HANDBOOK

Arcam A80, P80 amplifiers

Safety guidelines

CAUTION
RISK OF ELECTRIC SHOCK DO NOT OPEN

ATTENTION

RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR

8. Cleaning

Unplug the unit from the mains supply before cleaning. The case should normally only require a wipe with a soft, damp, lint-free cloth. Do not use paint thinners or other chemical solvents for cleaning. We do not advise the use of furniture cleaning sprays or polishes as they can cause indelible white marks if the unit is subsequently wiped with a damp cloth.
CAUTION: To reduce the risk of electric shock, do not remove cover (or back). No user serviceable parts inside. Refer servicing to qualified service personnel. WARNING: To reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture.
The lightning flash with an arrowhead symbol within an equilateral triangle, is intended to alert the user to the presence of uninsulated dangerous voltage within the products enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the product.

9. Power sources

Only connect the appliance to a power supply of the type described in the operating instructions or as marked on the appliance.
10. Power-cord protection
Power supply cords should be routed so that they are not likely to be walked on or pinched by items placed upon or against them, paying particular attention to cords and plugs, and the point where they exit from the appliance.
CAUTION: In Canada and the USA, to prevent electric shock, match the wide blade of the plug to the wide slot in the socket and insert the plug fully into the socket.
Important safety instructions
This product is designed and manufactured to meet strict quality and safety standards. However, you should be aware of the following installation and operation precautions:

11. Grounding

Ensure that the grounding means of the appliance is not defeated.

12. Power lines

Locate any outdoor antenna/aerial away from power lines.
1. Take heed of warnings and instructions
You should read all the safety and operating instructions before operating this appliance. Retain this handbook for future reference and adhere to all warnings in the handbook or on the appliance.

13. Non-use periods

If the unit has a standby function, a small amount of current will continue to flow into the equipment in this mode. Unplug the power cord of the appliance from the outlet if left unused for a long period of time.

2. Water and moisture

The presence of electricity near water can be dangerous. Do not use the appliance near water for example next to a bathtub, washbowl, kitchen sink, in a wet basement or near a swimming pool, etc.

14. Abnormal smell

If an abnormal smell or smoke is detected from the appliance, turn the power off immediately and unplug the unit from the wall outlet. Contact your dealer immediately.
3. Object or liquid entry
Take care that objects do not fall and liquids are not spilled into the enclosure through any openings. Liquid filled objects such as vases should not be placed on the equipment.

15. Servicing

You should not attempt to service the appliance beyond that described in this handbook. All other servicing should be referred to qualified service personnel.

4. Ventilation

Do not place the equipment on a bed, sofa, rug or similar soft surface, or in an enclosed bookcase or cabinet, since ventilation may be impeded. We recommend a minimum distance of 50mm (2 inches) around the sides and top of the appliance to provide adequate ventilation.

16. Damage requiring service
The appliance should be serviced by qualified service personnel when: A. B. C. D. E. the power-supply cord or the plug has been damaged, or objects have fallen, or liquid has spilled into the appliance, or the appliance has been exposed to rain, or the appliance does not appear to operate normally or exhibits a marked change in performance, or the appliance has been dropped or the enclosure damaged.

5. Heat

Locate the appliance away from naked flames or heat producing equipment such as radiators, stoves or other appliances (including other amplifiers) that produce heat.

6. Climate

The appliance has been designed for use in moderate climates.

Safety compliance

This product has been designed to meet the IEC 60065 international electrical safety standard.

7. Racks and stands

Only use a rack or stand that is recommended for use with audio equipment. If the equipment is on a portable rack it should be moved with great care, to avoid overturning the combination. A80/P80 2

Using this handbook

This handbook has been designed to give you all the information you need to install, connect, set up and use the Arcam A80 amplifier or the P80 power amplifier. The A80 amplifier is described first, then the P80. The CR-389 remote control handset supplied with the A80 amplifier is also described. Your amplifier(s) may have been installed and set up by an authorised Arcam dealer. In this case, you may wish to go directly to the sections describing the use of this equipment.

Contents

Safety guidelines.. 2 Important safety instructions..2 Safety compliance..2 Using this handbook.. 3 Safety...3 Installation: A80 amplifier. 4 Positioning the unit..4 Connecting to loudspeakers..4 Connecting to a power supply.4 Connecting to other equipment..5 Using your A80 amplifier.. 6 Front panel controls...6 Recording..7 Setting up your A80 amplifier.. 8 Menu map..8 Using the remote control.. 9 CR-389 Remote Control..9 Installation: P80 power amplifer. 10 Connecting to power, loudspeakers and other equipment...10 Remote switching..10 Using your P80 power amplifier.. 11 Bi-wiring and bi-amping loudspeakers. 12 Before you start..12 Bi-wiring your loudspeakers..12 Bi-amping your system..12 Service information.. 13 Technical specifications.. 13 Guarantee.. 14 On-line registration.. 14

Safety

Safety guidelines are set out on the inside front cover of this handbook. Many of these items are common sense precautions, but for your own safety, and to ensure that you do not damage the unit, we strongly recommend that you read them.

A80/P80 3

Installation: A80 amplifier

TRIG OUT TAPE

OHMS L

VOLTAGE SELECT

POWER INLET

REMOTE IN

115/230V
PRE OUT LINE OUT RECORD OUT PLAY IN DVD AV TUNER CD AUX PHONO (MM)

9 bk bl bm bn bo

Positioning the unit
Place your amplifier on a level, firm surface. Avoid placing the unit in direct sunlight or near sources of heat or damp. Ensure adequate ventilation. Do not place the unit in an enclosed space such as a bookcase or cabinet as both of these will impede air flow through the ventilation slots.
Connect the right speaker to the terminals on the back of your amplifier marked R and the left speaker to the terminals marked L. Connect your loudspeakers so that the red (positive/+) terminal on each loudspeaker is connected to the red (positive/+) terminal on the amplifier. Your loudspeaker cables may be marked to show polarity (negative/ and positive/+), if not, then the positive terminal can usually be identified by a ridge or coloured marking. Now connect your loudspeakers black (negative/) terminals to the black (negative/) terminals on the amplifier. Ensure that no stray strands of inner wires are allowed to touch another cable or the amplifiers casing. This can cause a short circuit and damage your amplifier!
Connecting to loudspeakers
You can connect one or two pairs of loudspeakers to your amplifier, provided each pair is rated between 816. If one or both pairs have an impedance of less than 8, the combined load on the amplifier falls below 4 and could cause an overload. If so, the overload protection circuit may engage and the amplifier will not work. To connect one pair of loudspeakers, use the SP1 terminals.
Connecting to a power supply

Wrong plug?

Check that the plug supplied with the unit fits your supply and that your mains supply voltage agrees with the voltage setting (115V or 230V) indicated on the rear panel of the unit before plugging in.

SP1 and SP2 terminals

Both sets of loudspeaker terminals can be muted by pressing the MUTE button on the remote control. To switch SP1 and SP2 independently, use the front panel switches (see page 6, ) or the remote control (see page 9). Your amplifier is fitted with industry standard loudspeaker terminals. The terminal accepts spade terminals or bare wires. To connect a spade terminal or bare wire, unscrew the red (or black) part of the loudspeaker terminal first. Insert the wire or spade terminal and screw it back up. CAUTION: Do not over tighten the loudspeaker terminals or use a wrench, pliers, etc., as this could cause damage to the terminals which will not be covered under warranty.

If your mains supply voltage or mains plug is different, consult your Arcam dealer or Arcam Customer Support on +44 (0)1223 203203. The product must be earthed.

Mains lead

The appliance is normally supplied with a moulded mains plug already fitted to the lead. If for any reason the plug needs to be removed, it must be disposed of immediately and securely, as it is a potential shock hazard when inserted into the mains socket. Should you require a new mains lead, contact your Arcam dealer.

Plugging in

+ R Arcam A80 amplifier + L
Push the plug (IEC line socket) of the power cable supplied with the unit into the socket (POWER INLET) in the back of the unit. Make sure it is pushed in firmly.
Put the plug on the other end of the cable into your power supply socket and switch the socket on.
+ Right speaker + Left speaker

A80/P80 4

Wiring your loudspeakers

Standby power

For remote standby operation, the amplifiers control power supply is kept powered up all the time the unit is connected to the mains supply. The front panel power switch powers down all other circuitry. Power consumption in this mode is less than 2.5W. This means that even though the power switch is off, it may be possible to hear a slight hum coming from the mains transformer inside the amplifier. This is perfectly normal. If the unit is to be left unused for an extended period, we recommend that it is disconnected from the mains supply by switching it off at the wall socket, or by disconnecting the power lead.
Connecting to other equipment
The use of high quality interconnect cables to and from your amplifier is recommended to ensure the best sound quality. Sockets marked L (and R) on your amplifier should only be connected to sockets marked L (and R) on other equipment. All the line inputs have the same sensitivity and may be used with equipment other than that labelled, if needed. LINE OUT Connect this input to the audio outputs of any unit with a line level output, e.g. tape deck, tuner, etc. TAPE1/RECORD OUT Connect these output sockets to the input sockets of your cassette deck (usually labelled RECORD). TAPE1/PLAY IN Connect these input sockets to the output sockets of your cassette deck (usually labelled PLAY). If you do not have a cassette deck you can use this input for other (line level) equipment, such as a CD player, tuner, VCR, etc., but not a turntable. DVD player.
9 Connect this input to the audio outputs of a DVD
AV Connect this input to the audio outputs of audiovisual equipment such as a VCR, laserdisc player, satellite or Nicam tuner. TUNER Connect this input to the audio outputs of your radio tuner. CD Connect this input to the audio outputs of your CD player or DAC (digital to analogue converter). AUX Connect this input to the audio outputs of any unit with a line level output, e.g. tape deck, tuner, etc. PHONO Connect this input to the output of your record player. This input provides RIAA equalization and is compatible with most high output moving magnet (MM) cartridges. Phono earth terminal For connecting your turntable earth lead (if fitted). Note that this terminal must not be used as a safety earth. TRIG OUT and REMOTE IN (12V in and out) These connections are for use in multi-room installations. In normal use there is no need to make any connections to these sockets. If you are bi-amping or tri-amping with a power amplifier and wish to power both units on or off simultaneously, see page 11.

