DiVA A85, P85 & P85/3 Amplifiers Service Manual

DiVA A85, P85 & P85/3 Amplifiers Service Manual
Service Manual
A85
Issue 2.0
DiVA A85, P85 & P85/3
Amplifiers
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 preamplifier is a high-performance, DC coupled design
with microprocessor control of input select, two independent tape
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 source material 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 to the CMOS multiplexers. 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 multiplexers, 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 the cost of a slightly higher noise floor. It is an
inverting configuration, which is restored to correct polarity by the
inverting electronic 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 2nd pole being formed by R180 and C147 (for
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 the 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 high frequency feedback occurs around 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 interconnect 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 for the bass and a simple shelving filter for the treble.
Left channel description
The input is attenuated by 6dB and biased to a voltage 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 resonant LCR circuit. This has an impedance minimum 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’ bass without causing lots of sub-audio loudspeaker
cone excursion which wastes power and may damage the drive
units.
The digital pots Z108D and Z108A control the bass and treble
respectively. This is done by moving the wiper connected 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 the output, to prevent clunks when the tone controls
are activated.
Z108 is controlled by a simple 3-wire serial interface from the
microprocessor. Each of the digital lines has its own ground 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 the feed-forward
and feedback resistors in an inverting gain configuration. In this
way, it can allow output signal swings of up to 22Vpp whilst
operating from a single +5VDC power supply. Also, it allows the
user the choice of external circuitry to fine-tune the performance.
The gain is controlled from the 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 are 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 unregulated voltage should 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 are discrete compound emitter 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 zener diode. Q305 and Q306 form a complementary
Darlington NPN transistor which is configured as an emitter
follower, producing the +15VDC at its output. C303 is to provide
bulk charge storage and to reduce the AC output impedance of the
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 amplifier supply relay (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, thermal protection)
5.
Receive and demodulate RC5 remote style control codes via
the rear panel jack and transmit them to the micro controller
6.
Send a 12V trigger output via the rear panel jack for control
of an auxiliary power amp when the unit is on
7.
Receive a 12V trigger input from the rear jack (for use 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 voltage 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 event of user or thermal overload. Since it is a DCcoupled design, the unit senses DC at the output and triggers the
micro to turn off the loudspeaker relays in the event of excessive
levels (possibly due to a faulty source component or short circuit
output transistor).
The output stage uses Sanken specialised ‘audio amplifier’ power
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 the measured performance is independent
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. graphic EQ) between the output of the preamp and the 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 all three PCBs within the unit). All of the separately
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 hierarchy containing the other sheets is self explanatory. Each
of the port names shown on the top sheet connects to the port of
the same name 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 damaging the unit. If the user selects 115V operation
and then connects the unit to a 230V supply, the varistors 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 isolation breakdown.
Relay RLY200 switches the primary side of the mains transformer,
allowing the micro to control the on / off status of the 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 present on SK203, irrespective of the on / off status 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 multi-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 amplifier 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 associated components are to detect whenever AC
mains is present at the IEC socket. This is to notify the
microprocessor if the user has unplugged the mains cord, so that it
can take the necessary action (muting all the outputs and switching
off the mains relay). The reservoir capacitors should last at least 4
mains cycles which gives the microprocessor 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 passing on a logic signal to the microprocessor. The
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 when analogue levels are near the threshold point.
TH200 is a positive tempco thermistor placed adjacent to the
heatsink on which the output transistors 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 to the micro in the event of either channel suffering 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 coupled and there is an active integrating servo to
remove DC offsets from the output.
The basic principle of operation is follows:
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 changing 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 ‘feedback current’ flows 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 supply current very small indeed. This is why the term
‘current feedback’ is used - it is the current flowing in the
feedback resistors that sets the overall gain of the amplifier.
IC300B acts as an inverting integrator and its purpose is 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 negative supply pin and pulling 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 DZ302 and DZ303. This is to prevent the 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 as an input filter - this is a first order
low pass filter with a corner frequency of around 340kHz to
prevent RF signals from being injected into the front end of the
amplifier. The corner frequency was chosen 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 amplifier IC300A is acting as a non-inverting gain of
2, driving the input signal into a 44W impedance to ground via
R322 and R337. Its output voltage will be an accurate
amplification of its input voltage (i.e. the signal on pin 1 should
look identical to that on pin 3 but at twice the amplitude). The opamp 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 potential 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 sourced 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 conditions), to ensure accurate operation independent of
the small variations between the transistors in the current mirrors.
They also ensure that the current passing down the next stage is
reasonably constant as the internal temperature of the amplifier
changes, swamping out small thermal variations in the VBE of the
mirror transistors.
R319 and R320 slightly decouple the rails to the current mirrors
from the main power rails of the amplifier, to allow the bootstrap
circuit to operate. The bootstrap consists 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 transistors and thus give the greatest power output and best
thermal efficiency 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 provide 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 bandwidth of around 75MHz, whilst ensuring a closed
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 approximation). R333 and R335 provide a ‘zero’ in the 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 stages to operate correctly. C311 is there to ensure that
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 loosely couple the outputs of the pre-driver
stage to the inputs of the Darlington power output 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 C318 ensure that both halves of the output stage
receive an equal AC signal component.
The output transistors are TR318 and TR319. 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 hFE of 20,000) they provide an
inbuilt emitter resistor (thick film power resistor of 0W22) and
temperature sensing diodes which closely and rapidly track the
VBE versus temperature characteristic of the power transistors,
allowing for easy, fast-responding and reasonably accurate control
of quiescent current (one of the major headaches of class B
amplifier design!)
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 together at the input for the 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
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 protection...
Transistors TR312 and TR304, along with the network of resistors
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 into a short circuit. R345, C303, R346 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 their associated components send a signal to
the microprocessor when the instantaneous protection circuits are
having to work ‘hard’ to prevent amplifier overload. This instructs
the micro that the user is severely abusing the 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.
The left channel has designators beginning with 100, and the right
with 200. For the purposes of this description the left channel will
be described, as the right channel the same in all respects.
The amplifier is a small signal class A voltage feedback amplifier
with switchable gain. The input consists of an actively loaded
differential pair of very low noise PNP transistors (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 quiescent current
for the entire amplifier. The active load consists of TR110 &
TR111, which forms part of a differential current mirror with
TR112,113 & 114. This differential stage also has an active load
(TR102 & TR103) to keep gain to a maximum.
Both of these differential stages are designed to have as much gain
as possible to enable the single stage design. The RIAA response
is
achieved
in
the
feedback
network:
C101,110,111,112,119,120,&R115,112. C115 is used to correct
between MM & MC gains as the amplifier is non-inverting.
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 other two poles change the feedback resistor
value to alter the gain. MM: R105 and in parallel for MC R123.
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 is any positive DC present, then TR316 will turn
on, which turns on TR305 and thus activates the DC protection
line to the micro, turning off the loudspeaker relays.
The DC offset is controlled by a non-inverting servo built around
IC100. The amount of servo current is different for each gain
setting via 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 and an approximation of the RIAA/IEC curve (-2dB @
20Hz).
If there is any negative DC present, then TR308 will turn on,
which turns on TR317 which then turns on TR305 in turn, causing
the same effect.
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.
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.
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
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
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
(HIGH = FAULT)
(HIGH = ON)
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
00_1129
Date
Description of Change
02/10/00
01/11/00
00_1138
27/11/00
01_1030
23/02/01
01_1068
01_1101
11/04/01
04/06/01
01_1142
01_1178
22/08/01
12/10/01
01_E014
02_E033
02_E035
28/11/01
31/01/02
04/02/02
A85 – Fascia position changed to prevent display buttons sticking
A85, P85, P85/3 – Improved stability under heavy clipping of amplifier R345,
R346, R445, R446 changed from 100R to 0R link
C307, C308, C407, C408 changed from 47P to 100P capacitors
A85, P85, P85/3 – C303, C304, C403 changed from 10uF to 100uf capacitors –
this prevents protection circuit from operating when driving a 4 ohm load at
low frequency
A85, P85, P85/3 – RV300, RV400 changed to 220R presets to make it easier to
adjust the bias settings
A85, P85, P85/3 – New output device clamp fitted to heatsink
A85, P85, P85/3 – Sensitivity of DC offset detection circuit reduced – Power
amp cct R308, R408 changed to 22K - R314, R414 changed to 10K
PSU surface mount fuse F202 up rated from 500mA to 750mA
A85 – Preamp board upgraded from L866 to L937
A85, P85, P85/3 – Speaker terminals changed from Camcon to 4mm binding
post
A85 – Preamp board fuses F300, F301 up rated to 2A surface mount
A85 – Extra pad F038 fitted under TX to stop TX coming loose in transit
A85, P85, P85/3 – Main 20mm fuse rating changed to 4AT
Software History
ECO
Number
01_1072
Date
Version
Description of Change
18/04/01
1.1
01_1095
01_1167
01_1179
01_E011
21/05/01
12/09/01
26/10/01
23/11/01
1.2
1.3
2.0
2.1
02_E048
15/02/02
2.2
Remote standby action changed from turning unit completely off
to putting unit into standby
Delay added to start H8 start up routine (volume control chip)
Volume chip read/write protocol changed
Added the processor mode option
Corrected the welcome message saving fault. This fault was
introduced with version 2.0 software
Corrected the processor loop volume jump when v/c adjusted
Current Fuse Ratings (20/02/02)
Fuse Position
Main Supply fuses - A85, P85, P85/3
PSU fuse F202 - A85, P85, P85/3
Preamp fuses F300, F301 – A85
Fuse Rating
2 x 4AT 20mm (Arcam part number C12406)
750mA surface mount (Arcam part number C3751)
2A surface mount (Arcam part number C3202)
Quiescent Current Setting
Left channel
Right channel
Measure points indicated on PCB Adjust RV300 for 8.5mV cold or 12 mV when warm
Measure points indicated on PCB Adjust RV400 for 8.5mV cold or 12 mV when warm
Fault Diagnostics
Fault
No power
Unit functions ok but no audio
Volume control locks up
DC offset
Unit fails to respond to commands
Unit gets very hot
Action
Check fuses
Check power supply rails
Check preamp fuses
Check RL100A (volume control mute relay)
Check +5V supply rail
Check mute signal line
Check software version is 2.0 or higher
Check equipment connected to amp for DC on the audio leads
Check alterations as per ECO 01_1101 have been fitted
Check ribbon cable from display to main board
Check ribbon cable from display to preamp board
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).
2
3
4
5
6
L882C3
L882C3_3.2.SCH
INPUT
0V_SIG
0V_LS
0V_HF
VPOS
VNEG
INPUT
0V_SIG
0V_LS
0V_HF
VPOS
VNEG
VIPROT_R
DCPROT_R
LS R
VIPROT
DCPROT
OUTPUT
0V_D
+5V(D)
0V_PSU
VPOS
PWRON
VNEG
VIPROT_L
THPROT_uC
VIPROT_R
VIPROT_uC
0V_TRIG
AC_PRES
DCPROT_L DCPROT_uC
DCPROT_R
RC5 IN
TRG IN
STANDBY
VIPROT_L
VIPROT_R
0V_TRIG
DCPROT_L
DCPROT_R
TP101
L SIG
SK104B
2
1
FROM PREAMP
0V_LS_L
TP102
SK104A
N
LS R
TP100
EMC
PL101
L
SK105
LHC
RHC
PHONO4G
SK107
R103
TP119
6
7
R104
330R 1W CF
TP120
HPSKT
TR101
BD179
TR100
BD179
D101
1N4003F
R101
SPKR1 ON
100R SM
R102
R105
R106
100R 1W CF 100R 1W CF
SPKR2 ON
100R SM
AMPCT4
R107
220R SM
R108
220R SM
6
2
1
5
4
RLY101C
RLY G5Z-2A-E
1
2
3
4
330R 1W CF
2
3
1
R
SW100B
2PCO
0V_PSU
C
4
TP118
5
0V_SIG
0V_SIG
D100
1N4003F
RLY100C
RLY G5Z-2A-E
AMPCT4
C100 0V_SIG
1N0 SM
PHONO4G
SP100
STAR_8
F
N
AMPCT4
0V_LS_L
7
1
2
3
4
R SIG
C
F
8
+5V_D
+49V
-49V
THERMPROT
VIPROT
AC PRESENT
DCPROT
REMOTE
TRIGGER
SK106
PL100
SK102
1
2
3
4
0V_HF_L
0V_LS_R
2
LS L
3
2
1
L882C2
L882C2_3.2.SCH
D
TP121
1
0V_HF_R
6
+49V
SW100A
2PCO
1
5
0V_D
0V_D
0V_PSU
L882C4
L882C4_3.2.SCH
R SIG
0V_SIG
0V_LS_R
0V_HF_R
+49V
-49V
0V_TRIG
VIPROT_L
DCPROT_L
LS L
VIPROT
DCPROT
OUTPUT
0V_SIG
4
L SIG
0V_SIG
0V_LS_L
0V_HF_L
+49V
-49V
D
8
7
3
1
0V_D
INTEGRATED / PRE-POWER
MODE SELECT SWITCH
SK100A
RLY100A
LS L
SK100B
RLY101A
Top+
TP111
+5V_D
TP113
RLY G5Z-2A-E
Bot+
TP115
RLY G5Z-2A-E
PCB
0V_LS_L
PCB
B
TopSK103
1
2
3
4
5
6
7
8
9
10
11
12
13
14
R100
+49V
B
Bot-
CAMCON_G
CAMCON_G
L882PB_3
10R MF
EL
STANDBY
SPKR1 ON
SPKR2 ON
THERMPROT
VIPROT
DCPROT
AC PRESENT
TRIGGER
REMOTE
0V_D
TP103
TP104
TP105
TP106
TP107
TP108
TP109
TP110
TP117
SK101A
RLY100B
LS R
SK101B
RLY101B
Top+
TP112
TP114
RLY G5Z-2A-E
EARTH LEAD
8M101
EARTH LEAD
Bot+
TP116
RLY G5Z-2A-E
0V_LS_R
Top-
Bot-
CAMCON_G
CAMCON_G
FFC 14W 2.54MM VER
8K7014
DRAWING TITLE
A
A85 amplifier and PSU - top sheet
23425
A & R Cambridge Ltd.
Pembroke Avenue
Denny Industrial Centre
Waterbeach
Cambridge CB5 9PB
1
2
3
4
Circuit Diagram
Notes:
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
2.4
00_1138
JR
27/11/00
NO CHANGE TO THIS SHEET
2.3
00_1129
JR
1/11/00
NO CHANGE TO THIS SHEET
2.2
00_1115
JR
16/10/00
NO CHANGE TO THIS SHEET
2.1
00_1086
JR
19/9/00
NO CHANGE TO THIS SHEET
2.0
ECO No.
Filename
INITIALS
5
6-Jun-2001
6
DESCRIPTION OF CHANGE
Drawn by:
Date Printed
L882C1_3.2.PRJ
DATE
J Reckless
7
Sheet 1 of 4
DRAWING NO.
