Da rlingt on power outpu t devices. This is
so that the inbuilt temperature sensing diodes of the output
transistors can accurately control the quiescent current of the
output stage as the junction temperature of the power devices
varies. C312 and C31 8 ensure tha t both halves of t he output sta ge
receive an equal AC signal component.

The output t ransistors are TR318 and TR 319. These are Sanken
SAP15N and SAP15P devices respectively. They are specially
designed for audio power amplifier use. In addition to high current
gain (Darlington with a typical h
inbuilt emitter resistor (thick film power resistor of 0W22) and
temperature sensing diodes which closely and rapidly track the
V

versus temperature characteristic of the power transistors,

BE

allowing for easy, fast-responding and reasonably accurate control
of quiescent current (one of the major headaches of class B
amplifier des ig n!)

RV300 is for fine trimming of the quiescent current. PL300
provides a convenient measuring point for this, which is short­circuit protected in the event of a slip with the multimeter probe!
All of the remaining circuitry to the right of TR318 and TR319 is
essentially for output stage p r otection...

Transistors TR312 and TR304, alon g with th e network of resist ors
and capacitors to which they are connected, provide instantaneous
overload protection of the output stage. This is a conventional
single slope VI protection scheme, which allows much greater
current to be delivered into a rated load than into a short circuit.
The values allow for 18A peak delivery (at clip) into a purely
resistive load, 7A peak (at clip) into a purely capacitive load and
around 4A peak in to a short circui t. R345, C303, R34 6 and C304
allow these values to be doubled for short transient bursts
(approximately 2.7 milliseconds) so that impulsive musical
transients can be delivered cleanly with minimal risk of damaging
the output transistors.

TR313, TR302 and th eir associated components send a signal to
the micropro cessor when the inst antaneous protect ion circuits are
having to work ‘hard’ to prevent amplifier overload. This instructs
the micro th at the user is sever ely abusing th e amplifier and will
switch off the loudspeaker relays to prevent possible permanent
damage. In reality, if you short circuit the outputs at any
appreciable volume level, this circuit will trigger and the
microprocessor will turn off the loudspeaker relays and send a
signal to the user.

R308, R314 and C320 form a low pass filter from which the DC
detection circuits can sense excessive DC at the loudspeaker
outputs. If there i s any positive DC present, then TR316 will turn
on, which turns on TR305 and thus activates the DC p rotection
line to the micro, turning off the loudsp eaker relays.

If there is any negative DC present, then TR308 will turn on,
which turns on TR317 whi ch then tu rns on TR305 in turn, cau sing
the same effect.

R350 and C319 are the Zobel network which is provided to ensure
the amplifier ‘sees’ a constant and resistive load at very high
frequencies, to aid stability, although the amplifier will be stable
without the Zobel fitted.

of 20,000) they provide an

FE

C313 locally couples the ‘high frequency’ and loudspeaker ground
returns together at the output to overcome the effects of track
inductance back to the star point. C309 couples the ‘high
frequency’ and signal grounds togeth er at the input for th e same
reason.

D303 and D304 are ‘flyback’ diodes to protect the output
transistors from reverse bias when the amplifier is heavily clipped
into an inductive load (such as a loudspeaker voice coil!)

Sheet 4 is an identical copy of sheet 3 so I will not describe it
separately.

L870 Phono Circuit Description

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 ±15V regulated rails from 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 pu rposes of t his descri ption the left chann el 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 tran sistors (TR106,107).
These transistors are very specific and should only be replaced
with identical parts with the E grade high gain. TR100 & TR101
form a current source for the pair, which sets the qui escent current
for the entire amplifier. The active load consists of TR110 &
TR111, which forms part of a differential current mirror with
TR112,113 & 114. This differential stage also has an active load
(TR102 & TR103) to keep gain to a maximum .

Both of these d i ff eren ti a l st a ges a re des i gned t o h a ve a s mu ch 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.

SW100 switches between MM & MC. Two poles of the switch
change between the different loading required for each type of
cartridge: R108 & C109 for MM, and added in parallel for MC
R104 & C108. The oth er two poles change the feed back resistor
value to alter the gain. MM: R105 and in parallel for MC R123.

The DC offset is c ontrolled by a non-i nverting servo b uilt around
IC100. The amount of servo current is different for each gain
setting via R111 (MM ) & R124(MC) so that the low 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 an d an approximation of the RIAA/ IEC curve (-2dB @
20Hz).

The output is class A buffered by a dual mirror follower
(TR104,105,108,109). The quiescent current is set up by D100
and R118,119.

Closed loop stability is achieved with C116,117, giving
symmetrical slewing capability.

SK103 connects to the micro controller and display PCB.
The 14 pin connector is numbered as follows:

No Name Type Description
1 +5V_D O/P 5 volt digital supply (for micro)
2 0V_D O/P Digital ground
3 +49V O/P Main power supply for VFD (via fusible resistor)
4 STANDBY I/P Mains relay control signal (HIGH = ON)
5 SPKR1 ON I/P Speaker 1 relay control signal (HIGH = ON)
6 SPKR2 ON I/P Speaker 2 relay control signal (HIGH = ON)
7 THERMPROT O/P Over temperature protect (HIGH = FAULT)
8 VIPROT O/P Short circuit protect (HIGH = FAULT)
9 DCPROT O/P DC offset protect (HIGH = FAULT)
10 AC PRESENT O/P Indicates AC mains is plugged in (HIGH = ON)
11 TRIGGER O/P 12V DC trigger input (HIGH = ON)
12 REMOTE O/P Demodulated RC5 remote input from rear panel
13 0V_D O/P Spare digital ground pin
14 +5V_D O/P Spare 5 volt digital supply pin

The ground naming convention is as follows:

Name Description
0V_D Digital ground (used for micro processor circuitry, display and interface)
0V_LS_R Right channel loudspeaker ground return
0V_SIG Signal ground (this is the ‘clean’ precision reference ground)
0V_PSU Power supply ground (high current pulses for the large reservoir caps)
0V_TRIG Ground return for the jack socket trigger and remote control circuit
0V_HF_R Decoupling ‘noisy’ ground for the right channel power amp
0V_LS_L Left channel loudspeaker ground return
0V_HF_L Decoupling ‘noisy’ ground for the left channel power amp

A85, P85, P85/3 Service Guide

Build History

ECO
Number

00_1089 02/10/00 A85 – Fascia position changed to prevent display buttons sticking
00_1129 01/11/00 A85, P85, P85/3 – Improved stability under heavy clipping of amplifier R345,

00_1138 27/11/00 A85, P85, P85/3 – C303, C304, C403 changed from 10uF to 100uf capacitors –

01_1030 23/02/01 A85, P85, P85/3 – RV300, RV400 changed to 220R presets to make it easier to

01_1068 11/04/01 A85, P85, P85/3 – New output device clamp fitted to heatsink
01_1101 04/06/01 A85, P85, P85/3 – Sensitivity of DC offset detection circuit reduced – Power

01_1142 22/08/01 A85 – Preamp board upgraded from L866 to L937
01_1178 12/10/01 A85, P85, P85/3 – Speaker terminals changed from Camcon to 4mm binding

01_E014 28/11/01 A85 – Preamp board fuses F300, F301 up rated to 2A surface mount
02_E033 31/01/02 A85 – Extra pad F038 fitted under TX to stop TX coming loose in transit
02_E035 04/02/02 A85, P85, P85/3 – Main 20mm fuse rating changed to 4AT

Software History

ECO
Number

01_1072 18/04/01 1.1 Remote standby action changed from turning unit completely off

01_1095 21/05/01 1.2 Delay added to start H8 start up routine (volume control chip)
01_1167 12/09/01 1.3 Volume chip read/write protocol changed
01_1179 26/10/01 2.0 Added the processor mode option
01_E011 23/11/01 2.1 Corrected the welcome message saving fault. This fault was

02_E048 15/02/02 2.2 Corrected the processor loop volume jump when v/c adjusted

Current Fuse Ratings (20/02/02)

Fuse Position Fuse Rating

Main Supply fuses - A85, P85, P85/3 2 x 4AT 20mm (Arcam part number C12406)
PSU fuse F202 - A85, P85, P85/3 750mA surface mount (Arcam part number C3751)
Preamp fuses F300, F301 – A85 2A surface mount (Arcam part number C3202)

Quiescent Current Setting

Left channel Measure points indicated on PCB -

Right channel Measure points indicated on PCB -

Date Description of Change

R346, R445, R446 changed from 100R to 0R link
C307, C308, C407, C408 changed from 47P to 100P capacitors

this prevents protection circuit from operating when driving a 4 ohm load at
low frequenc y

adjust the bias settings

amp cct R308, R408 changed to 22K - R314, R414 changed to 10K
PSU surface mount fuse F202 up rated from 500mA to 750mA

post

Date Version Description of Change

to putting unit into standby

introduced with version 2.0 software

Adjust RV300 for 8.5mV cold or 12 mV when warm

Adjust RV400 for 8.5mV cold or 12 mV when warm

Fault Diagnostics

Fault Action

No power Check fuses

Check power supply rails

Unit functions ok but no audio Check preamp fuses

Check RL100A (volume control mute relay)
Check +5V supply rail

Check mute signal line
Volume cont rol locks up Check softwar e version is 2 .0 or higher
DC offset Check equipment connected to amp for DC on the audio leads

Check alterations as per ECO 01_1101 have been fitted
Unit fails to respond to commands Check ribbon cable from display to main board

Check ribbon cable from display to preamp board
Unit gets very hot Check power stage IQ settings

Hints & Tips

!

To check software version press PHONO, TUNER, DVD buttons on the front panel
simultaneously.

!

On issue 2 phono boards only, fit Kapton insulation tape to the phono stage PCB (rear panel
end) to prevent track shorting to chassis.

!

Check all fuses are the correct rating.

!

Check DC offset alterations are fitted as per ECO 01_1101

!

To isolate a fault between the pre or power amp section press the PRE/PWR button on the
rear panel to separate the two sections.

!

Check R100 on amp/psu board is not shorting to the track underneath (through plated via).

87654321

D

L882C3

L882C3_3.2.SCH
L SIG
0V SIG
0V_LS_L
0V_HF_L
+49V

-49V +5V_D

R SIG
0V_SIG
0V LS R
0V_HF_R
+49V

-49V

INPUT
0V_SIG

0V_HF
VPOS
VNEG

L882C4

L882C4 3.2.SCH

INPUT
0V_SIG

0V_HF
VPOS
VNEG

VIPROT

DCPROT

OUTPUT0V_LS

VIPROT

DCPROT

OUTPUT0V_LS

VIPROT L
DCPROT L
LS L

VIPROT_R
DCPROT_R
LS R

0V D
0V_PSU

STANDBY
VIPROT_L
VIPROT_R
0V TRIG
DCPROT L
DCPROT_R

L882C2
L882C2 3.2.SCH

0V_D +5V(D)
0V_PSU
PWRON

THPROT_uCVIPROT_L

VIPROT_R VIPROT_uC
DCPROT_L

DCPROT_R

DCPROT_uC

AC_PRES0V_TRIG

TRG IN

VPOS
VNEG

RC5 IN

+49V

-49V
THERMPROT
VIPROT
AC PRESENT
DCPROT
REMOTE
TRIGGER

0V TRIG

0V_D

34

5 6

1 2

SP100

STAR_8

TP121

78

0V SIG
0V HF R

D

0V_LS_R
0V LS L0V HF L
0V_PSU

C

FROM PREAMP

SK102

1
2
3
4

AMPCT4

0V_SIG

1

PHONO4G

F

EMC

N

SK104A

0V_SIG

SW100A
2PCO

1

2

PL100

2

C100
1N0 SM

0V_SIG

PL101

2

3

1

TP100

1

SK104B

F

N

PHONO4G

TP101

TP102

L SIG
R SIG

LS L

0V_LS_L

LS R

SK105

HPSKT

LHC

RHC

R

+49V

RLY100C

D100

SK106
1
2
3
4

AMPCT4

4

TP118

L

5
2

3
1

6
7

TP119

TP120

R105
100R 1W CF

R103
330R 1W CF

R104
330R 1W CF

R106
100R 1W CF

SK107
1
2
3
4

AMPCT4

1N4003F

TR100
BD179

RLY G5Z-2A-E

TR101
BD179

R107
220R SM

RLY101C
RLY G5Z-2A-E

R101
100R SM

R102
100R SM

R108
220R SM

D101
1N4003F

C

SPKR1 ON

SPKR2 ON

B

SK103

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

SW100B
2PCO

R100
10R MF

4

5

6

INTEGRATED / PRE-POWER
MODE SELECT SWITCH

+5V D

+49V

STANDBY
SPKR1 ON
SPKR2 ON
THERMPROT
VIPROT
DCPROT
AC PRESENT
TRIGGER
REMOTE
0V_D

TP103

TP104

TP105

TP106

TP107

TP108

TP109

TP110

TP117

LS L

TP111 TP113 TP115

0V_LS_L

LS R

TP112 TP114 TP116

0V_LS_R

RLY100A

RLY G5Z-2A-E

RLY100B

RLY G5Z-2A-E

SK100A

Top+

Top-

CAMCON_G

SK101A

Top+

Top-

CAMCON_G

RLY101A

RLY G5Z-2A-E

RLY101B

RLY G5Z-2A-E

SK100B

Bot+

Bot-

CAMCON_G

SK101B

Bot+

Bot-

CAMCON_G

PCB

PCB

L882PB_3
EL

EARTH LEAD

8M101

EARTH LEAD

0V D

B

A

FFC 14W 2.54MM VER
8K7014

DRAWING TITLE

A85 amplifier and PSU - top sheet

23425

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

Notes:

Filename

L882C1_3.2.PRJ

Circuit Diagram

01_1101 JR 6/4/01 POWER SUPPLY FUSES AND DC OFFSET 3.2
00_1134 MGM 17/11/00 NO CHANGE TO THIS SHEET
00_1138 JR 27/11/00 NO CHANGE TO THIS SHEET
00_1129 JR 1/11/00 NO CHANGE TO THIS SHEET
00_1115 JR 16/10/00 NO CHANGE TO THIS SHEET
00_1086 JR 19/9/00 NO CHANGE TO THIS SHEET

ECO No. DESCRIPTION OF CHANGE

Date Printed

INITIALS

6-Jun-2001

DATE

Drawn by:

J Reckless

1 4Sheet of

DRAWING NO.