Pre/power amplifier connections
If you wish to use your A80 as a power amplifier, please consult your Arcam dealer. PRE OUT To use your amplifier as a pre-amplifier, connect the PRE OUT sockets to the input sockets of your power amplifier. With a power amplifier of the correct gain (e.g. the P80 power amplifier) you can bi-amplify (bi-amp) suitable loudspeakers, giving significant improvements in sound quality (see page 12). A80/P80 5

Using your A80 amplifier

A80 AMPLIFIER
SP1 SP2 PROCESSOR ENTER SELECT

PHONES

Front panel controls
This section describes how to operate your amplifier. If your amplifier has not been installed for you, you should first read the section Installation: A80 on page 4.

Volume control settings

It is important to realise that the position of the Control knob is not an accurate indication of the power delivered to your loudspeakers. The amplifier often delivers its full power before the volume control reaches its maximum position, particularly when listening to heavily recorded compact discs. However the amplifier also has to be capable of giving full power output from much lower level sources, such as tuners and cassette decks. Using these sources, the volume control setting may be much higher before distortion (audible overload) sets in. To compensate for this, the input levels of each source may be individually adjusted to avoid accidental overload (see page 8).
POWER (and power indicator light)
Switches the unit on and off. (You can also switch the amplifier into standby mode with the remote control handset.) The light indicates the status of the amplifier. A red light means the amplifier is in standby mode (press the Power/Standby button on the remote control, or the POWER button on the front panel, to switch between standby and powered-up modes). When you switch your amplifier on, the light glows amber for a few seconds, during which time the speakers are disconnected. The light changes to green when the amplifier is ready for use. The light may flash if a fault has occurred the fault type is shown on the display. You should unplug the amplifier and leave it for a few minutes before reconnecting. If the fault cannot be cleared, unplug your amplifier and contact your Arcam dealer.

SP1 and SP2

These buttons allow you to select and deselect the main (SP1) and secondary (SP2) set of speakers attached to your amplifier. The light above each button glows if the corresponding speakers are currently selected. If both lights are out the amplifier will appear not to work, as all speakers are switched off!

Source selectors

These buttons select the source connected to the corresponding input.The input currently selected is indicated by text on the display.

This socket accepts headphones with an impedance rating between 8 and 2k, fitted with a 1/4-inch stereo jack plug. If you wish to listen on headphones only, use the SP1 and SP2 buttons (if necessary) to mute the speakers. The headphone socket is always active.
This input is similar to the other line level inputs on the amplifier and may be used with a VCR or a second recording unit (e.g. cassette deck).

Remote control receiver

Control knob, SELECT and ENTER
The control knob has two functions:
The remote controls infrared receiver is positioned between the SP1/SP2 and PROCESSOR indicator lights on the left-hand side of the front panel window. Ensure the receiver is in a clear line of sight from the remote control to allow signals to be received.
as a volume control, to adjust the output of loudspeakers
and headphones connected to the amplifier, and of the pre-amp output (PRE OUT). when used in conjunction with the SELECT and ENTER buttons, to customise amplifier settings (see page 8).

A80/P80 6

Recording
With the Arcam A80 it is possible to listen and to record from one source, or to listen to one source while recording another. The record signal is sent to the TAPE output sockets. These sockets are suitable for use with almost any type of recorder (cassette, CDR, MD, VCR, reel-to-reel, etc.). To record the currently selected source, press the SELECT button to enter the menu system. Rotate the Control knob clockwise until the display shows REC OUTPUT. Press SELECT. REC is displayed, followed by the current setting. Rotate the Control knob counter-clockwise until REC SOURCE is displayed. After a few seconds, the display reverts to showing the volume level and you are ready to record. To listen to one source whilst recording another, press the SELECT button to enter the menu system. Rotate the Control knob clockwise until the display shows REC OUTPUT. Press SELECT. REC is displayed, followed by the current setting (for example, REC TUNER). Rotate the Control knob until the desired source is displayed. After a few seconds the display reverts to showing the volume level and you are ready to record.

TAPE button operation.

To play back the recording from a cassette deck attached to the TAPE input, press TAPE. TP followed by a two-letter abbreviation of the record out source is shown on the display (e.g. TPCD). Selecting this input overrides the other source selectors. If the current record out is set to REC SOURCE then the previous selected source is shown on the display. Pressing different source buttons on the front panel only changes the record output. Tape mode can be exited by pressing TAPE again. It is also possible to monitor a recording while it is being made, provided your cassette deck is a 3-head type. To do this, press TAPE. Switching this button in/out allows an A/B comparison between the source signal and the recorded signal.

A80/P80 7

Setting up your A80 amplifier
The A80 allows you to adjust listening settings to suit your taste, and to customise various features of the amplifier to fit your system. Use this diagram to help you navigate through the settings available. The ENTER and SELECT buttons are represented in the diagram by the symbols and respectively. The Control knob is shown as.
Adjusting listening settings
The default display mode is VOLUME, where the Control knob is used to adjust sound level. Press SELECT to enter edit mode and cycle through the other settings: BALANCE, VOL RES, I/P trims, etc. When a setting is selected, press SELECT again and adjust it with the control knob. Press ENTER to fix the change you have made and return to idle (volume) mode.

Menu map

ARCAM A80 (Switch on state)

0. 72(dB)

volume

Adjust

BALANCE
Adjust RES REF RES FINE RES STD

Balance

Balance Once selected, use the Control knob to shift the balance between Left and Right channels. Volume Resolution RES REF, RES FINE or RES STD. Fine and Standard represent different levels of volume control sensitivity. The Reference setting gives absolute increments in 0.5dB steps. Input Trims use the source select buttons and Control knob to set input trims for each source. Input trims are used to compensate for variations in output levels of different source equipment. Processor Mode This mode enables you to adjust the gain of the amplifier. The amplifier can then be used to drive the front left and right speakers in a surround sound system when fed from a separate processor. You can then control the volume of the entire system using the processor, feeding the sound into the TAPE input. Set the gain to match the amplifiers that drive your other loudspeakers. Recording Output This allows you to select the source signal for recording: AV, PHONO, CD, TUNER, AUX or DVD.

vol res

Vol Res

CD TRM 0

i/p trims

I/P Trims

PROC AV FIXED 1.

proc mode

Adjust Proc Mode
AV, PHONO, CD, TUNER, AUX, DVD

rec output

Rec Output

ONVOL OFF ONVOL 1.

max on vol

Max On Vol

NO RESET YES RESET
Maximum On Volume Use the Control knob to adjust the volume setting at switch-on. ONVOL OFF indicates that the feature is not activated. ONVOL 1 (or higher) sets the volume at start-up (in dB). Reset this restores all amplifier settings, including input trims, to their factory defaults.

A80/P80 8

Adjust Reset

Using the remote control

CR-389 Remote Control
The CR-389 remote control gives access to all functions available on the front panel of the A80. It also has controls to operate Arcam CD players, AM/FM tuners and DAB tuners. The remote control transmits Philips RC-5 type codes.
These buttons are used to control tuner functions. Note that the FM/DAB lights indicate into which mode you are switching the remote control. The lights only illuminate for five seconds to conserve battery power. If neither light is illuminated this does not mean that the remote control is not working!

FM DAB

Power/Standby

MENU DISP

(UP and DOWN)
Perform the same function as the buttons on the front panel (see page 6).
Toggles the amplifier between standby mode and full power mode. The power indicator light next to the power button on the front panel is red if the amplifier is in standby, amber while the amplifier is powering up (this only takes a few seconds) and green when the amplifier is powered up.
These buttons allow you to select and deselect the main (SP1) and secondary (SP2) sets of speakers attached to your amplifier (see page 6).
Performs the same function as the ENTER button on the front panel (see page 8).

SELECT

DISP (display)
Cycles through the settings Bright, Off and Dim. Turning the display Off generally gives a slight improvement in sound quality.
Performs same function as the SELECT button on the front panel. It allows you to use the remotes volume switch in the same way you use the control dial on the front panel to adjust various amplifier settings (see page 8). Note that pressing + corresponds to turning the Control knob clockwise, to counter-clockwise.

PHONO AUX TUNER CD

Volume and (mute) Press + to increase volume or to decrease the output volume

of the amplifier. Press to mute the speaker connections and preamp outputs. Both tape outputs and the headphone socket remain active. Mute is disabled either by pressing again, or by adjusting the volume. You can use the remotes volume control in conjunction with the SELECT button to adjust balance and other amplifier settings.

Source selection buttons

These operate in the same way as the source selectors on the front panel of your amplifier.

AMPLIFIER

CD controls
These offer basic controls of Arcam CD players

CR-389

NOTE: Remember to install the two supplied AAA batteries before trying to use your remote control! Do not place anything in front of the IR receiver (on the left of the Control knob), or the remote control may not work. A80/P80 9
Installation: P80 power amplifer

TRIG OUT AUDIO

Connecting to power, loudspeakers and other equipment
Follow the installation instructions for the amplifier on pages 46.

Remote switching

By making a connection from the REMOTE IN socket of the P80 power amplifier to the TRIG OUT socket of the A80 amplifier, you can use the A80 to switch the power amplifier on and off. If configured in this way, the front panel POWER button of the A80 (or the Power/Standby button on the remote control) switches both amplifiers on and off together. This facility allows you to conceal the power amplifier yet still control it. The connecting cable required is a male 3.5mm to male 3.5mm jack lead (stereo or mono) and it is possible to connect several power amplifiers to an A80 by daisy chaining from TRIG OUT of one P80 into the REMOTE IN of the next.