ISSUE
L882C1
8
A
1
2
3
4
5
6
7
8
NEUTRAL
SK204
7
2
6
1
5
1
HS200
TO220HS08REG
TX200
0V
MOLEXPWR8
F202
9V
T750mA SM
N
E
DPDT5V
SK203
LIVE
IEC3 NO RIVETS
L
SW200B
VOL SEL SLIDE
C205
3N3 MAINS
SH200
EMCMAINS
Green
TP202
3N3 MAINS
AS2A
C206
3N3 MAINS
TP200
NEUTRAL
SK202
TP206
CAGECLAMP1
NEUTRAL
SW200A
VOL SEL SLIDE
D200
1N4003F
115V
0V 6
7
9V
NF
VR201
VDR 115V
C208
F201
TP210
3N3 MAINS
4
Vin
D202
1N4003F
C225
100N CD
+
+5V_D
O
Vout
+5V(D)
TP205
C226
100N CD
+ C228
1000u 10V
C227
3300u 25V
D201
1N4003F
DPDT5V
I
C224
100N CD
RLY200B
LIVE
TP207
EARTH
2
3
TP201
LIVE
1
BC200
TOOLING4.1
NF
VR200
VDR 115V
C207
F200
L
E
N
EMC Shield
IC201
7805
TP204
5
RLY200A
D
9VRMS
HS
3
TP203
GND
8
G
D
4
D203
1N4003F
0V_D
0V 8
115V
TX 3VA 9301
0V_D
AS2A
C234
MAINS WIRING AND AUXILIARY SUPPLY
220N X2 CLASS
R231
1M5 VR25
+5V_D
9VRMS
R219
1K8 SM
IC202E
C
TR204
BC849B
+49V
1
+
5
1
4
~
0V_PSU
+ C210
10,000u 63V
0V_PSU
0V_D
MICROPROCESSOR SIGNALS INTERFACE
AMPCT6
C212
100N PC
4
MOLEXPWR6
1
2
3
4
5
6
C211
100N PC
2
~
+ C229
22U EL
+5V_D
TP209
VNEG
14
2
3
-
6
74HC14D
D206
BAS16W SM
SK205
SK200
3
AC_PRES
10R SM
10K SM
VPOS
+ C209
10,000u 63V
C
R220
10
R211
TP208
BR200
BRGBU8D
11
POWER AMP SUPPLY
TH200
PTH90DEG
C201
100N SM
IC202G
74HC14D
C202
100N SM
IC202F
-49V
12 R221
10R SM
13
7
R205
1K0 SM
CARRIER FILTER AND DEMODULATOR
74HC14D
+5V_D
R209
10K SM
TRG IN
THPROT_uC
R223
10K SM
0V_D
IC200A
B
TP211 470R SM
Near to PCB
JACK3.5X2
1
R228
3
100K SM
LM393A SM
DZ204
4V7 350MW SM
R227
1K0 SM
+5V_D
IC200C
LM393A SM
L200
27mH
R224
1K8 SM
C200
680P PP
R229
100K SM
C232
100N SM
+ C233
10U EL
B
IC202A
4
R226
SK201A
8
2
VIPROT_L
MODULATED RC5
REMOTE CONTROL INPUT
R230
1K5 SM
R208
10K SM
VIPROT_R
IC200B
7
1K0 SM
10K SM
LM393A SM
R225
1K8 SM
2
TR205
BC856B
R213
C203
100N SM
4K7 SM
C214
10N SM
R202
1K0 SM
R222
6
1
74HC14D
IC202B
C230
10N SM
5
RC5 IN
R201
3
VIPROT_uC
4
R214
4K7 SM
C215
10N SM 74HC14D
R206
1K0 SM
C219
10N SM
C218
10N SM
C231
1N0 SM
0V_D
0V_D
+5V_D
0V_TRIG
+49V
TR200
BD179
D205
BAS16W SM
C213
10N SM
A
STANDBY RELAY CONTROL
TR202
FMMT597
DZ207
15V 350MW SM
+ C223
10U EL
DCPROT_R
R210
10K SM
PWRON
CAMCON_G
SK101C
23425
1N0 SM
2
9
DCPROT_uC
8
C217
10N SM 74HC14D
DRAWING TITLE
CHASS
1
74HC14D
A85 amplifier - power supply and microcontroller interface
C235
0V_D
C204
100N SM
R216
4K7 SM
R207
1K0 SM
C221
10N SM
0V_D
0V_TRIG
4K7 SM
1K0 SM
+ C222
10U EL
0V_TRIG
TR203
FMMT497
TR206
BC856B
R215
C220
100N SM
TP212
JACK3.5X2
R212
6
4K7 SM
C216
10N SM
R204
R217
10R SM
SK201B
Far from PCB
1K0 SM
5
IC202D
TR201
FMMT497
TRIGGER OUTPUT
APPROX 13.5VDC
60mA MAX CURRENT
R200
1K0 SM
DCPROT_L
R218
10K SM
+5V_D
RLY200C
DPDT5V
IC202C
R203
A & R Cambridge Ltd.
Pembroke Avenue
Denny Industrial Centre
Waterbeach
Cambridge CB5 9PB
3
4
5
Circuit Diagram
Notes:
01_1101
JR
00_1134
MGM
6
17/11/00
POWER SUPPLY FUSES AND DC OFFSET
3.2
NO CHANGE TO THIS SHEET
2.4
JR
27/11/00
NO CHANGE TO THIS SHEET
2.3
00_1129
JR
1/11/00
NO CHANGE TO THIS SHEET
2.2
00_1115
JR
16/10/00
NO CHANGE TO THIS SHEET
2.1
00_1086
JR
19-9-00
R231, C234, C235 ADDED FOR EMC
2.0
INITIALS
DATE
DESCRIPTION OF CHANGE
Drawn by:
Date Printed
L882C2_3.2.SCH
6/4/01
00_1138
ECO No.
Filename
A
0V_D
6-Jun-2001
7
J Reckless
Sheet 2 of 4
ISSUE
DRAWING NO. L882C2
8
1
2
3
4
5
6
7
8
VPOS
D
D
R319
100R SM
R315
100R SM
R300
10K SM
R316
100R SM
PRE DRIVER
PNP CURRENT MIRROR
TR300
FMMT597
TR310
FMMT497
TR301
FMMT597
R301
10K SM
+
C300
100U EL
DZ300
15V 350MW SM
TR309
FMMT497
R321
22R SM
TR302
FMMT597
TR321
FMMT597
OUTPUT STAGE
R338
150R SM
3K3 SM
TR311
FMMT497 C317
TR318
SAP15N
DC SERVO
R328
4K7 SM
C
R324
INPUT
3
1K0 SM
DZ302
4V7 350MW SM
TP304
2
R322
22R SM
TL072CD
DZ303
4V7 350MW SM
4
R327
22K SM
+
R343
100R SM
R340
100K SM
D303
1N4003F
TR312
FMMT497
R349
100R SM
R345
0R0 SM
R355
6K8 SM
R351
C
10R MF
MEASURE
BIAS
(SET TO 16mV)
L300
2U2H LAC SMALL
DC OFFSET SIGNAL
TO MICRO
DCPROT
+ C318
10U EL
+ C304
100U EL
C312
10N SM
R326
1K0 SM
+ C306
100U EL 100V
TP306
BOOTSTRAP
TR303
FMMT597
R344
100R SM
TR305
FMMT597
R346
0R0 SM
R304
10K SM
R348
R342
TR304
FMMT597
D304
1N4003F
100R SM
C308
TR319
SAP15P
100P SM
TR320
FMMT497
0V_SIG
R339
150R SM
OUTPUT STAGE
TR306
FMMT597
ZOBEL NETWORK
DC OFFSET
DETECTION
C313
R307
10K SM
TP308
R336
22K SM
C319
100N PE
0V_LS
R308
22K SM
R302
10K SM
D302
BAS16W SM
100N SM
0V_HF
0V_LS
TR316
FMMT497
DZ306
4V7 350MW SM
V-I PROTECTION
R310
4K7 SM
R313
10K SM
C320
100U NP
R314
10K SM
C315
100N SM
0V_HF
C301
100U EL
R350
5R6 2W CF
R303
10K SM
330R SM
3K3 SM
DZ305
4V7 350MW SM
+ C305
10U EL
100R SM
470R 2W MF 5%
R353
R354
1K0 SM
R335
R306
10K SM
TR313
FMMT497
+ C303
100U EL
1
2
D300
BAS16W SM
C311
100N PC
0V_SIG
C314
100N SM
VIPROT
OUTPUT
TP303
0V_HF
DZ301
15V 350MW SM
R352
470R 2W MF 5%
1K8 SM
R337
22R SM
TP307
0V_HF
RV300
100R PSET
TR322
FMMT497
C316
470P PPW
C309
100N SM
ADJ BIAS
R325
1K0 SM
PL300
R332
0V_SIG
0V_SIG
+ C302
100U EL 100V
R331
1K5 SM
0V_SIG
IC300A
1
R347
330R SM
TL072CD 0V_SIG
TP302
V TO I AMP
8
INPUT FILTER
R341
BOOTSTRAP
6 R330
1M0 SM
5
7
0V_SIG
R334
22K SM
TP305
IC300B
VI PROTECT
SIGNAL TO MICRO
R305
10K SM
100P SM
470N PE
C310
100N SM
R329
4K7 SM
D301
BAS16W SM
C307
R333
0V_HF
V-I PROTECTION
R323
22R SM
0V_HF
0V_HF
R309
10K SM
TR314
FMMT497
TR315
FMMT497
NPN CURRENT MIRROR
R317
100R SM
B
TR307
FMMT597
TR308
FMMT597
PRE DRIVER
R318
100R SM
R311
10K SM
B
TR317
FMMT497
R320
100R SM
R312
10K SM
VNEG
A
A
DRAWING TITLE
A85 amplifier - power output stage left
23425
A & R Cambridge Ltd.
Pembroke Avenue
Denny Industrial Centre
Waterbeach
Cambridge CB5 9PB
1
2
3
4
5
Circuit Diagram
Notes:
01_1101
JR
00_1134
MGM
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
2.2
00_1115
JR
16/10/00
R338 R339 CHANGED TO 150R
2.1
00_1086
JR
19/9/00
NO CHANGE TO THIS SHEET
2.0
ECO No.
Filename
INITIALS
6
17/11/00
POWER SUPPLY FUSES AND DC OFFSET
3.2
NO CHANGE TO THIS SHEET
2.4
DATE
DESCRIPTION OF CHANGE
Drawn by:
Date Printed
L882C3_3.2.SCH
6/4/01
6-Jun-2001
7
J Reckless
Sheet 3 of 4
DRAWING NO. L882C3
8
ISSUE
1
2
3
4
5
6
7
8
VPOS
D
D
R419
100R SM
R415
100R SM
R400
10K SM
R416
100R SM
PRE DRIVER
PNP CURRENT MIRROR
TR400
FMMT597
TR410
FMMT497
TR401
FMMT597
R401
10K SM
+
C400
100U EL
DZ400
15V 350MW SM
TR409
FMMT497
R421
22R SM
TR402
FMMT597
TR421
FMMT597
OUTPUT STAGE
R438
150R SM
3K3 SM
TR411
FMMT497 C417
TR418
SAP15N
DC SERVO
R428
4K7 SM
C
R424
INPUT
3
1K0 SM
TP404
2
R422
22R SM
TL072CD
R427
22K SM
DZ403
4V7 350MW SM
4
DZ402
4V7 350MW SM
R437
22R SM
+
DZ401
15V 350MW SM
R443
100R SM
D403
1N4003F
TR412
FMMT497
R449
100R SM
R445
0R0 SM
R406
10K SM
TR413
FMMT497
DZ405
4V7 350MW SM
+ C405
10U EL
100R SM
0V_HF
R452
470R 2W MF 5%
R440
100K SM
+ C403
100U EL
1
2
R451
R455
6K8 SM
L400
DC OFFSET SIGNAL
TO MICRO
+ C418
10U EL
+ C404
100U EL
C412
10N SM
C411
100N PC
R426
1K0 SM
+ C406
100U EL 100V
TP406
BOOTSTRAP
3K3 SM
TR419
SAP15P
100P SM
TR420
FMMT497
R444
100R SM
TR405
FMMT597
R446
0R0 SM
R404
10K SM
R448
R442
TR404
FMMT597
D404
1N4003F
100R SM
R439
150R SM
OUTPUT STAGE
R436
22K SM
TR406
FMMT597
DC OFFSET
DETECTION
0V_LS
100N SM
0V_HF
0V_LS
TR416
FMMT497
DZ406
4V7 350MW SM
V-I PROTECTION
C413
R407
10K SM
TP408
D402
BAS16W SM
ZOBEL NETWORK
C419
100N PE
R408
22K SM
R402
10K SM
R410
4K7 SM
R413
10K SM
C420
100U NP
R414
10K SM
C415
100N SM
0V_HF
C401
100U EL
R450
5R6 2W CF
R403
10K SM
330R SM
C408
0V_SIG
2U2H LAC SMALL
DCPROT
R454
1K0 SM
R435
C
10R MF
MEASURE
BIAS
(SET TO 16 mV)
D400
BAS16W SM
470R 2W MF 5%
R453
TR403
FMMT597
C414
100N SM
R425
1K0 SM
PL400
1K8 SM
0V_SIG
0V_HF
VIPROT
OUTPUT
TP403
C409
100N SM
ADJ BIAS
RV400
100R PSET
TR422
FMMT497
C416
470P PPW
TP407
R432
0V_SIG
0V_SIG
+ C402
100U EL 100V
R431
1K5 SM
0V_SIG
IC400A
1
R447
330R SM
TL072CD 0V_SIG
TP402
V TO I AMP
8
INPUT FILTER
R441
BOOTSTRAP
6 R430
1M0 SM
5
7
0V_SIG
R434
22K SM
TP405
IC400B
VI PROTECT
SIGNAL TO MICRO
R405
10K SM
100P SM
470N PE
C410
100N SM
R429
4K7 SM
D401
BAS16W SM
C407
R433
0V_HF
V-I PROTECTION
R423
22R SM
0V_HF
0V_HF
R409
10K SM
TR414
FMMT497
TR415
FMMT497
NPN CURRENT MIRROR
R417
100R SM
B
TR407
FMMT597
TR408
FMMT597
PRE DRIVER
R418
100R SM
R411
10K SM
B
TR417
FMMT497
R420
100R SM
R412
10K SM
VNEG
A
A
DRAWING TITLE
A85 amplifier - power output stage right
23425
A & R Cambridge Ltd.
Pembroke Avenue
Denny Industrial Centre
Waterbeach
Cambridge CB5 9PB
1
2
3
4
5
Circuit Diagram
Notes:
01_1101
JR
00_1134
MGM
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
2.2
00_1115
JR
16/10/00
R438 R439 CHANGED TO 150R
2.1
00_1086
JR
19/9/00
NO CHANGE TO THIS SHEET
2.0
ECO No.
Filename
INITIALS
6
17/11/00
POWER SUPPLY FUSES AND DC OFFSET
3.2
L300 L400 CHANGED TO 7D002C
2.4
DATE
DESCRIPTION OF CHANGE
Drawn by:
Date Printed
L882C4_3.2.SCH
6/4/01
6-Jun-2001
7
J Reckless
Sheet 4 of 4
DRAWING NO. L882C4
8
ISSUE
1
2
3
4
5
6
7
8
DISP1
DISP SSV-07MS09
SW5
STOP
SW6
OPEN
SW7
FWD>>
Q_1
SW8
<<RWD
Q_2
K2 Q_28
R310K SM
Q_3
Q_4
(was MENU)
D
F2
F2
F1
F2
42
43
SW4
PLAY
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
SW3
PAUSE
1
2
SW2
<SKIP
S1
S2
S3
S4
S5
S6
S7
S8
S9
S10
S11
S12
S13
S14
S15
(was POWER)
SW1
SKIP>
G1
G2
G3
G4
G5
G6
G7
K3 Q_27
R210K SM
F1
F1
D
Q_26
K4
5
6
7
8
9
10
11
R110K SM
D1BAS16W SM
D2 BAS16W SM
D3BAS16W SM
D4 BAS16W SM
+5V
+5V
VKK switching CCT
C3
100N SM
VKK_D
4
VKK_CK
470R SM
CD
Q
LED2
LED GREEN3.1MM
HDCD
6
C4
G1
G2
G3
G4
1
R15
1
2
3
4
5
6
7
8
9
10
11
1K0 SM
VKKIN
VKK
C7
100N SM
SO
SI
Q6
BC846B
PCB
C
L886PB_3
Z1
1N0 SM
74HC74 SM
R13
1M0 SM
PCB
HDCDLED
STBLED
4K7 SM
CLK
+5V
Q_29
44
43
42
41
40
39
38
37
36
35
34
3
Q
SD
C
D
Q_18 R5
Q5
BC856B
R14
SW1
SW2
SW3
SW4
SO
SI
VSS
SCK
CS
K1
K2
33
32
31
30
29
28
27
26
25
24
23
G5
G6
S16/G7
S15/G8
S14/G9
S13/G10
VEE
S12/G11
S11
S10
S9
IR RX
SUPPORT PAD
G5
G6
G7
SEG15
SEG14
SEG13
IR RX SUPPORT PAD
DD1
VKK
PCB MATERIAL
FR4, 1 OZ Cu
SEG12
SEG11
SEG10
SEG9
FR4_1OZ
PS
K3
K4
VDD
S1
S2
S3
S4
S5
S6
S7
S8
SCK
CS
SP1
OSC
VSS
L1
L2
L3
L4
VDD
G1
G2
G3
G4
2
Z2A
5
Photo Strip
PHOTO_STRIP
12
13
14
15
16
17
18
19
20
21
22
BU2872AK
+5V
+5V
DUAL FOOTPRINT
1K0 SM
Q3
BC847B
1
Q2
BC847B
LED1
Q_24
R16
Q1
BC856B
R6
R10
10K SM
On=Green
Standby=red
R4
Q_25
11
74HC74 SM
Z2C
C8
100N SM
D
Q
DRILL_DWG
Z2B
9
DD3
A2 Horizontal
Paper Marker
CLK
Q
8
DD_A3H
74HC74 SM
220R SM
7
1K0 SM
12
+5V
SD
Q4
BC847B
CD
10K SM
Drilling
Detail
10
IRIRQ
DD4
13
R11
10K SM
R9
A2 Vertical
Paper Marker
G
+5V
LED RED/GRN 3MM
A
DATA I/O
SK1
1
2
3
4
5
6
7
8
D5
VKK
R8
4K7 SM
BZX284-C5V6
R7
Q_7 SO
Q_23
Q_6 IRIRQ
Q_5 CS
Q_30SCK
Q_8 SI
Q_9
FFC8H SM
1
Pwr in
SK2
+
Test pad change for issue 3:
Q_23= SO (was STBLED)
Q_9=SI (was GND)
C5
10U EL SM
+ C6
33K SM
1
2
3
4
5
6
Q_10 VKKIN
Q_11
Q_12
Q_13
B
DD2
14
GND
GND
100N SM
RX1
2
Update Box
UPDATE_BOX
GND
C1
O/P
O/P
C2
100N SM
10K SM
Case
Case
+5V
+5V
3
R12
VCC
+5V
SBX1610-52/PIC-26043TM2
R
B
EL1
SEG8
SEG7
SEG6
SEG5
SEG4
SEG3
SEG2
SEG1
DD6
LC1
LC2
DD_A3V
VFD CLIP
VFD CLIP
FIX1
FIX2
FIX3
FIX4
E882PM
E882PM
Layout by
FD_1
FD_2
FIXING HOLEFIXING HOLEFIXING HOLEFIXING HOLE E874PM
E874PM
Cliff
DVD DISPLAY CLIPDVD DISPLAY CLIP
CLOGO
Display clips: PCB footprint is called E882PM
FIDUCIAL
FIDUCIAL
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
DRAWING TITLE
10U EL SM
F2
A
DVD DISPLAY PCB
F1
PG
17/11/00
Correct error R4 is 1206 not 0805
3.0a
PG
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
CATHODE BIAS CCT
+5V
Q_14
00_1082
Circuit Diagram
Notes:
A & R Cambridge Ltd.