L882C1

2.4

A

2.3

2.2

2.1

2.0

ISSUE

1 2 3 4 5 6 7 8

NEUTRAL

87654321

SK204

4
3

D

EMC Shield

BC200
TOOLING4.1

SH200
EMCMAINS

Green

SK202
CAGECLAMP1

1

C205
3N3 MAINS

TP206

N E L

N

E

TP200

TP207

EARTH

C234

SK203

IEC3 NO RIVETS

L

C206

3N3 MAINS

LIVENEUTRAL

LIVE

NEUTRAL

LIVE

SW200B
VOL SEL SLIDE

F200

AS2A

SW200A
VOL SEL SLIDE

F201

AS2A

2
1 5

MOLEXPWR8

RLY200A

DPDT5V

C207

3N3 MAINS

RLY200B

DPDT5V

C208

3N3 MAINS

8
7
6

TP202

TP201

TP210

TP203

1 0V

NF
VR200

VDR 115V

2
3

NF

VR201

VDR 115V

4

TX200

9V

115V

0V

9V

0V

115V
TX 3VA 9301

HS200
TO220HS08REG

9VRMS

IC201

F202

5

T750mA SM

C224
6
7

8

100N CD

D200
1N4003F

D201
1N4003F

TP204

D202
1N4003F

+

C227
3300u 25V

D203
1N4003F

7805

I

Vin

C225
100N CD

GND

G

Vout

O

HS

TP205

C226
100N CD

0V_D

+5V_D

+5V(D)

+

C228
1000u 10V

0V_D

D

220N X2 CLASS

R231
1M5 VR25

C

+49V

TP208

VPOS

SK205
1
2
3
4
5
6

AMPCT6

VNEG

SK200

3
2
1

MOLEXPWR6

1

BR200
BRGBU8D

+

6
5
4

3

~

-

4

2

~

+

C209
10,000u 63V

+

C210
10,000u 63V

C211
100N PC

0V_PSU

C212
100N PC

0V_PSU

TP209

MAINS WIRING AND AUXILIARY SUPPLY

9VRMS

R211
10K SM

TR204
BC849B

D206
BAS16W SM

0V_D

+5V_D

R219
1K8 SM

+

C229
22U EL

+5V_D

IC202E

74HC14D

MICROPROCESSOR SIGNALS INTERFACE

1011

R220

AC_PRES

10R SM

C

POWER AMP SUPPLY

-49V

CARRIER FILTER AND DEMODULATOR

R223
10K SM

1

R229
100K SM

C231

1N0 SM

5
6

R209
10K SM

R224
1K8 SM

R230
1K5 SM

R225
1K8 SM

IC200A

2
3

LM393A SM

C230
10N SM

R222
10K SM

TRG IN

SK201A

B

TP211

Near to PCB

JACK3.5X2

MODULATED RC5
REMOTE CONTROL INPUT

R226
470R SM

R227
1K0 SM

R228
100K SM

DZ204
4V7 350MW SM

RC5 IN

R208
10K SM

L200
27mH

IC200B

7

LM393A SM

C200
680P PP

+5V_D

84

IC200C
LM393A SM

C232
100N SM

+

C233
10U EL

VIPROT_L

R201
1K0 SM

R202

VIPROT_R

1K0 SM

14

IC202G
74HC14D

7

C214
10N SM

0V_D

C201
100N SM

IC202A

1 2

74HC14D
IC202B

3 4

C215
10N SM

74HC14D

C202
100N SM

0V_D

TH200
PTH90DEG

R205
1K0 SM

R213
4K7 SM

R214
4K7 SM

IC202F

74HC14D

C219
10N SM

+5V_D

R206
1K0 SM

0V_D

R221

1213

10R SM

TR205
BC856B

THPROT_uC

B

C203
100N SM

VIPROT_uC

C218
10N SM

+5V_D

0V_TRIG

+49V

R218

+5V_D

TR200
RLY200C
DPDT5V

R200

A

STANDBY RELAY CONTROL

R212

PWRON

4K7 SM

1K0 SM

TR203
FMMT497

D205
BAS16W SM C213

10N SM

TR202
FMMT597

0V_D

TRIGGER OUTPUT
APPROX 13.5VDC
60mA MAX CURRENT

SK201B

Far from PCB

JACK3.5X2

0V_TRIG

C235

1N0 SM

BD179

TP212

R210
10K SM

CAMCON_G
SK101C

R217
10R SM

+

C222
10U EL

CHASS

TR201
FMMT497

10K SM

DZ207
15V 350MW SM

+

C223
10U EL

0V_TRIG

DRAWING TITLE

A85 amplifier - power supply and microcontroller interface

23425

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

DCPROT_L

DCPROT_R

Notes:

Filename

L882C2 3.2.SCH

R203
1K0 SM

R204
1K0 SM

C216
10N SM

C217
10N SM

0V_D

Circuit Diagram

IC202C

5 6

74HC14D
IC202D

74HC14D

R207
1K0 SM

0V_D

TR206
BC856B

DATE

C204
100N SM

DCPROT_uC

C220
100N SM

NO CHANGE TO THIS SHEET 2.1

Drawn by:

J Reckless

2 4Sheet of

DRAWING NO.

L882C2

A

2 4

2.2

ISSUE

R215
4K7 SM

89

R216
4K7 SM

01_1101 JR 6/4/01 POWER SUPPLY FUSES AND DC OFFSET 3.2
00_1134 MGM 17/11/00 NO CHANGE TO THIS SHEET
00_1138 JR 27/11/00 NO CHANGE TO THIS SHEET 2.3
00_1129 JR 1/11/00 NO CHANGE TO THIS SHEET
00_1115 JR 16/10/00
00_1086 JR 19-9-00 R231, C234, C235 ADDED FOR EMC 2.0

ECO No. DESCRIPTION OF CHANGE

Date Printed

C221
10N SM

INITIALS

6-Jun-2001

1 2 3 4 5 6 7 8

87654321

D

R319
100R SM

R300
10K SM

R315
100R SM

R316
100R SM

PRE DRIVER

VPOS

D

PNP CURRENT MIRROR

TR310
TR300
FMMT597

+

C300
100U EL

0V_HF

C

INPUT

DZ302
4V7 350MW SM

DZ303
4V7 350MW SM

0V SIG

0V_SIG

+

0V_HF

C301
100U EL

DZ300
15V 350MW SM

C310
100N SM

0V_SIG

INPUT FILTER V TO I AMP

R324
1K0 SM

C309
100N SM

0V_HF

DZ301
15V 350MW SM

R327
22K SM

0V_SIG

3
2

C316
470P PPW

C314
100N SM

TR311
FMMT497

R328
4K7 SM

TP302

84

IC300A

TL072CD

TP303

TR303
FMMT597

7

0V_SIG

1

C317

470N PE

IC300B

TL072CD

TP304

R322
22R SM

R337
22R SM

0V_SIG

R333
3K3 SM

100P SM

DC SERVO

R330

6

1M0 SM

5

0V_SIG

R331
1K5 SM

R332
1K8 SM

C311
100N PC

R335
3K3 SM

100P SM

C307

TR322
FMMT497

C308

TR301
FMMT597

TR321
FMMT597

R355
6K8 SM

R354
1K0 SM

TR320
FMMT497

TR309
FMMT497

R338
150R SM

BOOTSTRAP

+

C302
100U EL 100V

R352
470R 2W MF 5%

470R 2W MF 5%
R353

+

C318
10U EL

+

C306
100U EL 100V

BOOTSTRAP

R339
150R SM

TR306
FMMT597

FMMT497

R321
22R SM

C312

10N SM

R323
22R SM

ADJ BIAS

RV300
100R PSET

D300
BAS16W SM

OUTPUT STAGE

TR318
SAP15N

TP305

R325
1K0 SM

R340
100K SM

R326
1K0 SM

TP306

TR319
SAP15P

OUTPUT STAGE

PL300

1
2

MEASURE
BIAS
(SET TO 16mV)

R341
330R SM

R342
330R SM

R343
100R SM

R344
100R SM

V-I PROTECTION

R334
22K SM

R347
100R SM

R345
0R0 SM

+

C303
100U EL

+

C304
100U EL

R346
0R0 SM

R348
100R SM

R336
22K SM

V-I PROTECTION

D301
BAS16W SM

TR312
FMMT497

TR304
FMMT597

D302
BAS16W SM

D303
1N4003F

DC OFFSET SIGNAL
TO MICRO

D304
1N4003F

0V_HF

R349
100R SM

DCPROT

TR305
FMMT597

TP308

DZ306
4V7 350MW SM

R302
10K SM

R310
4K7 SM

C315
100N SM

R301
10K SM

R329
4K7 SM

TR313
FMMT497

R303
10K SM

R304
10K SM

0V_HF

TR316
FMMT497

TR302
FMMT597

R305
10K SM

R306
10K SM

+

DC OFFSET
DETECTION

R307
10K SM

R313
10K SM

VI PROTECT
SIGNAL TO MICRO

TP307

C305
10U EL

R308
22K SM

VIPROT

DZ305
4V7 350MW SM

0V_HF 0V_LS

C320
100U NP

2U2H LAC SMALL

R350
5R6 2W CF

C319
100N PE

R314
10K SM

R351
10R MF

L300

ZOBEL NETWORK

C313

100N SM

C

OUTPUT

0V LS

0V HF

TR314

R309
10K SM

FMMT497

NPN CURRENT MIRROR

R317

B

100R SM

R320
100R SM

TR315
FMMT497

R318
100R SM

TR307

FMMT597

PRE DRIVER

TR308
FMMT597

R311
10K SM

R312
10K SM

B

TR317
FMMT497

VNEG

A

01_1101 JR 6/4/01 POWER SUPPLY FUSES AND DC OFFSET 3.2

DRAWING TITLE

A85 amplifier - power output stage left

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:

Filename

L882C3 3.2.SCH

00_1134 MGM 17/11/00 NO CHANGE TO THIS SHEET
00_1138 JR 27/11/00 C303 C304 FROM 10U TO 100U 2 3
00_1129 JR 1/11/00 R345 R346 C307 C308 VALUE CHANGES
00_1115 JR 16/10/00 R338 R339 CHANGED TO 150R
00_1086 JR 19/9/00 NO CHANGE TO THIS SHEET 2 0

ECO No. DESCRIPTION OF CHANGE

Date Printed

INITIALS

6-Jun-2001

DATE

Drawn by:

J Reckless

3 4Sheet of

DRAWING NO.

L882C3

2 4

2 2

2.1

ISSUE

A

87654321

D

R419
100R SM

R400
10K SM

R415
100R SM

R416
100R SM

PRE DRIVER

VPOS

D

PNP CURRENT MIRROR

TR410
TR400
FMMT597

+

C400
100U EL

0V_HF

C

INPUT

DZ402
4V7 350MW SM

DZ403
4V7 350MW SM

0V SIG

0V_SIG

+

0V_HF

C401
100U EL

DZ400
15V 350MW SM

C410
100N SM

0V_SIG

INPUT FILTER V TO I AMP

R424
1K0 SM

C409
100N SM

0V_HF

DZ401
15V 350MW SM

R427
22K SM

0V_SIG

3
2

C416
470P PPW C411

C414
100N SM

TR411
FMMT497

R428
4K7 SM

TP402

84

IC400A

TL072CD

TP403

TR403
FMMT597

7

0V_SIG

1

C417

470N PE

IC400B

TL072CD

TP404

R422
22R SM

R437
22R SM

0V_SIG

R433
3K3 SM

100P SM

DC SERVO

R430

6

1M0 SM

5

0V_SIG

R431
1K5 SM

R432
1K8 SM

TR422
FMMT497

100N PC

R435
3K3 SM

100P SM

C407

C408

TR401
FMMT597

TR421
FMMT597

R455
6K8 SM

R454
1K0 SM

TR420
FMMT497

TR409
FMMT497

R438
150R SM

BOOTSTRAP

+

C402
100U EL 100V

R452
470R 2W MF 5%

470R 2W MF 5%

R453

+

C418
10U EL

+

C406
100U EL 100V

BOOTSTRAP

R439
150R SM

TR406
FMMT597

FMMT497

R421
22R SM

C412

10N SM

R423
22R SM

ADJ BIAS

RV400
100R PSET

D400
BAS16W SM

OUTPUT STAGE

TR418
SAP15N

TP405

R425
1K0 SM

R440
100K SM

R426
1K0 SM

TP406

TR419
SAP15P

OUTPUT STAGE

PL400

1
2

MEASURE
BIAS
(SET TO 16 mV)

R441
330R SM

R442
330R SM

R443
100R SM

R444
100R SM

V-I PROTECTION

R434
22K SM

R447
100R SM

R445
0R0 SM

+

C403
100U EL

+

C404
100U EL

R446
0R0 SM

R448
100R SM

R436
22K SM

V-I PROTECTION

D401
BAS16W SM

TR412
FMMT497

TR404
FMMT597

D402
BAS16W SM

D403
1N4003F

DC OFFSET SIGNAL
TO MICRO

D404
1N4003F

0V_HF

R449
100R SM

DCPROT

TR405
FMMT597

TP408

DZ406
4V7 350MW SM

R402
10K SM

R410
4K7 SM

C415
100N SM

R401
10K SM

R429
4K7 SM

TR413
FMMT497

R403
10K SM

R404
10K SM

0V_HF

TR416
FMMT497

TR402
FMMT597

R405
10K SM

R406
10K SM

+

DC OFFSET
DETECTION

R407
10K SM

R413
10K SM

VI PROTECT
SIGNAL TO MICRO

TP407

C405
10U EL

R408
22K SM

VIPROT

DZ405
4V7 350MW SM

0V_HF 0V_LS

C420
100U NP

R450
5R6 2W CF

C419
100N PE

R414
10K SM

R451
10R MF

L400

2U2H LAC SMALL

ZOBEL NETWORK

C413

100N SM

C

OUTPUT

0V LS

0V HF

TR414

R409
10K SM

FMMT497

NPN CURRENT MIRROR

R417

B

100R SM

R420
100R SM

TR415
FMMT497

R418
100R SM

TR407

FMMT597

PRE DRIVER

TR408
FMMT597

R411
10K SM

R412
10K SM

B

TR417
FMMT497

VNEG

A

01_1101 JR 6/4/01 POWER SUPPLY FUSES AND DC OFFSET 3.2

DRAWING TITLE

A85 amplifier - power output stage right

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:

Filename

L882C4 3.2.SCH

00_1134 MGM 17/11/00 L300 L400 CHANGED TO 7D002C
00_1138 JR 27/11/00 C403 C404 FROM 10U TO 100U 2 3
00_1129 JR 1/11/00 R435 R436 C407 C408 VALUE CHANGES
00_1115 JR 16/10/00 R438 R439 CHANGED TO 150R
00_1086 JR 19/9/00 NO CHANGE TO THIS SHEET 2 0

ECO No. DESCRIPTION OF CHANGE

Date Printed

INITIALS

6-Jun-2001

DATE

Drawn by:

J Reckless

4 4Sheet of

DRAWING NO.

L882C4

2 4

2 2

2.1

ISSUE

A

DISP1
DISP SSV-07MS09

87654321

R1

R3

R2

10K SM

D

C

B

C1

100N SM

Test pad change for issue 3:
Q_23= SO (was STBLED)
Q_9=SI (was GND)

DATA /O

SK1

A

FFC8H SM

R14
4K7 SM

+5V

SW3
PAUSE

R15
1K0 SM

R11
10K SM

Q3
BC847B

Q_26

Q5
BC856B

Q6
BC846B

R12
10K SM

D5

BZX284-C5V6

R7
33K SM

F1

SW4
PLAY

Q4
BC847B

VKK

CATHODE BIAS CCT

IRIRQ

+

SW5
STOP

C5
10U EL SM

SW6
OPEN

Q_18

R5
470R SM

LED2
LED GREEN3 1MM

HDCD

+

C6

10U EL SM

(was POWER)
SW7

FWD>>

SO
SI

SCK
CS

F2

Q_29

Q_1

Q_2

Q_3

Q_4

BAS16W SM

D1

BAS16W SM

D2

BAS16W SM

D3

BAS16W SM

D4

R16
1K0 SM

R6
1K0 SM

HDCDLED

STBLED

C4

1N0 SM

1
2
3
4
5
6
7
8

9
10
11

+5V

+5V

VKK_D

VKK_CK

VSS

Q1
BC856B

+5V

38L439L340L241L142

VDD

Q2
BC847B

Q_24

Q_25

43

44

OSC

SW1
SW2
SW3
SW4
SO
SI
VSS
SCK
CS
K1
K2

K312K413VDD14S115S216S317S418S519S620S721S8

C2
100N SM

DRAWING TITLE

DVD DISPLAY PCB

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

F11F12G15G26G37G48G59G610G7

11

C3
100N SM

G1
G2
G3

37

G434G335G236G1

G5

G6
S16/G7
S15/G8
S14/G9

S13/G10

VEE

S12/G11

S11
S10

S9

22

LED1

R

On=Green
Standby=red

G

LED RED/GRN 3MM

Notes

Filename

J:\ECO wip\L886 DV88 Display board correct R4 cock-up\L8863\L8863.0a.ddb - L886 3.0a.sch

G4

Z1

33

G5

32

G6

31

G7

30
29
28
27

VKK

26
25
24
23

BU2872AK

SEG8
SEG7
SEG6
SEG5
SEG4
SEG3
SEG2
SEG1

R4
220R SM

FIX1
FIX NG HOLE

Circuit Diagram

SEG15
SEG14
SEG13

SEG12
SEG11
SEG10
SEG9

74HC74 SM

7

FIX2
FIXING HOLE

GND

14

+5V

VCC

Z2C

C8
100N SM

FIX3
FIX NG HOLE

FIX4
FIXING HOLE

ECO No. DESCRIPTION OF CHANGE

Date Printed

S125S226S327S428S529S630S731S832S933S1034S1135S1236S1337S1438S1539F242F2

F2F1

43

PCB

L886PB_3

SP1

IR RX SUPPORT PAD

PS

PHOTO_STRIP

EL1

UPDATE_BOX

DD2

10

12

D

11

CLK

Display clips: PCB footprint is called E882PM
This footprint will accept either E874PM (current clip)
or E882PM (new clip not designed yet)
This part type currently calls for p/n E874PM, change to E882PM when new clip is available

INITIALS

Z2B

9

Q

SD

8

Q

CD

74HC74 SM

13

LC1

VFD CLIP

E882PM
E874PM

DVD DISPLAY CLIP

PG 17/11/00 Correct error R4 is 1206 not 0805 3.0a
PG00_1082 14/09/00 Change RX1 to l/p part, test pad changes, display clip, R4 VALUE 3.0
CL 23/08/00 MINOR MODIFICATIONS 2.0
CL 31/07/00 PRODUCTION RELEASE 1.0

DATE

LC2

VFD CL P

E882PM
E874PM

DVD DISPLAY CL P

Drawn by:

PG17-Nov-2000

DD6

CLOGO

Layout by

Cliff

1 1Sheet of

DRILL_DWG

DRAWING NO.