AUDIO IN

Connect this input to the output sockets of your pre-amplifier or the PRE OUT sockets of an amplifier.

MONO LINK

The power amplifier can be adapted to provide two mono loudspeaker outputs from a single input. Pull out the link supplied and use it to connect the L and R AUDIO OUT sockets together. Using one power amplifier per loudspeaker will enable you to bi-amplify bi-wireable loudspeakers. This is particularly beneficial for top quality stereo installations with a separate pre-amplifier, or where amplifiers are provided for the left, centre and right channel loudspeakers in a five speaker Dolby Pro Logic or Dolby Digital system. Contact your Arcam dealer for more information.

Signal detect

The P80 power amplifier features a signal-detecting circuit that automatically switches the unit on when an input signal is delivered to the amplifier. The unit switches into standby approximately 12 minutes after the signal source is switched off. The signal detect feature is disabled by the supplied blank plug, or when a connection from the REMOTE IN socket to TRIG OUT of an A80 is made. Simply remove the blank plug from the REMOTE IN socket if you wish to use this feature.

Daisy chaining

The power amplifier can be connected to further power amplifiers to drive more speakers (e.g. those in other rooms or tri-amplified speakers, etc). Connect the extra power amplifier inputs to the AUDIO OUT sockets on the power amplifier, left to left, right to right.

A80/P80 10

Using your P80 power amplifier

A80 POWER AMPLIFIER

Switches the unit on and off. The light indicates the status of the amplifier. When you switch your amplifier on, the light glows amber for a few seconds, during which time the speakers are disconnected. The light changes to green when the amplifier is ready for use. A red light means the amplifier is in standby mode. The light may flash if a fault has occurred somewhere in the system (the fault type is shown on the front panel display of the A80). You should unplug the amplifier and leave it for a few minutes before reconnecting. If the fault cannot be cleared, unplug your amplifier and contact your Arcam dealer.
These buttons allow you to select and deselect the main (SP1) and secondary (SP2) sets of speakers attached to your amplifier.
NOTE: If both lights are out the amplifier will appear not to work, as all speakers are switched off. If both are on, overloads are more likely if low impedance speakers are connected.

A80/P80 11

Bi-wiring and bi-amping loudspeakers

Before you start

WARNING: Do not make any connections to your amplifier while it is switched on or connected to the mains supply. Before switching on please check all connections thoroughly, making sure bare wires or cables are not touching the amplifier in the wrong places (which could cause short circuits) and you have connected positive (+) to positive and negative () to negative. Always ensure that the volume control on your amplifier is set to minimum before starting these procedures.

Bi-amping your system

The performance of your system can be further enhanced over that achieved with bi-wiring, by extending the principle one stage further to include separate amplification for the low and high frequency drive units in each loudspeaker enclosure. Connect the amplifier to the high frequency (HF) terminals and connect the power amplifier to the low frequency (LF) terminals.

You will need:

Speakers with four input terminals each (as with bi-wiring): these will be marked HF (High Frequency) and LF (Low Frequency). Two amplifiers one of these would be the A80 and the other an Arcam power amplifier (e.g. P80). Loudspeaker cables two pairs of cables per loudspeaker or a suitably terminated cable set (a loom, probably prepared by your dealer and capable of being used for bi-amping in one length). Interconnect cables one pair of high quality interconnect cables.
Bi-wiring your loudspeakers
Bi-wiring improves the sound of your system because it divides the high and low frequency signal currents into separate speaker cables. This avoids signal distortions arising from the high and low frequency currents interacting with one another within a single cable, as in conventionally wired systems.
Speakers with four input terminals each: these will be marked HF (High Frequency) and LF (Low Frequency). Loudspeaker cables two pairs of cables per loudspeaker (which may be joined at the amplifier end if your amplifier has only one pair of output terminals per channel). Or, a suitably terminated cable set (a loom, probably prepared by your dealer and capable of being used for bi-wiring in one length).
How to set up a bi-amped system
1. Remove the terminal links on the rear of your loudspeakers. WARNING: This step is essential or damage to your amplifier may result which is not covered under warranty. 2. 3. Connect the cables as shown in the diagram below, ensuring correct polarity at all times. Use the interconnect cables to connect the PRE OUT sockets of the A80 to the corresponding AUDIO IN sockets of the power amplifier.
How to bi-wire loudspeakers
1. Remove the terminal links on the rear of your loudspeakers WARNING: This step is essential or damage to your amplifier may result which is not covered under warranty. 2. Connect the cables as shown in the diagram below, ensuring correct polarity at all times.
+ R Arcam A80 amplifier + R + L + Right speaker + + + HF LF Right speaker + + HF LF Left speaker + R HF LF

Arcam A80 amplifier

Arcam P80 power amplifier

+ HF + LF

Left speaker
Bi-wiring using one set of connections on amplifier

For further details contact Arcam at:
Arcam Customer Support Department, Pembroke Avenue, Waterbeach, CAMBRIDGE CB5 9QR, England. Telephone: +44 (0)Fax: +44 (0)Email: support@arcam.co.uk

The warranty covers:

Parts and labour costs for two years from the purchase date. After two years you must pay for both parts and labour costs. The warranty does not cover transportation costs at any time.

Problems?

If your dealer is unable to answer any query regarding this or any other Arcam product please contact Arcam Customer Support on +44 (0) or write to us at the above address and we will do our best to help you.

Claims under guarantee

This equipment should be packed in the original packing and returned to the dealer from whom it was purchased, or failing this, directly to the Arcam distributor in the country of residence.

On-line registration

You can register your Arcam product on line at

www.arcam.co.uk

Other languages
A80/PCheck the Arcam website (www.arcam.co.uk) for further languages.

A80/P80 15

PEMBROKE AVENUE, WATERBEACH, CAMBRIDGE CB5 9QR, ENGLAND telephone +44 (0)fax +44 (0)email support@arcam.co.uk website www.arcam.co.uk Issue 1 SH117E

Service Manual

Issue 1.0
A80 Amplifier P80 Power Amplifier
Bringing music & movies to life

Contents List

Circuit description

o A80/P80

Technical specifications Circuit diagrams

o L943AY

Transformers
o L916TX 115/230VAC toroidal o L917TX 100VAC toroidal o L907TX 100VAC frame

Exploded view diagram

Mechanical & packing parts list

o A80 o P80

Circuit board silk screen

Circuit board parts list

o A80/P80 combined

Circuit description.

Power supply.
The mains input to the unit is supplied at SK200 and is filtered the Y Caps and locations C200 /C201 and X cap at location C209, these are in-place to reduce mains born HF interference and to prevent bridge rectifier noise from leaving the unit. The mains select switch at location SW200 works in conjunction with the dual primaries on the 115/230v transformers, the switch allows for the units to be used in territories running a 115v or 230v grid when the switch is set to the 115v position the primary windings are connected in parallel. Fig 1. Fuse value information. Fuse location. FS200 FS201 FS200 (100v) FS201 (100v) FS202 (s.m standby 9v a.c rms) FS203 (D.C inline) FS204 (D.C inline) Value. T2.5A (20mm) T2.5A (20mm) T3.15A (20mm) T3.15A (20mm) T500mA (s.m) T2.0A (20mm) T2.0A (20mm) Fig 2. Supply identification and related components. Supply + 45v L + 45v R - 45v L - 45v R - 38v VFD +15v (A) - 15v (A) + 5v (A) +4.8 (D) Related components Left power amp positive rail. Right power amp positive rail. Left power amp negative rail. Right power amp negative rail. Display cathode rail derived from 45v(R) IC 300, 301, 302, 303, 304, 305, 306, 307, 308, 309 also including the input clamp diodes all within the pre-amp stage. IC 300, 301, 302, 303, 304, 305, 306, 307, 308, 309 also including the input clamp diodes all within the pre-amp stage. IC309 volume control Input trigger stages, signal detect IC700, delayed off IC703, IC701. Main micro IC600.Remote pickup, Master reset IC601, Over current detect-AC detect thermal cut-out IC600 3.3v~ filament supply.

Fil 1/Fil 2

Pre-amp.
The A80 Pre-amp has inputs for Phono, Aux, CD, Tuner, AV, DVD and Tape. All inputs except Phono have a simple resistor-capacitor 340Khz low pass filter to remove any unwanted high frequency noise from the input signal/local area, a pair of diodes on each input connected to the +15/-15v rails prevent damage to the CMOS input switching chips at locations IC300 and IC301, if any offset is seen at the input the switching chips on a given input we may suspect the failure of one of the input diodes. Fig 3. Logic status of IC302 and 303 (switching chip).

Low= 0V High=4.8 (Cmos).

The standby Transformer TX200 continuously powers the digital circuitry (+4.8v(D)) when power is connected to the unit, this supply powers the Micro via a regulating circuit based around regulator REG 201 special mention should be made of fuse FS202 as any interruption to this supply will render the unit completely lifeless and as such this circuit should be checked before inspecting any other areas of the board. We will see that the main power transformer TX200 supplies a separate secondary winding for the +15 and 15v analogue regulation stages via the two fuses at board locations FS203 and FS204, the failure of either of these fuses will cause the op-amps connected to the regulated rails to swing D.C. The regulator at location REG 200 regulates the +15 rail and intern supplies the +5V(A) analogue supply via the reference Zener at location DZ200 and drive transistor TR200. The high level power amp A.C supplies arrive at Con204 as a 4-wire supply this allows us to implement a dual bridge network circuit with 4 individually smoothed D.C rails these are labelled as +45(L), +45(R) and -45(L), -45(R) we pull a 38v rail from this point to form the VFD cathode bias voltage via R211 Con205 delivers the 3.3 V A.C supply to the main board and then onto the display VFD via R203 (2R2 f.u).

