Jan 2006
SERVICE MANUAL
MUTE PHONES
TU
CD
AV AU1 AU2 TP1 TP2
SPECIFICATIONS
Continuous Power 70W/CH (both driven into 8 Ohms)
110W/CH (both driven into 4 Ohms)
Burst Power 340W (IHF, one channel driven into 1 Ohm)
Distortion 0.003%, 1kHz (into 8 Ohms)
0.005%, 1kHz (into 4 Ohms)
Frequency Response -3 dB, 0.2Hz and 85kHz
Damping Factor 150
Sensitivity (50W) Line: 200mV
Input impedance 50kOhm (RCA).
Output voltage 200mV (Tape out), 380mV (Pre out)
S/N Ratio 101dBA (ref. 50W)
Channel Balance ±0.2dB (0dB to -63dB)
Volume control accuracy ±0.1dB (0dB to -63dB)
Dimensions (H x W x D) 73 x 215 x 360 (mm), 2.8 x 8.4 x14.1 (inches)
Weight 5.5kg
Finish Black/Silver
CYRUS 6 & CYRUS 8
INTEGRATED AMPLIFIER
CYRUS 6 & 8 - Service Cautions
Jan 2006
These two symbols shown are displayed prominently on the Cyrus 8 base cover
label. They indicate that the following cautions must be observed by all personnel-
CAUTION: TO REDUCE THE RISK OF ELECTRICAL SHOCK, DO NOT REMOVE COVER OR BACK.
THERE ARE NO USER SERVICEABLE PARTS INSIDE THE PRODUCT.
ALWAYS REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
CYRUS 6 & 8 - Type Identification
Jan 20061
Rating label
Each Cyrus 8 carries a rating label on the rear panel, which includes details of the following:
Nominal power voltage
This will be either 230V For use on nominal 220V - 240V AC mains supply.
115V For use on nominal 110V - 120V AC mains supply.
AC fuse rating
The AC fuse rating is also shown on the label. If replacing the AC fuse it is essential that the
replacement fuse is exactly the same specification as the original fuse, supplied by Cyrus. All
mains fuses have a 'Timelag' blow characteristic.
Power consumption
The power consumption figure is indicated under conditions of full power drive into the rated
speaker load.
Serial number
Each Cyrus 8 carries a serial number code, which identifies the following-
Type of product
Market destination
Build number
The serial number is on the baseplate. It is therefore important to ensure that a baseplate removed
from a product is re-fitted to the same product. In any communications with Cyrus Service or
Quality departments it is essential that the full serial number is quoted so that original
specification parts and service information may be supplied.
Cyrus 8 and Cyrus 6 variants
The amplifier is available in two versions, the Cyrus 8 and the Cyrus 6. The Cyrus 8 is the higher
specification unit with a larger capacity power supply (therefore increased power output) and
extra features such as PSX-R connection.
Component differences between the two versions are-
Power transformer
AC power fuse
Rear panel rating label
DC rail fuses
PCB fuse replacement warning
PSX-R connection cable assembly
Front panel assembly
Main reservoir capacitors
Charge Pump voltage: R310, R311 links on Cyrus 6
When replacing any of the above listed components, ensure that the correct specification, original
type components for Cyrus 6 or Cyrus 8 are used.
CYRUS 6 & 8 – Block Diagram
Jan 20062
CD
TU
AV
AUX1
AUX2
TAPE1
TAPE
OUT
IN
TAPE2
IN
DIGITALLY
CONTROLLED
INPUT
SELECTOR
DIGITALLY
CONTROLLED
TAPE2
SELECTOR
BUFFE
X1
DIGITALLY
CONTROLLED
VOLUME
CONTROL
FET
BUFFE
R
X 5.6dB
PR
E
OUT
CONTROL
CONTROL
CONTROL
HEADPHON
E
AMPLIFIER
WITH MUTE
CONTROL
HEADPHONES
70
AMPLIFIER
WITH MUTE
X 34.4dB
CONTROL
MICRO CONTROLLER, DISPLAY AND EEPROM
CONTROLIR
MCBUS
POWER SUPPLY
5V, +/-6VDC, +/-15V, +/-44VDC,+/- 42VDC
230VA
BI-WIRE SPEAKER
OVER CURRENT PROTECTION
OVER TEMP PROTECTION
UNDER VOLTAGE PROTECTION
PSU VOLTAGES
CYRUS 6 & 8 Circuit Description
Jan 20063
NOTE: - Reference numbers in the text are for the left channel.