10K SM

10K SM

SBX1610-52/PIC-26043TM2

Q_7

1

_6

2

_5

3

Q_30

4

_8

5
6
7
8

1 2 3 4 5 6 7 8

Q_27

K3

Q_28

K2

+5V

R13
1M0 SM

3

RX1

O/P

+5V

O/P

GND1Case

Case

GND +5V

DUAL FOOTPRINT

+5V

R8
4K7 SM

Q_23

SO
IR RQ
CS
SCK
SI

Q_9

2
3

C7
100N SM

2

Pwr in

+5V

SW1
SKIP>

SW8
<<RWD

(was MENU)

+5V

4

D

SD

CLK

CD

1

R9
10K SM

SK2

Q_10

1

Q_11

2

Q_12

3

Q_13

4
5

Q_14

6

AMPCT6H

K4

SW2
<SKIP

VKK switching CCT

Z2A

5

Q

6

Q

74HC74 SM

VKKIN VKK

R10
10K SM

VKKIN

VKK = -19.5V
F1= -13.9V
F2 = -9 6V

PCB

R RX

SUPPORT PAD

DD1

PCB MATERIAL

FR4, 1 OZ Cu

FR4_1OZ

Photo Strip

Update Box

Drilling

Detail

DD3

A2 Horizontal

Paper Marker

DD_A3H

DD4

A2 Vertical

Paper Marker

DD_A3V

FD_1

F DUCIAL

D

C

B

FD_2

FIDUCIAL

A

ISSUE

L886_3

4321

D

C

D

C

Main signal path
L937C2 1.1.SCH

B

Power supply
L937C3 1.1.SCH

B

USE EXCLUDE NF WHEN USING RUNOUT SHEET PROGRAM

DRAWING TITLE

Integrated amplifier preamp

PCB1

A

PCB

L937PB_1

23425

A & R Cambridge Ltd.
Pembroke Avenue

Notes:

Denny Industrial Centre
Waterbeach
Cambridge CB5 9PB

1 2 3 4

Filename

J:\Change_Control\ECO_AGENDA\01_E014 Fuse changes on A32 preamp\L937_1.1.ddb - Documents\Schematic\L937C1_1.0.PRJ

Circuit Diagram

01_E014 JBR 28/11/01 Fuses uprated to 2A 1.1
01_1142 JBR 14/8/01 First production release 1.0

ECO No. DESCRIPTION OF CHANGE

Date Printed

INITIALS

28-Nov-2001

DATE

Drawn by:

JBR

1 3Sheet of

DRAWING NO.

L937C1

ISSUE

A

87654321

D100

+15V -15V

BAV99W DUAL SM

SK2A

CDL1 CDL

0V_SIG

D101
BAV99W DUAL SM

D102
BAV99W DUAL SM

0V_SIG

TUNR1

D106
BAV99W DUAL SM

D107
BAV99W DUAL SM

0V_SIG

D108
BAV99W DUAL SM

D112
BAV99W DUAL SM

0V_SIG

D113
BAV99W DUAL SM

D114
BAV99W DUAL SM

0V_SIG

D115
BAV99W DUAL SM

D116
BAV99W DUAL SM

0V_SIG

D117
BAV99W DUAL SM

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

0V_SIG

0V_SIG

0V_SIG

0V_SIG

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

DVDR

R160
100K SM

TAPEIL

R161
100K SM

TAPEIR

R192
100K SM

VCRIL

R193
100K SM

VCRIR

R194
100K SM

CD L

470P FKP2

CD R

0V_SIG

TUNER L

TUNER R

0V_SIG

AV L

AV R

0V_SIG

DVD L

DVD R

TAPE IN L

TAPE IN R

VCR IN L

VCR IN R

C101

C102
470P FKP2

C103
470P FKP2

C122
470P FKP2

C123
470P FKP2

C124
470P FKP2

C140
470P FKP2

C141
470P FKP2

C142
470P FKP2

C161
470P FKP2

C162
470P FKP2

C163
470P FKP2

CD INPUT

1

F

EMC

N

C100
1N0 SM

0V_SIG

D

TUNER INPUT

CDR1

PHONO4G

+15V -15V

+15V -15V

SK2B

TUNL1

F

N

PHONO4G

+15V -15V

+15V -15V

C

AV INPUT

SK3A

AVL1

1

F

EMC

N

C121
1N0 SM

0V_SIG

DVD INPUT

B

TAPE INPUT

AVR1

PHONO4G

+15V -15V

+15V -15V

SK3B

DVDL1

F

N

DVDR1

PHONO4G

+15V -15V

+15V -15V

SK4A

TAPEIL1

1

F

EMC

N

C139
1N0 SM

0V_SIG

VCR INPUT

A

C160
1N0 SM

0V_SIG

TAPEIR1

PHONO4G

+15V -15V

+15V -15V

SK5A

VCRIL1

1

F

EMC

N

VCRIR1

PHONO4G

+15V -15V

1 2 3 4 5 6 7 8

+15V

-15V

+15V

-15V

+15V

-15V

0V_SIG

C106
100N SM

C107
100N SM

C125
100N SM

C126
100N SM

C127
100N SM

C128
100N SM

0V_SIG

0V_SIG

+15V

C104
100N SM

C105
100N SM

-15V

0V_SIG

0V_SIG

0V_SIG

+15V

-15V

+15V

C145
100N SM

C146
100N SM

-15V

AUX INPUT

C164
1N0 SM

VCR2

C143
100N SM

C144
100N SM

PHONO2G

AUX L
CD L
TUNER L
AV L
DVD L

VCR IN L
MODULE L

0V_SIG

AUX R
CD R
TUNER R
AV R
DVD R

VCR IN R
MODULE R

TAPE 2

AUX L
CD L
TUNER L
AV L
DVD L
TAPE IN L

MODULE L

VCR01

AUX R
CD R
TUNER R
AV R
DVD R
TAPE IN R

MODULE R

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
BAV99W DUAL SM

AUXIL1

1

TAPE 1

TAPE 2

TAPE 0

TAPE 1

LIST1

TAPE 0

0V_SIG

0V_SIG

VCR 2

0V_SIG

VCR 2

0V_SIG

LIST0

VCR 1

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

TAP0

TAP1

TAP2

TAPE0

TAPE1

TAPE2

VCR11

VCR21

VCR0

VCR1

+15V -15V

SK6

F

EMC

N

0V_SIG

AUXIR1

+15V -15V

D119
BAV99W DUAL SM

VCR 0

VCR 0

R195
1K0 SM

R196
1K0 SM

+5V

+5V

+5V

+5V

-15V

-15V

LISTEN 0
LISTEN 1
LISTEN 2

0V_SIG

LISTEN 0
LISTEN 1
LISTEN 2

0V_SIG

Z100
4
5
6
7

12
11
10

9
2

1

16
15

14

3

DG408DY

Z101
4
5
6
7

12
11
10

9
2

1

16
15

14

3

DG408DY

Z102
4
5
6
7

12
11
10

9
2

1

16
15

14

3

DG408DY

Z103
4
5
6
7

12
11
10

9
2

1

16
15

14

3

DG408DY
R170

22K SM
R171

22K SM
R172

22K SM
R173

22K SM

R174
22K SM

R175
22K SM

R176
22K SM

R177
22K SM

AUXL

0V_SIG

0V_SIG

X0
X1
X2
X3
X4
X5
X6
X7

EN
A0
A1
A2

GND
V-

X0
X1
X2
X3
X4
X5
X6
X7

EN
A0
A1
A2

GND
V-

X0
X1
X2
X3
X4
X5
X6
X7

EN
A0
A1
A2

GND
V-

X0
X1
X2
X3
X4
X5
X6
X7

EN
A0
A1
A2

GND
V-

+5V

+5V

R197
100K SM

AUXR

R198
100K SM

-15V

-15V

AUX R

AUX L

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

R106
1M0 SM

0V_SIG

+15V-15V
13
8

R107
1M0 SM

0V_SIG

+15V
13
8

R131
1M0 SM

0V_SIG

+15V-15V
13
8

R132
1M0 SM

0V_SIG

Z104

X0

V+
X1
X2
X3
X4
X5
X6
X7

EN
A0
A1
A2

GND
V-

DG408DY
Z105

X0

V+
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

0V_SIG

470P FKP2

C166
470P FKP2

D

D

AUX R

AUX L

13
8

13
8

+15V

+15V

+15V1

0V_HF

0V_SIG

0V_SIG

-15V1

-15V

3
2

5
6

3
2

5
6

C147
100N PE

C167
100N PE

+15V

AUXR1

AUXL1

+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

Z113C

TL072 SM

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

-15V

84

-15V

7

OPA2134PA SM
+15V

1

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

C150

470N PE

+

+

-15V
C151

470N PE

TAPE02

Z115B

C188
10U EL

C189
10U EL

Z116_1A

Z116B

TL072 SM

TL072 SM

TAPEO1

0V_SIG

VCRO1

0V_SIG

VCR02

Z110C

Z114C

VCR OUTPUT

6
5

0V_SIG

0V_SIG

6
5

0V_SIG

84

84

SK4B

F

N

PHONO4G

SK5B

F

N

PHONO4G

R183
1M0 SM

R184
1M0 SM

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

84

84

0V_SIG

C176
100N SM

C177
100N SM

C178
100N SM

C179
100N SM

1
2
3
4

6
7
8

+

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

+5V

R110
2K2 SM

R112
22K SM

R111
2K2 SM

Z115_1B

+5V

R135
2K2 SM

R137
22K SM

R136
2K2 SM

Z116_1B

TONE

+5V

C180
100N SM

C181
100N SM

C182
100N SM

C183
100N SM

/TONE

TONE*

OPA2134PA SM

16
15

D2

14

S2

13

V+

12
11

S3

10

D3

9

Z111_3

Z113_3

+15V-15V

0V_SIG

+15V

84

Z117C

R113
22K SM

+

R138
22K SM

+

Z111A
TL072 SM

3
2

C111
10U CERAFINE

Z113A
TL072 SM

3
2

C132
10U CERAFINE

+

Z107_4

C153
100N SM

Z107_13

0V_SIG

0V_SDATA

0V_SLOAD

0V_SCLK

C184
100N SM

C185
100N SM

C154
10U EL

Z111_7

Z113_7

1

1

0V_SIG

R182
100R SM

R200
2R2 SM
R201
2R2 SM
R202
2R2 SM

Z111_1

Z113_1

C155
100N SM

D105
BAV99W DUAL SM

0V_SIG

1618

Z108D
17

DS1844

5
6

R115
2K7 SM

R116
2K7 SM

D111
BAV99W DUAL SM

62

Z108B
7

DS1844

5
6

R140
2K7 SM

R141
2K7 SM

0V_SIG

C156
100N SM

1

0V_SIG

AVCC

SCLK

SDATA

+5V

C186

100N SM

0V_SIG

Z112_3

Z108_19

C113
470N PE

Z114_3

Z108_3

C134
470N PE

LFO

LMO
RFO

RMO

16

R181
10K SM

DS1844

0V_SIG

DS1844

0V_SIG

1519

53

+

C157
100U EL

3

2
14

15

Z107
VSDVC

Z108A
14

0V_SIG

Z108C
4

0V_SIG

0V_SIG

+

R117
5K6 SM

R142
5K6 SM

C187
10U EL

C114
CFKP2 63V 2N2

3
2

C135
CFKP2 63V 2N2

+15V

2

Z117A

3

OPA2134PA SM

6

Z117B

5

OPA2134PA SM

R114
22K SM

7
Z111B

TL072 SM

C112

470N PE

C192

470N PE

+5V

R139
22K SM

7
Z113B

TL072 SM

C133

470N PE

C193

470N PE

+5V

R185
22R SM

Z107_1

7

DVCC

4

LIN

5

LGND

13

RIN

12

RGND

DGND11XCS6DATA9CCLK10XMUTE8AGND

SLOAD

DRAWING TITLE

Integrated amplifier preamp - main signal path

23425

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

Notes:

Filename

J:\Change Control\ECO AGENDA\01 E014 Fuse changes on A32 preamp\L937 1.1.ddb Documents\Schematic\L937C2 1.0 SCH

Circuit Diagram

Z112A
TL072 SM

3
2

R118
22K SM

Z114A
TL072 SM

C136

22P SM

R143
22K SM

+

C190
10U EL

+

C191
10U EL

-15V

C158
22P SM

C159
22P SM

D120
BAS16W SM

C115

22P SM

1

7

Z112B
TL072 SM

Z112_1

5

1

6

Z114B

Z114_1

TL072 SM

5

1

6

+15V -15V

0V_SIG

SK102_1

R186
47R SM

SK102_3

R187
47R SM

+5V

+-RLY100C

RLY DPDT 5V SM

Q100
BC849B

0V_D

Z112_7

7

0V_SIG

7

R144
22K SM

R145
22K SM

+

C137
10U CERAFINE

0V_SIG

D121
BAV99W DUAL SM

RLY DPDT 5V SM

0V_SIG

R203
4K7 SM

01_E014 JBR 28/11/01 Fuses uprated to 2A 1.1
01_1142 JBR 14/8/01 First production release 1.0

ECO No. DESCRIPTION OF CHANGE

Date Printed

C117

+

10U CERAFINE

R119
22K SM

R120
22K SM

+

C116
10U CERAFINE

C138

+

10U CERAFINE

D122
BAV99W DUAL SM

RLY100A

MUTE*

INITIALS

Z106_14

R121
22K SM

Z106_11Z114_7

R146
22K SM

RLY100B

RLY DPDT 5V SM

DATE

SCLK

SDATA

TONEID

0V_D

0V_TONEID

SK102
1
2
3
4

AMPCT4
TO POWER AMP I/P

Drawn by:

JBR28-Nov-2001

SCLK

SDATA

TONEID

IC DS1844

0V_TONEID

0V_SDATA

0V_SCLK

LISTEN 0
LISTEN 1
LISTEN 2
VCR 0
VCR 1
VCR 2
TAPE 0
TAPE 1
TAPE 2

TONE*
TONEID

0V_SDATA

13
12

9

R122
2R2 SM

R124
2R2 SM

R123
2R2 SM

MUTE*

SDATA

0V_SLOAD

0V_SIG

2 3Sheet of

+5V

CLK
DIN
RST

R147
22K SM

R148
22K SM

R149
22K SM

R150
22K SM

SLOAD

0V_SCLK

R188

10K SM

20

Z108E

VCC

1

PS

8

R/W

11

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

0V_MODULE

DRAWING NO.