Input. Phono Aux CD Tuner AV DVD Tape

A0 (pin 1)

Low Low High Low High Low High

A1 (pin 16)

Low High High Low Low High Low

A2 (pin 15)

Low Low Low High High High Low
The outputs of IC300 (L) and IC301(R) can be seen on pin 8 as a current signal and such this can not be viewed via CRO although a 100 ohm resistor inline with the scope probe may yield some results, from here we drive into line drive op-amp IC307 (L) and IC308 (R) signal can be seen at the output pin (1) and travelling into the volume control chip (IC309) on pins 16 (L) and 9 (R) the output from the Volume control is driven into IC307 at pin 6 (L) and IC308 pin 6 (R) and seen again on pins 7 on both IC307 and IC308. After the Con 302 and Con 303 we drive directly
Into the power amp stages but from this point we can configure the unit as a separate Pre amp/Power amp by moving the jumpers to the pin 2 and 3 of Con 304 and Con 305, and then remove the jumpers at Con 302 and Con 303 this may also be of use when fault finding as we can effectively isolate the and D.C offset/distortion problems coming from the Pre amp stage to the power amp stages and test these stages as a separate entity. The Pre amp power up mute and power down mute is controlled by the relay at location RLY300 A/B the relay also triggers to mute the switching noise when switching between inputs (see micro control/protection and display section).
The transistors found at locations TR400 and TR401/TR402 form the PNP Wilson mirrors and TR416 and TR411/TR417 form the Wilson NPN current mirrors, emitter degeneration is provided by R405, R406 (+) and R407, R408 (-). R415 and R416 decouple the current mirror stages from the main power supply stages to allow the bootstrap circuit to operate this circuit is formed by C423 and C424 and the Metal film 1 watt resistors at locations R452/R453, the boots strap is provided to allow the output stage rails to go up and down slightly with the output signal to the loudspeaker, this enables the driver stage to fully saturate the output drivers giving the greatest output and the best thermal efficiency. TR405 and TR407 are the Pre-drivers, TR412/TR414 and R411/R434 provide a current limit of about 30mA under fault conditions. R423 and R428 loosely couple the outputs of the output drivers to the inputs of the SAP output devices, this allows the output devices inbuilt temperature sensing diodes to accurately control the quiescent current of the output drivers as the temperature varies, C425 and C405 ensure that both halves of the output stage receive an equal A.C component. The output transistors are TR413 and TR415 these are specially designed for audio power use Sanken SAP15N and SAP15P devices they provide a inbuilt 0W22 thick film power resistor and temperature sensing diodes that track the VBE versus temperature characteristics of the power transistors allowing for accurate control of the quiescent current. R459 and C427 form the Zobel network which is provided to ensure that the amplifier see a constant and resistive load at high frequencies C421 locally couples the High frequency and signal grounds together at the input stage for the same reason. Any signs of burning or scorching of R459 will indicate that the unit amplifier channel(s) have been running unstable or oscillating. The Bias should be set for minimum distortion (THD+N) using a 0.5v rms 20 Khz sine wave into the CD input with the amplifier set for full gain, the absolute maximum level of Bias acceptable is 22mV measure across CON401 (L) or CON 501 (R) the adjustment is made using RV400 and RV500 we set the bias at the factory using an extremely accurate Audio Precision-audio analyser. If you do not have access to a distortion level meter capable of 0.05% or better accuracy you may be able to rough set the amplifier to a typical reading of 15mV (at cold switch on).

DC offset (left or right) Short circuit fault (over current) Thermal fault (heatsink L or R) Multiple protection lines triggered
The Micro has direct control over all internal relays for protection and output control, the speaker relay control lines can be seen on the diagram as SPKR1 for SP1 and the SPKR2 for SP2 outputs, these lines switch High to engage the relay. The A80 pre-amp relay should disengage when switching inputs to prevent any chip switching noise from leaving the pre-amp stage the control line can be seen on R385 and switches High to engage the relay. Signal Detect and Delayed off P80 only. Signal detection is achieved by amplifying the signal present at the power amp inputs by a large amount using two channels of a quad op-amp at location IC700 A/B the outputs of this op-amp are summed by a non-inverting comparator formed using the two remaining op-amp channels these will produce a active High reset pulse at the output pin 14. When mains is plugged into the P80, the master *Reset line goes low and the 0.38Hz clock starts ticking. The *Reset pulse resets the latch effecting a HIGH *Q output and thus a LOW circuit output. When the signal detect Latch and Counter Reset go HIGH (an input is detected), the *SD latch input is driven LOW by the inverter and *Q goes LOW the circuit output then goes high switching the Amplifier on.
Not fitted Fit (NF for pre/pwr) 1&2 (2&3 for pre/pwr) 1&2Phono;(2&3 Aux2) Factory set Fit (NF to program) Fit (NF to program) Not fitted Not fitted
Fitted Not fitted Not fitted Not fitted Factory set Not fitted Not fitted Fit (0.5mv), NF (2mV) 1&2 (12 mins; 2&3 45mins).
Fig 9. Major components pin identification.

74HC14

ZDT 758/ZDT 6758
1=Collector 1 2=Collector 1 3=Collector 2 4=Collector 2 5=Emitter 2 6=Base 2 7=Emitter 1 8=Base 1

TLO 72 FMMT 497/597

NJM2114

BC849/BC859

DG408DY
1=Base 2=Emitter 3=Collector

BAV99 Diode package

1=Anode 2=Cathode 3=Common connection
74HC00D LM431 Adjustable Zener shunt regulator
Technical Specifications.
Continuous Power output Both channels driven 8 ohms 20 Hz 20 kHz Single Channel driven 4 ohms 20 Hz 20 kHz Distortion 8 ohms at 80% power output 1Khz = 65 Watts = 80 Watts = 0.008%
Input stage specifications. RIAA input stage sensitivity (M.M) Line input sensitivity Input impedance = 2.5 mV = 630 mV (Default) = 22k ohms
Signal to noise ratio CCIR weighted (2 volt input) = 105dB
Pre-amp output specifications. Nominal output level Output impedance = 610 mV = < 3 ohms
ITEM100 ITEM101 ITEM102 ITEM103 ITEM104 LS100 Left Outputs G P PRECISION

L943PB F205 8M101 E802AP F232
Blank PCB Diva A80 Amp Tape D/Sided 12MM X 70MM DS Polyester 4965 Earth Lead Assy 75MM Pad Damping 15x6x3MM Sorbothane 13/16 inch O-Ring Placed between VFD and PCB; NF ON P80 Soldered to SKT200 Placed on output relays Rubber O-Rings fitted over main power supply caps

ANNOTATION

+45V_L Power Amp Left L943C4_5.1.SCH +45V_L FIX100 Dia 3.5mm FIX101 Dia 3.5mm 1 P101 0V_FB_L C101 100N 50V 0805 0V(D) 0V_FB_L FIX102 Dia 3.5mm FIX103 Dia 3.5mm FIX104 Dia 3.2mm PRE_OUT_L VIPROT_L OUTPUT_L 0V_LS_L 0V_HF_L -45V_L -45V_L 0V_HF_L 0V_LS_L
R100 5R6 2W CF RLY100A Omron G5Z-2AE RLY101A Omron G5Z-2AE
GENERAL NOTES This is the Master Schematic for A80 (L943AY) and P80 (L944AY) PCB assemblies. Any changes to the schematics in this document must be reflected in the relevant child documents. When generating BOMs for L943AY or L944AY, ensure that the relevant components are fitted or not fitted (those with "NF" or "FIT" in the nearby text). These schematics follow a simple heirarchy scheme. Sheet symbols on the top sheet represent a child or sub-sheet. Net labels on sub-sheets are local or specific to that sheet. Ports on the sub-sheets connect to sheet entries on the parent sheet, where they are connected together. Primary power nets are denoted by type in parenthesis, e.g. 0V(D). Secondary nets are denoted by underscores, e.g. 0V_LS_L.
RLY100B Omron G5Z-2AE RLY101B Omron G5Z-2AE

L100 2U2

Power Supplies
LS101 Right Outputs G P PRECISION
+45V_R Power Amp Right L943C5_5.1.SCH Power Supplies L943C2_5.1.SCH 9VRMS +4.8V(D) PWR_ON +45V_R +45V_L 0V(D) 0V_LS_L 0V_HF_L 0V_FB_L 0V(SIG) 0V(SIG_2) 0V_FB_R 0V_HF_R 0V_LS_R 0V(PSU) 9VRMS +4.8V(D) +45V_R +45V_L 0V(D) 0V_LS_L 0V_HF_L 0V_FB_L 0V(SIG) 0V(SIG_2) 0V_FB_R 0V_HF_R 0V_LS_R +45V_L +4.8V(D) 0V(D) -45V_L -45V_R -38V_VFD FIL_1 FIL_2 +15V(A) +5V(A) -15V(A) +45V_L +45V_R +4.8V(D) 0V(D) 0V(SIG) -45V_L -38V_VFD FIL_1 FIL_2 TAPE_0 TAPE_1 TAPE_2 VOL_SCLK 0V(SER) VOL_SDATA LISTEN_0 LISTEN_1 LISTEN_2 0V(D) *PRE_MUTE VOL_*CS 9VRMS LISTEN_0 LISTEN_1 LISTEN_2 +15V(A) +5V(A) +4.8V_D_PRE *PRE_RLY 0V(SIG) 0V(SIG_2) -15V(A) PRE_OUT_L PRE_OUT_R LISTEN_0 LISTEN_1 LISTEN_2 +15V(A) +5V(A) 0V(SIG) 0V(SIG_2) -15V(A) A80/P80 Protection & Micros L943C6_5.1.SCH OUTPUT_L OUTPUT_R +45V_L +45V_R +4.8V(D) 0V(D) 0V(SIG) -45V_L -38V_VFD FIL_1 FIL_2 TAPE_0 TAPE_1 TAPE_2 VOL_SCLK 0V_SER VOL_SDATA LISTEN_0 LISTEN_1 LISTEN_2 +4.8V_D_PRE 0V_D_PRE *PRE_MUTE VOL_*CS VIPROT_L VIPROT_R 9VRMS REMOTE_P REMOTE_N TRIG_IN SPKR2_ON SPKR1_ON PWR_ON 0V_FB_R +45V_R PRE_OUT_R VIPROT_R OUTPUT_R 0V_FB_R 0V_LS_R 0V_HF_R -45V_R -45V_R 0V_HF_R 0V_LS_R