Pembroke Avenue
CL
31/07/00
Denny Industrial Centre
ECO No. INITIALS
DATE
Waterbeach
Date Printed
Cambridge CB5 9PB Filename
17-Nov-2000
J:\ECO_wip\L886 DV88 Display board correct R4 cock-up\L8863\L8863.0a.ddb - L886_3.0a.sch
AMPCT6H
VKK = -19.5V
F1= -13.9V
F2 = -9.6V
2
3
4
5
6
PRODUCTION RELEASE
1.0
DESCRIPTION OF CHANGE
Drawn by:
PG
7
Sheet 1 of 1
DRAWING NO.
ISSUE
L886_3
8
1
2
3
4
D
D
C
C
Main signal path
L937C2_1.1.SCH
Power supply
L937C3_1.1.SCH
B
B
USE EXCLUDE NF WHEN USING RUNOUT SHEET PROGRAM
DRAWING TITLE
Integrated amplifier preamp
PCB1
A
PCB
L937PB_1
1
23425
Circuit Diagram
Notes:
A
01_E014
JBR
28/11/01
Fuses uprated to 2A
1.1
A & R Cambridge Ltd.
Pembroke Avenue
01_1142
JBR
14/8/01
First production release
1.0
Denny Industrial Centre
ECO No. INITIALS
DATE
DESCRIPTION OF CHANGE
ISSUE
Waterbeach
Drawn by:
Date Printed
Filename
Cambridge CB5 9PB
Sheet 1 of 3
DRAWING NO. L937C1
JBR
28-Nov-2001
J:\Change_Control\ECO_AGENDA\01_E014 Fuse changes on A32 preamp\L937_1.1.ddb - Documents\Schematic\L937C1_1.0.PRJ
2
3
4
-15V
TUNER R
0V_SIG
C122
470P FKP2
AVL1
EMC
1
AVL
R126
MODULE L
C126
100N SM
0V_SIG
+5V
0V_SIG
VCR01
VCR11
VCR21
AV L
1K0 SM
F
AVR1
C121
1N0 SM
VCR 0
VCR 1
VCR 2
0V_SIG
AVR
-15V
AV R
C124
470P FKP2
R130
100K SM
+15V
D108
BAV99W DUAL SM
D112
BAV99W DUAL SM
4
5
6
7
12
11
10
9
MODULE R
C127
100N SM 0V_SIG
-15V
C128
100N SM
0V_SIG
DVDL
R156
DVD INPUT
0V_SIG
DVD L
DVDR1
C140
470P FKP2
AUX L
CD L
TUNER L
AV L
DVD L
TAPE IN L
VCR IN L
MODULE L
0V_SIG
0V_SIG
PHONO4G
DVDR
R157
DVD R
1K0 SM
+15V
+15V
-15V
B
R160
100K SM
C141
470P FKP2
D113
BAV99W DUAL SM
+15V
D114
BAV99W DUAL SM
TAPE INPUT
1
EMC
TAPEIL
R158
X0
X1
X2
X3
X4
X5
X6
X7
V+
D
+15V
Z110B
TL072 SM
13
5
8
R161
100K SM
N
TAPEIR1
C142
470P FKP2
-15V
1K0 SM
+15V
C146
100N SM
0V_SIG
TAPEIR
TAPE IN R
R189
-15V
R192
100K SM
6
A
1K0 SM
F
R193
100K SM
N
C160
1N0 SM
VCRIR1
X0
X1
X2
X3
X4
X5
X6
X7
V+
D
13
C162
470P FKP2
3
R175
22K SM
R167
22K SM
R176
22K SM
R168
22K SM
R177
22K SM
R169
22K SM
AUXIR1
1
Z115A
C147
100N PE
C149
0V_SIG
VCR IN R
0V_SIG
1K0 SM
+15V
V+
D
R194
100K SM
C163
470P FKP2
+15V
AUXL
D117
BAV99W DUAL SM
1
-15V
1
2
3
4
C152
100N SM
5
6
Z116_1A
7
0V_SIG
TONE*
8
OPA2134PA SM
AUX L
0V_SIG
AUXR
R199
SEL2
D1
D2
S1
S2
V-
V+
GND
VL
S4
S3
D4
D3
SEL4
SEL3
16
TONE*
+
15
20
VCC
GND
DS1844
19
18
15
14
+15V
Z116B
C167
100N PE
+5V
5
C153
100N SM
12
11
0V_SIG
Z107_13
AUX R
+15V2
C168
100N SM
Z109C
AUXL1 TL072 SM
AUX L
-15V1
-15V2
-15V
C172
100N SM
9
TONE*
0V_SIG
+15V
C176
100N SM
Z110C
TL072 SM
0V_SIG
C169
100N SM
TAPE IN R
VCR IN L
VCR IN R
0V_SIG
LFO
3
C158
22P SM
2
2
LMO
14
RFO
LIN
LGND
Z117A
R186
1
SK102
1
2
3
4
SK102_1
47R SM
OPA2134PA SM
0V_SIG
R182
100R SM
RIN
RMO
15
5
R188
0V_SIG
10K SM
FFC30V SM
0V_MODULE
AMPCT4
TO POWER AMP I/P
Z117B
R187
7
RLY100A
RLY100B
47R SM
RLY DPDT 5V SM
OPA2134PA SM
0V_SIG
Z107
VSDVC
RLY DPDT 5V SM
0V_SIG
+5V
C180
100N SM
Z111C
TL072 SM
0V_SIG
C173
100N SM
0V_SLOAD
0V_SCLK
2R2 SM
R201
R181
10K SM
C177
100N SM
D120
BAS16W SM
+ RLY100C
RLY DPDT 5V SM
-
2R2 SM
R202
+5V
2R2 SM
C186
Q100
BC849B
100N SM
0V_SIG
Z112C
TL072 SM
0V_SIG
+ C187
10U EL
R203
MUTE*
4K7 SM
0V_SIG
C181
100N SM
0V_D
A
+15V
C165
0V_SIG
470P FKP2
AUX R
-15V
C170
100N SM
Z113C
TL072 SM
C166
470P FKP2
C174
100N SM
Z114C
TL072 SM
0V_SIG
C171
100N SM
0V_SIG
C175
100N SM
C178
100N SM
Z115C
0V_SIG
C179
100N SM
C182
100N SM
Z116C
0V_SIG
C184
100N SM
4
DRAWING TITLE
Integrated amplifier preamp - main signal path
Z117C
0V_SIG
C183
100N SM
C185
100N SM
-15V
3
B
SK102_3
6
RGND
MODULE L
MODULE R
SK101
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
R200
+15V
AUXR1
13
1M0 SM
5
TAPE IN L
-15V
0V_SIG
12
0V_SIG
+15V1
Z107_1
DVD R
-15V
D121
BAV99W DUAL SM
C159
22P SM
10
0V_SDATA
SK103
1
2
3
4
5
6
7
8
4
13
OPA2134PA SM
0V_SIG
C156
100N SM
3
Z107_4
R184
6
7
100K SM
0V_HF
R198
100K SM
SEL1
/TONE
DG413DY
470N PE
0V_SIG
2
1
-15V
+ C189
10U EL 0V_SIG
D119
BAV99W DUAL SM
0V_SIG
TONE*
C151
AMPCT8
-15V
5
0V_SIG
Z116A
22R SM
C155
100N SM
+15V
+ C191
10U EL 0V_SIG
+ C157
100U EL
D122
BAV99W DUAL SM
0V_SIG
Z106
1M0 SM
+ C188
10U EL
2
C154
10U EL
R185
R183
OPA2134PA SM
+15V
22K SM
8
Z115B
100K SM
R179
13
3
1K0 SM
-15V
AUX L
+ C190
10U EL
+5V
+
6
7
22P SM
X0
X1
X2
X3
X4
X5
X6
X7
C
FFC22V1MM
DVD L
Z115_1A
DG408DY
-15V
R196
SCLK
0V_SCLK
AV R
R180
0V_SIG
PHONO2G
R141
2K7 SM
AUX R
8
VCRIR
R191
SLOAD
0V_SLOAD
+15V
4
0V_SIG
PHONO4G
SDATA
0V_SDATA
0V_SIG
470N PE
+15V
R197
100K SM
C164
1N0 SM
TONEID
470N PE
OPA2134PA SM
2
EN
1
A0
16
A1
15
A2
LISTEN 0
LISTEN 1
LISTEN 2
R195
470N PE
C193
C150
Z105
4
5
6
7
12
11
10
9
1K0 SM
F
N
0V_SIG
AUXIL1
0V_D
TUNER R
2
8
DG408DY
R174
22K SM
R166
22K SM
-15V
D110
BAV99W DUAL SM
22K SM
2
EN
1
A0
16
A1
15
A2
TO PHONO PCB
1
AUX INPUT
0V_SIG
Z113B
TL072 SM
R178
Z104
4
5
6
7
12
11
10
9
LISTEN 0
LISTEN 1
LISTEN 2
D118
BAV99W DUAL SM
SK6
VCR IN L
MUTE*
+ C137
10U CERAFINE
R142
5K6 SM
AV L
-15V
VCRIL
R140
2K7 SM
22P SM
0V_SIG
R190
R146
22K SM
TONE*
6
47R SM
+15V
14
GND
3
V-
EMC
SK5A VCRIL1
1
EMC
VCR INPUT
R155
22K SM
TUNER L
14
GND
3
V-
+15V
R154
22K SM
R150
22K SM
C148
C161
470P FKP2
-15V
R153
22K SM
R149
22K SM
CD R
0V_SIG
+15V
R148
22K SM
CD L
R173
22K SM
R165
22K SM
D115
BAV99W DUAL SM
D116
BAV99W DUAL SM
R152
22K SM
0V_SIG
R172
22K SM
R164
22K SM
LISTEN0
LISTEN1
LISTEN2
R145
22K SM
C135
CFKP2 63V 2N2
SK100
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
R151
22K SM
R147
22K SM
C130
100P SM
+5V
0V_SIG
PHONO4G
C145
100N SM
0V_SIG
10U CERAFINE
R144
22K SM
7
R134
7
R132
1M0 SM
0V_SIG
+15V
6
C136
22P SM
R143
C134
470N PE
5
LISTEN 0
LISTEN 1
LISTEN 2
VCR 0
VCR 1
VCR 2
TAPE 0
TAPE 1
TAPE 2
Z106_11
0V_TONEID
C144
100N SM
TAPE IN L
Z108C
4
C138
Z114_7
0V_SIG
R171
22K SM
R163
22K SM
AUX R
CD R
TUNER R
AV R
DVD R
TAPE IN R
VCR IN R
MODULE R
Z108_3
7
C133
R170
22K SM
-15V
-15V
1K0 SM
C139
1N0 SM
0V_SIG
TAPEIL1
F
Z113_7
VCR02
-15V
SK4A
Z116_1B
PHONO4G
DG408DY
R162
22K SM
LIST0
LIST1
LIST2
Z108B
7
5
22K SM
N
+5V
C143
100N SM
0V_SIG
0V_SIG
0V_SIG
0V_SIG
-15V
R159
100K SM
F
0V_SIG
14
GND
3
V-
1K0 SM
F
47R SM
+ C132
10U CERAFINE
Z114_1
2
C129
100P SM
2
EN
1
A0
16
A1
15
A2
VCR 0
VCR 1
VCR 2
VCR0
VCR1
VCR2
-15V
DVDL1
2
+15V
+5V
0V_SIG
VCR OUTPUT
VCRO1 SK5B
R133
1
R131
1M0 SM
Z103
AUX R
CD R
TUNER R
AV R
DVD R
TAPE IN R
1K0 SM
+15V
3
8
3
1
22K SM
R138
22K SM
Z114B
TL072 SM
DG408DY
0V_SIG
N
D
Z110A
TL072 SM
13
-15V
R127
SK3B
V+
2
R136
C131
100U EL 2K2 SM
14
GND
3
V-
0V_SIG
PHONO4G
+15V
X0
X1
X2
X3
X4
X5
X6
X7
2
EN
1
A0
16
A1
15
A2
C123
470P FKP2
R129
100K SM
N
0V_SIG
-15V
-15V
SK3A
AV INPUT
C125
100N SM
4
5
6
7
12
11
10
9
+
7
C
AUX L
CD L
TUNER L
AV L
DVD L
TAPE IN L
1
22K SM
-15V
D109
BAV99W DUAL SM
DVCC
+15V
+15V
Z114A
TL072 SM
0V_SIG
Z114_3
Z113_1 R139
11
0V_SIG
+15V
Z102
+15V
D106
BAV99W DUAL SM
D107
BAV99W DUAL SM
DG408DY
2R2 SM
0V_SCLK
3
8
R128
100K SM
0V_SIG
R123
0V_SIG
D111
BAV99W DUAL SM
Z113A
TL072 SM
Z113_3
R137
-15V
-15V
+5V
AGND
1K0 SM
+15V
R135
2K2 SM
4
TUNR
R125
2R2 SM
0V_SDATA
470N PE
14
GND
3
V-
0V_SIG
PHONO4G
R116
2K7 SM
+5V
16
0V_SIG
C119
10N SM
0V_TONEID
R124
470N PE
C192
8
TUNR1
TAPE 0
TAPE 1
TAPE 2
R204
10K SM
2R2 SM
0V_SIG
0V_SIG
D
1
PS
8
R/W
11
DOUT
R122
C112
C109
100P SM
2
EN
1
A0
16
A1
15
A2
IC DS1844
+ C116
10U CERAFINE
R117
5K6 SM
47R SM
4
N
TAPE0
TAPE1
TAPE2
6
Z115_1B
XMUTE
C103
470P FKP2
R105
100K SM
R107
1M0 SM
R121
22K SM
SCLK 13
CLK
SDATA 12
DIN
TONEID 9
RST
+ C120
10U EL
TO MICRO / DISPLAY PCB
0V_SIG
7
R115
2K7 SM
Z111B
TL072 SM
R109
R120
22K SM
C114
CFKP2 63V 2N2
SCLK
SDATA
TONEID
C118
100N SM
Z108E
TO PLUG IN MODULE PCB
+5V
5
8
10U CERAFINE
R119
22K SM
+
VCR IN R
MODULE R
0V_SIG
-15V
TUNER L
1K0 SM
13
8
TUNL
R102
D
4
TUNL1
F
V+
6
OPA2134PA SM
SK2B
TUNER INPUT
X0
X1
X2
X3
X4
X5
X6
X7
+5V
Z106_14
7
8
C107
100N SM
4
5
6
7
12
11
10
9
C117
Z112_7
C115
5
AUX R
CD R
TUNER R
AV R
DVD R
C106
100N SM
-15V
D104
BAV99W DUAL SM
8
D102
BAV99W DUAL SM
Z109B
TL072 SM
7
6
22P SM
R118
C113
470N PE
5
Z111_7
-15V
4
+15V
Z101
2
Z108A
14
DS1844
0V_SIG
+15V
5
10
+15V
Z108_19
Z112B
TL072 SM
Z112_1
1
22K SM
DG408DY
-15V
Z108D
17
1
+15V
C111
10U CERAFINE
0V_SIG
TAPE02
14
GND
3
V0V_SIG
+
PHONO4G
OPA2134PA SM
D101
BAV99W DUAL SM
R113
22K SM
3
3
C102
470P FKP2
R104
100K SM
22K SM
0V_SIG
8
-15V
2
Z112A
TL072 SM
Z112_3
R114
AVCC
1K0 SM
+15V
0V_SIG
Z111_1
1
+ C110
R111
100U EL 2K2 SM
N
0V_SIG
3
22K SM
C108
100P SM
2
EN
1
A0
16
A1
15
A2
TAPE 0
TAPE 1
TAPE 2
TAP0
TAP1
TAP2
Z111A
TL072 SM
Z111_3
R112
F
4
D
-15V
CD R
TAPE OUTPUT
OPA2134PA SM
CDR
R101
TAPEO1
47R SM
DS1844
0V_SIG
PHONO4G
0V_SIG
2
2
+5V
R108
1
R106
1M0 SM
R110
2K2 SM
SK4B
3
8
DGND
C105
100N SM 0V_SIG
0V_SIG
CDR1
D
Z109A
TL072 SM
13
8
N
VCR IN L
MODULE L
V+
6
XCS
9
DATA
10
CCLK
C101
470P FKP2
R103
100K SM
C100
1N0 SM
C104
100N SM
X0
X1
X2
X3
X4
X5
X6
X7
8
D105
BAV99W DUAL SM
SLOAD
SDATA
SCLK
1K0 SM
F
EMC
CD L
4
R100
4
5
6
7
12
11
10
9
8
1
AUX L
CD L
TUNER L
AV L
DVD L
+15V
4
CD INPUT
CDL
7
-15V
D103
BAV99W DUAL SM
DS1844
+15V
Z100
CDL1
6
+5V
+15V
SK2A
5
8
D100
BAV99W DUAL SM
4
4
+15V
3
16
2
6
1
5
23425
Circuit Diagram
Notes:
01_E014
JBR
28/11/01
Fuses uprated to 2A
1.1
A & R Cambridge Ltd.