C118
100N SM

R204
10K SM

C119
10N SM

R151
22K SM

R152
22K SM

R153
22K SM

R154
22K SM

R155
22K SM

FFC22V1MM

L937C2

+

C120
10U EL

SK100
1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16
17

TO MICRO / DISPLAY PCB

18
19
20
21
22

SK101

1

2

3

4

5

6

7

8

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

TO PLUG IN MODULE PCB
21
22

23
24
25
26
27
28
29
30

FFC30V SM

ISSUE

D

C

B

A

4321

D302

BAS16W SM

Q305
2SA1964

D

C

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

Q300
J112

R300
330R SM

C314
1N0 PP

C315
1N0 PP

Q303
J112

Q306
BC846B

D310+

+

C302
220U EL

+

C312
220U EL

D311-

D310
15V 350MW SM

D311
15V 350MW SM

+15V

+

+

I

+15V3

C304
100N SM

C303
3300u 25V

C313
3300u 25V

Z301
LM317T

Vin

0V_PSU

D304

BAS16W SM

Vout

ADJ

A

+3.75V

R302
1K2 SM

R307
220R SM

O

+

C305
10U EL

-15V

D305
BAS16W SM

+15V

0V_PSU

0V_MODULE

R303
470R SM

SK301
1
2
3
4

IDC4S

+5V

+5V

+

C306
470U EL 25V

D

C

D306
S1D

B

D307
S1D

+

UR-

C310
1000u 35V

R304
330R SM

Q301
2SC5248

D308

BAS16W SM

Q307
BC856B

-15V

-15V3

SP300
STAR POINT 4

0V_HF 0V_MODULE

0V_PSU

0V SIG

0V_SIG

B

DRAWING TITLE

Integrated amplifier preamp - power supply

A

23425

Notes:

Circuit Diagram

01_E014 JBR 28/11/01 Fuses uprated to 2A 1.1

A

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

1 2 3 4

Filename

J:\Change_Control\ECO_AGENDA\01_E014 Fuse changes on A32 preamp\L937_1.1.ddb - Documents\Schematic\L937C3_1.0.SCH

01_1142 JBR 14/8/01 First production release 1.0

ECO No. DESCRIPTION OF CHANGE

Date Printed

INITIALS

28-Nov-2001

DATE

Drawn by:

JBR

3 3Sheet of

DRAWING NO.

L937C3

ISSUE

87654321

A85 DISPLAY PCB

D

L865C2_2 0
L865C2_2 0SCH

UDB

Update Box

MICRO

(Small)

UPDATE_SML

D

FD_1

FIDUCIAL

C

B

CHASSIS 1
(BY SK3)

CHASSIS 2
(BY SK1)

0V_D

0V_D

C39
1N0 SM

C45
1N0 SM

FD_2

F DUCIAL

FIX7
FIXING HOLE

FIX1
FIXING HOLE

PCB1

PCB

L865PB_2

FIX2
FIXING HOLE

0V_D 0V_D 0V_D 0V_D 0V_D

FIX8
FIXING HOLE

C40
1N0 SM

C46
1N0 SM

FIX10
FIX NG HOLE

C41
1N0 SM

FIX9
FIXING HOLE

C47
1N0 SM

0V_D0V_D

FIX4
FIXING HOLE

C42
1N0 SM

FIX3
FIXING HOLE

CHASSIS 3
(BY SK2)

FIX5
FIXING HOLE

C43
1N0 SM

FIX11
FIXING HOLE

C48
1N0 SM

0V_D0V_D

FIX6
FIXING HOLE

C49
1N0 SM

C44
1N0 SM

C

B

A

1 2 3 4 5 6 7 8

DRAWING TITLE

MARY AMP DISPLAY PCB

23425

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

Notes

Filename

J:\Completed Projects\A85 (Mary)\mary display\L865 2\l865 2.0 dbase.ddb - Documents\L865 2.0.PRJ

Circuit Diagram

ISSUE 1.1

EDD IR DUAL FOOTPRINT ADDED19/07/2001 2 0

00_1103 JBR SW1 TO SW10 CHANGED29 SEP 2000 1.1

ECO No. DESCRIPTION OF CHANGE

Date Printed

INITIALS

8-Jan-2002

DATE

Drawn by:

JBR

1 2Sheet of

DRAWING NO.

L865C1

ISSUE

A

8765432

1

+5V

R34
150R SM

LED11

LED RED/GRN 3MM

G

LEFTAUDIO

+5V

R55
10K SM

R51
100R SM

R32
10K SM

5

6WP7

SCL

SDA

VDD

A01A12A2

3

Q2
BC847B

+5V

8

10K SM

IND11

C8

100N SM

R1
10K SM

BUT1

C17

100N SM

PB0
SEL7
SEL6
SEL5
SEL4
SEL3
SEL2
SEL1
VPROG

TRANSMIT
RECEIVE

TONEID
SDATA

SLOAD
SCLK

SW6
A1509

0V_D

0V_D

R2
10K SM

SW12 SW11

BUT2

10U EL SM

C11

+

100K SM

100K SM

+5V

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

0V_D

+5V

C5

100N SM

0V_D

R3
10K SMR410K SM

TACTSW SM

BUT3

5

SW8
A1509

BUT4

Z7B

6

R5
10K SMR610K SM

SW7
A1509

BUT5

7

LM393A SM

0V_D

+5V

R43

R41

R42

100K SM

R44
100K SM

Z7A
LM393A SM

3
2

+5V

R49

1

10K SM

0V_D

PHASEA

PHASEB

SEL8

SEL9

MUTE

100

Vcc
PB0
PB1
PB2
PB3
PB4
PB5
PB6
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

F1CLOCK

F2CLOCK

TONE

88

89

90

91

92

Vss

PA093PA194PA295PA396PA497PA598PA699PA7

P8.4/CS0

P8.2/IRQ2

P8.3/IRQ3

H8/3048F

IRIN

86

87

AVss

P8.0/IRQ0

P8.1/IRQ1

DCPROT

VIPROT

ACPRESENT

82

83

84

85

P7.5/AN5

P7.6/AN6/DA0

P7.7/AN7/DA1

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

IND12

IND11

BUT16

IND6

BUT15

IND5

BUT10

IND7

BUT12

IND9

BUT14

IND4

BUT11

IND8

BUT13

IND10

0V_D

80

81

P7.2/AN2

P7.3/AN3

P7.4/AN4

IND2

BUT4

TRANSMIT

RECEIVE

78

79

P7.0/AN0

P7.1/AN1

IND1

BUT5

TACTSW SM

SW13

BUT6

R480R0 SM

RECEIVE
VPROG

PB0

+5V

76

77

Vref

AVcc

P6.6/LWR
P6.5/HWR

P6.4/RD
P6.3/AS

EXTAL

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

H8/3048F

50

BUT3

BUT1

R7
10K SMR810K SM

TACTSW SM

SW14

BUT7

R50
10K SM

C3

100N SM

Z1

75

MD2

74

MD1

73

MD0

72
71
70
69
68

Vcc

67

XTAL

66
65

Vss

64

NM1

63

RES

62

STBY

61
60
59
58
57

Vss

56
55
54
53
52
51

0V_D

CHASSIS 1

+

C14

10U EL SM

0V_D

+5V

C4

100N SM

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

TACTSW SM

SW15

BUT8

SAMHOLD

+5V

+5V

Programming adaptor

R26

10K SM

STANDBY
SP1ON
SP2ON
THERMPROT

RESPIN

SAMTX2
SAMRX2
BUT17

BUT9
BUT8
BUT7
BUT6
BUT2
IND3

0V_D

R68
10K SM

A1506

SW17

5

2V7

6

R37

Z6A

10K SM

1

LM393A SM

C9

100N SM

SK4

12
34
56
78

910
1112
1314

HEADER 7X2HORIZ

D2
BAS16W SM

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

BUT17

Z6B

LM393A SM

2

3

+5V

R9
10K SM

TACTSW SM

SW16

7

0V5

0V_D

+5V

C7

100N SM

0V_D

FFC 22W 1MM HOR

0V_D

BUT9

+5V

0V_D

TRANSMIT

RESPIN

SAMHOLD

Z2

3

Vcc

2

Res

4

Gnd

1

Gnd

DS1233 SM

To preamp board
SK3

22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1

R10
10K SM

SW1
A1509

BUT10

R40
4K7 SM

R38
1K2 SM

X1
16MHZ SM

SEL1
SEL2
SEL3
SEL4
SEL5
SEL6
SEL7
SEL8
SEL9

LEFTAUDIO
MUTE

TONE

Q_117

TONEID

Q_118

SDATA

Q_119

SLOAD

Q_120

SCLK

+5V

SAMRX2

C1

18P SM

C2

18P SM

R35
10K SM

0V_D

DS1233

R72

R11
10K SM

BUT11

SAMTX2

R71

2R2 SM

SW4
A1509

+5V

R45
10K SM

R70

2R2 SM

R36
10K SM

2V7

Z8B

7

LM393A SM

C12

100N SM

R69

2R2 SM

0V_D

R12
10K SM

SW2
A1509

BUT12

2R2 SM

0V52V7

Z8A

3

2

LM393A SM

R13
10K SM

SW5
A1509

BUT13

R39
2K2 SM

0V_D

1

0V5

6

5

+5V

+

C33

220U EL

0V_D

(FIT CLOSE TO SK1)

R14
10K SM

SW3
A1509

BUT14

R15
10K SM

SW10
A1509

BUT15

+5V

R47
4K7 SM

SAMBUSYSAMDATA

R46
1K2 SM

0V_D

SBX1610-52/PIC-26043TM2

Q_54

RX1

+5V

2

O/P
O/P

Case

Case

0V_D

+5V

SK2

1

Q_19
Q_20

2
3
4
5

AMPCT5

0V_D

D5
BAS16W SM

Z12
7815

I

Vin

O

Vout

GND

G

C27

100N SM

D4

SAMDATA
SAMBUSY

+

C34

220U EL

+SUP VFD_VDD2

+

C26
10U EL SM

22V 350MW SM

0V_D

DRAWING TITLE

MARY AMP DISPLAY PCB

23425

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

R16
10K SM

SW9
A1509

BUT16

R17
1K5 SM

LED7

IND1

LED GREEN3.1MM

R18
1K5 SM

LED8

IND2

LED GREEN3.1MM

LED GREEN3.1MM

R19
1K5 SM

LED6

IND3

LED GREEN3.1MM

R20
1K5 SM

IND4

LED3

IND5

LED GREEN3.1MM

+5V

R74
10K SM

IROUT

R76
10K SM

R75
10K SM

R73
10K SM

Q3
BC847B

IRIN

Q4
BC847B

IRIN

3

R27

10K SM

0V_D

PHASEA
PHASEB

+5V

0V_D

R56
10K SM

R57
10K SM

F1CLOCK

F2CLOCK

+5V

GND

GND +5V

1

SW18
ALPS_ENCODER

4

C6

100N SM

5

+5V

R2810K SM

1

A

2

B

3

C

0V_D

+5V

C60B 100PX4 SM

C60D 100PX4 SM

C61B 100PX4 SM

C61D 100PX4 SM

C62B 100PX4 SM

C62D 100PX4 SM

C63B 100PX4 SM

C63C 100PX4 SM

C63D 100PX4 SM

C60A 100PX4 SM

C60C 100PX4 SM

C61A 100PX4 SM

C61C 100PX4 SM

C62A 100PX4 SM

C62C 100PX4 SM

C63A 100PX4 SM

To power amp / PSU

SK1

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

FFC 14W 2.54MM HOR

0V_D

+SUP

Q_121

STANDBY
SP1ON
SP2ON
THERMPRO
VIPROT
DCPROT
ACPRESEN

IRIN

CHASSIS 2

+5V

+

C28

10U EL SM

84

Z6C

LM393A SM

C10

100N SM

84

Z7C

LM393A SM

C15

100N SM

LM393A SM

0V_D

Notes:

Filename

J:\Completed_Projects\A85 (Mary)\mary display\L865_2\l865_2.0 dbase.ddb Documents\L865C2_2.0 SCH

Circuit Diagram

ISSUE 1.1

EDD IR DUAL FOOTPRINT ADDED19/07/2001 2.0

00_1103 JBR 29 SEP 2000 SW1 TO SW10 CHANGED

ECO No. DESCRIPTION OF CHANGE

INITIALS

Date Printed

8-Jan-2002

R21
1K5 SM

LED10

R22
1K5 SM

LED9

IND6

LED GREEN3.1MM

LED GREEN3.1MM

SP1

DOUBLE SIDED
STICKY PAD

10 X 15MM
STICKY PAD DS 10X15MM
SP2

DOUBLE SIDED

STICKY PAD

10 X 15MM
STICKY PAD DS 10X15MM

DC1

DISPLAY CRADLE

E916PM

DISPLAY CRADLE E916PM
DC2

DISPLAY CRADLE

E916PM

DISPLAY CRADLE E916PM

R52
100R SM

R53
100R SM

Q_122
Q_123
Q_124
Q_125
Q_126
Q_127
Q_128

Q_129

84

DATE

C16

100N SM

Drawn by:

JBR

Z8C

R25
1K5 SM

IND7

LED1

IND8

LED GREEN3.1MM

DISP1

R24
1K5 SM

LED4

LED GREEN3.1MM

F1 to F2 = 4Vac 150mA
VDD2 = 40Vdc 20mA

Graphics Display

F11F12F13SIN4VDD15SOUT6LAT7BLK8CLK9VSS10VSS11VDD212F215F216F2

+5V

B1013

DISPDAT

DISPCLK

DISPLAT

DISPBLK

Z11A
AD8532 SM

3

2

5

6

Z11B
AD8532 SM

R58
0R0 SM

R59

7

0R0 SM

84

Z11C

AD8532 SM

2 2Sheet of

R23
1K5 SM

LED2

IND9

LED GREEN3.1MM

0V_D

C25

100N SM

DRAWING NO.

R31
1K5 SM

LED5

IND10

17

VFD_VDD2

+

C29
100U EL SM

L865C2

D

C

B

A

ISSUE

Q1
BC847B

R29
10K SM R30

D

R33

330R SM

IND12

R

0V_D

C

D3
BAS16W SM

DISPDAT

B

DISPCLK
DISPBLK

DISPLAT

C31

10P SM

R64
100R SM

R65
100R SM
R67

100R SM

C32

10P SM

R66
100R SM

0V_D

Z5
24C02 SM

4

VSS

A

0V_D

1 2 3 4 5 6 7 8

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_5

1
2
3
4
5
6
7

Q_6

8

Q_7 Q_8

-15V
0V_HF0V_SIG

SK2

AMPCT8

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

87654321

+

C102
100U SILMIC

R111
56K MF

R124

5K6 MF

R123
10R MF

C119

100P PP

C101

1N0 PP

C110

4N7 PP
C120

1N0 PP

C112

10N PP AX
C111

10N PP AX

R112
100K MF

C105
100N PE

Q 101

R113
100K MF

R114
100K MF

R115
15K MF

TL071CD

R101
100R MF

TR102
BC556B

TR108
BC546B

R116
2M2 MF

74

IC100

3

6

C118

2

10U NP

R117
2M2 MF

TR104
BC556B

D

TR100
BC556B

+

C100
22U EL

R109
12K MF

R110
12K MF

LEFT IN

C

R104
100R MF

SW100B
4PCO

5

6

C108
470P PPW

4

R108
47K MF

C109

100P PPW

TR106
2SA1085

R100
330R MF

TR101
BC556B

TR107
2SA1085

C115

N3 PP

SW100D
4PCO

R105
100R MF

101112

Q_102

R102
100R MF

TR103
BC556B

D100
1N4148

C104
100N PE

0V_SIG0V_HF

C106
100N PE

+15V

TR109
BC546B

R118
22R MF

R119
22R MF

TR105
BC556B

C113

1U0 PE

0V_SIG

R122
39K MF

D

C

LEFT OUT

0V_SIG0V_SIG

B

TR110
BC546B

D101
1N4148

R120
22R MF

A

1 2 3 4 5 6 7 8

TR111
BC546B

D102
1N4148

R121
22R MF

DRAWING TITLE

A85 PHONO STAGE - LEFT CHANNEL

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

C116

470P PPW

23425

TR112
BC546B

+

C103
100U SILMIC

Notes

Filename

G:\DATA\ECO\ECO AGENDA\01 1070 l870 A85 PHONO ISSUE2\L870 2.0.ddb - L870C2 2.0.SCH

TR113
BC546B

TR114
BC546B

R106
100R MF

0V_SIG0V_HF

Circuit Diagram

C117
470P PPW

C107
100N PE

Q_103

-15V

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

2 3Sheet of

DRAWING NO.