-> R515 220R 0W25 MF R505 47R 0WR500 22K 0WP501 TR500 BC859B SOT-23 R506 47R 0WP508 TR501 BC859B SOT-23 C508 22UF 63V YK

+45V_R

0V_HF_R
D500 BAS16 SOT-323 C504 10N 100V 0805

0V_FB_R

D505 1N4003 DO-41
P509 TR502 FMMT597 SOT-23 R517 1K0 0WC502 P505 100P 100V 0805

TR512A ZDT6758 SM-8 R522

P507 NF R519 470K 0W125 0805
DZ500 22V BZX84C SOT-23 Q500
R536 10K 0WP513 TR503 FMMT597 SOT-23 R542 4K7 0WP514 R501 10K 0W125 0805
NF C500 P502 47P 100V 0805 TR508 FMMT497 SOT-23 C510 100UF 25V YK DZ504 BZX84C 15V SOT-23 C517 100N 50V 0805

NF R509 1K0 0W125 0805

TR507 FMMT497 SOT-23

P510 100R 0W125 0805

P511 R531 22R 0W125 0805

VIPROT_R

P532 R538 10K 0WD502 BAS16 SOT-323 R526 P530 R556 100R 0WP531 TR510 FMMT497 SOT-23 R544 10K 0WC526 10UF 50V YK

C522 R520 1M0 0W125 0805

TR512B ZDT6758 SM-8 C523 100UF 100V YK R523 220R 0W25 MF TR513

DZ506 BZX84C 3V9 SOT-23

Q503 R543 4K7 0W125 0805

0V_FB_R 5 P520

IC500B TL072CD SO-8 BAV99 SOT-23

R552 1K0 1W CF

P527 R524 100R 0WR532 22R 0WC512 100UF 25V YK

R525 100R 0W125 0805

SAP15NY SAP RV500 220R LIN
330R 0WR511 1K0 0WR554 100K 0W125 0805
TR509 FMMT497 SOT-23 D506 1N4003 DO-41
D501 BAS16 SOT-323 NF R558 18K 0W25 MF R547 R549 820R 0W25 MF R550 820R 0W25 MF

NF R551

CON501 HARWIN M20-2

PRE_OUT_R

DZ502 BZX84C 3V9 SOT-23 DZ503 BZX84C 3V9 SOT-23
1K0 0WR502 22K 0WC516 470P 100V FKP2
IC500A TL072CD SO-R545 22R 0W25 MF R546 22R 0W25 MF

OUTPUT_R

820R 0W25 MF R548 820R 0W25 MF

CON500 HARWIN M20-973

R540 4K7 0WR503 10K

R537 5K6 0W125 0805

C519 100N 50V 0805

C511 100UF 25V YK

REF500

R553 1K0 1W CF

C525 10UF 50V YK

C505 10N 100V 0805

R529 100R 0WTR515 R514 1K0 0WR557 330R 0WP549
C513 100UF 25V YK R535 22R 0WR530 P551 100R 0WR541 10K 0W125 0805

R559 5R6 2W CF

D507 1N4003 DO-41 TR506 FMMT597 SOT-23 P552 D503 BAS16 SOT-323 C527 100N 100V MKS2
0WP540 Q509 R539 22K 0WLM431AIM3 SOT-23
C524 100UF 100V YK R528 220R 0W25 MF
C514 100UF 25V YK DZ505 BZX84C 15V SOT-23 C506 10N 100V 0805 P539 C515 100UF 25V YK NF C501 P533 NF R512 1K0 0WR560 330R 0WR513 1K0 0W125 0805
TR514A ~1.6V ZDT758 SM-8 R533 22R 0W125 0805

0V_LS_R

TR504 FMMT597 SOT-23

C520 100N 50V 0805

TR505 FMMT597 SOT-23 R527 P544 100R 0WNF R521 470K 0WR534 22R 0WP546

DZ501 22V BZX84C SOT-23

P542 R518 1K0 0WP556 C503 P538 100P 100V 0805

TR514B ZDT758 SM-8

TR511 FMMT497 SOT-23 0V_FB_R P558 TR517 BC849B SOT-23 P559 R508 47R 0W125 0805
R504 22K 0WTR516 BC849B SOT-23 P554 R507 47R 0WD504 BAS16 SOT-323

D508 1N4003 DO-41

C507 10N 100V 0805
R516 220R 0W25 MF C509 22UF 63V YK

-45V_R

A80/P80 - Power Amp Right
Filename: Notes: L943C5_5.1.SCH

ITEM500

L943C5

A80 ITEMS

+4.8V(D)_DISP
C802 100N 50V 0805 R802 10K 0WR803 10K 0WQ802 TR801 BC849B SOT-23 (Fitted on A80 only)
COMMON ITEMS TO MAIN PCB - SHEET6
CON800 MOLEX 52044 REMOTE_DISP C825 1N0 100V 0805 Q803 Q804 Q805 Q806 Q807 Q808 Q809 Q810 Q811 Q812 Q813 Q814 Q815 Q816 Q817 Q818 Q819 (Fitted on both A80 & P80)

P80 ITEMS

(Fitted on P80 only)

0V(D)_DISP

P803 P802 R801 10K 0WTR800 BC849B SOT-23
LED806 SM RED SML-010 P801

330R 0W125 0805

MOUNTED UNDER IR EYE
NOTE: All resistor / small capacitor combinations are placed near flexfoil connector for EMC filtering

10K 0W125 0805

CHAS_DISP 0V(D)_DISP

PIC-26043TM2

-38V_VFD
R810 0R0 0WFIX800 Dia 3.2mm R811 0R0 0WR812 0R0 0WR813 0R0 0WR850 0R0 0WR814 0R0 0WR815 0R0 0WR816 0R0 0W125 0805
330R DZ800 BZX84C 22V SOT-23 DZ801 BZX84C 5V6 SOT-23 R851 10K 0WR852 10K 0W125 0805
R855 1K0W125 C812 10UF 50V SM C813 10UF 50V SM C800 10UF 50V SM C803 100N 50V 0805 P805

VFD LOCATORS

R807 R808 0R0 0R0 0W0WC801 10UF 50V SM DISP800

CATHODE BIAS

330R 0805

R853 100R 0W125 0805

R854 100R 0W125 0805

CHAS_DISP

C804 100N 50V 0805 C830 10N 100V 0805 C831 10N 100V 0805 C826 1N0 100V 0805 C827 1N0 100V 0805 C828 1N0 100V 0805

Q820 C806 100N 50V 0805

(used to tie down track at display side)

Q877 Q873

R827 0W125

R828 0W125

R829 0W125

C835 10UF 50V SM

C836 10UF 50V SM
C837 47P 100V 0805 C838 47P 100V 0805

FIX808 Dia 3.2mm

TR806 FMMT597 SOT-23 AH1016A

-25V(FL)_A80

VFD_SDO / *SP1_SW DISP VFD_SDATA / *SP1_LED DISP VFD_SCLK / *PWR_BTN DISP

R817 0R0 0W125 0805

0R0 0WR819 0R0 0WVFD_SCLK / *PWR_BTN DISP
0V(D)_DISP -25V(FL)_A80 +4.8V(D)_DISP
C816 100N 50V 0805 P800 C817 100N 50V X800 4.00MHz 1 D802 BAS16 ENTER SOT-323 SW804 SELECT SW806 PHONO SW808 CD SW810

R821 0R0 0W125 0805

FIX801 Dia 3.2mm FIX802 Dia 3.2mm FIX803 Dia 3.2mm FIX804 Dia 3.2mm FIX805 Dia 3.2mm FIX806 Dia 3.2mm R822 0R0 0WQ890 C823 100N 50V 0805 R823 0R0 0WR824 0R0 0W125 0805
SIL-Q885 C818 100N 50V 0805

Q886 C819 100N 50V 0805

Q887 C820 100N 50V 0805

Q888 C821 100N 50V 0805

Q889 C822 100N 50V 0805
Q874 Q875 Q881 SP1 SW805 R836 330R 0WR835 330R 0WR834 330R 0WD801 BAS16 SOT-323 SP2 SW807 AV SW809 TAPE SW811

LED805 5mm GRN LED 5mm

LED804 5mm GRN LED 5mm

LED803 5mm GRN LED 5mm

A80 & P80 Display Circuitry
Filename: Notes: L943C8_5.1.SCH
None to this sheet. Remove EMC can from around IEC inlet. Display snapoff fixing holes reduced to 3.2mm None to this sheet. PCB change. LEDs, BIAS & DOCUMENTATION CHANGE NO CHANGE TO THIS SHEET

PROCESSOR_LED

A & R Cambridge Ltd. Pembroke Avenue Waterbeach Cambridge CB5 9QR

L943C8

ITEM700

NF ON A80 ANNOTATION

R724 22K 0WR725 22K 0W125 0805

TRIGGER OUT

TR700 BD179 TO-126 R715 P708 R726 22R 0W100R 0WP707

TR701 BC849B SOT-23 Q709

SKT700 HOSIDEN HSJ

~13.5V @ 30mA max

C700 100N 50V 0805 C710

R727 10K 0W125 0805

C720 10UF 50V YK DZ700 BZX84C 15V SOT-23

GND2 GND1

P80 TRIGGER IN

(NF ON A80)