Input selection and Tape Monitor
The input and tape monitor selection is via an electronic audio selector switch. The switch is a
6way 2pole switch followed by a 2way 2pole for tape monitor (IC101). The signal from the input
selection is then sent to the TAPE OUT sockets via 330R resistors.
Volume control
The output signal from the input selector buffer is AC coupled to the input of the digitally
controlled volume IC: IC104. The output is then buffered by the FET input op-amp IC105.
Preamp Output
The Preamp output is taken from the volume control buffer IC105.
Power amplifier stage
The power amplifier is a discrete voltage feedback design. RV201 allows adjustment of the
output transistor bias current. T208 and T210 are the driver transistors. T206, T208 and T210
are bolted together to ensure good thermal coupling. T209 and T211 are the output transistors.
Headphones
The drive for the headphones comes from a dedicated power amplifier IC401. The headphone
amplifier is muted when the power amplifiers are on and activated when the power amplifiers are
off, when a 6.3mm jack plug is inserted in the headphone socket.
Power supply
The power supply for the main amplifier is 37VDC (Cyrus 6) or 43VDC (Cyrus 8), protected
by fast blow fuses. In addition a regulated 34VDC (Cyrus 6) or 42VDC (Cyrus 8) is derived
from a charge pump circuit and supplies the low current section of the power amplifiers.
Regulated 15V is derived from the power supply for the main amplifier via regulators VR402
and VR403. The 15V supplies are used for volume control, buffers and parts of the protection
circuits. 6VDC is derived from the 15VDC supply. When a PSX-R is connected (Cyrus 8
only), changes to the internal power supply connections route the 35V regulated power from
the PSX-R to the 15V Regulators.
The protection circuits
Over-current protection is achieved by detecting the voltage across the emitter resistors
R218/219. When a high level of current is detected T212 will turn on, switching T225 on etc.
The output signal from this detector is then sent to the control microprocessor.
Power supply failure is detected by IC402 arranged as a window comparator. The window range
is set between 19V and 60V, as the amplifier will work between these voltages. If the supply
voltage is outside that range a power supply error signal is sent to the control microprocessor.
Mains disconnection is detected by the control microprocessor, to prevent switch off noise.
The control system
IC501 is the control microprocessor, located on the front panel. A memory EPROM IC501 is
fitted in a socket to allow the control software to be upgraded if necessary. The microprocessor
controls all the amplifier functions including storage of settings in an internal memory. IC508 is a
CYRUS 6 & 8 Circuit Description
Jan 20064
power supply voltage supervisor for the control microprocessor. If the power supply voltage
drops below 4.35V it will reset the control microprocessor.
CYRUS 6 & 8 - Use with a PSX-R
Jan 20065
Multiway connector pin assignments
The connections between the Cyrus 8 and PSX-R function as follows-
Pin 1 (Standby)
This is an output from the Cyrus 8 to send a standby control message (logic 1, +5V) to the PSX-
R, enabling the regulated power supplies of the PSX-R. Note that this pin will not change state if
the Cyrus 8 detects a fault (See pin 5).
Pin 2 (Positive supply)
For the Cyrus 8 application this pin delivers +35V from the PSX-R to the Cyrus 8, switched by
the Standby control system.
Pin 3 (GND)
This pin is the system ground return between the Cyrus 8 and PSX-R.
Pin 4 (Negative supply)
For the Cyrus 8 application this pin delivers -35V from the PSX-R to the Cyrus 8, switched by
the Standby control system.