L870C2

B

A

ISSUE

87654321

+

C202
100U SILMIC

R211
56K MF

R224

5K6 MF

9

R223
10R MF

C219

100P PP
C201

1N0 PP
C210

4N7 PP

C220

1N0 PP

C212

10N PP AX
C211

10N PP AX

R212
100K MF

C205
100N PE

Q 201

R213
100K MF

R214
100K MF

R215
15K MF

TL071CD

R201
100R MF

TR202
BC556B

TR208
BC546B

R216
2M2 MF

74

IC200

6

3
2

C218
10U NP

R217
2M2 MF

TR204
BC556B

D

TR200
BC556B

+

C200
22U EL

R209
12K MF

R210
12K MF

RIGHT IN

C

R204
100R MF

SW100A
4PCO

2

3

C208

470P PPW

1

R208
47K MF

C209

100P PPW

TR206
2SA1085

R200
330R MF

TR201
BC556B

TR207
2SA1085

R205
100R MF

C215
1N3 PP

7

SW100C
4PCO

8

Q_202

R202
100R MF

TR203
BC556B

D200
1N4148

C204
100N PE

0V_SIG0V_HF

C206
100N PE

+15V

TR209
BC546B

R218
22R MF

R219
22R MF

TR205
BC556B

C213

1U0 PE

0V_SIG

R222
39K MF

D

C

RIGHT OUT

C217

0V_SIG0V_SIG

B

TR210
BC546B

D201
1N4148

R220
22R MF

A

TR211
BC546B

D202
1N4148

R221
22R MF

DRAWING TITLE

A85 PHONO STAGE - RIGHT CHANNEL

23425

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

1 2 3 4 5 6 7 8

Cambridge CB5 9PB

470P PPW

TR212
BC546B

+

C203
100U SILMIC

Notes

Filename

G:\DATA\ECO\ECO AGENDA\01 1070 l870 A85 PHONO ISSUE2\L870 2.0.ddb - L870C3 2.0.SCH

TR213
BC546B

TR214
BC546B

R206
100R MF

0V_SIG0V_HF

Circuit Diagram

470P PPWC216

C207
100N PE

Q_203

-15V

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

3 3Sheet of

DRAWING NO.

L870C3

B

A

ISSUE

87654321

+5V_D

1
2
3
4
5

SPKR1 ON

6

SPKR2 ON

7

THERMPROT

8

VIPROT1

9

DCPROT1
10
11
12
13
14

TP102

TP103

+5V_D

TP104
TP105
TP106
TP107
TP108

0V_D

0V_D

0V_SIG

TP116

0V_LS 0V_HF

SP100

STAR POINT 8

0V_PSU

R107
2R2 SM

D

0V_D

SK100

D

+5V_D

14

IC100G
74HC14D

7

C100
100N SM

+

C102
100U EL

C101
100N SM

R100
1K0 SM

TH100
PTH90DEG

IC100E

74HC14D
IC100F

1011

1213

FFC 14W 2.54MM VER
PIN 1 TO THE LEFT AS YOU LOOK FROM THE FRONT

THERMPROT

0V_D

C

+49V

D100
1N4003F

TR100
BD179

B

RLY101B
RLY SPST SPKR

R103
220R SM

0V_D

TR101
BD179

RLY100B
RLY SPST SPKR

R105
100R SM

R106
100R SM

R104
220R SM

74HC14D

D101
1N4003F

SPKR1 ON

SPKR2 ON

0V_SIG

EMC

C105
1N0 SM

TP110

SK101

F

N

PHONO2G

1

TP109

+49V

-49V

0V_HF

0V_LS

L911C2_1
L911C2_1.1.SCH

INPUT
0V_SIG

0V_HF
VPOS
VNEG

VIPROT
DCPROT
OUTPUT0V_LS

R101
1K0 SM

R102
1K0 SM

TP111

1 2

C103
10N SM

5 6

C104
10N SM

0V_D
RLY101A

RLY SPST SPKR

TP112 TP113

IC100A

74HC14D
IC100C

74HC14D

3 4

SK102A

Top+

Top-

0V_LS

IC100B

74HC14D
IC100D

74HC14D

RLY100A

RLY SPST SPKR

C

VIPROT1

89

DCPROT1

SK102B

Bot+

Bot-

B

+49V

TP100

1

BR100

TP114

1

2

SK103

3

A

MOLEXPWR4

4

TP115

1 2 3 4 5 6 7 8

3

BRGBU8D

+

2

~

~

-

4

-49V

+

C106
10,000u 63V

+

C107
10,000u 63V

C108
100N PC

0V_PSU

C109
100N PC

POWER AMP SUPPLY

TP101

PB

PCB

L911PB_1

DRAWING TITLE

AP85 third channel - top level

23425

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

Notes:

Filename

J:\ECO wip\01 1101 A85 RANGE PCB FUSES AND DC OFFSET\L911 1.1.DDB - Documents\ 911C1 1.1.PRJ

Circuit Diagram

01_1101 JR 4/6/01 DC OFFSET CHANGES 1.1
01_1018

ECO No. DESCRIPTION OF CHANGE

Date Printed

JR 30/1/01 PRODUCTION ISSUE 1.0

INITIALS

4-Jun-2001

DATE

Drawn by:

J Reckless

1 2Sheet of

DRAWING NO.

L911C1

ISSUE

A

87654321

D

R315

TR300
FMMT597

C310
100N SM

3
2

C314
100N SM

TR314
FMMT497

100R SM

PNP CURRENT MIRROR

TR311
FMMT497

R328

4K7 SM

TP302

84

0V_SIG

IC300A

TL072CD

TP303

TR303
FMMT597

NPN CURRENT MIRROR

R317
100R SM

R300
10K SM

+

C300

DZ300

100U EL

15V 350MW SM

0V_HF

0V_SIG

C

INPUT

0V SIG

0V_HF

B

NPUT FILTER V TO I AMP

R324
1K0 SM

DZ302
4V7 350MW SM

DZ303
4V7 350MW SM

0V_SIG

+

C301
100U EL

0V_HF

C309
100N SM

DZ301
15V 350MW SM

R309
10K SM

R327
22K SM

C316
470P PPW

0V_SIG

7

1

C317

470N PE

IC300B

TL072CD

R322
22R SM

R337
22R SM

0V_SIG

R319
100R SM

R333
3K3 SM

DC SERVO

0V_SIG

TP304

R335
3K3 SM

R320
100R SM

R330

6

1M0 SM

5

R331
1K5 SM

R332
1K8 SM

C307

100P SM

TR322

FMMT497

C311
100N PC

C308

100P SM

R316
100R SM

TR301
FMMT597

TR321
FMMT597

R355
6K8 SM

R354
1K0 SM

TR320
FMMT497

TR315
FMMT497

R318
100R SM

TR309
FMMT497

R338
150R SM

BOOTSTRAP

+

C302
100U EL 100V

R352
470R 2W

470R 2W
R353

+

C318
10U EL

+

C306
100U EL 100V

BOOTSTRAP

R339
150R SM

TR306
FMMT597

PRE DRIVER

TR310
FMMT497

R321
22R SM

C312
10N SM

R323
22R SM

TR307
FMMT597

PRE DRIVER

ADJ BIAS

RV300
100R PSET

D300
BAS16W SM

OUTPUT STAGE

TR318
SAP15N

TP305

R325
1K0 SM

R340
100K SM

R326
1K0 SM

TP306

TR319
SAP15P

OUTPUT STAGE

PL300
1
2

MEASURE

BIAS

R341
330R SM

R342
330R SM

R343
100R SM

R344
100R SM

V-I PROTECTION

R334
22K SM

R347
100R SM

R345
0R0 SM

+

C303
100U EL

+

C304
100U EL

R346
0R0 SM

R348
100R SM

R336
22K SM

V-I PROTECTION

D301
BAS16W SM

TR312
FMMT497

TR304
FMMT597

D302
BAS16W SM

D303
1N4003F

DC OFFSET SIGNAL
TO MICRO

D304
1N4003F

0V_HF

R349
100R SM

DCPROT

TR305
FMMT597

TP308

DZ306
4V7 350MW SM

R302
10K SM

R310
4K7 SM

C315
100N SM

R301
10K SM

R329
4K7 SM

TR313
FMMT497

R303
10K SM

R304
10K SM

R311
10K SM

R312
10K SM

0V_HF

TR316
FMMT497

TR308
FMMT597

TR302
FMMT597

R305
10K SM

R306
10K SM

DC OFFSET
DETECTION

R307
10K SM

R313
10K SM

TR317
FMMT497

VI PROTECT
SIGNAL TO MICRO

TP307

R308
22K SM

C320
100U NP

DZ305
4V7 350MW SM

+

C305
10U EL

VIPROT

R351
5R6 2W CF

L300

2U2H LAC SMALL

R350
5R6 2W CF

ZOBEL NETWORK

C319
100N PE

0V_HF 0V_LS

R314
10K SM

C313

100N SM

VPOS

OUTPUT

0V LS

0V HF

VNEG

D

C

B

A

A

DRAWING TITLE

AP85 third channel - output stage

23425

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

1 2 3 4 5 6 7 8

Notes:

Filename

L911C2 1.1.SCH

Circuit Diagram

01_1101 JR 4/6/01 DC OFFSET CHANGES 1.1

JR 30/1/01 PRODUCTION ISSUE 1.001_1018

INITIALS

DATE

Drawn by:

J Reckless4-Jun-2001

2 2Sheet of

DRAWING NO.

L911C2

ECO No. DESCRIPTION OF CHANGE

Date Printed

ISSUE

+5V_D

87654321

R1

SK1

+5V_D

14
13

SK2

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

0V_D

+5V_D

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

R9
10K MF

R10
10K MF

STANDBY
SPKR1 ON
SPKR2 ON
THERMPROT 1
VIPROT 1
DCPROT 1
AC PRESENT
TRIGGER
REMOTE

SPKR1 ON
SPKR2 ON
THERMPROT 2
VIPROT 2
DCPROT 2

R11
10K MF

SP2 SW
SP1 SW
SP1 LED
SPKR2 ON
SPKR1 ON
STANDBY
PWR SW
REMOTE
TRIGGER
AC PRESENT

THERMPROT

Z1

1

PB5

2

PB4

3

PA3

4

PA2

5

PA1

6

PA0

7

PB3

8

PB2

9

PB1

10

PB0

11

VSS

12

(TMR)/ NT

13

PC0

14

PC1

HT48R30 28-DIP-B-0

PB6
PB7
PA4
PA5
PA6

PA7
OSC2
OSC1

VDD
RES

PC5
PC4
PC3
PC2

28
27
26
25
24
23
22
21
20
19
18
17
16
15

DCPROT
VIPROT
SP2 LED
PWR GRN
PWR RED

C1
100N CD

D1

1N4148

+5V_D

0V_D

R16
100K MF

+

C5
10U EL

X1
CST4 00

D

C

10K MF

R2
10K MF

SP2 LED

Q1
BC556BR310K MF

R4
10K MF

R12
560R MF

LED1 LED2

SP1 LED

SW1
A1503

10K MF
Q2
BC556B

10K MF

R13
560R MF

R5

R6

SW2
A1503

330R MF

PWR RED

Q4
BC556B

R14

R

0V_D

SW3
A1506

Q3
BC556B

R15
180R MF

G

LED3

R7
10K MF

R8
10K MF

PWR GRN

D

C

0V_D

0V_D

Z2A

1
2

4
5

74HC32
Z2B

3

6

THERMPROT

VIPROT

+5V_D

C14

100U EL

+5V_D

THERMPROT 1

THERMPROT 2

SPKR1 ON

+

R19
470R MF

Q5
BC546B

VIPROT 1

VIPROT 2

74HC32

D2
1N4148

R17
10K MF

B

R20

0V_D

Q6
BC546B

SPKR2 ON

DCPROT 1

DCPROT 2

10

9

Z2C

74HC32

8

DCPROT

C2
100N CD

C3
100N CD

0V_D

SP2 SW

+

C4
100N CD

C6
100U EL

BY SK1 BY SK2 BY Z1

+

C7
100U EL

SP1 SW

+

C8
100U EL

PWR SW

GND

7

14

VDD

Z2E
74HC32

12
13

Z2D

74HC32

11

B

470R MF

R18
10K MF

R21

0V_D

Q7
BC546B

STANDBY

FIX1
FIX NG HOLE

470R MF

TL1

0V_D

A

EL1

CLOGO

Layout by

Cliff

DD1

PCB MATERIAL

FR4, 1 OZ Cu

FR4_1OZ

0V_D

PS

Photo Strip

PHOTO_STR P

PCB

L910PB_1

PCB

DD2

Drilling

Detail

DRILL_DWG

EL2

Update Box

UPDATE_BOX

TOOL NG

DD3

A3 Vertical

Paper Marker

DD_A3V

TL2
TOOLING

DRAWING TITLE

P85 microcontroller and switch

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

C9
100N CD

FIX2
FIXING HOLE

C10
100N CD

FIX3
FIX NG HOLE

C11
100N CD

FIX4
FIXING HOLE

C12
100N CD

FIX5
FIXING HOLE

0V_D

Notes

Filename

J:\ECO wip\00 1099 L910PB 1.0\L910AY 1\L910AY 1.ddb - L910CT 1 sch

Circuit Diagram

C13
100N CD

00_1099

ECO No. DESCRIPTION OF CHANGE

Date Printed

CL 28/09/00 PRODUCTION RELEASE 1 0

INITIALS

29-Sep-2000

DATE

Drawn by:

CG

1 1Sheet of

DRAWING NO.

A

ISSUE

L910CT

1 2 3 4 5 6 7 8

ARCAM PCB Bill of Materials

Document title: A85 POWER AMPLIFIER AND PSU
Document number: L882RS Issue: 3 Revision: 2 ECO number: 01_1101A
Date: 06/06/01 Created by: JR Page 1 of 3

(Excluding parts for NF.)