REMOTE_P

REMOTE_N

NF ON P80 C705 100N 50V 0805 <-------- Vin C701 100N 50V 0805 R706 0R0 0WR738 2K2 0WR728 10K 0WD704

+4.8V(D)

Vout=0.82Vin
Q715 DZ701 BZX84C 4V7 SOT-23

R707 4K7 0W125 0805

SOT-23 BAT54S

0V_CHASS

NF ON A80 R652 33K 0W125 0805
0.38Hz OSCILLATOR (FOR P80 AUTO-OFF)
IC601F NF ON A80 R624 P645 10K 0W125 0805
TR604 FMMT597 SOT-23 P624 R651 22K 0WQ632 DZ602 BZX84C 4V7 SOT-23 R663 0R0 0WR649 3K3 0WNF ON P80 R623 10K 0WD608 BAT54S SOT-23 NF ON A80 C621 100UF 25V YK

74HC14 SO-14

0.38Hz_CLK (To Sheet 7)
0V(D) 0V(SIG) 0V(SIG) -38V_VFD -45V_L -45V_L 0V(D)
NF ON A80 R602 0R0 0W125 0805

IC600E

R634 100K 0W125 0805

C601 100N 50V 0805

NF ON P80 -38V_VFD C600 100N 50V 0805

74HC00D SO-14

Q613 BAV99 SOT-23 BAV99 SOT-23 BAV99 SOT-23 P627 TR605 FMMT597 SOT-23

A80 MICRO

(NF on P80)
R625 4K7 0WP646 P647 EEPROM_SDATA EEPROM_SCLK R665 4K7 0W125 0805

R635 100K 0W125 0805

PREAMP CONTROL LINES
(RESISTORS NF ON P80) Q602 R600 1K0 Q642 Q600 Q601 VOL_*CS_u *PRE_MUTE_u +4.8V_D_PRE

0V(D) -45V_L

IC604A 5 SDA 6 SCL
VOL_SCLK_u VOL_SDATA_u VOL_*CS_u *PRE_MUTE_u LISTEN_2_u LISTEN_1_u LISTEN_0_u TAPE_2_u TAPE_1_u TAPE_0_u +4.8V_D_PRE

3 AAA0

24C02 SO-8
VOL_*CS *PRE_MUTE +4.8V_D_PRE 0V_D_PRE
RTH600 PTC 110DEG PTC P617 R638 680R 0WP618 TR602 FMMT597 SOT-23 P619 R645 4K7 0W125 0805

THERMAL CUTOUT

VFD_CS *PWR_LED_RED *PWR_LED_GRN VFD_SCLK / *PWR_BTN VFD_SDO / *SP1_SW VFD_SDATA / *SP1_LED
+4.8V(D) 0V(D) +4.8V(D) 8
C608 100N 50V 0805 IC604B

TO SHEET 3

TAPE_0 TAPE_1

P601 R611

10K R612 10K
Q603 Q604 Q605 Q606 Q607 Q608 Q609 Q610 Q611
TAPE_0_u TAPE_1_u TAPE_2_u VOL_SCLK_u Connect near IC602

P602 0WP603 R613 10K

DZ600 BZX84C 3V9 SOT-23

0WR614 1K0

TAPE_2 VOL_SCLK 0V_SER
P606 0WR615 1K0 P604 0WP605 R626 10R 0W125 0805
Q614 VOL_SDATA_u LISTEN_0_u LISTEN_1_u LISTEN_2_u
VOL_SDATA LISTEN_0 LISTEN_1
P609 R618 10K 0WP607 R616 10K 0WR617 10K P608 0W125 0805

R640 33K 0W125 0805

C603 100N 50V 0805

LISTEN_2

2K2 R646 0W125 4K0W125 0805
74HC00D SO-14 *NMI R637 100K 0WR631 10K 0W125 0805

DZ603 BZX84C 4V7 SOT-23

+4.8V(D) +45V_L +45V_L +45V_R +45V_R +4.8V(D) +4.8V(D) 0V(D) 0V(D) GND 7
IC601G R629 47R 0WC602 100N 50V 0805 C619 100UF 25V YK C620 100UF 25V YK

0V(D) +45V_R

P600 RTH601 PTC 110DEG PTC P620 R639 680R 0WP621 TR603 FMMT597 SOT-23 P622 R647 4K7 0W125 0805
NC NC P14/IRQ0 P15/IRQ1 P16/IRQ2 P17/IRO3/TRGV PB4/AN4 PB5/AN5 PB6/AN6 PB7/AN7 PB3/AN3 PB2/AN2 PB1/AN1 PB0/AN0 NC NC

14 P613

IC600C

DZ601 BZX84C 3V9 SOT-23

8 Q638

DC_OFFSET THERM

*PWR_LED_RED *PWR_LED_GRN
RS232_RX RS232_TX Fit jumper to re-program CON602 HARWIN M20-973

DRAWING NOT TO SCALE

330MM 230MM

3.2Vac WINDING PRIMARIES

SCREEN WIRE

PRIMARY

SECONDARY
GREY BLACK WHITE BLUE ORANGE BLUE ORANGE WHITE WHITE

115V ac

B: 125mm max (may have 5mm 'bulge' for leadouts & sleeves)

BLACK ORANGE

LEADS EXIT NEAR TOP
17Vac @ 100mA* 17Vac @ 100mA*

A: 55mm max

Mechanical Specification --------------------------------------------------12. Primary wires self-ended and individually sleeved, then sleeved together. Secondary wires self-ended and individually sleeved. Low power secondary centre tap to share common sleeve. Use PVC sleeving. 13. Primary/Secondary leadout separation to be minimised. 14. Product is for hi-fi audio; hum must be minimised. 15. All wire lengths are +20, -0 mm. All wires stripped 8 +/-2mm and tinned.

3.2Vac @ 55mA*

GREEN/YELLOW Interwinding Screen
* - wire diameter at least 0.4mm

TEST CIRCUIT

GREY +Vout BLACK + WHITE GBU8D 8A 200V

TEST SPECIFICATIONS

OUTPUT WAVEFORM
(Approximate Test Circuit DC output voltage with ripple)
Input Voltage (series primaries)

6800uF 63V Load

230V 6.0A 41 +1.5/-0 V -

265V 6.0A 100mA 63V

Peak Voltage Trough Voltage 0V (Black + White)
On-Load Current Min On-Load Trough Voltage Off-Load Current Max Off-Load Peak Voltage

6800uF 63V

DiVA A80 Power Transformer
Filename: Notes: L916TX_1.0.Sch

03_E059

ECO No. Contact Engineer: Travis Pierce Contact Tel: (01223) 203 200

21 Feb 03

DATE 21-Feb-2003

Production Issue

L916TX
Transformer Specification for 100V 50/60Hz mains transformer (for audio). Arcam Part Number L917TX. To standards BS415 / EN60065 / Class I / EN60742 / UL506. All solid copper leadout wires to be insulated and colour coded with UL PVC105 sleeving. C Material Safety Specification --------------------------------------------------1. Winding Wire to be Grade 2 (130 rating) to BS 60317-4 1995. C 2. Mylar Polyester Insulator Rated to 130 C. Electrical Specification --------------------------------------------------3. Transformer to have dual 100V primaries to allow parallel operation with 100V input. 4. Transformer input voltage range as follows: 100V -15% +15% (85V to 115V) 5. Transformer to have 2 high-power secondary windings as shown in the adjacent drawing. 6. Loaded DC voltages specified at 100V AC in (with transformer primaries in parallel). 7. Centre-tapped secondary windings to have a full wave (4 diode) bridge to produce dual polarity DC rails; high power winding output voltage to comply with test specifications given (see Test Circuit and Test Specifications at right). 8. Windings to be evenly spaced with minmal gaps; magnetic radiation should be minimised. 9. Max core flux density 1.5T at nominal rating (referred to M4 core material; see 14 below). 10. Core must not saturate at 20% over nominal primary voltage. 11. Temperature rise to be less than 60 at 30% duty cycle (referred to 100V C input voltage and On-Load current). 120MM 140MM 160MM BLUE HIGH POWER SECONDARIES TOP VIEW 17Vac WINDINGS

100V ac

Input Voltage (parallel primaries)

100V 6.0A 41 +1.5/-0 V -

115V 6.0A 100mA 63V
100V DiVA A80 Power Transformer
Filename: Notes: L917TX_1.0.Sch