Pin 5 (PSX-R detect)
This pin is an input to the Cyrus 8 to detect the presence of a working PSX-R. The line condition
is Logic 1 (+5V) at all times when a PSX-R is connected and power is applied. (The PSX-R will
change the state of this pin to logic 0 if an internal fault occurs in the PSX-R).
This diagram shows the pin numbers of the
Cyrus 8 power supply input connector. View
is of the connector pins from the rear of the
amplifier
CYRUS 6 & 8 – Quiescent Current
Jan 20066
Quiescent current setting
Switch off the power to the amplifier.
Check that the amplifier is not set for PSX-R use.
Connect mV meter to SK205 and no signal to input.
Switch on the amplifier at the rear with nominal mains voltage: 230/115Vrms, and
bring out of standby.
Adjust the quiescent setting preset RV201 so that the meter reads 5.5mV
Proceed to connect the test meter to SK206. Adjust the quiescent setting preset
RV202 so that the meter 5.5mV.
Leave the amplifier to stabilise for fifteen minutes and repeat the adjustments for both
channels, taking the setting to 3.2mV 0.5mV.
Check periodically and adjust if necessary to 3.2mV 0.5mV until settled. Also ensure
nominal mains voltage has not drifted.
CYRUS 6 & 8 – MCBus Operation
Jan 20067
MCBus
MCBus is a system which provides communication between the control systems of a number of
Cyrus products. The communication takes the form of a serial data stream which is sent from a
'master' product and received and repeated by 'slave' products. The data is thus passed from one
product to another around a loop. The master product should then receive the message back
which confirms that loop connections have been correctly made. The Cyrus 8 is a 'master'
product and sends commands following certain key sequences. Products such as CD players and
tuners are 'slaves' and only listen to MCBus for commands which may be appropriate.
MCBus system test
The MCBus system can be tested by substituting the amplifier into a known working Cyrus
system with a CD player or tuner. Note that MCBus must be connected as a closed loop. It is
also important to connect the audio signal cables between components to provide an adequate
ground return path for the MCBus signals. Switch on the power to the system and set all
components to Standby. Selecting an input on the amplifier will now activate both the Cyrus 8
and the selected device (tuner or CD as connected). When the Cyrus 8 is set to Standby, all other
components connected to the MCBus loop will also set to Standby.
CYRUS 6 & 8 – Replacing SMT Components
Jan 20068
Handling
SMD resistors and capacitors are widely used in the Cyrus range of products. When handling
SMD components, certain precautions should be observed-
Handling SMD resistors and capacitors
Always store SMD components in their original packaging or in a cool dry environment.
Always handle SMD resistors and capacitors with tweezers or a vacuum pencil.
Never handle SMD resistors and capacitors with fingers.
Hold the SMD component by the body, not by the ends.
Do not use SMD resistors or capacitors if the ends are dirty or discoloured.
Do not use SMD resistors or capacitors if they have been dropped on the floor- they may
be internally damaged.
Always use replacement components of the correct size and shape. SMD components are
available in many different packages. Where possible, order original parts from Cyrus.
Handling SMD ICs
Always store these components in their original packaging or in a cool dry environment.
Always handle SMD transistors and ICs with tweezers or a vacuum pencil.
Never handle SMD transistors and ICs with fingers.
Ensure that the connection pins of larger multi-pin ICs are not deformed or damaged
before fitting.
Measuring circuits with SMD capacitors and resistors
Avoid using sharp, pointed probes directly on the component end caps.
Measure voltages from the PCB pad next to the component.
Static precautions
SMD components, particularly ICs, may be damaged by the static levels present in the workshop.
Damage caused by static may not immediately cause component failure but could cause partial
damage and a possible failure in the future. Observing these simple SMD precautions will avoid
product failures related to static damage-
Always wear a grounded wristband when replacing any electronic components.
Always store components in their original packaging or conductive plastic bags.
Never store components in plastic trays or bags without protection.
Soldering/desoldering SMD components
Never re-use old SMD components after de-soldering!
Always apply solder heat directly to the contact area. Avoid over-heating adjacent
components.