Pembroke Avenue
01_1142
JBR
14/8/01
First production release
1.0
Denny Industrial Centre
ECO No. INITIALS
DATE
DESCRIPTION OF CHANGE
ISSUE
Waterbeach
Drawn by:
Filename
Date Printed
Cambridge CB5 9PB
Sheet 2 of 3
DRAWING NO. L937C2
28-Nov-2001
JBR
J:\Change_Control\ECO_AGENDA\01_E014 Fuse changes on A32 preamp\L937_1.1.ddb - Documents\Schematic\L937C2_1.0.SCH
6
7
8
1
2
3
4
D302
D304
BAS16W SM
Q305
2SA1964
I
SK300
MOLEXPWR4
3
4
Q306
BC846B
UR+
D300
S1D
F300
D301
S1D
+ C300
1000u 35V
AC1
Q300
J112
R300
330R SM
+
D310+
1
2
C308
100N SM
C303
3300u 25V
D310
15V 350MW SM
C314
1N0 PP
C
F301
AC2
C309
100N SM
Vout
C315
1N0 PP
D
D305
BAS16W SM
+ C312
220U EL
R302
1K2 SM
D307
S1D
+ C310
1000u 35V
D311
15V 350MW SM
C305
10U EL
+15V SK301
1
2
3
-15V
4
0V_PSU
IDC4S
0V_PSU
0V_MODULE
SP300
STAR POINT 4
0V_PSU
Q307
BC856B
0V_SIG
-15V3
0V_HF
0V_MODULE
-15V
Q301
2SC5248
D308
B
C
D311-
R304
330R SM
UR-
+ C306
470U EL 25V
+
+ C313
3300u 25V
Q303
J112
R303
470R SM
R307
220R SM
+ C302
220U EL
T2A SM
D306
S1D
+5V
+3.75V
C304
100N SM
T2A SM
C307
470N PE
Vin
ADJ
+15V3
+5V
O
A
D
Z301 BAS16W SM
LM317T
+15V
0V_SIG
B
BAS16W SM
DRAWING TITLE
Integrated amplifier preamp - power supply
23425
A
Circuit Diagram
Notes:
A
01_E014
JBR
28/11/01
Fuses uprated to 2A
1.1
A & R Cambridge Ltd.
Pembroke Avenue
01_1142
JBR
14/8/01
First production release
1.0
Denny Industrial Centre
ECO No. INITIALS
DATE
DESCRIPTION OF CHANGE
ISSUE
Waterbeach
Drawn by:
Date Printed
Filename
Cambridge CB5 9PB
Sheet 3 of 3
DRAWING NO. L937C3
JBR
28-Nov-2001
J:\Change_Control\ECO_AGENDA\01_E014 Fuse changes on A32 preamp\L937_1.1.ddb - Documents\Schematic\L937C3_1.0.SCH
1
2
3
4
1
2
3
4
5
6
7
8
A85 DISPLAY PCB
D
D
L865C2_2.0
L865C2_2.0.SCH
UDB
Update Box
(Small)
UPDATE_SML
MICRO
FD_1
FD_2
FIDUCIAL
FIDUCIAL
FIX7
FIX2
FIX10
FIX4
FIX5
FIX6
FIXING HOLE FIXING HOLE FIXING HOLE FIXING HOLE FIXING HOLE FIXING HOLE
C
C
CHASSIS 1
(BY SK3)
C39
1N0 SM
C40
1N0 SM
0V_D
0V_D
C41
1N0 SM
0V_D
C42
1N0 SM
0V_D
C43
1N0 SM
0V_D
C44
1N0 SM
0V_D
FIX9
FIX3
FIX1
FIX8
FIXING HOLE FIXING HOLE FIXING HOLE FIXING HOLE
FIX11
FIXING HOLE
C45
1N0 SM
CHASSIS 2
(BY SK1)
C46
1N0 SM
0V_D
0V_D
C47
1N0 SM
0V_D
C48
1N0 SM
CHASSIS 3
(BY SK2)
0V_D
C49
1N0 SM
0V_D
PCB1
PCB
B
B
L865PB_2
DRAWING TITLE
A
A
MARY AMP DISPLAY PCB
23425
Circuit Diagram
Notes:
EDD
19/07/2001
IR DUAL FOOTPRINT ADDED
2.0
A & R Cambridge Ltd.
ISSUE 1.1
Pembroke Avenue
00_1103
JBR 29 SEP 2000 SW1 TO SW10 CHANGED
1.1
Denny Industrial Centre
ECO No. INITIALS
DATE
DESCRIPTION OF CHANGE
ISSUE
Waterbeach
Drawn by:
Date Printed
Filename
Cambridge CB5 9PB
Sheet 1 of 2
DRAWING NO. L865C1
JBR
8-Jan-2002
J:\Completed_Projects\A85 (Mary)\mary display\L865_2\l865_2.0 dbase.ddb - Documents\L865_2.0.PRJ
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
+5V
Q2
BC847B
Q1
BC847B
R29
10K SM
R2
10K SM
R3
10K SM
R4
10K SM
SW8
A1509
TACTSW SM
SW12
SW11
R5
10K SM
SW7
A1509
R6
10K SM
R7
10K SM
R68
10K SM
R9
10K SM
TACTSW SM
TACTSW SM
R8
10K SM
TACTSW SM
A1506
TACTSW SM
SW13
SW14
SW15
SW17
SW16
R10
10K SM
SW1
A1509
R11
10K SM
SW4
A1509
R12
10K SM
SW2
A1509
R13
10K SM
SW5
A1509
R14
10K SM
SW3
A1509
R15
10K SM
SW10
A1509
R16
10K SM
SW9
A1509
R17
1K5 SM
R18
1K5 SM
LED7
LED8
R19
1K5 SM
R20
1K5 SM
LED6
LED3
R21
1K5 SM
R22
1K5 SM
R25
1K5 SM
R24
1K5 SM
R23
1K5 SM
R31
1K5 SM
LED9
LED1
LED4
LED2
LED5
LED10
2V7
LED GREEN3.1MM
LED GREEN3.1MM
F1 to F2 = 4Vac 150mA
VDD2 = 40Vdc 20mA
SAMBUSY
2
SAMRX2
R43
100K SM
7
0V_D
5
LM393A SM
R41
100K SM
0V_D
0R0 SM R48
O/P
O/P
R49
10K SM
2
R42
100K SM
RX1
SBX1610-52/PIC-26043TM2
R44
100K SM
C9
0V_D
100N SM
+5V
3
1
R52
F1CLOCK
R56
10K SM
2
VPROG
PB0
+5V
7
R53
F2CLOCK
6
1
3
5
7
9
11
13
R59
C
0R0 SM
100R SM
R57
10K SM
Z11B
AD8532 SM
3
0V_D
5
4
VIPROT
DCPROT
ACPRESENT
SEL8
SEL9
MUTE
TONE
IRIN
PHASEB
PHASEA
F1CLOCK
F2CLOCK
RECEIVE
C
0V_D
0R0 SM
5
PHASEA
PHASEB
R58
100R SM
100N SM
2
4
6
8
10
12
14
0V_D
DISPLAY CRADLE E916PM
Z11A
AD8532 SM
+5V
SW18
ALPS_ENCODER
1
A
2
B
Programming adaptor
SK4
B1013
DISPLAY CRADLE
0V_D
0V_D
C
+5V
R75
10K SM
C6
1
1
VFD_VDD2
DISPLAY CRADLE E916PM
DC2
E916PM
2
3
10K SM
+5V
Q_54
LM393A SM
+5V
Z7A
LM393A SM
+5V
E916PM
3
+
3
DC1
Q3
BC847B
R76
IROUT
6
1
Graphics Display
DISPLAY CRADLE
0V5
+5V
+5V
RECEIVE
Q4
BC847B
R46
1K2 SM
LM393A SM
R45
10K SM Z8B
2
+5V
IRIN IRIN
10K SM R27
+5V
0V5
R73
10K SM
1
10K SM R28
SAMDATA
R38
1K2 SM
LM393A SM
10U EL SM
0V_D
3
2V7
6
R37
10K SM Z6A
R74
10K SM
R47
4K7 SM
SIN
VDD1
SOUT
LAT
BLK
CLK
VSS
VSS
VDD2
Z8A
SAMTX2
7
+5V
+5V
4
5
6
7
8
9
10
11
12
2K2 SM
DISPDAT
10K SM
DISP1
1
F1
2
F1
3
F1
10K SM
5
2V7
LEFTAUDIO
R39
GND
GND
SAMHOLD
10K SM
R36
R40
4K7 SM
Z6B
R50
TRANSMIT
R35
Case
Case
G
R
+5V
LM393A SM
0V_D
C11
SP1
DOUBLE SIDED
STICKY PAD
10 X 15MM
STICKY PAD DS 10X15MM
SP2
DOUBLE SIDED
STICKY PAD
10 X 15MM
STICKY PAD DS 10X15MM
+5V
0V_D
IND10
0V5
7
6
LED GREEN3.1MM
LED GREEN3.1MM
5
LED RED/GRN 3MM
IND9
IND8
IND7
IND6
IND5
LED GREEN3.1MM
LED GREEN3.1MM
D
15
F2
16
F2
17
F2
+5V
LED GREEN3.1MM
LED GREEN3.1MM
DISPLAT
DISPBLK
DISPCLK
Z7B
IND4
LED GREEN3.1MM
LED GREEN3.1MM
LED11
IND3
IND2
IND1
BUT16
BUT15
BUT14
BUT13
BUT12
BUT11
BUT10
BUT9
BUT17
BUT8
BUT7
BUT6
BUT5
BUT4
0V_D
BUT3
R34
150R SM
BUT1
R33
330R SM
BUT2
R30
10K SM
IND11
IND12
D
R1
10K SM
SW6
A1509
TRANSMIT
RESPIN
0V_D
SAMHOLD
HEADER 7X2HORIZ
+
C14
10U EL SM
C3
+5V
100N SM
SK2
1
2
3
4
5
0V_D
+5V
C2
SAMTX2
SAMRX2
BUT17
VDD
A
BUT4
IND2
BUT5
IND1
BUT1
BUT3
IND7
BUT10
IND5
BUT15
IND6
BUT16
IND11
IND12
IND10
BUT13
IND8
BUT11
IND4
BUT14
IND9
BUT12
C51B
C51D
C52B
C52D
8
C53B
C8
100N SM
C53D
C54D
0V_D
C55B
C55D
C62D
(FIT CLOSE TO SK1)
100PX4 SM
100PX4 SM
100PX4 SM
100PX4 SM
STANDBY Q_122
Q_123
SP1ON
Q_124
SP2ON
Q_125
THERMPROT
VIPROT Q_126
DCPROT Q_127
Q_128
ACPRESENT
B
Q_129
IRIN
FFC 14W 2.54MM HOR
0V_D
DS1233 SM
100N SM
0V_D
0V_D
C50A
100PX4 SM
C50C
100PX4 SM
C51A
100PX4 SM
C51C
100PX4 SM
C52A
100PX4 SM
C52C
100PX4 SM
C53A
100PX4 SM
C53C
100PX4 SM
C54A
100PX4 SM
C54C
100PX4 SM
C55A
100PX4 SM
C55C
100PX4 SM
To preamp board
SK3
22
SEL1
21
SEL2
20
SEL3
19
SEL4
18
SEL5
17
SEL6
16
SEL7
15
SEL8
14
SEL9
13
12
LEFTAUDIO
11
MUTE
10
9
TONE
Q_117
8
100PX4 SM
100PX4 SM
100PX4 SM
100PX4 SM
100PX4 SM
100PX4 SM
100PX4 SM
100PX4 SM
7
6
5
4
3
2
1
100PX4 SM
100PX4 SM
100PX4 SM
I
+5V
Vin
O
Vout
+
C26
10U EL SM
+
+
Z6C
10U EL SM LM393A SM
Z7C
C28
C27
100N SM
C10
100N SM
LM393A SM
Z8C
C15
LM393A SM
100N SM
C16
100N SM
Z11C
AD8532 SM
C29
100U EL SM
C25
100N SM
D4
22V 350MW SM
0V_D
TONEID
Q_118
SDATA
Q_119
A
0V_D
SLOAD
Q_120
DRAWING TITLE
SCLK
MARY AMP DISPLAY PCB
FFC 22W 1MM HOR
4
VFD_VDD2
Z12
7815
100PX4 SM
0V_D
D5
BAS16W SM
+SUP
23425
0V_D
3
C61D
220U EL
0V_D
4
Gnd
1
Gnd
C7
CHASSIS 1
2
C34
100PX4 SM
H8/3048F
C54B
1
+
100PX4 SM
CHASSIS 2
0V_D
7
VSS
3
A2
2
A1
1
A0
4
Z2
3
Vcc
2
Res
+5V
BUT9
BUT8
BUT7
BUT6
BUT2
IND3
WP
5
SDA
6
SCL
Z5
24C02 SM
220U EL
C62B
100N SM
C50D
0V_D
C33
C4
C5
100N SM
+
C12
100N SM
C50B
10K SM
100PX4 SM
C61B
18P SM
0V_D
R32
100PX4 SM
C63D
+5V
RESPIN
R51
100R SM
+5V
C63C
C60D
0V_D
+SUP
Q_121
8
0V_D
X1
16MHZ SM
100PX4 SM
4
10P SM
C63B
C60A
100PX4 SM
C60C
100PX4 SM
C61A
100PX4 SM
C61C
100PX4 SM
C62A
100PX4 SM
C62C
100PX4 SM
C63A
100PX4 SM
C60B
8
C32
10P SM
D7/P4.7
D8/P3.0
D9/P3.1
D10/P3.2
D11/P3.3
D12/P3.4
D13/P3.5
D14/P3.6
D15/P3.7
Vcc
A0/P1.0
A1/P1.1
A2/P1.2
A3/P1.3
A4/P1.4
A5/P1.5
A6/P1.6
A7/P1.7
Vss
A8/P2.0
A9/P2.1
A10/P2.2
A11/P2.3
A12/P2.4
A13/P2.5
C31
18P SM
4
SLOAD
SCLK
C1
8
TONEID
SDATA
100R SM
+5V
To power amp / PSU
SK1
14
13
12
11
10
9
8
7
6
5
4
3
2
1
4
100R SM
STANDBY
SP1ON
SP2ON
THERMPROT
8
R67
AMPCT5
0V_D
10K SM
4
R66
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
DISPBLK
DISPLAT
100R SM
+5V
D2
BAS16W SM
GND
RECEIVE
R65
DISPCLK
H8/3048F
R26
2R2 SM
TRANSMIT
100R SM
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
2R2 SM
R69
R64
DISPDAT
MD2
MD1
MD0
P6.6/LWR
P6.5/HWR
P6.4/RD
P6.3/AS
Vcc
XTAL
EXTAL
Vss
NM1
RES
STBY
CLKOUT
P6.2/BACK
P6.1/BREQ
P6.0/WAIT
Vss
P5.3/A19
P5.2/A18
P5.1/A17
P5.0/A16
P2.7/A15
P2.6/A14
2R2 SM
R70
D3
BAS16W SM
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
+5V
DS1233
PB0
SEL7
SEL6
SEL5
SEL4
SEL3
SEL2
SEL1
VPROG
R55
10K SM
B
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
Z1
R72
0V_D
SAMDATA
Q_19
SAMBUSY
Q_20
0V_D
2R2 SM
R71
C17
100N SM
+5V
PA7
PA6
PA5
PA4
PA3
PA2
PA1
PA0
Vss
P8.4/CS0
P8.3/IRQ3
P8.2/IRQ2
P8.1/IRQ1
P8.0/IRQ0
AVss
P7.7/AN7/DA1
P7.6/AN6/DA0
P7.5/AN5
P7.4/AN4
P7.3/AN3
P7.2/AN2
P7.1/AN1
P7.0/AN0
Vref
AVcc
100
99
98
97
96
95
94
93
92
91
90
89
88
87
86
85
84
83
82
81
80
79
78
77
76
+5V
G
0V_D
5
Circuit Diagram
Notes:
EDD
19/07/2001
IR DUAL FOOTPRINT ADDED
2.0
A & R Cambridge Ltd.
ISSUE 1.1
Pembroke Avenue
00_1103
JBR 29 SEP 2000 SW1 TO SW10 CHANGED
Denny Industrial Centre
ECO No. INITIALS
DATE
DESCRIPTION OF CHANGE
ISSUE
Waterbeach
Drawn by:
Date Printed
Filename
Cambridge CB5 9PB
Sheet 2 of 2
DRAWING NO. L865C2
JBR
8-Jan-2002
J:\Completed_Projects\A85 (Mary)\mary display\L865_2\l865_2.0 dbase.ddb - Documents\L865C2_2.0.SCH
6
7
8
1
2
3
4
5
6
8
7
D
D
C
C
Q_1
SK1
PHONO2HG
LEFT CHANNEL
L870C2_2.0.SCH
LEFT IN
+15V
Q_3
LEFT OUT
EMC
C1
100N CD
SK2
Q_5
1
0V_SIG
Q_2
RIGHT CHANNEL
L870C3_2.0.SCH
RIGHT IN
Q_4
Q_6
RIGHT OUT
0V_SIG
1
2
3
4
5
6
7
8
AMPCT8
Q_7
-15V
0V_SIG
Q_8
0V_HF
B
A
B
PCB1
DRAWING TITLE
EL1
PCB
L870PB_2
A
A85 PHONO STAGE - TOP LEVEL
Update Box
23425
UPDATE_BOX
Circuit Diagram
Notes:
01_1070
JAG
17/4/01
A & R Cambridge Ltd.