03_E118

17 April 03

DATE 17-Apr-2003

PRODUCTION RELEASE

L917TX

27 x3 2

17 x25 14

AROUND PRIMARIES 7

27 xx2

x28 32

5 xINTO SUB-PANEL

6 INTO CONNECTOR ON PCB

34 x3 ONTO LED'S

27 xx8
A80 Mechanical and packing parts list
Part No E119AY E139AY E83001 E869PM E879PM E891PM E896PM E897PM E917HK E920MC E954MC E956MC HA3V10A HA3V10B HA4A12B HA5K60A HA5L20B HA6K55A HE6V06B HF4V09B HJ3A00F HJ4A00A HJ4C00D HJ9A01E HL4SB HL5EB K5406 L822CA L933CA L916TX L917TX L943AY E845CPB HA4V06B E189AYB E820AP E190AYB E855MC E917PM E871PM E878PM E827SP Item No Description GENERAL MECHANICAL PARTS 4 Diva A80 Rear Panel And Silk Screen Assembly 5 A80 Chassis Assembly 7 Gasket Transformer M01/Button Tact Switch Power Diva 9 Foot Black Diva 11 Knob A80 Volume & DT81 Selector 12 Button DT81 (MODIFED SHANK) Select Button 13 Button DT81 Confirm Button (MODIFIED SHANK) 14 Heatsink Diva A80 Amp - Using E908EX, ADiva A85/P85 Heatsink Clamp 16 Koolpad O/P Device Diva A80 Used ON Heatsink 17 Clamp A80 Transistor 20 M Screw Torx M3x10MM ST ZP 21 M/C Torx M3X10 Black (500) 22 M Screw Pan Supa M4x12MM ST BLK 23 Bolt Hex HD M5x60MM ST ZP 24 M/C Hex HD. Bolt M5-0.8X20MM Steel - Zinc Black Passivate 25 Bolt Hex HD M6x55MM ZP 26 Screw Sftp Torx No.6x6MM BLK 27 Screw Self-Tapping-Sems NO.4 X 9MM Pan Torx-Slot Steel Zinc-Plate BLK 28 M3 Hex Nut Nyloc 29 Nut M4 Full ST ZP 30 Nut M4 Waisted BR SC 31 Hex Half Nut MWasher M4 Int Shakeproof BLK 33 Washer M5 ST BLK 34 Sleeve For Light Pipes 35 Cable Flat Flex 22WAY 300MM Way Amp CT 100MM 37 115/230 VAC Toroid transformer VAC only Toroid transformer A80 Main cct board & Display cct board PCB Assembly BLACK CASE PARTS 2 Cover Black DiVA A80/PM Screw Torx M4x6MM ST BLK 1 DiVA Black A80 Fascia Complete Assembly Made up of the following parts :Pad Adhesive Diva DT81 Display Window Front Panel Assembly Black Diva A80 Diva Black End Cap Low Display Window For Diva A80 Lightpipe Power Diva Lightpipe Power Surround Diva Sub-Panel Diva A80 Amp SILVER CASE PARTS Cover Silver Diva A80/P80 M Screw Torx M4x6MM Stainless Steel DiVA Silver A80 Fascia Complete Assembly Made up of the following parts :Pad Adhesive Diva DT81 Display Window Front Panel Assembly Silver Diva A80 Diva Silver End Cap Low Display Window For Diva A80 Lightpipe Power Diva Lightpipe Power Surround Diva Sub-Panel Diva A80 Amp PACKAGING MATERIAL Diva A80 Integrated Amplifier Carton Label Remote Control Handy 3 Diva Series CR389 Handbook Diva A80/P80 Amplifier Multi One-Piece inner printed DiVA Carton with Integral Partition Single generic DiVA End Cap Blanking Plug For 4MM Binding Post Single heavy DiVA right hand End Cap

A80 Default Jumper Settings (circled on drawing): CON300, CON301 NOT FITTED CON302, CON303 FITTED CON304, CON305 PINS 1 & 2 CON306, CON307 PINS 1 & 2 CON400, CON500 BIAS SET (AT ARCAM) CON601 FITTED (NOT FITTED TO PROGRAM A80) CON602 NOT FITTED (FIT TO PROGRAM A80) CON700, CON701 NOT FITTED CON702 NOT FITTED
P80 L944AY_5.0.0 ASSEMBLY DRAWING
Insert IC socket IC603-1 into PCB for soldering. Insert programmed IC603 into socket.
Rubber 13/16 inch ID O-rings to be placed around main power supply capacitors C228, C229, C230 and C231. O-rings to be situated midway between PCB and top of cap. One whole sorbothane piece to be fitted to top of each of output relays RLY100 and RLY101.
P80 Default Jumper Settings (circled on drawing): CON300, CON301 FITTED CON302, CON303 NOT FITTED CON304, CON305 NOT FITTED CON306, CON307 NOT FITTED CON400, CON500 BIAS SET (AT ARCAM) CON601 NOT FITTED CON602 NOT FITTED CON700, CON701 FITTED CON702 PINS 1 & 2
A80 Amplifier main/display cct board L943AY issue 5.1 P80 Amplifier main/display cct board L944AY issue 5.1
Designator C101 C200 C201 C202 C203 C204 C205 C206 C207 C208 C209 C210 C211 C212 C213 C214 C215 C216 C217 C218 C219 C220 C221 C222 C224 C225 C226 C228 C229 C230 C231 C300 C301 C302 C303 C304 C305 C306 C307 C308 C309 C310 C311 C312 C313 C314 C315 C316 C317 C318 C319 C320 C321 C322 C323 C324 C325 C326 C327 C328 C329 Part 2J410 2K233 2K233 2K233 2K233 2KA447 2KA447 2KA447 2P622 2P622 2D422 2J410 2J410 2N622 2J410 2J410 2N810C 2N810C 2N710 2N710 2N710 2N710 2KA410 2J410 2N810 2N810 2N810A 2N833C 2N833C 2N833C 2N833C 2JA310 2JA310 2JA310 2JA310 2JA310 2JA310 2JA310 2JA310 2JA310 2JA310 2JA310 2JA310 2JA310 2JA310 2JA310 2JA310 2JA310 2JA310 2JA310 2JA310 2DA147 2DA147 2DA147 2DA147 2DA147 2DA147 2DA147 2DA147 2DA147 2DA147 Description Capacitor SM 0805 X7R Ceramic 10% 50V 100N Capacitor X1 Y2 Rated Ceramic 7.5mm Pitch 3N3 250V Capacitor X1 Y2 Rated Ceramic 7.5mm Pitch 3N3 250V Capacitor X1 Y2 Rated Ceramic 7.5mm Pitch 3N3 250V Capacitor X1 Y2 Rated Ceramic 7.5mm Pitch 3N3 250V Capacitor Boxed Polyester 5mm Pitch 5% 100VDC 470N Capacitor Boxed Polyester 5mm Pitch 5% 100VDC 470N Capacitor Boxed Polyester 5mm Pitch 5% 100VDC 470N Capacitor Radial Electrolytic Oscon SG 22UF 20V Capacitor Radial Electrolytic Oscon SG 22UF 20V Capacitor X2 Boxed Polypropylene 22.5mm Pitch 275V 220NF Capacitor SM 0805 X7R Ceramic 10% 50V 100N Capacitor SM 0805 X7R Ceramic 10% 50V 100N Capacitor Radial Electrolytic Dia 5mm Pitch 5mm 22UF 63V Capacitor SM 0805 X7R Ceramic 10% 50V 100N Capacitor SM 0805 X7R Ceramic 10% 50V 100N Capacitor Radial Electrolytic Dia 12.5mm Pitch 5mm 1000UF 35V Capacitor Radial Electrolytic Dia 12.5mm Pitch 5mm 1000UF 35V Capacitor Radial Electrolytic Dia 5mm Pitch 5mm 100UF 25V Capacitor Radial Electrolytic Dia 5mm Pitch 5mm 100UF 25V Capacitor Radial Electrolytic Dia 5mm Pitch 5mm 100UF 25V Capacitor Radial Electrolytic Dia 5mm Pitch 5mm 100UF 25V Capacitor Boxed Polyester 5mm Pitch 5% 100VDC 100N Capacitor SM 0805 X7R Ceramic 10% 50V 100N Capacitor Radial Electrolytic Dia 10mm Pitch 5mm 1000UF 25V Capacitor Radial Electrolytic Dia 10mm Pitch 5mm 1000UF 25V Capacitor Radial Electrolytic Dia 10mm Pitch 5mm 1000UF 10V Capacitor Radial Electrolytic Dia 22mm Claw Mount 3,300UF 63V Capacitor Radial Electrolytic Dia 22mm Claw Mount 3,300UF 63V Capacitor Radial Electrolytic Dia 22mm Claw Mount 3,300UF 63V Capacitor Radial Electrolytic Dia 22mm Claw Mount 3,300UF 63V Capacitor SM 0805 X7R Ceramic 10% 100V 10N Capacitor SM 0805 X7R Ceramic 10% 100V 10N Capacitor SM 0805 X7R Ceramic 10% 100V 10N Capacitor SM 0805 X7R Ceramic 10% 100V 10N Capacitor SM 0805 X7R Ceramic 10% 100V 10N Capacitor SM 0805 X7R Ceramic 10% 100V 10N Capacitor SM 0805 X7R Ceramic 10% 100V 10N Capacitor SM 0805 X7R Ceramic 10% 100V 10N Capacitor SM 0805 X7R Ceramic 10% 100V 10N Capacitor SM 0805 X7R Ceramic 10% 100V 10N Capacitor SM 0805 X7R Ceramic 10% 100V 10N Capacitor SM 0805 X7R Ceramic 10% 100V 10N Capacitor SM 0805 X7R Ceramic 10% 100V 10N Capacitor SM 0805 X7R Ceramic 10% 100V 10N Capacitor SM 0805 X7R Ceramic 10% 100V 10N Capacitor SM 0805 X7R Ceramic 10% 100V 10N Capacitor SM 0805 X7R Ceramic 10% 100V 10N Capacitor SM 0805 X7R Ceramic 10% 100V 10N Capacitor SM 0805 X7R Ceramic 10% 100V 10N Capacitor SM 0805 X7R Ceramic 10% 100V 10N Capacitor Boxed Polypropylene 5mm Pitch 100V 5% 470P Capacitor Boxed Polypropylene 5mm Pitch 100V 5% 470P Capacitor Boxed Polypropylene 5mm Pitch 100V 5% 470P Capacitor Boxed Polypropylene 5mm Pitch 100V 5% 470P Capacitor Boxed Polypropylene 5mm Pitch 100V 5% 470P Capacitor Boxed Polypropylene 5mm Pitch 100V 5% 470P Capacitor Boxed Polypropylene 5mm Pitch 100V 5% 470P Capacitor Boxed Polypropylene 5mm Pitch 100V 5% 470P Capacitor Boxed Polypropylene 5mm Pitch 100V 5% 470P Capacitor Boxed Polypropylene 5mm Pitch 100V 5% 470P