Part Qty Iss Description Designators

******** PCB Finish items:
******** (For drawing office use only. Will be
******** kitted from mechanical run-out sheet.)
C12207 2 FUSE 20mm 2A AS F200 F201
F022 2 INS COVER PCB FUSEHOLDER F200 F201

******** PCB Build items:
1A000 4 RES SM W4 1% 0R0 1206 R345 R346 R445 R446
1A010 3 RES SM W4 1% 10R 1206 R217 R220 R221
1A022 8 RES SM W4 1% 22R 1206 R321 R322 R323 R337
R421 R422 R423 R437
1A110 24 RES SM W4 1% 100R 1206 R101 R102 R315 R316
R317 R318 R319 R320
R343 R344 R347 R348
R349 R415 R416 R417
R418 R419 R420 R443
R444 R447 R448 R449
1A115 4 RES SM W4 1% 150R 1206 R338 R339 R438 R439
1A122 2 RES SM W4 1% 220R 1206 R107 R108
1A133 4 RES SM W4 1% 330R 1206 R341 R342 R441 R442
1A147 1 RES SM W4 1% 470R 1206 R226
1A210 17 RES SM W4 1% 1K0 1206 R200 R201 R202 R203
R204 R205 R206 R207
R227 R324 R325 R326
R354 R424 R425 R426
R454
1A215 3 RES SM W4 1% 1K5 1206 R230 R331 R431
1A218 5 RES SM W4 1% 1K8 1206 R219 R224 R225 R332
R432
1A233 4 RES SM W4 1% 3K3 1206 R333 R335 R433 R435
1A247 11 RES SM W4 1% 4K7 1206 R212 R213 R214 R215
R216 R310 R328 R329
R410 R428 R429
1A268 2 RES SM W4 1% 6K8 1206 R355 R455
1A310 33 RES SM W4 1% 10K 1206 R208 R209 R210 R211
R218 R222 R223 R300
R301 R302 R303 R304
R305 R306 R307 R309
R311 R312 R313 R314
R400 R401 R402 R403
R404 R405 R406 R407
R409 R411 R412 R413
R414
1A322 8 RES SM W4 1% 22K 1206 R308 R327 R334 R336
R408 R427 R434 R436
1A410 4 RES SM W4 1% 100K 1206 R228 R229 R340 R440
1A510 2 RES SM W4 1% 1M0 1206 R330 R430
1C856 2 RES CF 2W 5R6 5% R350 R450
1E110 2 RES CF 1W 100R 5% R105 R106
1E133 2 RES CF 1W 330R 5% R103 R104
1H010 3 RES MF W4 1% 10R R100 R351 R451
1J147 4 RES 2W MF 5% 470R R352 R353 R452 R453
1K515 1 RES W25 5% VR25 1M5 R231
1T002 1 THERMISTOR SIEMENS B59008 TH200

ARCAM PCB Bill of Materials

Document title: A85 POWER AMPLIFIER AND PSU
Document number: L882RS Issue: 3 Revision: 2 ECO number: 01_1101A
Date: 06/06/01 Created by: JR Page 2 of 3

2A410 3 CERD 100N 63V 20% RA C224 C225 C226
2C110 4 MLC 100P 50V NPO 5% SM C307 C308 C407 C408
2C210 3 MLC 1N0 50V X7R 10% SM C100 C231 C235
2C310 11 MLC 10N 50V X7R 10% SM C213 C214 C215 C216
C217 C218 C219 C221
C230 C312 C412
2C410 16 MLC 100N 50V X7R 10% SM C201 C202 C203 C204
C220 C232 C309 C310
C313 C314 C315 C409
C410 C413 C414 C415
2D147W 2 PPRO W 470P 63V 5% RA C316 C416
2D168 1 PPRO 680P 5% 63V RA C200
2D422 1 220NF CLASS X2 CAP 275VRMS C234
2H410 4 PCRB 100N 100V 10% RA 5mm C211 C212 C311 C411
2K233 4 SUPPR CAP 3N3 250V C205 C206 C207 C208
2K410 2 PEST 100N 63V 10% C319 C419
2K447 2 PEST 470N 63V 10% C317 C417
2N610 7 ELST 10U 50V C222 C223 C233 C305
C318 C405 C418
2N622 1 ELST 22U 63V C229
2N710 8 ELST 100U 25V C300 C301 C303 C304
C400 C401 C403 C404
2N710B 4 ELST 100U 100V C302 C306 C402 C406
2N810A 1 ELST 1M0 10V C228
2N833 1 ELST 3M3 25V C227
2N910A 2 ELST 10m 63V RA 35mm C209 C210
2V710 2 ELST NON POLAR 100UF 16V C320 C420
3AS16W 8 DIODE SS SM BAS16W D205 D206 D300 D301
D302 D400 D401 D402
3B4003 10 RECTIFIER 1N4003F 1A 200V D100 D101 D200 D201
D202 D203 D303 D304
D403 D404
3BGBU8D 1 BRIDGE RECTIFIER 8A 200V BR200
3CW315V 5 ZENER 15V OW35 SM SOT23 DZ207 DZ300 DZ301
DZ400 DZ401
3CW34V7 9 ZENER 4V7 OW 35 SM SOT23 DZ204 DZ302 DZ303
DZ305 DZ306 DZ402
DZ403 DZ405 DZ406
4A849B 1 TRANS LF SS N SM BC849B TR204
4A856B 2 TRANS LF SS P SM BC856B TR205 TR206
4AFMMT497 24 TRANS LF SS N SM FMMT497 TR201 TR203 TR309
TR310 TR311 TR312
TR313 TR314 TR315
TR316 TR317 TR320
TR322 TR409 TR410
TR411 TR412 TR413
TR414 TR415 TR416
TR417 TR420 TR422
4AFMMT597 21 TRANS LF SS P SM FMMT597 TR202 TR300 TR301
TR302 TR303 TR304
TR305 TR306 TR307
TR308 TR321 TR400
TR401 TR402 TR403
TR404 TR405 TR406
TR407 TR408 TR421
4B179 3 NPN TRANS MP BD179 TR100 TR101 TR200
4CSAP15N 2 TRANS POWER NPN SAP15N TR318 TR418
4CSAP15P 2 TRANS POWER PNP SAP15P TR319 TR419
5B072D 2 IC AUDIO SM DUAL TL072 IC300 IC400

ARCAM PCB Bill of Materials

Document title: A85 POWER AMPLIFIER AND PSU
Document number: L882RS Issue: 3 Revision: 2 ECO number: 01_1101A
Date: 06/06/01 Created by: JR Page 3 of 3

5D7805 1 IC VREG POS 7805 IC201
5J7414D 1 SURFACE MOUNT HEX SCHMITT TRIGGER IC202
5M393AD 1 IC COMPARATOR SM DUAL LM393A IC200
6F110 2 PRES 100R LIN HORIZ RV300 RV400
7A9301 1 TRANSFORMER 3VA 9V+9V TYPE 9301 TX200
7D002C 2 INDUCT 2U2 12x20mm L300 L400
7D327 1 27mH INDUCTOR L200
8A001 1 IEC MAINS CONN PCB INS PX SK203
8D225 1 PHONO SKT 4-WAY EMC GOLD SK104
8D301 1 STEREO JACK PCB SK105
8D302 1 MIN JACK DUAL 3.5mm HSJ1002-01-1020 SK201
8D418G 2 CAMCON BINDING POST 4WAY GOLD SK100 SK101
8K2306 1 MOLEX MINI FIT HCS 6 WAY SK200
8K2308 1 MOLEX MINI FIT HCS 8 WAY SK204
8K2404 3 4-WAY AMP CT CONN SK102 SK106 SK107
8K2406 1 6-WAY AMP CT CONN SK205
8K6201 4 2WAY MOLEX VERT MALE CONNECTOR PL100 PL101 PL300
PL400
8K7014 1 FFC 14W 2.54MM VER PTH SK103
8M101 1 EARTH LEAD EL
8Q003 1 CAGE CLAMP 16A 1 WAY ARC003-236 SK202
8S004 2 FUSEHOLDER 20mm PCB F200 F201
A1008 1 SW PUSH 2PCO SW100
A1404 1 VOLTAGE SELECTOR SLIDE SWITCH SW200
A207 2 RELAY G5Z-2A-E 24V RLY100 RLY101
A219 1 RELAY MAINS DPDT 5V 5A RLY200
C3751 1 FUSE R452 T750mA F202
E5402 1 MAINS EMC SHIELD SH200
F006 1 HEATSINK CLIP TO220 13/8.6 DC/W HS200
F008 1 HEATSINK TO220 8.6 DEGC/W HS200
L882PB_3 1 X PRINTED CIRCUIT BOARD PCB

******** Obsolete, absent, redundant, or incorrect issue in PDM:
L882PB_3 1 X PRINTED CIRCUIT BOARD PCB

***************************************************************************
*********************** Additions Since Last Issue ************************
***************************************************************************

Part Qty Iss Description Designators

1A310 2 RES SM W4 1% 10K 1206 R314 R414
1A322 2 RES SM W4 1% 22K 1206 R308 R408
C3751 1 FUSE R452 T750mA F202

***************************************************************************
*********************** Deletions Since Last Issue ************************
***************************************************************************

Part Qty Iss Description Designators

1A247 2 RES SM W4 1% 4K7 1206 R314 R414
1A310 2 RES SM W4 1% 10K 1206 R308 R408
C3501 1 FUSE R452 T500mA F202

ARCAM PCB Bill of Materials

Document title: A85 PREAMPLIFIER
Document number: L866RS Issue: 3 Revision: 1 ECO number: 01_1101
Date: 06/06/01 Created by: JR Page 1 of 3

(Excluding parts for NF.)

Part Qty Iss Description Designators

1A022 1 RES SM W4 1% 22R 1206 R185
1A047 6 RES SM W4 1% 47R 1206 R108 R109 R133 R134
R186 R187
1A122 1 RES SM W4 1% 220R 1206 R307
1A133 2 RES SM W4 1% 330R 1206 R300 R304
1A147 1 RES SM W4 1% 470R 1206 R303
1A210 14 RES SM W4 1% 1K0 1206 R100 R101 R102 R125
R126 R127 R156 R157
R158 R189 R190 R191
R195 R196
1A212 1 RES SM W4 1% 1K2 1206 R302
1A222 4 RES SM W4 1% 2K2 1206 R110 R111 R135 R136
1A227 4 RES SM W4 1% 2K7 1206 R115 R116 R140 R141
1A247 1 RES SM W4 1% 4K7 1206 R203
1A256 2 RES SM W4 1% 5K6 1206 R117 R142
1A310 4 RES SM W4 1% 10K 1206 R181 R182 R188 R204
1A322 41 RES SM W4 1% 22K 1206 R112 R113 R114 R118
R119 R120 R121 R137
R138 R139 R143 R144
R145 R146 R147 R148
R149 R150 R151 R152
R153 R154 R155 R162
R163 R164 R165 R166
R167 R168 R169 R170
R171 R172 R173 R174
R175 R176 R177 R178
R179
1A410 16 RES SM W4 1% 100K 1206 R103 R104 R105 R128
R129 R130 R159 R160
R161 R180 R192 R193
R194 R197 R198 R199
1A510 6 RES SM W4 1% 1M0 1206 R106 R107 R131 R132
R183 R184
1A822 6 RES SM W4 1% 2R2 1206 R122 R123 R124 R200
R201 R202
2C022 6 MLC 22P 50V NPO 5% SM C115 C136 C148 C149
C158 C159
2C110 4 MLC 100P 50V NPO 5% SM C108 C109 C129 C130
2C210 6 MLC 1N0 50V X7R 10% SM C100 C121 C139 C160
C164 C186
2C310 1 MLC 10N 50V X7R 10% SM C119
2C410 36 MLC 100N 50V X7R 10% SM C104 C105 C106 C107
C118 C125 C126 C127
C128 C143 C144 C145
C146 C152 C153 C155
C156 C168 C169 C170
C171 C172 C173 C174
C175 C176 C177 C178
C179 C180 C181 C182
C183 C184 C185 C304
2D147W 14 WIMA FKP2 470P 63V CAP C101 C102 C103 C122
C123 C124 C140 C141
C142 C161 C162 C163
C165 C166

ARCAM PCB Bill of Materials

Document title: A85 PREAMPLIFIER
Document number: L866RS Issue: 3 Revision: 1 ECO number: 01_1101
Date: 06/06/01 Created by: JR Page 2 of 3

2D210 2 PPRO 1N0 5% 63V RA C314 C315
2D222W 2 WIMA FKP2 2N2 63V CAP C114 C135
2H410 2 PCRB 100N 100V 10% RA 5mm C147 C167
2K447 8 PEST 470N 63V 10% C112 C113 C133 C134
C150 C151 C192 C193
2N610 8 ELST 10U 50V C120 C154 C187 C188
C189 C190 C191 C305
2N710 3 ELST 100U 25V C110 C131 C157
2N722 2 ELST 220U 16V C302 C312
2N747 1 ELST 470U 25V RA C306
2N810C 2 ELST 1M0 35V C300 C310
2N833 2 ELST 3M3 25V C303 C313
2P610CC 6 ELEC 10U 50V CERAFINE C111 C116 C117 C132
C137 C138
3AS16W 5 DIODE SS SM BAS16W D120 D302 D304 D305
D308
3AV99W 22 DIODE SS SM BAV99W D100 D101 D102 D103
D104 D105 D106 D107
D108 D109 D110 D111
D112 D113 D114 D115
D116 D117 D118 D119
D121 D122
3BS1D 4 RECT S1D 1A 200V SM D300 D301 D306 D307
3CW315V 2 ZENER 15V OW35 SM SOT23 D310 D311
4A846B 1 TRANS LF SS N SM BC846B Q306
4A849B 1 TRANS LF SS N SM BC849B Q100
4A856B 1 TRANS LF SS P SM BC856B Q307
4B1964 1 TRANS AUDIO DRIVER P 2SA1964 Q305
4B5248 1 TRANS AUDIO DRIVER N 2SC5248 Q301
4J112 2 TRANS JFET N J112 Q300 Q303
5A1844 1 IC DS1844S-010 Z108
5AVSDVC 1 IC AUDIO DIGITAL VOL SM Z107
5B072D 6 IC AUDIO SM DUAL TL072 Z109 Z110 Z111 Z112
Z113 Z114
5B2134 3 IC OPAMP DUAL SM OPA2134PA Z115 Z116 Z117
5D317T 1 IC VREG POS LM317T Z301
5S408DY 6 IC 8 TO 1 MUX DG408DY SO16 Z100 Z101 Z102 Z103
Z104 Z105
5S413DY 1 IC QUAD SPST CMOS SW SO16 Z106
8D225 4 PHONO SKT 4-WAY EMC GOLD SK2 SK3 SK4 SK5
8D226 1 PHONO SKT 2-WAY EMC GOLD SK6
8K2304 1 MOLEX MINI FIT HCS 4 WAY SK300
8K2404 1 4-WAY AMP CT CONN SK102
8K2408 1 8-WAY AMP CT CONN SK103
8K6604 1 4-WAY FR LOCK CONN SK301
8K8322 1 22-WAY FFC CONN SM 1mm SK100
8K8330 1 30-WAY FFC VERT CONN SM 1MM SK101
A216 1 RELAY DPDT 5V SM NEC EB2-5NU RLY100
C3751 2 FUSE R452 T750mA F300 F301
L866PB_3 1 X PRINTED CIRCUIT BOARD PCB1

ARCAM PCB Bill of Materials

Document title: A85 PREAMPLIFIER
Document number: L866RS Issue: 3 Revision: 1 ECO number: 01_1101
Date: 06/06/01 Created by: JR Page 3 of 3

******** Obsolete, absent, redundant, or incorrect issue in PDM:
L866PB_3 1 X PRINTED CIRCUIT BOARD PCB1

***************************************************************************
*********************** Additions Since Last Issue ************************
***************************************************************************

Part Qty Iss Description Designators

C3751 2 FUSE R452 T750mA F300 F301

***************************************************************************
*********************** Deletions Since Last Issue ************************
***************************************************************************

Part Qty Iss Description Designators

C3501 2 FUSE R452 T500mA F300 F301

ARCAM PCB Bill of Materials

Document title: A85 / A32 Integrated amplifier preamp PCB
Document number: L937RS Issue: 1 Revision: 1 ECO number: 01_E014
Date: 28/11/01 Created by: J Reckless Page 1 of 2

Part Qty Iss Description Designators

1A022 1 RES SM W4 1% 22R 1206 R185
1A047 6 RES SM W4 1% 47R 1206 R108 R109 R133 R134
R186 R187
1A110 1 RES SM W4 1% 100R 1206 R182
1A122 1 RES SM W4 1% 220R 1206 R307
1A133 2 RES SM W4 1% 330R 1206 R300 R304
1A147 1 RES SM W4 1% 470R 1206 R303
1A210 14 RES SM W4 1% 1K0 1206 R100 R101 R102 R125
R126 R127 R156 R157
R158 R189 R190 R191
R195 R196
1A212 1 RES SM W4 1% 1K2 1206 R302
1A222 4 RES SM W4 1% 2K2 1206 R110 R111 R135 R136
1A227 4 RES SM W4 1% 2K7 1206 R115 R116 R140 R141
1A247 1 RES SM W4 1% 4K7 1206 R203
1A256 2 RES SM W4 1% 5K6 1206 R117 R142
1A310 3 RES SM W4 1% 10K 1206 R181 R188 R204
1A322 41 RES SM W4 1% 22K 1206 R112 R113 R114 R118
R119 R120 R121 R137
R138 R139 R143 R144
R145 R146 R147 R148
R149 R150 R151 R152
R153 R154 R155 R162
R163 R164 R165 R166
R167 R168 R169 R170
R171 R172 R173 R174
R175 R176 R177 R178
R179
1A410 16 RES SM W4 1% 100K 1206 R103 R104 R105 R128
R129 R130 R159 R160
R161 R180 R192 R193
R194 R197 R198 R199
1A510 6 RES SM W4 1% 1M0 1206 R106 R107 R131 R132
R183 R184
1A822 6 RES SM W4 1% 2R2 1206 R122 R123 R124 R200
R201 R202
2C022 6 MLC 22P 50V NPO 5% SM C115 C136 C148 C149
C158 C159
2C110 4 MLC 100P 50V NPO 5% SM C108 C109 C129 C130
2C210 5 MLC 1N0 50V X7R 10% SM C100 C121 C139 C160
C164
2C310 1 MLC 10N 50V X7R 10% SM C119
2C410 39 MLC 100N 50V X7R 10% SM C104 C105 C106 C107
C118 C125 C126 C127
C128 C143 C144 C145
C146 C152 C153 C155
C156 C168 C169 C170
C171 C172 C173 C174
C175 C176 C177 C178
C179 C180 C181 C182
C183 C184 C185 C186
C304 C308 C309
2D147W 14 WIMA FKP2 470P 63V CAP C101 C102 C103 C122
C123 C124 C140 C141
C142 C161 C162 C163
C165 C166