Pembroke Avenue
00_1051
JAG
22/3/01
Denny Industrial Centre
ECO No. INITIALS
DATE
Waterbeach
Date Printed
Filename
Cambridge CB5 9PB
G:\DATA\ECO\ECO AGENDA\01_1070 l870 A85 PHONO ISSUE2\L870_2.0.ddb - L870c1_2.0.PRJ 23-Apr-2001
1
2
3
4
5
6
updated pcb and scm
2
PRODUCTION ISSUE
1
DESCRIPTION OF CHANGE
Drawn by:
Sheet 1 of 3
JBR
7
ISSUE
DRAWING NO. L870C1
8
1
2
3
4
5
6
8
+15V
Q_102
+
7
C102
100U SILMIC
C104
100N PE
C119
D
R100
330R MF
0V_HF
R101
100R MF
100P PP
D
0V_SIG
R102
100R MF
C101
TR100
BC556B
TR102
BC556B
1N0 PP
TR103
BC556B
C110
TR101
BC556B
+ C100
22U EL
4N7 PP
C120
1N0 PP
C112
R109
12K MF
TR108
BC546B
10N PP AX
C111
R115
R110
12K MF
15K MF
10N PP AX
LEFT IN
C105
100N PE
7
TR107
2SA1085
R111
Q_101
1U0 PE
R108
47K MF
10
C109
100P PPW
11
SW100D
4PCO
R105
100R MF
0V_SIG
R119
22R MF
R117
C118
6
R122
39K MF
2M2 MF
10U NP
4
TL071CD
R113
100K MF
TR104
BC556B
0V_SIG
TR105
BC556B
12
R124
5K6 MF
IC100
3
2
56K MF
C
C113
LEFT OUT
2M2 MF
TR106
2SA1085
C108
470P PPW
C106
100N PE
R116
4
5
6
D100
1N4148
100K MF
C115
1N3 PP
R104
100R MF
R118
22R MF
R112
SW100B
4PCO
C
TR109
BC546B
R114
R123
10R MF 100K MF
C117
470P PPW
C116
0V_SIG
470P PPW
TR112
BC546B
TR113
BC546B
B
B
TR110
BC546B
TR111
BC546B
TR114
BC546B
D101
1N4148
D102
1N4148
R106
100R MF
R120
22R MF
+
R121
22R MF
0V_HF
C103
100U SILMIC
0V_SIG
C107
100N PE
Q_103
-15V
DRAWING TITLE
A
A
A85 PHONO STAGE - LEFT CHANNEL
23425
1
2
3
4
Circuit Diagram
Notes:
01_1070
JAG
17/4/01
A & R Cambridge Ltd.
Pembroke Avenue
00_1051
JAG
22/3/01
Denny Industrial Centre
ECO No. INITIALS
DATE
Waterbeach
Date Printed
Filename
Cambridge CB5 9PB
23-Apr-2001
G:\DATA\ECO\ECO
AGENDA\01_1070
l870
A85
PHONO
ISSUE2\L870_2.0.ddb
L870C2_2.0.SCH
5
6
updated pcb and scm
2
PRODUCTION ISSUE
1
DESCRIPTION OF CHANGE
Drawn by:
JBR
7
Sheet 2 of 3
DRAWING NO. 8L870C2
ISSUE
1
2
3
4
5
6
8
+15V
Q_202
+
7
C202
100U SILMIC
C204
100N PE
C219
D
R200
330R MF
0V_HF
R201
100R MF
100P PP
D
0V_SIG
R202
100R MF
C201
TR200
BC556B
TR202
BC556B
1N0 PP
C210
TR203
BC556B
TR201
BC556B
4N7 PP
C220
+ C200
22U EL
1N0 PP
C212
R209
12K MF
TR208
BC546B
10N PP AX
C211
R215
R210
12K MF
15K MF
10N PP AX
RIGHT IN
C205
100N PE
2
3
1
7
Q_201
56K MF
1U0 PE
IC200
3
C218
10U NP
R213
100K MF
TR204
BC556B
100P PPW
R205
100R MF
0V_SIG
0V_SIG
TR205
BC556B
9
8
7
C209
470P PPW
R222
39K MF
2M2 MF
2
TL071CD
R219
22R MF
R217
6
4
SW100CR224
4PCO 5K6 MF
C
C213
RIGHT OUT
2M2 MF
TR207
2SA1085
R211
R208
47K MF
C206
100N PE
R216
1N3 PP
TR206
2SA1085
R204
100R MF
D200
1N4148
100K MF
C215
C208
R218
22R MF
R212
SW100A
4PCO
C
TR209
BC546B
R214
R223
10R MF 100K MF
C216
470P PPW
0V_SIG
C217
470P PPW
TR212
BC546B
TR213
BC546B
B
B
TR210
BC546B
TR211
BC546B
TR214
BC546B
D201
1N4148
D202
1N4148
R206
100R MF
R220
22R MF
+
R221
22R MF
0V_HF
C203
100U SILMIC
0V_SIG
C207
100N PE
Q_203
-15V
DRAWING TITLE
A
A
A85 PHONO STAGE - RIGHT CHANNEL
23425
1
2
3
4
Circuit Diagram
Notes:
01_1070
JAG
17/4/01
A & R Cambridge Ltd.
Pembroke Avenue
00_1051
JAG
22/3/01
Denny Industrial Centre
ECO No. INITIALS
DATE
Waterbeach
Date Printed
Filename
Cambridge CB5 9PB
23-Apr-2001
G:\DATA\ECO\ECO
AGENDA\01_1070
l870
A85
PHONO
ISSUE2\L870_2.0.ddb
L870C3_2.0.SCH
5
6
updated pcb and scm
2
PRODUCTION ISSUE
1
DESCRIPTION OF CHANGE
Drawn by:
JBR
7
Sheet 3 of 3
DRAWING NO. 8L870C3
ISSUE
1
2
3
4
5
6
7
8
+5V_D
SK100
1
2
3
4
5
6
7
8
9
10
11
12
13
14
D
14
+5V_D
C100
100N SM
C101
100N SM
+ C102
100U EL
TP103
SPKR1 ON
SPKR2 ON
THERMPROT
VIPROT1
DCPROT1
0V_D
TP104
TP105
TP106
TP107
TP108
D
+5V_D
0V_D
FFC 14W 2.54MM VER
IC100E
PIN 1 TO THE LEFT AS YOU LOOK FROM THE FRONT
11
10
7
2R2 SM
0V_D
SP100
TP116
THERMPROT
0V_LS
R100
1K0 SM
R107
0V_SIG
TH100
PTH90DEG
IC100G
74HC14D
TP102
STAR POINT 8 0V_HF
74HC14D
IC100F
13
0V_PSU
12
74HC14D
0V_D
C
C
IC100A
R101
+49V
1
1K0 SM
RLY101B
RLY SPST SPKR
D100
1N4003F
RLY100B
RLY SPST SPKR
R102
1
R105
N
INPUT
0V_SIG
0V_LS
0V_HF
VPOS
VNEG
+49V
C105
1N0 SM
SPKR2 ON
100R SM
PHONO2G
VIPROT1
8
DCPROT1
74HC14D
IC100D
5
69
C104
10N SM 74HC14D
74HC14D
VIPROT
DCPROT
OUTPUT
TP111
0V_D
RLY101A
TP112
SK102A
RLY100A
TP113
Top+
RLY SPST SPKR
SK102B
Bot+
RLY SPST SPKR
-49V
0V_SIG TP110
R104
220R SM
4
L911C2_1
L911C2_1.1.SCH
F
SPKR1 ON
EMC
R103
220R SM
TP109
100R SM
R106
74HC14D
IC100C
D101
1N4003F
SK101
TR100
BD179
23
C103
10N SM
1K0 SM
TR101
BD179
IC100B
Top-
0V_HF
Bot-
0V_LS
B
B
0V_LS
0V_D
+49V
1
TP100
BR100
BRGBU8D
+ C106
10,000u 63V
2
3
~
~
+ C107
10,000u 63V
L911PB_1
TP101
DRAWING TITLE
TP115
A
PCB
0V_PSU
C109
100N PC
4
4
3
SK103
MOLEXPWR4
PB
C108
100N PC
2
-
1
+
TP114
POWER AMP SUPPLY
A
AP85 third channel - top level
23425
-49V
Circuit Diagram
Notes:
01_1101
JR
4/6/01
A & R Cambridge Ltd.
Pembroke Avenue
01_1018
JR
30/1/01
Denny Industrial Centre
ECO No. INITIALS
DATE
Waterbeach
Date Printed
Cambridge CB5 9PB Filename
4-Jun-2001
J:\ECO_wip\01_1101 A85 RANGE PCB FUSES AND DC OFFSET\L911_1.1.DDB - Documents\L911C1_1.1.PRJ
1
2
3
4
5
6
DC OFFSET CHANGES
1.1
PRODUCTION ISSUE
1.0
DESCRIPTION OF CHANGE
Drawn by:
J Reckless
7
Sheet 1 of 2
DRAWING NO.
ISSUE
L911C1
8
1
2
3
4
5
6
8
7
VPOS
D
D
R319
100R SM
R315
100R SM
R300
10K SM
R316
100R SM
PRE DRIVER
PNP CURRENT MIRROR
TR300
FMMT597
TR310
FMMT497
TR301
FMMT597
R301
10K SM
+
C300
100U EL
DZ300
15V 350MW SM
TR309
FMMT497
R321
22R SM
TR302
FMMT597
TR321
FMMT597
OUTPUT STAGE
R338
150R SM
0V_HF
TR318
SAP15N
3K3 SM
TR311
FMMT497 C317
R328
4K7 SM
C
INPUT
V TO I AMP
R324
3
1K0 SM
DZ302
4V7 350MW SM
2
8
INPUT FILTER
0V_SIG
IC300A
1
TL072CD
DZ303
4V7 350MW SM
R322
22R SM
4
R327
22K SM
R337
22R SM
+
DZ301
15V 350MW SM
R352
470R 2W
TR313
FMMT497
R349
100R SM
R345
0R0 SM
R340
100K SM
+ C303
100U EL
1
2
R351
L300
2U2H LAC SMALL
DC OFFSET SIGNAL
TO MICRO
R355
6K8 SM
DCPROT
+ C318
10U EL
+ C304
100U EL
C312
10N SM
C311
100N PC
R326
1K0 SM
+ C306
100U EL 100V
R354
1K0 SM
TP306
BOOTSTRAP
R344
100R SM
ZOBEL NETWORK
TR305
FMMT597
R346
0R0 SM
R304
10K SM
R348
R342
3K3 SM
C308
TR319
SAP15P
100P SM
0V_SIG
TR320
FMMT497
TR304
FMMT597
D304
1N4003F
100R SM
TR306
FMMT597
C319
100N PE
C313
0V_LS
R308
22K SM
R307
10K SM
TP308
R336
22K SM
D302
BAS16W SM
100N SM
0V_HF
0V_LS
TR316
FMMT497
DZ306
4V7 350MW SM
V-I PROTECTION
R310
4K7 SM
R313
C320
100U NP
10K SM
R314
10K SM
C315
100N SM
0V_HF
C301
100U EL
DC OFFSET
DETECTION
R302
10K SM
R339
150R SM
OUTPUT STAGE
R350
5R6 2W CF
R303
10K SM
330R SM
R335
C
5R6 2W CF
MEASURE
BIAS
D300
BAS16W SM
470R 2W
R353
TR303
FMMT597
C314
100N SM
R343
100R SM
D303
1N4003F
TR312
FMMT497
100R SM
DZ305
4V7 350MW SM
+ C305
10U EL
OUTPUT
0V_SIG
0V_HF
VIPROT
R306
10K SM
0V_HF
1K8 SM
TP303
C309
100N SM
TP307
R332
0V_SIG
0V_SIG
R325
1K0 SM
PL300
TR322
FMMT497
C316
470P PPW
VI PROTECT
SIGNAL TO MICRO
R305
10K SM
ADJ BIAS
RV300
100R PSET
R331
1K5 SM
TP304
R347
330R SM
+ C302
100U EL 100V
TL072CD 0V_SIG
TP302
R341
BOOTSTRAP
6R330
1M0 SM
5
IC300B
0V_SIG
R334
22K SM
TP305
DC SERVO
7
R329
4K7 SM
D301
BAS16W SM
100P SM
470N PE
C310
100N SM
V-I PROTECTION
C307
R333
R323
22R SM
0V_HF
0V_HF
R309
10K SM
TR314
FMMT497
TR315
FMMT497
TR307
FMMT597
TR308
FMMT597
NPN CURRENT MIRROR
R317
100R SM
B
PRE DRIVER
R318
100R SM
R311
10K SM
B
TR317
FMMT497
R320
100R SM
R312
10K SM
VNEG
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
Circuit Diagram
Notes:
01_1101
JR
4/6/01
DC OFFSET CHANGES
01_1018
JR
30/1/01
PRODUCTION ISSUE
ECO No. INITIALS
Filename
L911C2_1.1.SCH
6
DATE
4-Jun-2001
7
1.0
DESCRIPTION OF CHANGE
Drawn by:
Date Printed
1.1
J Reckless
Sheet 2 of 2
ISSUE
DRAWING NO.
8
L911C2
1
2
3
4
5
6
7
8
+5V_D
+5V_D
Q4
BC556B
R13
560R MF
HT48R30 28-DIP-B-0
DCPROT
VIPROT
SP2 LED
PWR GRN
PWR RED
R14
330R MF
LED3
+5V_D
LED1
LED2
PWR GRN
X1
CST4.00
D1
R16
100K MF
1N4148
C1
100N CD
SPKR1 ON
SPKR2 ON
THERMPROT 2
VIPROT 2
DCPROT 2
D
R15
180R MF
PWR RED
PB5
PB6
PB4
PB7
PA3
PA4
PA2
PA5
PA1
PA6
PA0
PA7
PB3
OSC2
PB2
OSC1
PB1
VDD
PB0
RES
VSS
PC5
(TMR)/INT PC4
PC0
PC3
PC1
PC2
28
27
26
25
24
23
22
21
20
19
18
17
16
15
R8
10K MF
Q3
BC556B
G
1
2
3
4
5
6
7
8
9
10
11
12
13
14
+5V_D
+
0V_D
C5
10U EL
SW1
A1503
0V_D
SW2
A1503
SW3
A1506
C
PWR SW
0V_D
SP1 SW
R9
R10
R11
10K MF 10K MF 10K MF
SP2 SW
C
R6
10K MF
Z1
SP2 SW
SP1 SW
SP1 LED
SPKR2 ON
SPKR1 ON
STANDBY
PWR SW
REMOTE
TRIGGER
AC PRESENT
THERMPROT
14
13
12
11
10
9
8
7
6
5
4
3
2
1
R4
10K MF
R12
560R MF
0V_D
SK2
R7
10K MF
Q2
BC556B
R2
10K MF
STANDBY
SPKR1 ON
SPKR2 ON
THERMPROT 1
VIPROT 1
DCPROT 1
AC PRESENT
TRIGGER
REMOTE
R5
10K MF
SP1 LED
D
R3
10K MF
R
14
13
12
11
10
9
8
7
6
5
4
3
2
1
SP2 LED
SK1
Q1
BC556B
R1
10K MF
0V_D
Z2A
+5V_D
THERMPROT 1
1
THERMPROT 2
2
3
THERMPROT
6
VIPROT
74HC32
SPKR1 ON
Z2B
C14
100U EL
Q5
BC546B
R19
470R MF
VIPROT 1
4
VIPROT 2
5
+5V_D
14
+
9
DCPROT 2
10
8
SPKR2 ON
D2
1N4148
C4
100N CD
C6
100U EL
C7
100U EL
C8
100U EL
Z2E
74HC32
11
13
B
74HC32
DCPROT
BY SK1
BY SK2
BY Z1
0V_D
74HC32
Q6
BC546B
R20
C3
100N CD
VDD
DCPROT 1
+
7
B
C2
100N CD
Z2C
0V_D
+
GND
+
R17
10K MF
Z2D
12
74HC32
470R MF
R18
10K MF
FIX1
FIX2
FIX3
FIX4
FIX5
FIXING HOLE FIXING HOLE FIXING HOLE FIXING HOLE FIXING HOLE
0V_D
STANDBY
Q7
BC546B
R21
C9
100N CD
470R MF
TL1
TOOLING
0V_D
C10
100N CD
TL2
TOOLING
C11
100N CD
C12
100N CD
C13
100N CD
0V_D
0V_D
DRAWING TITLE
A
EL1
DD1
Layout by
Cliff
PCB MATERIAL
FR4, 1 OZ Cu
FR4_1OZ
CLOGO
1
PCB
PS
DD2
PCB
Photo Strip
PHOTO_STRIP
2
L910PB_1
EL2
Drilling
Detail
DRILL_DWG
Update Box
DD3
A3 Vertical
Circuit Diagram
Paper Marker
UPDATE_BOX
A
P85 microcontroller and switch
Notes:
DD_A3V
A & R Cambridge Ltd.