Designator C817 C818 C819 C820 C821 C822 C823 C824 C825 C826 C827 C828 C829 C830 C831 C832 C833 C834 C835 C836 C837 C838 CON100 CON101 CON200 CON201 CON202 CON203 CON204 CON205 CON300 CON301 CON302 CON303 CON304 CON305 CON306 CON307 CON400 CON401 CON500 CON501 CON600 CON601 CON602 CON700 CON701 CON702 CON800 D100 D101 D102 D200 D201 D202 D203 D210 D211 D212 D213 D214 Part 2J410 2J410 2J410 2J410 2J410 2J410 2J410 2J410 2L210 2L210 2L210 2L210 2L210 2JA310 2JA310 2MA710 2MA710 2J410 2MA610 2MA610 2L047 2L047 8K2005 8K2005 8Q009 8Q001 8Q003 8Q003 8Q007 8Q008 8K6201 8K6201 8K6201 8K6201 8K2103 8K2103 8K2103 8K2103 8K2103 8K6201 8K2103 8K6201 8K8022 8K6201 8K6201 8K6201 8K6201 8K2103 8K8122 3B4003 3B4003 3AS16W 3B4003 3B4003 3B4003 3B4003 3AS16W 3AS16W 3AS16W 3AS16W 3AS16W Description Capacitor SM 0805 X7R Ceramic 10% 50V 100N Capacitor SM 0805 X7R Ceramic 10% 50V 100N Capacitor SM 0805 X7R Ceramic 10% 50V 100N Capacitor SM 0805 X7R Ceramic 10% 50V 100N Capacitor SM 0805 X7R Ceramic 10% 50V 100N Capacitor SM 0805 X7R Ceramic 10% 50V 100N Capacitor SM 0805 X7R Ceramic 10% 50V 100N Capacitor SM 0805 X7R Ceramic 10% 50V 100N Capacitor SM 0805 NPO Ceramic 5% 100V 1N0 Capacitor SM 0805 NPO Ceramic 5% 100V 1N0 Capacitor SM 0805 NPO Ceramic 5% 100V 1N0 Capacitor SM 0805 NPO Ceramic 5% 100V 1N0 Capacitor SM 0805 NPO Ceramic 5% 100V 1N0 Capacitor SM 0805 X7R Ceramic 10% 100V 10N Capacitor SM 0805 X7R Ceramic 10% 100V 10N Capacitor Surface Mount Electrolytic 100UF 6.3V 6.3 X 4.5MM Capacitor Surface Mount Electrolytic 100UF 6.3V 6.3 X 4.5MM Capacitor SM 0805 X7R Ceramic 10% 50V 100N Capacitor Surface Mount Electrolytic 10UF 50V 6.3 X 4.5MM Capacitor Surface Mount Electrolytic 10UF 50V 6.3 X 4.5MM Capacitor SM 0805 NPO Ceramic 5% 100V 47P Capacitor SM 0805 NPO Ceramic 5% 100V 47P Con CT Series Vertical 5WAY Con CT Series Vertical 5WAY Con Wago Cage Clamp Assy 3WAY 256-003/079-000 Con Cage Clamp 3WAY Con Cage Clamp 1WAY Con Cage Clamp 1WAY Con Cage Clamp 4WAY Con Cage Clamp 2WAY Con Single ROW Hdr 0.1IN Vertical 2WAY Con Single ROW Hdr 0.1IN Vertical 2WAY Con Single ROW Hdr 0.1IN Vertical 2WAY Con Single ROW Hdr 0.1IN Vertical 2WAY Con Single ROW Hdr 0.1IN Vertical 3WAY Con Single ROW Hdr 0.1IN Vertical 3WAY Con Single ROW Hdr 0.1IN Vertical 3WAY Con Single ROW Hdr 0.1IN Vertical 3WAY Con Single ROW Hdr 0.1IN Vertical 3WAY Con Single ROW Hdr 0.1IN Vertical 2WAY Con Single ROW Hdr 0.1IN Vertical 3WAY Con Single ROW Hdr 0.1IN Vertical 2WAY Con 1.25MM Vertical FFC 22WAY Con Single ROW Hdr 0.1IN Vertical 2WAY Con Single ROW Hdr 0.1IN Vertical 2WAY Con Single ROW Hdr 0.1IN Vertical 2WAY Con Single ROW Hdr 0.1IN Vertical 2WAY Con Single ROW Hdr 0.1IN Vertical 3WAY Con 1.25MM Horiz FFC 22WAY Diode 1N4003 DO-41 Package Diode 1N4003 DO-41 Package Diode Surface Mount Small Signal BAS16W SOT-23 Package Diode 1N4003 DO-41 Package Diode 1N4003 DO-41 Package Diode 1N4003 DO-41 Package Diode 1N4003 DO-41 Package Diode Surface Mount Small Signal BAS16W SOT-23 Package Diode Surface Mount Small Signal BAS16W SOT-23 Package Diode Surface Mount Small Signal BAS16W SOT-23 Package Diode Surface Mount Small Signal BAS16W SOT-23 Package Diode Surface Mount Small Signal BAS16W SOT-23 Package

Designator DZ401 DZ402 DZ403 DZ404 DZ405 DZ406 DZ500 DZ501 DZ502 DZ503 DZ504 DZ505 DZ506 DZ600 DZ601 DZ602 DZ603 DZ604 DZ700 DZ701 DZ800 DZ801 FHLDR200 FHLDR201 FS200/201 FS200/201 FS202 FS203 FS204 HS200 HS201 HS202 IC300 IC301 IC302 IC303 IC304 IC305 IC306 IC307 IC308 IC309 IC400 IC500 IC600 IC601 IC602 IC603 IC603-1 IC604 IC700 IC701 IC703 IC800 IC801 ITEM100-1 ITEM101-1 ITEM102-1 ITEM103-1 ITEM103-2 ITEM104-1 Part 3CW322V 3CW33V9 3CW33V9 3CW315V 3CW315V 3CW33V9 3CW322V 3CW322V 3CW33V9 3CW33V9 3CW315V 3CW315V 3CW33V9 3CW33V9 3CW33V9 3CW34V7 3CW34V7 3CW34V7 3CW315V 3CW34V7 3CW322V 3CW35V6 8S004 8S004 C56225 C54232 C3501 C3202 C3202 F007 F008 F007 5S408DY 5S408DY 5S408DY 5S408DY 5B072D 5B072D 5B2114M 5B2114M 5B2114M 5A2310 5B072D 5B072D 5K7400 5K7414 L027AY L028AY 8S028N 5G2402 5B324D 5K4040 5K7474T 5H6351 5H809308 L943PB F205 8M101 E802AP E802AP F232 Description Zener Diode 0.25W Surface Mount BZX84C22V SOT-23 Package Zener Diode 0.25W Surface Mount BZX84C3V9 SOT-23 Package Zener Diode 0.25W Surface Mount BZX84C3V9 SOT-23 Package Zener Diode 0.25W Surface Mount BZX84C15V SOT-23 Package Zener Diode 0.25W Surface Mount BZX84C15V SOT-23 Package Zener Diode 0.25W Surface Mount BZX84C3V9 SOT-23 Package Zener Diode 0.25W Surface Mount BZX84C22V SOT-23 Package Zener Diode 0.25W Surface Mount BZX84C22V SOT-23 Package Zener Diode 0.25W Surface Mount BZX84C3V9 SOT-23 Package Zener Diode 0.25W Surface Mount BZX84C3V9 SOT-23 Package Zener Diode 0.25W Surface Mount BZX84C15V SOT-23 Package Zener Diode 0.25W Surface Mount BZX84C15V SOT-23 Package Zener Diode 0.25W Surface Mount BZX84C3V9 SOT-23 Package Zener Diode 0.25W Surface Mount BZX84C3V9 SOT-23 Package Zener Diode 0.25W Surface Mount BZX84C3V9 SOT-23 Package Zener Diode 0.25W Surface Mount BZX84C4V7 SOT-23 Package Zener Diode 0.25W Surface Mount BZX84C4V7 SOT-23 Package Zener Diode 0.25W Surface Mount BZX84C4V7 SOT-23 Package Zener Diode 0.25W Surface Mount BZX84C15V SOT-23 Package Zener Diode 0.25W Surface Mount BZX84C4V7 SOT-23 Package Zener Diode 0.25W Surface Mount BZX84C22V SOT-23 Package Zener Diode 0.25W Surface Mount BZX84C5V6 SOT-23 Package Fuseholder 20MM PCB Fuseholder 20MM PCB 115/230 vac units T2.5A fuse 100 vac fuse T3.15A fuse Fuse Littelfuse T500mA SM Fuse Littelfuse T2A SM Fuse Littelfuse T2A SM Heatsink TO-220 6043PB 23 Degc/W Clip ON Heatsink TO-220 SW50-2 8.8 Deg C/W Heatsink TO-220 6043PB 23 Degc/W Clip ON IC Analogue Mux DG408DY SO-16 Package IC Analogue Mux DG408DY SO-16 Package IC Analogue Mux DG408DY SO-16 Package IC Analogue Mux DG408DY SO-16 Package Opamp TL072CD SO-8 Package Opamp TL072CD SO-8 Package Opamp NJM2114M DMP-8 Package Opamp NJM2114M DMP-8 Package Opamp NJM2114M DMP-8 Package IC Audio Digital Stereo Volume Ctrl Opamp TL072CD SO-8 Package Opamp TL072CD SO-8 Package IC Quad 2-INPUT Nand Gate 74HC00D SMT IC Hex Inverting Schmitt Trigger 74HC14 SMT Programmed H8HD64F3664FP With Software For A80 Programmed HT48R30A-1 With Software For P80 IC Skt 28PIN 0.3IN IC Eeprom I2C 2kbit SO-8 Package Opamp Quad ON Semi LM324D SO-14 Package IC 12-STAGE Binary Ripple COUNTER74HCT4040D SMT IC Latch 74HCT74D SMT IC VFD Driver PT6351 IC Micro Reset LM809M3-3.08 SOT-23 Blank PCB Diva A80 Amp Tape D/Sided 12MM X 70MM DS Polyester 4965 Earth Lead Assy 75MM Pad Damping 15x6x3MM Sorbothane Pad Damping 15x6x3MM Sorbothane 13/16 inch O-Ring