ARCAM PCB Bill of Materials

2210 SK100

Document title: A85 / A32 Integrated amplifier preamp PCB
Document number: L937RS Issue: 1 Revision: 1 ECO number: 01_E014
Date: 28/11/01 Created by: J Reckless Page 2 of 2

2D210 2 PPRO 1N0 5% 63V RA C314 C315
2D222W 2 WIMA FKP2 2N2 63V CAP C114 C135
2K410 2 PEST 100N 63V 10% C147 C167
2K447 9 PEST 470N 63V 10% C112 C113 C133 C134
C150 C151 C192 C193
C307
2N610 8 ELST 10U 50V C120 C154 C187 C188
C189 C190 C191 C305
2N710 3 ELST 100U 25V C110 C131 C157
2N722 2 ELST 220U 16V C302 C312
2N747 1 ELST 470U 25V RA C306
2N810C 2 ELST 1M0 35V C300 C310
2N833 2 ELST 3M3 25V C303 C313
2P610CC 6 ELEC 10U 50V CERAFINE C111 C116 C117 C132
C137 C138
3AS16W 5 DIODE SS SM BAS16W D120 D302 D304 D305
D308
3AV99W 22 DIODE SS SM BAV99W D100 D101 D102 D103
D104 D105 D106 D107
D108 D109 D110 D111
D112 D113 D114 D115
D116 D117 D118 D119
D121 D122
3BS1D 4 RECT S1D 1A 200V SM D300 D301 D306 D307
3CW315V 2 ZENER 15V OW35 SM SOT23 D310 D311
4A846B 1 TRANS LF SS N SM BC846B Q306
4A849B 1 TRANS LF SS N SM BC849B Q100
4A856B 1 TRANS LF SS P SM BC856B Q307
4B1964 1 TRANS AUDIO DRIVER P 2SA1964 Q305
4B5248 1 TRANS AUDIO DRIVER N 2SC5248 Q301
4J112 2 TRANS JFET N J112 Q300 Q303
5A1844 1 IC DS1844S-010 Z108
5AVSDVC 1 IC AUDIO DIGITAL VOL SM Z107
5B072D 6 IC AUDIO SM DUAL TL072 Z109 Z110 Z111 Z112
Z113 Z114
5B2134 3 IC OPAMP DUAL SM OPA2134PA Z115 Z116 Z117
5D317T 1 IC VREG POS LM317T Z301
5S408DY 6 IC 8 TO 1 MUX DG408DY SO16 Z100 Z101 Z102 Z103
Z104 Z105
5S413DY 1 IC QUAD SPST CMOS SW SO16 Z106
8D225 4 PHONO SKT 4-WAY EMC GOLD SK2 SK3 SK4 SK5
8D226 1 PHONO SKT 2-WAY EMC GOLD SK6
8K2304 1 MOLEX MINI FIT HCS 4 WAY SK300
8K2404 1 4-WAY AMP CT CONN SK102
8K2408 1 8-WAY AMP CT CONN SK103
8K6604 1 4-WAY FR LOCK CONN SK301
8K8022B 1 Connector 22way Molex 52806­8K8330 1 30-WAY FFC VERT CONN SM 1MM SK101
A216 1 RELAY DPDT 5V SM NEC EB2-5NU RLY100
C3202 2 FUSE R452 T2A F300 F301
L937PB_1 1 PRINTED CIRCUIT BOARD PCB1

SUMMARY OF CHANGES FROM 1.0 TO 1.1

DELETED:
C3751 2 FUSE R452 T750mA F300 F301

ADDED:
C3202 2 FUSE R452 T2A F300 F301

ARCAM

Document title: A85 DISPLAY PCB
Document number: L865RS Issue:2 Revision: 0 ECO number: 01_E028
Date: 13/02/02 Created by: WAF Page 1 of 2

Part Qty Iss Description Designators

1A000 3 RES SM W4 2% 0R0 R58 R59 R48
1A110 7 RES SM W4 1% 100R 1206 R51 R52 R53 R64 R65

1A115 1 RES SM W4 2% 150R R34
1A133 1 RES SM W4 2% 330R R33
1A212 2 RES SM W4 2% 1K2 R38 R46
1A215 10 RES SM W4 2% 1K5 R20 R23 R24 R31 R17

1A222 1 RES SM W4 2% 2K2 R39
1A247 2 RES SM W4 2% 4K7 R40 R47
1A310 36 RES SM W4 2% 10K R49 R50 R56 R57 R73

1A410 4 RES SM W4 2% 100K R41 R42 R43 R44
1A822 4 RES SM W4 1% 2R2 1206 R69 R70 R71 R72
2C010A 2 MLC 10P 50V NPO 10% SM C31 C32
2C018 2 MLC 18P 50V X7R 10% SM C1 C2
2C210 11 MLC 1N0 50V X7R 10% SM C39 C40 C41 C42 C43

2C410 14 MLC 100N 50V X7R 10% SM C3 C4 C5 C6 C7 C8

2M610 4 ELST 10U 50V SM C11 C14 C26 C28
2M710 1 ELST 100U 25V SM C29
2N722 2 ELST 220U 16V C33 C34
2W110X4 10 CAP PACK NPO 0612 4X100P 50V 5% C50 C51 C52 C53 C54

3AS16W 3 DIODE SS SM BAS16W D2 D3 D5
3C5251B 1 ZENER 22V OW 35 SM SOT23 D4
3D006 1 LED RED/GREEN 3MM L-93WEGW LED11
3D007 10 LED GREEN 3.1MM SLR-37MG3F LED1 LED2 LED3 LED4

4A847 4 TRANS LF SS N SM BC847B Q1 Q2 Q3 Q4
5D7815 1 IC VREG POS 7815 Z12
5G2402 1 IC CMOS EPROM 24C02 SM Z5
5H1233A 1 IC MICRO RESET DS1233 SM Z2
5H3048 1 H8/3048 128K FLASH MICROCONTROLLER Z1
5M393AD 3 IC COMPARATOR SM DUAL LM393A Z6 Z7 Z8
5M8532 1 DUAL OUTPUT SINGLE SUPPLY AMP AD8532

7X040 1 XTAL 16MHZ SM GSX49-4 X1
8K2005 1 5-WAY AMP CT CONN SK2
8K6315 1 14 WAY DIL HEADER HORIZ SK4
8K7014A 1 FFC 14W 2.54MM HOR PTH SK1
8K8022A 1 22-WAY FFC CONN HORIZ 1MM PTH SK3
A1211 1 EC16B2414 SW18
A1505 6 TACT SWITCH SM SDTM-610-NTR SW11 SW12 SW13 SW14

A1506 1 TACT SWITCH BOURNS SDTX-644 SW17
A1509 10 TACT SWITCH SM SDTM-620-NTR SW1 SW2 SW3 SW4 SW5

PCB Bill of Materials

R66 R67

R18 R19 R21 R22 R25

R74 R75 R76 R1 R2
R3 R4 R5 R6 R7 R8
R9 R10 R11 R12 R13
R14 R15 R16 R26 R27
R28 R29 R30 R32 R35
R36 R37 R45 R55 R68

C44 C45 C46 C47 C48
C49

C9 C10 C12 C15 C16
C17 C25 C27

C55 C60 C61 C62 C63

LED5 LED6 LED7 LED8
LED9 LED10

Z11

SW15 SW16

SW6 SW7 SW8 SW9 SW10

ARCAM

Document title: A85 DISPLAY PCB
Document number: L865RS Issue:2 Revision: 0 ECO number: 01_E028
Date: 13/02/02 Created by: WAF Page 2 of 2

B1013 1 MN12818A VFD ITRON DISP1
B2107 1 REMOTE RX PIC-26043TM2 38KHZ RX1
E916PM 2 DISPLAY CRADLE E916PM DC1 DC2
F163 2 STICKY PAD S/A 10 X 15mm SP1 SP2
L865PB_2 1 X PRINTED CIRCUIT BOARD PCB1

******** Obsolete, absent, redundant, or incorrect issue in PDM:
L865PB_2 1 X PRINTED CIRCUIT BOARD PCB1

***************************************************************************
*********************** Additions Since Last Issue ************************
***************************************************************************

Part Qty Iss Description Designators

B2107 1 REMOTE RX PIC-26043TM2 38KHZ RX1
E916PM 2 DISPLAY CRADLE E916PM DC1 DC2
L865PB_2 1 X PRINTED CIRCUIT BOARD PCB1

***************************************************************************
*********************** Deletions Since Last Issue ************************
***************************************************************************

PCB Bill of Materials

Part Qty Iss Description Designators

B2103 1 REMOTE RX SBX1610-52 38KHZ RX1
L865PB_1 1 X PRINTED CIRCUIT BOARD PCB1

TITLE A85 PHONO PCB
DWG. No. L870RS ISSUE 2.0 ECO No 01_1070 DATE 17-4-01
DRAWN BY JAG RUN-OUT SHEET SHEET 1 of 1

Part Qty Iss Description Designators

1H010 2 RES MF W4 1% 10R R123 R223
1H022 8 RES MF W4 1% 22R R118 R119 R120 R121
R218 R219 R220 R221
1H110 10 RES MF W4 1% 100R R101 R102 R104 R105
R106 R201 R202 R204
R205 R206
1H133 2 RES MF W4 1% 330R R100 R200
1H256 2 RES MF W4 1% 5K6 R124 R224
1H312 4 RES MF W4 1% 12K R109 R110 R209 R210
1H315 2 RES MF W4 1% 15K R115 R215
1H339 2 RES MF W4 1% 39K R122 R222
1H347 2 RES MF W4 1% 47K R108 R208
1H356 2 RES MF W4 1% 56K R111 R211
1H410 6 RES MF W4 1% 100K R112 R113 R114 R212
R213 R214
1H522 4 RES MF W4 1% 2M2 R116 R117 R216 R217
2A410 1 CERD 100N 63V -20% +80% RA C1
2D110N 2 PPRO 100P 63V 5% RA C119 C219
2D110W 2 PPRO W 100P 63V 5% RA C109 C209
2D147W 6 PPRO W 470P 63V 5% RA C108 C116 C117 C208
C216 C217
2D210 4 PPRO 1N0 5% 63V RA C101 C120 C201 C220
2D213N 2 PPRO 1N3 63V 5% RA C115 C215
2D247N 2 PPRO 4N7 63V 5% RA C110 C210
2D310 4 PPRO 10N 63V 1% AXIAL C111 C112 C211 C212
2K410 8 PEST 100N 63V 10% C104 C105 C106 C107
C204 C205 C206 C207
2K510 2 CAP MKS2 1U0 16V 10% C113 C213
2N622 2 ELST 22U 63V C100 C200
2P710AS 4 ELEC 100U 25V SILMIC C102 C103 C202 C203
2U610 2 ELST NON POLAR 10UF 35V C118 C218
3A4148 6 SSDIODE 1N4148 75V D100 D101 D102 D200
D201 D202
4A1085 4 TRANS LF SS P 2SA1085 TR106 TR107 TR206
TR207
4A546 14 TRANS LF SS N BC546B TR108 TR109 TR110
TR111 TR112 TR113
TR114 TR208 TR209
TR210 TR211 TR212
TR213 TR214
4A556 12 TRANS LF SS P BC556B TR100 TR101 TR102
TR103 TR104 TR105
TR200 TR201 TR202
TR203 TR204 TR205
5B071 2 IC FET OPAMP TL071 IC100 IC200
8D230 1 PHONO SKT 2-WAY HOR EMC GOLD SK1
8K2408 1 8-WAY AMP CT CONN SK2
A1013 1 SW PUSH 4PCO SW100
L870PB_2 1 X PRINTED CIRCUIT BOARD PCB1

******** Obsolete, absent, redundant, or incorrect issue in PDM:

TITLE A85 PHONO PCB
DWG. No. L870RS ISSUE 2.0 ECO No 01_1070 DATE 17-4-01
DRAWN BY JAG RUN-OUT SHEET SHEET 2 of 1

L870PB_2 1 X PRINTED CIRCUIT BOARD PCB1

***************************************************************************
*********************** Additions Since Last Issue ************************
***************************************************************************

Part Qty Iss Description Designators

2D210 2 PPRO 1N0 5% 63V RA C120 C220
L870PB_2 1 X PRINTED CIRCUIT BOARD PCB1

***************************************************************************
*********************** Deletions Since Last Issue ************************
***************************************************************************

Part Qty Iss Description Designators

2D147W 2 PPRO W 470P 63V 5% RA C114 C214
L870PB_1 1 X PRINTED CIRCUIT BOARD PCB1

ARCAM PCB Bill of Materials

Document title: P85 THIRD CHANNEL
Document number: L911RS Issue: 1 Revision: 1 ECO number: 01_1101
Date: 06/06/01 Created by: JR Page 1 of 2

Part Qty Iss Description Designators

1A000 2 RES SM W4 1% 0R0 1206 R345 R346
1A022 4 RES SM W4 1% 22R 1206 R321 R322 R323 R337
1A110 13 RES SM W4 1% 100R 1206 R105 R106 R315 R316
R317 R318 R319 R320
R343 R344 R347 R348
R349
1A115 2 RES SM W4 1% 150R 1206 R338 R339
1A122 2 RES SM W4 1% 220R 1206 R103 R104
1A133 2 RES SM W4 1% 330R 1206 R341 R342
1A210 7 RES SM W4 1% 1K0 1206 R100 R101 R102 R324
R325 R326 R354
1A215 1 RES SM W4 1% 1K5 1206 R331
1A218 1 RES SM W4 1% 1K8 1206 R332
1A233 2 RES SM W4 1% 3K3 1206 R333 R335
1A247 3 RES SM W4 1% 4K7 1206 R310 R328 R329
1A268 1 RES SM W4 1% 6K8 1206 R355
1A310 13 RES SM W4 1% 10K 1206 R300 R301 R302 R303
R304 R305 R306 R307
R309 R311 R312 R313
R314
1A322 4 RES SM W4 1% 22K 1206 R308 R327 R334 R336
1A410 1 RES SM W4 1% 100K 1206 R340
1A510 1 RES SM W4 1% 1M0 1206 R330
1A822 1 RES SM W4 1% 2R2 1206 R107
1C856 2 RES CF 2W 5R6 5% R350 R351
1J147 2 RES 2W MF 5% 470R R352 R353
1T002 1 THERMISTOR SIEMENS B59008 TH100
2C110 2 MLC 100P 50V NPO 5% SM C307 C308
2C210 1 MLC 1N0 50V X7R 10% SM C105
2C310 3 MLC 10N 50V X7R 10% SM C103 C104 C312
2C410 7 MLC 100N 50V X7R 10% SM C100 C101 C309 C310
C313 C314 C315
2D147W 1 PPRO W 470P 63V 5% RA C316
2H410 3 PCRB 100N 100V 10% RA 5mm C108 C109 C311
2K410 1 PEST 100N 63V 10% C319
2K447 1 PEST 470N 63V 10% C317
2N610 2 ELST 10U 50V C305 C318
2N710 5 ELST 100U 25V C102 C300 C301 C303
C304
2N710B 2 ELST 100U 100V C302 C306
2N910A 2 ELST 10m 63V RA 35mm C106 C107
2V710 1 ELST NON POLAR 100UF 16V C320
3AS16W 3 DIODE SS SM BAS16W D300 D301 D302
3B4003 4 RECTIFIER 1N4003F 1A 200V D100 D101 D303 D304
3BGBU8D 1 BRIDGE RECTIFIER 8A 200V BR100
3CW315V 2 ZENER 15V OW35 SM SOT23 DZ300 DZ301
3CW34V7 4 ZENER 4V7 OW 35 SM SOT23 DZ302 DZ303 DZ305
DZ306
4AFMMT497 11 TRANS LF SS N SM FMMT497 TR309 TR310 TR311
TR312 TR313 TR314
TR315 TR316 TR317
TR320 TR322
4AFMMT597 10 TRANS LF SS P SM FMMT597 TR300 TR301 TR302
TR303 TR304 TR305
TR306 TR307 TR308
TR321