CL
28/09/00
Pembroke Avenue
00_1099
Denny Industrial Centre
ECO No. INITIALS
DATE
Waterbeach
Date Printed
Cambridge CB5 9PB Filename
29-Sep-2000
J:\ECO_wip\00_1099 L910PB_1.0\L910AY_1\L910AY_1.ddb - L910CT_1.sch
3
4
5
6
PRODUCTION RELEASE
1.0
DESCRIPTION OF CHANGE
Drawn by:
CG
7
Sheet 1 of 1
ISSUE
DRAWING NO. L910CT
8
PCB Bill of Materials
ARCAM
Document title: A85 POWER AMPLIFIER AND PSU
Document number: L882RS
Issue: 3
Revision: 2
Date: 06/06/01
Created by: JR
ECO number: 01_1101A
Page 1 of 3
(Excluding parts for NF.)
Part
Qty Iss
Description
******** PCB Finish items:
******** (For drawing office use only. Will be
******** kitted from mechanical run-out sheet.)
C12207
2
FUSE 20mm 2A AS
F022
2
INS COVER PCB FUSEHOLDER
******** PCB Build items:
1A000
4
RES SM W4 1% 0R0 1206
1A010
3
RES SM W4 1% 10R 1206
1A022
8
RES SM W4 1% 22R 1206
1A110
24
RES SM W4 1% 100R 1206
1A115
1A122
1A133
1A147
1A210
4
2
4
1
17
RES
RES
RES
RES
RES
1A215
1A218
3
5
RES SM W4 1% 1K5 1206
RES SM W4 1% 1K8 1206
1A233
1A247
4
11
RES SM W4 1% 3K3 1206
RES SM W4 1% 4K7 1206
1A268
1A310
2
33
RES SM W4 1% 6K8 1206
RES SM W4 1% 10K 1206
1A322
8
RES SM W4 1% 22K 1206
1A410
1A510
1C856
1E110
1E133
1H010
1J147
1K515
1T002
4
2
2
2
2
3
4
1
1
RES SM W4 1% 100K 1206
RES SM W4 1% 1M0 1206
RES CF 2W 5R6 5%
RES CF 1W 100R 5%
RES CF 1W 330R 5%
RES MF W4 1% 10R
RES 2W MF 5% 470R
RES W25 5% VR25 1M5
THERMISTOR SIEMENS B59008
SM
SM
SM
SM
SM
W4
W4
W4
W4
W4
1%
1%
1%
1%
1%
150R 1206
220R 1206
330R 1206
470R 1206
1K0 1206
Designators
F200 F201
F200 F201
R345 R346
R217 R220
R321 R322
R421 R422
R101 R102
R317 R318
R343 R344
R349 R415
R418 R419
R444 R447
R338 R339
R107 R108
R341 R342
R226
R200 R201
R204 R205
R227 R324
R354 R424
R454
R230 R331
R219 R224
R432
R333 R335
R212 R213
R216 R310
R410 R428
R355 R455
R208 R209
R218 R222
R301 R302
R305 R306
R311 R312
R400 R401
R404 R405
R409 R411
R414
R308 R327
R408 R427
R228 R229
R330 R430
R350 R450
R105 R106
R103 R104
R100 R351
R352 R353
R231
TH200
R445
R221
R323
R423
R315
R319
R347
R416
R420
R448
R438
R446
R337
R437
R316
R320
R348
R417
R443
R449
R439
R441 R442
R202
R206
R325
R425
R203
R207
R326
R426
R431
R225 R332
R433 R435
R214 R215
R328 R329
R429
R210
R223
R303
R307
R313
R402
R406
R412
R211
R300
R304
R309
R314
R403
R407
R413
R334 R336
R434 R436
R340 R440
R451
R452 R453
PCB Bill of Materials
ARCAM
Document title: A85 POWER AMPLIFIER AND PSU
Document number: L882RS
Issue: 3
Revision: 2
Date: 06/06/01
Created by: JR
2A410
2C110
2C210
2C310
3
4
3
11
CERD 100N 63V 20% RA
MLC 100P 50V NPO 5% SM
MLC 1N0 50V X7R 10% SM
MLC 10N 50V X7R 10% SM
2C410
16
MLC 100N 50V X7R 10% SM
2D147W
2D168
2D422
2H410
2K233
2K410
2K447
2N610
2
1
1
4
4
2
2
7
PPRO W 470P 63V 5% RA
PPRO 680P 5% 63V RA
220NF CLASS X2 CAP 275VRMS
PCRB 100N 100V 10% RA 5mm
SUPPR CAP 3N3 250V
PEST 100N 63V 10%
PEST 470N 63V 10%
ELST 10U 50V
2N622
2N710
1
8
ELST 22U 63V
ELST 100U 25V
2N710B
2N810A
2N833
2N910A
2V710
3AS16W
4
1
1
2
2
8
ELST 100U 100V
ELST 1M0 10V
ELST 3M3 25V
ELST 10m 63V RA 35mm
ELST NON POLAR 100UF 16V
DIODE SS SM BAS16W
3B4003
10
RECTIFIER 1N4003F 1A 200V
3BGBU8D
3CW315V
1
5
BRIDGE RECTIFIER 8A 200V
ZENER 15V OW35 SM SOT23
3CW34V7
9
ZENER 4V7 OW 35 SM SOT23
4A849B
1
4A856B
2
4AFMMT497 24
TRANS LF SS N SM BC849B
TRANS LF SS P SM BC856B
TRANS LF SS N SM FMMT497
4AFMMT597 21
TRANS LF SS P SM FMMT597
4B179
4CSAP15N
4CSAP15P
5B072D
NPN TRANS MP BD179
TRANS POWER NPN SAP15N
TRANS POWER PNP SAP15P
IC AUDIO SM DUAL TL072
3
2
2
2
ECO number: 01_1101A
Page 2 of 3
C224 C225 C226
C307 C308 C407 C408
C100 C231 C235
C213 C214 C215 C216
C217 C218 C219 C221
C230 C312 C412
C201 C202 C203 C204
C220 C232 C309 C310
C313 C314 C315 C409
C410 C413 C414 C415
C316 C416
C200
C234
C211 C212 C311 C411
C205 C206 C207 C208
C319 C419
C317 C417
C222 C223 C233 C305
C318 C405 C418
C229
C300 C301 C303 C304
C400 C401 C403 C404
C302 C306 C402 C406
C228
C227
C209 C210
C320 C420
D205 D206 D300 D301
D302 D400 D401 D402
D100 D101 D200 D201
D202 D203 D303 D304
D403 D404
BR200
DZ207 DZ300 DZ301
DZ400 DZ401
DZ204 DZ302 DZ303
DZ305 DZ306 DZ402
DZ403 DZ405 DZ406
TR204
TR205 TR206
TR201 TR203 TR309
TR310 TR311 TR312
TR313 TR314 TR315
TR316 TR317 TR320
TR322 TR409 TR410
TR411 TR412 TR413
TR414 TR415 TR416
TR417 TR420 TR422
TR202 TR300 TR301
TR302 TR303 TR304
TR305 TR306 TR307
TR308 TR321 TR400
TR401 TR402 TR403
TR404 TR405 TR406
TR407 TR408 TR421
TR100 TR101 TR200
TR318 TR418
TR319 TR419
IC300 IC400
PCB Bill of Materials
ARCAM
Document title: A85 POWER AMPLIFIER AND PSU
Document number: L882RS
Issue: 3
Revision: 2
Date: 06/06/01
Created by: JR
5D7805
5J7414D
5M393AD
6F110
7A9301
7D002C
7D327
8A001
8D225
8D301
8D302
8D418G
8K2306
8K2308
8K2404
8K2406
8K6201
1
1
1
2
1
2
1
1
1
1
1
2
1
1
3
1
4
8K7014
8M101
8Q003
8S004
A1008
A1404
A207
A219
C3751
E5402
F006
F008
L882PB_3
1
1
1
2
1
1
2
1
1
1
1
1
1
IC VREG POS 7805
SURFACE MOUNT HEX SCHMITT TRIGGER
IC COMPARATOR SM DUAL LM393A
PRES 100R LIN HORIZ
TRANSFORMER 3VA 9V+9V TYPE 9301
INDUCT 2U2 12x20mm
27mH INDUCTOR
IEC MAINS CONN PCB INS PX
PHONO SKT 4-WAY EMC GOLD
STEREO JACK PCB
MIN JACK DUAL 3.5mm HSJ1002-01-1020
CAMCON BINDING POST 4WAY GOLD
MOLEX MINI FIT HCS 6 WAY
MOLEX MINI FIT HCS 8 WAY
4-WAY AMP CT CONN
6-WAY AMP CT CONN
2WAY MOLEX VERT MALE CONNECTOR
FFC 14W 2.54MM VER PTH
EARTH LEAD
CAGE CLAMP 16A 1 WAY ARC003-236
FUSEHOLDER 20mm PCB
SW PUSH 2PCO
VOLTAGE SELECTOR SLIDE SWITCH
RELAY G5Z-2A-E 24V
RELAY MAINS DPDT 5V 5A
FUSE R452 T750mA
MAINS EMC SHIELD
HEATSINK CLIP TO220 13/8.6 DC/W
HEATSINK TO220 8.6 DEGC/W
X PRINTED CIRCUIT BOARD
ECO number: 01_1101A
Page 3 of 3
IC201
IC202
IC200
RV300 RV400
TX200
L300 L400
L200
SK203
SK104
SK105
SK201
SK100 SK101
SK200
SK204
SK102 SK106 SK107
SK205
PL100 PL101 PL300
PL400
SK103
EL
SK202
F200 F201
SW100
SW200
RLY100 RLY101
RLY200
F202
SH200
HS200
HS200
PCB
******** Obsolete, absent, redundant, or incorrect issue in PDM:
L882PB_3 1
X PRINTED CIRCUIT BOARD
PCB
***************************************************************************
*********************** Additions Since Last Issue ************************
***************************************************************************
Part
1A310
1A322
C3751
Qty Iss
2
2
1
Description
RES SM W4 1% 10K 1206
RES SM W4 1% 22K 1206
FUSE R452 T750mA
Designators
R314 R414
R308 R408
F202
***************************************************************************
*********************** Deletions Since Last Issue ************************
***************************************************************************
Part
1A247
1A310
C3501
Qty Iss
2
2
1
Description
RES SM W4 1% 4K7 1206
RES SM W4 1% 10K 1206
FUSE R452 T500mA
Designators
R314 R414
R308 R408
F202
PCB Bill of Materials
ARCAM
Document title: A85 PREAMPLIFIER
Document number: L866RS
Issue: 3
Revision: 1
Date: 06/06/01
Created by: JR
ECO number: 01_1101
Page 1 of 3
(Excluding parts for NF.)
Part
Qty Iss
Description
Designators
1A022
1A047
1
6
RES SM W4 1% 22R 1206
RES SM W4 1% 47R 1206
1A122
1A133
1A147
1A210
1
2
1
14
RES
RES
RES
RES
SM
SM
SM
SM
W4
W4
W4
W4
1%
1%
1%
1%
220R 1206
330R 1206
470R 1206
1K0 1206
1A212
1A222
1A227
1A247
1A256
1A310
1A322
1
4
4
1
2
4
41
RES
RES
RES
RES
RES
RES
RES
SM
SM
SM
SM
SM
SM
SM
W4
W4
W4
W4
W4
W4
W4
1%
1%
1%
1%
1%
1%
1%
1K2
2K2
2K7
4K7
5K6
10K
22K
1A410
16
RES SM W4 1% 100K 1206
1A510
6
RES SM W4 1% 1M0 1206
1A822
6
RES SM W4 1% 2R2 1206
2C022
6
MLC 22P 50V NPO 5% SM
2C110
2C210
4
6
MLC 100P 50V NPO 5% SM
MLC 1N0 50V X7R 10% SM
2C310
2C410
1
36
MLC 10N 50V X7R 10% SM
MLC 100N 50V X7R 10% SM
2D147W
14
WIMA FKP2 470P 63V CAP
1206
1206
1206
1206
1206
1206
1206
R185
R108
R186
R307
R300
R303
R100
R126
R158
R195
R302
R110
R115
R203
R117
R181
R112
R119
R138
R145
R149
R153
R163
R167
R171
R175
R179
R103
R129
R161
R194
R106
R183
R122
R201
C115
C158
C108
C100
C164
C119
C104
C118
C128
C146
C156
C171
C175
C179
C183
C101
C123
C142
C165
R109 R133 R134
R187
R304
R101 R102 R125
R127 R156 R157
R189 R190 R191
R196
R111 R135 R136
R116 R140 R141
R142
R182
R113
R120
R139
R146
R150
R154
R164
R168
R172
R176
R188
R114
R121
R143
R147
R151
R155
R165
R169
R173
R177
R204
R118
R137
R144
R148
R152
R162
R166
R170
R174
R178
R104
R130
R180
R197
R107
R184
R123
R202
C136
C159
C109
C121
C186
R105
R159
R192
R198
R131
R128
R160
R193
R199
R132
C105
C125
C143
C152
C168
C172
C176
C180
C184
C102
C124
C161
C166
C106
C126
C144
C153
C169
C173
C177
C181
C185
C103
C140
C162
R124 R200
C148 C149
C129 C130
C139 C160
C107
C127
C145
C155
C170
C174
C178
C182
C304
C122
C141
C163
PCB Bill of Materials
ARCAM
Document title: A85 PREAMPLIFIER
Document number: L866RS
Issue: 3
Revision: 1
Date: 06/06/01
Created by: JR
2D210
2D222W
2H410
2K447
2
2
2
8
PPRO
WIMA
PCRB
PEST
1N0 5% 63V RA
FKP2 2N2 63V CAP
100N 100V 10% RA 5mm
470N 63V 10%
2N610
8
ELST 10U 50V
2N710
2N722
2N747
2N810C
2N833
2P610CC
3
2
1
2
2
6
ELST
ELST
ELST
ELST
ELST
ELEC
3AS16W
5
DIODE SS SM BAS16W
3AV99W
22
DIODE SS SM BAV99W
3BS1D
3CW315V
4A846B
4A849B
4A856B
4B1964
4B5248
4J112
5A1844
5AVSDVC
5B072D
4
2
1
1
1
1
1
2
1
1
6
RECT S1D 1A 200V SM
ZENER 15V OW35 SM SOT23
TRANS LF SS N SM BC846B
TRANS LF SS N SM BC849B
TRANS LF SS P SM BC856B
TRANS AUDIO DRIVER P 2SA1964
TRANS AUDIO DRIVER N 2SC5248
TRANS JFET N J112
IC DS1844S-010
IC AUDIO DIGITAL VOL SM
IC AUDIO SM DUAL TL072
5B2134
5D317T
5S408DY
3
1
6
IC OPAMP DUAL SM OPA2134PA
IC VREG POS LM317T
IC 8 TO 1 MUX DG408DY SO16
5S413DY
8D225
8D226
8K2304
8K2404
8K2408
8K6604
8K8322
8K8330
A216
C3751
L866PB_3
1
4
1
1
1
1
1
1
1
1
2
1
IC QUAD SPST CMOS SW SO16
PHONO SKT 4-WAY EMC GOLD
PHONO SKT 2-WAY EMC GOLD
MOLEX MINI FIT HCS 4 WAY
4-WAY AMP CT CONN
8-WAY AMP CT CONN
4-WAY FR LOCK CONN
22-WAY FFC CONN SM 1mm
30-WAY FFC VERT CONN SM 1MM
RELAY DPDT 5V SM NEC EB2-5NU
FUSE R452 T750mA
X PRINTED CIRCUIT BOARD
100U 25V
220U 16V
470U 25V RA
1M0 35V
3M3 25V
10U 50V CERAFINE
ECO number: 01_1101
Page 2 of 3
C314 C315
C114 C135
C147 C167
C112 C113 C133 C134
C150 C151 C192 C193
C120 C154 C187 C188
C189 C190 C191 C305
C110 C131 C157
C302 C312
C306
C300 C310
C303 C313
C111 C116 C117 C132
C137 C138
D120 D302 D304 D305
D308
D100 D101 D102 D103
D104 D105 D106 D107
D108 D109 D110 D111
D112 D113 D114 D115
D116 D117 D118 D119
D121 D122
D300 D301 D306 D307
D310 D311
Q306
Q100
Q307
Q305
Q301
Q300 Q303
Z108
Z107
Z109 Z110 Z111 Z112
Z113 Z114
Z115 Z116 Z117
Z301
Z100 Z101 Z102 Z103
Z104 Z105
Z106
SK2 SK3 SK4 SK5
SK6
SK300
SK102
SK103
SK301
SK100
SK101
RLY100
F300 F301
PCB1
PCB Bill of Materials
ARCAM
Document title: A85 PREAMPLIFIER
Document number: L866RS
Issue: 3
Revision: 1
Date: 06/06/01
Created by: JR
ECO number: 01_1101
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
C3751
Qty Iss
2
Description
FUSE R452 T750mA
Designators
F300 F301
***************************************************************************
*********************** Deletions Since Last Issue ************************
***************************************************************************
Part
C3501
Qty Iss
2
Description
FUSE R452 T500mA
Designators
F300 F301
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
ARCAM
Part
Qty Iss
Description
Designators
1A022
1A047
1
6
RES SM W4 1% 22R 1206
RES SM W4 1% 47R 1206
1A110
1A122
1A133
1A147
1A210
1
1
2
1
14
RES
RES
RES
RES
RES
SM
SM
SM
SM
SM
W4
W4
W4
W4
W4
1%
1%
1%
1%
1%
100R 1206
220R 1206
330R 1206
470R 1206
1K0 1206
1A212
1A222
1A227
1A247
1A256
1A310
1A322
1
4
4
1
2
3
41
RES
RES
RES
RES
RES
RES
RES
SM
SM
SM
SM
SM
SM
SM
W4
W4
W4
W4
W4
W4
W4
1%
1%
1%
1%
1%
1%
1%
1K2
2K2
2K7
4K7
5K6
10K
22K
1A410
16
RES SM W4 1% 100K 1206
1A510
6
RES SM W4 1% 1M0 1206
1A822
6
RES SM W4 1% 2R2 1206
2C022
6
MLC 22P 50V NPO 5% SM
2C110
2C210
4
5
MLC 100P 50V NPO 5% SM
MLC 1N0 50V X7R 10% SM
2C310
2C410
1
39
MLC 10N 50V X7R 10% SM
MLC 100N 50V X7R 10% SM
2D147W
14
WIMA FKP2 470P 63V CAP
1206
1206
1206
1206
1206
1206
1206
R185
R108
R186
R182
R307
R300
R303
R100
R126
R158
R195
R302
R110
R115
R203
R117
R181
R112
R119
R138
R145
R149
R153
R163
R167
R171
R175
R179
R103
R129
R161
R194
R106
R183
R122
R201
C115
C158
C108
C100
C164
C119
C104
C118
C128
C146
C156
C171
C175
C179
C183
C304
C101
C123
C142
C165
R109 R133 R134
R187
R304
R101 R102 R125
R127 R156 R157
R189 R190 R191
R196
R111 R135 R136
R116 R140 R141
R142
R188
R113
R120
R139
R146
R150
R154
R164
R168
R172
R176
R204
R114
R121
R143
R147
R151
R155
R165
R169
R173
R177
R118
R137
R144
R148
R152
R162
R166
R170
R174
R178
R104
R130
R180
R197
R107
R184
R123
R202
C136
C159
C109
C121
R105
R159
R192
R198
R131
R128
R160
R193
R199
R132
C105
C125
C143
C152
C168
C172
C176
C180
C184
C308
C102
C124
C161
C166
C106
C126
C144
C153
C169
C173
C177
C181
C185
C309
C103
C140
C162
R124 R200
C148 C149
C129 C130
C139 C160
C107
C127
C145
C155
C170
C174
C178
C182
C186
C122
C141
C163
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 2 of 2
ARCAM
2D210
2D222W
2K410
2K447
2
2
2
9
PPRO
WIMA
PEST
PEST
1N0 5% 63V RA
FKP2 2N2 63V CAP
100N 63V 10%
470N 63V 10%
2N610
8
ELST 10U 50V
2N710
2N722
2N747
2N810C
2N833
2P610CC
3
2
1
2
2
6
ELST
ELST
ELST
ELST
ELST
ELEC
3AS16W
5
DIODE SS SM BAS16W
3AV99W
22
DIODE SS SM BAV99W
3BS1D
3CW315V
4A846B
4A849B
4A856B
4B1964
4B5248
4J112
5A1844
5AVSDVC
5B072D
4
2
1
1
1
1
1
2
1
1
6
RECT S1D 1A 200V SM
ZENER 15V OW35 SM SOT23
TRANS LF SS N SM BC846B
TRANS LF SS N SM BC849B
TRANS LF SS P SM BC856B
TRANS AUDIO DRIVER P 2SA1964
TRANS AUDIO DRIVER N 2SC5248
TRANS JFET N J112
IC DS1844S-010
IC AUDIO DIGITAL VOL SM
IC AUDIO SM DUAL TL072
5B2134
5D317T
5S408DY
3
1
6
IC OPAMP DUAL SM OPA2134PA
IC VREG POS LM317T
IC 8 TO 1 MUX DG408DY SO16
5S413DY
8D225
8D226
8K2304
8K2404
8K2408
8K6604
8K8022B
8K8330
A216
C3202
L937PB_1
1
4
1
1
1
1
1
1
1
1
2
1
IC QUAD SPST CMOS SW SO16
PHONO SKT 4-WAY EMC GOLD
PHONO SKT 2-WAY EMC GOLD
MOLEX MINI FIT HCS 4 WAY
4-WAY AMP CT CONN
8-WAY AMP CT CONN
4-WAY FR LOCK CONN
Connector 22way Molex 52806-2210
30-WAY FFC VERT CONN SM 1MM
RELAY DPDT 5V SM NEC EB2-5NU
FUSE R452 T2A
PRINTED CIRCUIT BOARD
100U 25V
220U 16V
470U 25V RA
1M0 35V
3M3 25V
10U 50V CERAFINE
C314 C315
C114 C135
C147 C167
C112 C113 C133 C134
C150 C151 C192 C193
C307
C120 C154 C187 C188
C189 C190 C191 C305
C110 C131 C157
C302 C312
C306
C300 C310
C303 C313
C111 C116 C117 C132
C137 C138
D120 D302 D304 D305
D308
D100 D101 D102 D103
D104 D105 D106 D107
D108 D109 D110 D111
D112 D113 D114 D115
D116 D117 D118 D119
D121 D122
D300 D301 D306 D307
D310 D311
Q306
Q100
Q307
Q305
Q301
Q300 Q303
Z108
Z107
Z109 Z110 Z111 Z112
Z113 Z114
Z115 Z116 Z117
Z301
Z100 Z101 Z102 Z103
Z104 Z105
Z106
SK2 SK3 SK4 SK5
SK6
SK300
SK102
SK103
SK301
SK100
SK101
RLY100
F300 F301
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
PCB Bill of Materials
Document title: A85 DISPLAY PCB
Document number: L865RS
Issue:2
Revision: 0
Date: 13/02/02
Created by: WAF
Part
Qty Iss
Description
1A000
1A110
3
7
RES SM W4 2% 0R0
RES SM W4 1% 100R 1206
1A115
1A133
1A212
1A215
1
1
2
10
RES
RES
RES
RES
1A222
1A247
1A310
1
2
36
RES SM W4 2% 2K2
RES SM W4 2% 4K7
RES SM W4 2% 10K
1A410
1A822
2C010A
2C018
2C210
4
4
2
2
11
RES
RES
MLC
MLC
MLC
2C410
14
MLC 100N 50V X7R 10% SM
2M610
2M710
2N722
2W110X4
4
1
2
10
ELST 10U 50V SM
ELST 100U 25V SM
ELST 220U 16V
CAP PACK NPO 0612 4X100P 50V 5%
3AS16W
3C5251B
3D006
3D007
3
1
1
10
DIODE SS SM BAS16W
ZENER 22V OW 35 SM SOT23
LED RED/GREEN 3MM L-93WEGW
LED GREEN 3.1MM SLR-37MG3F
4A847
5D7815
5G2402
5H1233A
5H3048
5M393AD
5M8532
4
1
1
1
1
3
1
TRANS LF SS N SM BC847B
IC VREG POS 7815
IC CMOS EPROM 24C02 SM
IC MICRO RESET DS1233 SM
H8/3048 128K FLASH MICROCONTROLLER
IC COMPARATOR SM DUAL LM393A
DUAL OUTPUT SINGLE SUPPLY AMP AD8532
7X040
8K2005
8K6315
8K7014A
8K8022A
A1211
A1505
1
1
1
1
1
1
6
XTAL 16MHZ SM GSX49-4
5-WAY AMP CT CONN
14 WAY DIL HEADER HORIZ
FFC 14W 2.54MM HOR PTH
22-WAY FFC CONN HORIZ 1MM PTH
EC16B2414
TACT SWITCH SM SDTM-610-NTR
A1506
A1509
1
10
TACT SWITCH BOURNS SDTX-644
TACT SWITCH SM SDTM-620-NTR
SM
SM
SM
SM
W4
W4
W4
W4
2%
2%
2%
2%
150R
330R
1K2
1K5
SM W4 2% 100K
SM W4 1% 2R2 1206
10P 50V NPO 10% SM
18P 50V X7R 10% SM
1N0 50V X7R 10% SM
ECO number: 01_E028
Page 1 of 2
Designators
R58 R59 R48
R51 R52 R53 R64 R65
R66 R67
R34
R33
R38 R46
R20 R23 R24 R31 R17
R18 R19 R21 R22 R25
R39
R40 R47
R49 R50 R56 R57 R73
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
R41 R42 R43 R44
R69 R70 R71 R72
C31 C32
C1 C2
C39 C40 C41 C42 C43
C44 C45 C46 C47 C48
C49
C3 C4 C5 C6 C7 C8
C9 C10 C12 C15 C16
C17 C25 C27
C11 C14 C26 C28
C29
C33 C34
C50 C51 C52 C53 C54
C55 C60 C61 C62 C63
D2 D3 D5
D4
LED11
LED1 LED2 LED3 LED4
LED5 LED6 LED7 LED8
LED9 LED10
Q1 Q2 Q3 Q4
Z12
Z5
Z2
Z1
Z6 Z7 Z8
Z11
X1
SK2
SK4
SK1
SK3
SW18
SW11 SW12 SW13 SW14
SW15 SW16
SW17
SW1 SW2 SW3 SW4 SW5
SW6 SW7 SW8 SW9 SW10
ARCAM
PCB Bill of Materials
Document title: A85 DISPLAY PCB
Document number: L865RS
Issue:2
Revision: 0
Date: 13/02/02
Created by: WAF
B1013
B2107
E916PM
F163
L865PB_2
1
1
2
2
1
MN12818A VFD ITRON
REMOTE RX PIC-26043TM2 38KHZ
DISPLAY CRADLE E916PM
STICKY PAD S/A 10 X 15mm
X PRINTED CIRCUIT BOARD
ECO number: 01_E028
Page 2 of 2
DISP1
RX1
DC1 DC2
SP1 SP2
PCB1
******** Obsolete, absent, redundant, or incorrect issue in PDM:
L865PB_2 1
X PRINTED CIRCUIT BOARD
PCB1
***************************************************************************
*********************** Additions Since Last Issue ************************
***************************************************************************
Part
B2107
E916PM
L865PB_2
Qty Iss
1
2
1
Description
REMOTE RX PIC-26043TM2 38KHZ
DISPLAY CRADLE E916PM
X PRINTED CIRCUIT BOARD
Designators
RX1
DC1 DC2
PCB1
***************************************************************************
*********************** Deletions Since Last Issue ************************
***************************************************************************
Part
B2103
L865PB_1
Qty Iss
1
1
Description
REMOTE RX SBX1610-52 38KHZ
X PRINTED CIRCUIT BOARD
Designators
RX1
PCB1
TITLE
A85 PHONO PCB
DWG. No. L870RS
ISSUE 2.0
DRAWN BY JAG
Part
ECO No 01_1070
RUN-OUT SHEET
Qty Iss
Description
1H010
1H022
2
8
RES MF W4 1% 10R
RES MF W4 1% 22R
1H110
10
RES MF W4 1% 100R
1H133
1H256
1H312
1H315
1H339
1H347
1H356
1H410
2
2
4
2
2
2
2
6
RES
RES
RES
RES
RES
RES
RES
RES
1H522
2A410
2D110N
2D110W
2D147W
4
1
2
2
6
RES MF W4 1% 2M2
CERD 100N 63V -20% +80% RA
PPRO 100P 63V 5% RA
PPRO W 100P 63V 5% RA
PPRO W 470P 63V 5% RA
2D210
2D213N
2D247N
2D310
2K410
4
2
2
4
8
PPRO
PPRO
PPRO
PPRO
PEST
2K510
2N622
2P710AS
2U610
3A4148
2
2
4
2
6
CAP MKS2 1U0 16V 10%
ELST 22U 63V
ELEC 100U 25V SILMIC
ELST NON POLAR 10UF 35V
SSDIODE 1N4148 75V
4A1085
4
TRANS LF SS P 2SA1085
4A546
14
TRANS LF SS N BC546B
4A556
12
TRANS LF SS P BC556B
5B071
8D230
8K2408
A1013
L870PB_2
2
1
1
1
1
MF
MF
MF
MF
MF
MF
MF
MF
W4
W4
W4
W4
W4
W4
W4
W4
1%
1%
1%
1%
1%
1%
1%
1%
330R
5K6
12K
15K
39K
47K
56K
100K
1N0 5% 63V RA
1N3 63V 5% RA
4N7 63V 5% RA
10N 63V 1% AXIAL
100N 63V 10%
IC FET OPAMP TL071
PHONO SKT 2-WAY HOR EMC GOLD
8-WAY AMP CT CONN
SW PUSH 4PCO
X PRINTED CIRCUIT BOARD
DATE 17-4-01
SHEET 1 of 1
Designators
R123 R223
R118 R119 R120 R121
R218 R219 R220 R221
R101 R102 R104 R105
R106 R201 R202 R204
R205 R206
R100 R200
R124 R224
R109 R110 R209 R210
R115 R215
R122 R222
R108 R208
R111 R211
R112 R113 R114 R212
R213 R214
R116 R117 R216 R217
C1
C119 C219
C109 C209
C108 C116 C117 C208
C216 C217
C101 C120 C201 C220
C115 C215
C110 C210
C111 C112 C211 C212
C104 C105 C106 C107
C204 C205 C206 C207
C113 C213
C100 C200
C102 C103 C202 C203
C118 C218
D100 D101 D102 D200
D201 D202
TR106 TR107 TR206
TR207
TR108 TR109 TR110
TR111 TR112 TR113
TR114 TR208 TR209
TR210 TR211 TR212
TR213 TR214
TR100 TR101 TR102
TR103 TR104 TR105
TR200 TR201 TR202
TR203 TR204 TR205
IC100 IC200
SK1
SK2
SW100
PCB1
******** Obsolete, absent, redundant, or incorrect issue in PDM:
TITLE
A85 PHONO PCB
DWG. No. L870RS
ISSUE 2.0
DRAWN BY JAG
L870PB_2
1
ECO No 01_1070
RUN-OUT SHEET
X PRINTED CIRCUIT BOARD
DATE 17-4-01
SHEET 2 of 1
PCB1
***************************************************************************
*********************** Additions Since Last Issue ************************
***************************************************************************
Part
2D210
L870PB_2
Qty Iss
2
1
Description
PPRO 1N0 5% 63V RA
X PRINTED CIRCUIT BOARD
Designators
C120 C220
PCB1
***************************************************************************
*********************** Deletions Since Last Issue ************************
***************************************************************************
Part
2D147W
L870PB_1
Qty Iss
2
1
Description
PPRO W 470P 63V 5% RA
X PRINTED CIRCUIT BOARD
Designators
C114 C214
PCB1
PCB Bill of Materials
ARCAM
Document title: P85 THIRD CHANNEL
Document number: L911RS
Issue: 1
Revision: 1
Date: 06/06/01
Created by: JR
Part
Qty Iss
Description
ECO number: 01_1101
Page 1 of 2
Designators
1A000
1A022
1A110
2
4
13
RES SM W4 1% 0R0 1206
RES SM W4 1% 22R 1206
RES SM W4 1% 100R 1206
1A115
1A122
1A133
1A210
2
2
2
7
RES
RES
RES
RES
SM
SM
SM
SM
W4
W4
W4
W4
1%
1%
1%
1%
150R 1206
220R 1206
330R 1206
1K0 1206
1A215
1A218
1A233
1A247
1A268
1A310
1
1
2
3
1
13
RES
RES
RES
RES
RES
RES
SM
SM
SM
SM
SM
SM
W4
W4
W4
W4
W4
W4
1%
1%
1%
1%
1%
1%
1K5
1K8
3K3
4K7
6K8
10K
1A322
1A410
1A510
1A822
1C856
1J147
1T002
2C110
2C210
2C310
2C410
4
1
1
1
2
2
1
2
1
3
7
RES SM W4 1% 22K 1206
RES SM W4 1% 100K 1206
RES SM W4 1% 1M0 1206
RES SM W4 1% 2R2 1206
RES CF 2W 5R6 5%
RES 2W MF 5% 470R
THERMISTOR SIEMENS B59008
MLC 100P 50V NPO 5% SM
MLC 1N0 50V X7R 10% SM
MLC 10N 50V X7R 10% SM
MLC 100N 50V X7R 10% SM
2D147W
2H410
2K410
2K447
2N610
2N710
1
3
1
1
2
5
PPRO
PCRB
PEST
PEST
ELST
ELST
2N710B
2N910A
2V710
3AS16W
3B4003
3BGBU8D
3CW315V
3CW34V7