ARCAM PCB Bill of Materials

Document title: P85 THIRD CHANNEL
Document number: L911RS Issue: 1 Revision: 1 ECO number: 01_1101
Date: 06/06/01 Created by: JR Page 2 of 2

4B179 2 NPN TRANS MP BD179 TR100 TR101
4CSAP15N 1 TRANS POWER NPN SAP15N TR318
4CSAP15P 1 TRANS POWER PNP SAP15P TR319
5B072D 1 IC AUDIO SM DUAL TL072 IC300
5J7414D 1 SURFACE MOUNT HEX SCHMITT TRIGGER IC100
6F110 1 PRES 100R LIN HORIZ RV300
7D002C 1 INDUCT 2U2 12x20mm L300
8D226 1 PHONO SKT 2-WAY EMC GOLD SK101
8D418G 1 CAMCON BINDING POST 4WAY GOLD SK102
8K2304 1 MOLEX MINI FIT 4 WAY SK103
8K6201 1 2WAY MOLEX VERT MALE CONNECTOR PL300
8K7014 1 FFC 14W 2.54MM VER PTH SK100
A213 2 RLY SPST 24V SPKR RLY100 RLY101
L911PB_1 1 X PCB PB

******** Obsolete, absent, redundant, or incorrect issue in PDM:
L911PB_1 1 X PCB PB

***************************************************************************
*********************** Additions Since Last Issue ************************
***************************************************************************

Part Qty Iss Description Designators

1A310 1 RES SM W4 1% 10K 1206 R314
1A322 1 RES SM W4 1% 22K 1206 R308

***************************************************************************
*********************** Deletions Since Last Issue ************************
***************************************************************************

Part Qty Iss Description Designators

1A247 1 RES SM W4 1% 4K7 1206 R314
1A310 1 RES SM W4 1% 10K 1206 R308

TITLE P85 SWITCH BOARD
DWG. No. L910PB ISSUE 1.0 ECO No 00_1099 DATE 29/09/00
DRAWN BY CL RUN-OUT SHEET SHEET 1 of 2

part Qty Iss Description Designators

******** PCB Finish items:
******** (For drawing office use only. Will be
******** kitted from mechanical run-out sheet.)
5B483028 1 IC CMOS MICRO HT48R30 28-DIP-B-0 Z1

******** PCB Build items:
1H118 1 RES MF W4 1% 180R R15
1H133 1 RES MF W4 1% 330R R14
1H147 3 RES MF W4 1% 470R R19 R20 R21
1H156 2 RES MF W4 1% 560R R12 R13
1H310 13 RES MF W4 1% 10K R1 R2 R3 R4 R5 R6
R7 R8 R9 R10 R11
R17 R18
1H410 1 RES MF W4 1% 100K R16
2A410 9 CERD 100N 63V -20% +80% RA C1 C2 C3 C4 C9 C10
C11 C12 C13
2N610 1 ELST 10U 50V C5
2N710 4 ELST 100U 25V C6 C7 C8 C14
3A4148 2 SSDIODE 1N4148 75V D1 D2
3D006 1 LED RED/GREEN 3MM L-93WEGW LED3
3D007 2 LED GREEN 3.1MM SLR-37MG3F LED1 LED2
4A546 3 TRANS LF SS N BC546B Q5 Q6 Q7
4A556 4 TRANS LF SS P BC556B Q1 Q2 Q3 Q4
5J7432 1 HCMOS 74HC32 Z2
7W005 1 CER RESON 4.00MHz X1
8K7014A 2 FFC 14W 2.54MM HOR PTH SK1 SK2
8S028N 1 IC SOCKET 28 NARROW Z1
A1503 2 A TACT SWITCH SKHVPE SW1 SW2
A1506 1 TACT SWITCH BOURNS SDTX-644 SW3
L910PB_1 1 X PRINTED CIRCUIT BOARD PCB

******** Prototype or pre-production parts used:
A1503 2 A TACT SWITCH SKHVPE SW1 SW2

******** Obsolete, absent, redundant, or incorrect issue in PDM:
L910PB_1 1 X PRINTED CIRCUIT BOARD PCB

***************************************************************************
********************* Additions Since L910RS Issue C **********************
***************************************************************************

Part Qty Iss Description Designators

A1503 2 A TACT SWITCH SKHVPE SW1 SW2
L910PB_1 1 X PRINTED CIRCUIT BOARD PCB

***************************************************************************
********************* Deletions Since L910RS Issue C **********************

TITLE P85 SWITCH BOARD
DWG. No. L910PB ISSUE 1.0 ECO No 00_1099 DATE 29/09/00
DRAWN BY CL RUN-OUT SHEET SHEET 2 of 2

***************************************************************************

Part Qty Iss Description Designators

A1504 2 TACT SWITCH 2-PIN LOW PROF SW1 SW2
L910PB_C 1 PRINTED CIRCUIT BOARD PCB

A85 General Assembly Parts List

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

A L813RC
B

ITEM 240V 115V 100V SILVER BLACK DESCRIPTION WHERE USED QTY

C12406 C12406 TBA
E804HK
E804MI

E821CH
E83001
E032AY
E912MC
E850MC
E853MC
E858PM
E859MC
E860MC
E866MC
E869PM
E879PM
E879SL
E907MC
E920MC
F022
F037
F038
F062
F065
F082
F162
F164

HA3A16A
HA3V10A
HA3V06A
HA4A12B
HA5L20B
HA5K70B
HA6K45A

L907TX

REMOTE CONTROL
TRANSF A85 100V REPLACE 7A9301 AT TX200

T4AL F USE FUSE & SPARE FUSE HOLDER 2
HEAT-SINK
MAINS INSULATOR ON TOP OF CHASSIS UNDER TX

CHASSIS
TX GASKET UNDER TX 1
REAR PANEL
85 AMP TRANSISTOR CLAMP ON HEAT-SINK E804HK 4
HEAT SHUNT
2000 A85 PRE-AMP REG CLAMP
LARGE VOLUME KNOB
PHONO BLANKING PLATE
MODULE BLANK
A85 TOROIDAL SHIELD BETWEEN TOROID TX & CHS 1
TACT BUTTON POWER
FOOT
CONFIGURATION LABEL CHASSIS 1
KOOL PAD HEAT-SINK 1
HEAT SINK CLAMP HEAT SINK 1
FUSE HOLDER COVER FOR FUSE HOLDERS 2
TOROID CLAMP 90MM DIA. FOR TX 1
RUBBER WASHER ON TOP OF TX 1
FUSE CLIP FOR SPARE FUSE 1
ADHESIVE CABLE CLIP FOR TX SCREEN WIRE 1
TO220 SIL PAD UNDER VOLTAGE REG 3
TAPE 50m ROLL ON TOP OF HEAT SINK 0.003
DAMPING PAD COVER TO FP 400M

M3 x 16mm SCREW HEATSHUNT 2
MC TORX M3X10 STZP 14
M3 x 6mm SCREW MOTHER PCB & SUB-FRONT 11
M4 x 12mm SCREW RR PAN ‘E’ EARTH 2
M5 x 20mm HEX HEAD BOLT BLACK CLAMP E912MC TO E804HK 4
M5 x 70mm BOLT HEAT SIN K SCREWS 3
M6 x 45mm BOLT TX FXG 1

TRANSFORMER FITTED ON
PCB L865AY

SPACER

1
1

1
1

1
1

1
1
1
1
1

1
6

M

A85 General Assembly Parts List

ITEM 230V 115V 100V SILVER BLACK DESCRIPTION W H ERE US ED QTY

HA6K60A
HF4V09B
HJ4A00A
HJ4C00D
HL4SA
HL4SB
HL5EB
HP008
K5408
L865AY
L937AY

L882AY
L882TX L882TX L879TX
L914CA
L915CA
L916CA
L917CA

L894AY

E802SL

E834CP E833CP COVER PLATE
E973AY E980AY FASCIA ASS EM BL Y
HA4V06S HA4V06B M4 X 6mm SCREW COVER TO CHS 4

TRANSBOLT
No. 4 x 9mm SCREW REAR & MODULES 17
M4 NUT RR PAN ‘E’ EARTH 1
M4 WAISTED NUT RR PAN ‘E’ EARTH 1
WASHER
M4 SHAKE PROOF RR PAN ‘E’ EARTH 1
M5 WASHER BLACK HEATSINK WASHER CTRE 3
SNAP RIVET BLACK PLASTIC (3000) BLANKING PLATES 4
SLEEVE FOR LIGHT PIPES (6mm)
A85 DISPLAY PCB ASSEMBL Y
A85 PRE AMP PCB ASSEMBLY
PREVIOUS BOARD FITTED L866AY
A85 PCB ASSEMBLY
A85 TRANSFORMER TX 1
DISP - PRE CABLE ASSEMBLY
DISP - PWR CABLE ASSEMBLY
PWR - HEADPHONE CABLE ASSEMBLY
PWR - PRE CABLE ASSEMBLY

100V LABEL COVER VOL SEL SW HOLE 1

1

3

1
1
1

1

1
1
1
1
1
1

P85 General Assembly

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

5B483028 HOLTEK PLUS L819SW Z1 of L910AY 1
8K004 JUMPER SOCKET 0.1" M7571-05 2
8K006 CONNECTOR 14MM SHORTING BAR

P2148
C12406 C12406 TBA FUSE T4AT FUSE & SPARE FUSE HOLDER 2
E031AY REAR PANEL ASSEMBLY 1
E804HK HEAT-SINK 1
E804MI MAINS INSULATOR ON TOP OF CHASSIS UNDER TX

E821CH CHASSIS 1
E823AP TX MASK On Top of TX 1
E83001 TX GASKET UNDER TX 1
E861MC P85 3RD CHANEL BLANKING PLATE RAER PANEL 1
E866MC A85 TOROIDAL SHIELD BETWEEN TOROID TX & CHS 1
E869PM TACT BUTTON POWER 1
E879PM FOOT 6
E879SL CONFIGURATION LABEL CHASSIS 1
E907MC KOOL PAD HEAT SINK 1
E912MC 85 AMP TRANSISTOR CLAMP FOR HEAT-SINKS 4
E916SL E916SL E917SL FUSE LABEL 2
E920MC HEATSINK CLAMP HEAT SINK 1
F022 FUSE HOLDER COVER FOR FUSE HOLDERS 2
F037 TOROID CLAMP FOR TX 1
F038 RUBBER WASHER ON TOP OF TX 2
F065 ADHESIVE CABLE CLIP FOR TX SCREEN WIRE 1
F162 TAPE 50m ROLL ON TOP OF HEAT SINK 0.003
F164 DAMPING PAD COVER TO FP 400MM
F200 HOLE BLANKING GROMMET FOR REAR PANEL ‘LINK PARKING' 2
HA3V10A M3 x 10mm SCREW MOTHER PCB & SUB-FRONT 9
HA 3V06A MC TORX M3X6 STZP 4
HA4A12B M4 x 12mm SCREW RR PAN ‘E' EARTH 1
HA5K70B M5 x 70mm BOLT HEATSINK SCREWS 3
HA5L20B M5 x 20MM HEX HEAD BOLT BLACK

ST'L
HA6K60A M6 x 60mm BOLT TX FXG 1
HF4V09B No. 4 x 9mm SCREW REAR 16
HJ4A00A M4 NUT EARTH 1
HL4SA M4 SHAKE PROOF CHASSIS EARTH 2
HL5EB M5 WASHER BLACK HEAT-SINK WASHER CTRE 3
K5408 SLEEVE FOR LIGHT PIPES (6mm) 1
L882AY POWER SUPPLY & AMP PCB 1

1

1

SPACER

CLAMPING OF E912MC TO E804HK 4

P85 General Assembly

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

L884TX L884TX L880TX A85P TRANSFORMER 1
L910AY SWITCH PCB 1
L915CA CABLE FFC 0.1" 14WAY A85 DISP - PWR 1
E834CP E833CP COVER PLATE 1
E974AY E990AY FACIA ASSY 1
HA4V06S HA4V06B M4 X 6mm SCREW 4

P85/3 General Assembly

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

5B483028 PIC CHIP + L819SW 1
8K004 2 WAY JUMPER SKT 2
8K006 CONNECTOR 14MM SNORTING BAR

P2148
C12406 C12406 TBA FUSE 20MM 4AT FUSE & SPARE FUSE HOLDER 2
E031AY REAR PANEL ASSEMBLY 1
E804HK HEAT-SINK 1
E804MI MAINS INSULATOR ON TOP OF CHASSIS UNDER TX

E806HK P85 3RD CHANNEL HEAT-SINK 1
E821CH CHASSIS 1
E823AP P85 TX MASK 1
E83001 TX GASKET UNDER TX 1
E866MC TORODIAL SAFETY SHEILD UNDER TX & WASHER 1
E869PM TACT BUTTON POWER 1
E879PM FOOT 6
E879SL CONFIGURATION LABEL CHASSIS 1
E907MC KOOL PAD HEAT SINK 1
E909MC P85 3RD CHANNEL SIL PAO 1
E912MC 85 AMP TRANSISTOR CLAMP FOR HEAT-SINKS E804HK & E806HK 6
E921MC HEATSINK CLAMP HEAT SINK 1
E922SL P85 3RD CHANEL FUSE LABEL 2
F022 FUSE HOLDER COVER FOR FUSE HOLDERS 2
F037 TOROID CLAMP FOR TX 1
F038 RUBBER WASHER ON TOP OF TX 2
F065 ADHESIVE CABLE CLIP FOR TX SCREEN WIRE 1
F065 ADHESIVE CABLE CLIP FOR TX SCREEN WIRE 1
F162 TAPE 50m ROLL ON TOP OF HEAT SINK 0.003
F164 DAMPING PAD COVER TO FP 400MM
F200 HOLE BLANKING GROMMET FOR REAR PANEL 2
HA3V10A M3 x 10mm SCREW MOTHER PCB & SUB-FRONT 22
HA3V06A MC TORX P/H M3X6 STZP 4
HA4A12B M4 x12mm SCREW
HA5K70B M5 x 70mm BOLT HEATSINK SCREWS 5

1

1

SPACER

P85/3 General Assembly

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

HA5L20B M5 x 20MM HEX HEAD BOLT BLACK

ST=L
HA6K60A M6 x 60mm BOLT TX FXG 1
HF4V09B No. 4 x 9mm SCREW REAR 20
HJ4A00A M4 NUT FOR HEAT SINK 1
HL4SA M4 SHAKE PROOF CHASSI S EARTH 2
HL5EB M5 WASHER BLACK HEAT-SINK WASHER CTRE 5
K5408 SLEEVE FOR LIGHT PIPES (6mm) 1
L882AY POWER SUPPLY & AMP PCB 1
L884TX L884TX L880TX A85 TRANSFORMER TX 1
L910AY SWITCH PCB 1
L911AY A85 3RD CHANNEL 1
L915CA CABLE FFC 0.1" 14WAY A85 DISP - PWR 1
L919CA CABLE FFC 0.1" 14WAY A85 3RD

CHANNEL
E832CP E831CP COVER PLATE 1
E974AY E990AY FACIA ASSY 1
HA4V06S HA4V06B M4 X 6mm SCREW COVER SIDE 4

CLAMP E912MC TO E804HK /
E806HK

1

6