2
2
1
3
4
1
2
4
ELST 100U 100V
ELST 10m 63V RA 35mm
ELST NON POLAR 100UF 16V
DIODE SS SM BAS16W
RECTIFIER 1N4003F 1A 200V
BRIDGE RECTIFIER 8A 200V
ZENER 15V OW35 SM SOT23
ZENER 4V7 OW 35 SM SOT23
1206
1206
1206
1206
1206
1206
W 470P 63V 5% RA
100N 100V 10% RA 5mm
100N 63V 10%
470N 63V 10%
10U 50V
100U 25V
4AFMMT497 11
TRANS LF SS N SM FMMT497
4AFMMT597 10
TRANS LF SS P SM FMMT597
R345 R346
R321 R322 R323 R337
R105 R106 R315 R316
R317 R318 R319 R320
R343 R344 R347 R348
R349
R338 R339
R103 R104
R341 R342
R100 R101 R102 R324
R325 R326 R354
R331
R332
R333 R335
R310 R328 R329
R355
R300 R301 R302 R303
R304 R305 R306 R307
R309 R311 R312 R313
R314
R308 R327 R334 R336
R340
R330
R107
R350 R351
R352 R353
TH100
C307 C308
C105
C103 C104 C312
C100 C101 C309 C310
C313 C314 C315
C316
C108 C109 C311
C319
C317
C305 C318
C102 C300 C301 C303
C304
C302 C306
C106 C107
C320
D300 D301 D302
D100 D101 D303 D304
BR100
DZ300 DZ301
DZ302 DZ303 DZ305
DZ306
TR309 TR310 TR311
TR312 TR313 TR314
TR315 TR316 TR317
TR320 TR322
TR300 TR301 TR302
TR303 TR304 TR305
TR306 TR307 TR308
TR321
PCB Bill of Materials
ARCAM
Document title: P85 THIRD CHANNEL
Document number: L911RS
Issue: 1
Revision: 1
Date: 06/06/01
Created by: JR
4B179
4CSAP15N
4CSAP15P
5B072D
5J7414D
6F110
7D002C
8D226
8D418G
8K2304
8K6201
8K7014
A213
L911PB_1
2
1
1
1
1
1
1
1
1
1
1
1
2
1
NPN TRANS MP BD179
TRANS POWER NPN SAP15N
TRANS POWER PNP SAP15P
IC AUDIO SM DUAL TL072
SURFACE MOUNT HEX SCHMITT TRIGGER
PRES 100R LIN HORIZ
INDUCT 2U2 12x20mm
PHONO SKT 2-WAY EMC GOLD
CAMCON BINDING POST 4WAY GOLD
MOLEX MINI FIT 4 WAY
2WAY MOLEX VERT MALE CONNECTOR
FFC 14W 2.54MM VER PTH
RLY SPST 24V SPKR
X PCB
ECO number: 01_1101
Page 2 of 2
TR100 TR101
TR318
TR319
IC300
IC100
RV300
L300
SK101
SK102
SK103
PL300
SK100
RLY100 RLY101
PB
******** Obsolete, absent, redundant, or incorrect issue in PDM:
L911PB_1 1
X PCB
PB
***************************************************************************
*********************** Additions Since Last Issue ************************
***************************************************************************
Part
1A310
1A322
Qty Iss
1
1
Description
RES SM W4 1% 10K 1206
RES SM W4 1% 22K 1206
Designators
R314
R308
***************************************************************************
*********************** Deletions Since Last Issue ************************
***************************************************************************
Part
1A247
1A310
Qty Iss
1
1
Description
RES SM W4 1% 4K7 1206
RES SM W4 1% 10K 1206
Designators
R314
R308
TITLE P85 SWITCH BOARD
DWG. No. L910PB
ISSUE 1.0
DRAWN BY CL
part
ECO No 00_1099
RUN-OUT SHEET
Qty Iss
Description
******** 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
******** PCB Build items:
1H118
1
RES MF W4
1H133
1
RES MF W4
1H147
3
RES MF W4
1H156
2
RES MF W4
1H310
13
RES MF W4
1%
1%
1%
1%
1%
180R
330R
470R
560R
10K
1H410
2A410
1
9
RES MF W4 1% 100K
CERD 100N 63V -20% +80% RA
2N610
2N710
3A4148
3D006
3D007
4A546
4A556
5J7432
7W005
8K7014A
8S028N
A1503
A1506
L910PB_1
1
4
2
1
2
3
4
1
1
2
1
2
1
1
ELST 10U 50V
ELST 100U 25V
SSDIODE 1N4148 75V
LED RED/GREEN 3MM L-93WEGW
LED GREEN 3.1MM SLR-37MG3F
TRANS LF SS N BC546B
TRANS LF SS P BC556B
HCMOS 74HC32
CER RESON 4.00MHz
FFC 14W 2.54MM HOR PTH
IC SOCKET 28 NARROW
A TACT SWITCH SKHVPE
TACT SWITCH BOURNS SDTX-644
X PRINTED CIRCUIT BOARD
******** Prototype or pre-production parts used:
A1503
2
A TACT SWITCH SKHVPE
DATE 29/09/00
SHEET 1 of 2
Designators
Z1
R15
R14
R19 R20 R21
R12 R13
R1 R2 R3 R4 R5 R6
R7 R8 R9 R10 R11
R17 R18
R16
C1 C2 C3 C4 C9 C10
C11 C12 C13
C5
C6 C7 C8 C14
D1 D2
LED3
LED1 LED2
Q5 Q6 Q7
Q1 Q2 Q3 Q4
Z2
X1
SK1 SK2
Z1
SW1 SW2
SW3
PCB
SW1 SW2
******** Obsolete, absent, redundant, or incorrect issue in PDM:
L910PB_1 1
X PRINTED CIRCUIT BOARD
PCB
***************************************************************************
********************* Additions Since L910RS Issue C **********************
***************************************************************************
Part
A1503
L910PB_1
Qty Iss
2
1
Description
A TACT SWITCH SKHVPE
X PRINTED CIRCUIT BOARD
Designators
SW1 SW2
PCB
***************************************************************************
********************* Deletions Since L910RS Issue C **********************
TITLE P85 SWITCH BOARD
DWG. No. L910PB
ISSUE 1.0
DRAWN BY CL
ECO No 00_1099
RUN-OUT SHEET
DATE 29/09/00
SHEET 2 of 2
***************************************************************************
Part
A1504
L910PB_C
Qty Iss
2
1
Description
TACT SWITCH 2-PIN LOW PROF
PRINTED CIRCUIT BOARD
Designators
SW1 SW2
PCB
A85 General Assembly Parts List
ITEM
A
B
230V
L813RC
ITEM
240V
C12406
E804HK
E804MI
115V
100V
SILVER
BLACK
L907TX
115V
C12406
100V
TBA
SILVER
BLACK
DESCRIPTION
REMOTE CONTROL
TRANSF A85 100V
DESCRIPTION
T4AL FUSE
HEAT-SINK
MAINS INSULATOR
E821CH
E83001
E032AY
E912MC
E850MC
E853MC
E858PM
E859MC
E860MC
E866MC
E869PM
E879PM
E879SL
E907MC
E920MC
F022
F037
F038
F062
F065
F082
F162
F164
CHASSIS
TX GASKET
REAR PANEL
85 AMP TRANSISTOR CLAMP
HEAT SHUNT
2000 A85 PRE-AMP REG CLAMP
LARGE VOLUME KNOB
PHONO BLANKING PLATE
MODULE BLANK
A85 TOROIDAL SHIELD
TACT BUTTON POWER
FOOT
CONFIGURATION LABEL
KOOL PAD
HEAT SINK CLAMP
FUSE HOLDER COVER
TOROID CLAMP 90MM DIA.
RUBBER WASHER
FUSE CLIP
ADHESIVE CABLE CLIP
TO220 SIL PAD
TAPE 50m ROLL
DAMPING PAD
HA3A16A
HA3V10A
HA3V06A
HA4A12B
HA5L20B
HA5K70B
HA6K45A
M3 x 16mm SCREW
MC TORX M3X10 STZP
M3 x 6mm SCREW
M4 x 12mm SCREW
M5 x 20mm HEX HEAD BOLT BLACK
M5 x 70mm BOLT
M6 x 45mm BOLT
WHERE USED
REPLACE 7A9301 AT TX200
TRANSFORMER FITTED ON
PCB L865AY
WHERE USED
FUSE & SPARE FUSE HOLDER
ON TOP OF CHASSIS UNDER TX
SPACER
UNDER TX
ON HEAT-SINK E804HK
BETWEEN TOROID TX & CHS
CHASSIS
HEAT-SINK
HEAT SINK
FOR FUSE HOLDERS
FOR TX
ON TOP OF TX
FOR SPARE FUSE
FOR TX SCREEN WIRE
UNDER VOLTAGE REG
ON TOP OF HEAT SINK
COVER TO FP
HEATSHUNT
MOTHER PCB & SUB-FRONT
RR PAN ‘E’ EARTH
CLAMP E912MC TO E804HK
HEATSINK SCREWS
TX FXG
QTY
1
1
QTY
2
1
1
1
1
1
4
1
1
1
1
1
1
1
6
1
1
1
2
1
1
1
1
3
0.003
400M
M
2
14
11
2
4
3
1
A85 General Assembly Parts List
ITEM
230V
HA6K60A
HF4V09B
HJ4A00A
HJ4C00D
HL4SA
HL4SB
HL5EB
HP008
K5408
L865AY
L937AY
L882AY
L882TX
L914CA
L915CA
L916CA
L917CA
115V
L882TX
100V
SILVER
BLACK
L894AY
L879TX
E834CP
E973AY
HA4V06S
E802SL
E833CP
E980AY
HA4V06B
DESCRIPTION
TRANSBOLT
No. 4 x 9mm SCREW
M4 NUT
M4 WAISTED NUT
WASHER
M4 SHAKE PROOF
M5 WASHER BLACK
SNAP RIVET BLACK PLASTIC (3000)
SLEEVE FOR LIGHT PIPES (6mm)
A85 DISPLAY PCB ASSEMBLY
A85 PRE AMP PCB ASSEMBLY
PREVIOUS BOARD FITTED L866AY
A85 PCB ASSEMBLY
A85 TRANSFORMER
DISP - PRE CABLE ASSEMBLY
DISP - PWR CABLE ASSEMBLY
PWR - HEADPHONE CABLE ASSEMBLY
PWR - PRE CABLE ASSEMBLY
COVER PLATE
FASCIA ASSEMBLY
M4 X 6mm SCREW
100V LABEL
WHERE USED
REAR & MODULES
RR PAN ‘E’ EARTH
RR PAN ‘E’ EARTH
RR PAN ‘E’ EARTH
HEATSINK WASHER CTRE
BLANKING PLATES
TX
COVER TO CHS
COVER VOL SEL SW HOLE
QTY
1
17
1
1
3
1
3
4
1
1
1
1
1
1
1
1
1
1
1
4
1
P85 General Assembly
ITEM
230V
5B483028
8K004
8K006
C12406
E031AY
E804HK
E804MI
E821CH
E823AP
E83001
E861MC
E866MC
E869PM
E879PM
E879SL
E907MC
E912MC
E916SL
E920MC
F022
F037
F038
F065
F162
F164
F200
HA3V10A
HA 3V06A
HA4A12B
HA5K70B
HA5L20B
HA6K60A
HF4V09B
HJ4A00A
HL4SA
HL5EB
K5408
L882AY
115V
C12406
E916SL
100V
TBA
E917SL
SILVER
BLACK
DESCRIPTION
HOLTEK PLUS L819SW
JUMPER SOCKET 0.1" M7571-05
CONNECTOR 14MM SHORTING BAR
P2148
FUSE T4AT
REAR PANEL ASSEMBLY
HEAT-SINK
MAINS INSULATOR
CHASSIS
TX MASK
TX GASKET
P85 3RD CHANEL BLANKING PLATE
A85 TOROIDAL SHIELD
TACT BUTTON POWER
FOOT
CONFIGURATION LABEL
KOOL PAD
85 AMP TRANSISTOR CLAMP
FUSE LABEL
HEATSINK CLAMP
FUSE HOLDER COVER
TOROID CLAMP
RUBBER WASHER
ADHESIVE CABLE CLIP
TAPE 50m ROLL
DAMPING PAD
HOLE BLANKING GROMMET
M3 x 10mm SCREW
MC TORX M3X6 STZP
M4 x 12mm SCREW
M5 x 70mm BOLT
M5 x 20MM HEX HEAD BOLT BLACK
ST'L
M6 x 60mm BOLT
No. 4 x 9mm SCREW
M4 NUT
M4 SHAKE PROOF
M5 WASHER BLACK
SLEEVE FOR LIGHT PIPES (6mm)
POWER SUPPLY & AMP PCB
WHERE USED
Z1 of L910AY
FUSE & SPARE FUSE HOLDER
ON TOP OF CHASSIS UNDER TX
SPACER
On Top of TX
UNDER TX
RAER PANEL
BETWEEN TOROID TX & CHS
CHASSIS
HEAT SINK
FOR HEAT-SINKS
HEAT SINK
FOR FUSE HOLDERS
FOR TX
ON TOP OF TX
FOR TX SCREEN WIRE
ON TOP OF HEAT SINK
COVER TO FP
FOR REAR PANEL ‘LINK PARKING'
MOTHER PCB & SUB-FRONT
RR PAN ‘E' EARTH
HEATSINK SCREWS
CLAMPING OF E912MC TO E804HK
TX FXG
REAR
EARTH
CHASSIS EARTH
HEAT-SINK WASHER CTRE
QTY
1
2
1
2
1
1
1
1
1
1
1
1
1
6
1
1
4
2
1
2
1
2
1
0.003
400MM
2
9
4
1
3
4
1
16
1
2
3
1
1
P85 General Assembly
ITEM
230V
L884TX
L910AY
L915CA
115V
L884TX
100V
L880TX
SILVER
E834CP
E974AY
HA4V06S
BLACK
E833CP
E990AY
HA4V06B
DESCRIPTION
A85P TRANSFORMER
SWITCH PCB
CABLE FFC 0.1" 14WAY A85 DISP - PWR
COVER PLATE
FACIA ASSY
M4 X 6mm SCREW
WHERE USED
QTY
1
1
1
1
1
4
P85/3 General Assembly
ITEM
230V
5B483028
8K004
8K006
C12406
E031AY
E804HK
E804MI
E806HK
E821CH
E823AP
E83001
E866MC
E869PM
E879PM
E879SL
E907MC
E909MC
E912MC
E921MC
E922SL
F022
F037
F038
F065
F065
F162
F164
F200
HA3V10A
HA3V06A
HA4A12B
HA5K70B
115V
C12406
100V
TBA
SILVER
BLACK
DESCRIPTION
PIC CHIP + L819SW
2 WAY JUMPER SKT
CONNECTOR 14MM SNORTING BAR
P2148
FUSE 20MM 4AT
REAR PANEL ASSEMBLY
HEAT-SINK
MAINS INSULATOR
RD
P85 3 CHANNEL HEAT-SINK
CHASSIS
P85 TX MASK
TX GASKET
TORODIAL SAFETY SHEILD
TACT BUTTON POWER
FOOT
CONFIGURATION LABEL
KOOL PAD
RD
P85 3 CHANNEL SIL PAO
85 AMP TRANSISTOR CLAMP
HEATSINK CLAMP
P85 3RD CHANEL FUSE LABEL
FUSE HOLDER COVER
TOROID CLAMP
RUBBER WASHER
ADHESIVE CABLE CLIP
ADHESIVE CABLE CLIP
TAPE 50m ROLL
DAMPING PAD
HOLE BLANKING GROMMET
M3 x 10mm SCREW
MC TORX P/H M3X6 STZP
M4 x12mm SCREW
M5 x 70mm BOLT
WHERE USED
QTY
1
2
1
FUSE & SPARE FUSE HOLDER
ON TOP OF CHASSIS UNDER TX
SPACER
2
1
1
1
1
1
1
UNDER TX
1
UNDER TX & WASHER
1
1
6
CHASSIS
1
HEAT SINK
1
1
FOR HEAT-SINKS E804HK & E806HK
6
HEAT SINK
1
2
FOR FUSE HOLDERS
2
FOR TX
1
ON TOP OF TX
2
FOR TX SCREEN WIRE
1
FOR TX SCREEN WIRE
1
ON TOP OF HEAT SINK
0.003
COVER TO FP
400MM
FOR REAR PANEL
2
MOTHER PCB & SUB-FRONT
22
4
HEATSINK SCREWS
5
P85/3 General Assembly
ITEM
230V
HA5L20B
HA6K60A
HF4V09B
HJ4A00A
HL4SA
HL5EB
K5408
L882AY
L884TX
L910AY
L911AY
L915CA
L919CA
115V
L884TX
100V
SILVER
BLACK
L880TX
E832CP
E974AY
HA4V06S
E831CP
E990AY
HA4V06B
DESCRIPTION
M5 x 20MM HEX HEAD BOLT BLACK
ST=L
M6 x 60mm BOLT
No. 4 x 9mm SCREW
M4 NUT
M4 SHAKE PROOF
M5 WASHER BLACK
SLEEVE FOR LIGHT PIPES (6mm)
POWER SUPPLY & AMP PCB
A85 TRANSFORMER
SWITCH PCB
RD
A85 3 CHANNEL
CABLE FFC 0.1" 14WAY A85 DISP - PWR
CABLE FFC 0.1" 14WAY A85 3RD
CHANNEL
COVER PLATE
FACIA ASSY
M4 X 6mm SCREW
WHERE USED
CLAMP E912MC TO E804HK /
E806HK
TX FXG
REAR
FOR HEAT SINK
CHASSIS EARTH
HEAT-SINK WASHER CTRE
TX
COVER SIDE
QTY
6
1
20
1
2
5
1
1
1
1
1
1
1
1
1
4
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