Always repair SMD PCBs with the correct tools. SMD components can only be replaced
with a hot air pencil or soldering iron designed for SMD components, preferably with
temperature control.
CYRUS 6 & 8 – Replacing SMT Components
Jan 20069
Keep the soldering temperature as low as possible. 260ºC is recommended for SMD
rework. Most SMD components will withstand 260ºC for 5 to 10 seconds
Use tin/lead/silver solder which has a lower melting point (about 179ºC). Tin/lead/silver
solder paste or small gauge solder (26SWG) is recommended.
When using solder paste a pressure dispenser should be used to ensure the correct amount
of solder is applied to each pad.
Solder paste should not be used with direct heating methods as the solder between
component pins may not be melted.
If necessary, remove excess solder paste with solder braid.
Removing SMD resistors and capacitors from the PCB with a soldering iron
1. Fit the soldering iron with a tip large enough to bridge both ends of the component.
2. Place the soldering iron so that its flat tip will heat both ends of the component at once.
3. When the solder melts, remove the component with tweezers.
4. Allow the PCB to cool for a few minutes, removing any excess solder with desoldering braid.
Fitting replacement SMD resistors and capacitors to the PCB with a soldering iron
1. Apply a little flux to the connections.
2. Place the component in position.
3. Tin the soldering iron, bring the tip into contact with the PCB pad and flow solder to the
joint. Avoid bringing the soldering iron tip directly into contact with the component.
Removing SMD ICs from the PCB
1. Using fine tipped side cutters or tweezer cutters, snip all the leads of the device and remove
the IC body.
2. Desolder the leads from the PCB pads.
3. Clean up the PCB with solder braid.
Removing SMD ICs with a hot air SMD tool
1. Fit a suitable size tip for the IC being removed.
2. Heat the IC evenly until the solder melts.
3. Remove the IC with tweezers.
Fitting replacement ICs to the PCB with a soldering iron
1. Check that the pins of the IC are not distorted.
2. Using tweezers, position the IC over the footprint.
3. Check that all the IC pins are correctly aligned with the pads.
4. With a very fine tip soldering iron, solder in the pins at the corners of the IC.
5. Re-check the alignment and correct if necessary.
6. When the alignment is OK, solder the remaining pins of the IC to the PCB.
CYRUS 6 & 8 – Front Panel Parts Drawing
Jan 200610
MUTE PHONES
TU
CD
AV
AU1 AU2 TP1 TP2
a
de
fg
hi
b
c
j
k
Front Panel parts
Ref Part Number Description
a AM-POWCP/ Standby knob trim
b AM-PLENS/ Power lens
c AM-LEMSM/02 Remote eye lens
d
AM-FACIA/C6B
AM-FACIA/C6S
AM-FACIA/C8B
AM-FACIA/C8S
Cyrus 6 front facia black
Cyrus 6 front facia silver
Cyrus 8 front facia black
Cyrus 8 front facia silver
e
AM-FRONT/02
AM-FRONT/S
Technical Moulding (black front panel)
Technical moulding (Silver front panel)
f AM-VOLRG/B Volume control lens trim
g AM-VLENS/ Volume control lens
h AM-RKNOB/B Volume control knob plastic insert
i
AM-CKNOB/
AM-CKNOB/S
Volume control knob black
Volume control knob silver
j AM-CHPLT/02 Baseplate
k AM-BFOOT/ Rubber foot
CYRUS 6 & 8 – PCB parts list
Jan 200611
CYRUS 6 & 8 COMPONENT LIST
RESISTORS
R100 SMD 0805 NOT FITTED
R101 SMD 0805 NOT FITTED
R109 SMD 0805 4.7K MF 1/8W 1%
R110 SMD 0805 100K MF 1/8W 1%
R111 SMD 0805 4.7K MF 1/8W 1%
R112 SMD 0805 100K MF 1/8W 1%
R113 SMD 0805 100K MF 1/8W 1%
R114 SMD 0805 100K MF 1/8W 1%
R115 SMD 0805 100K MF 1/8W 1%
R116 SMD 0805 100K MF 1/8W 1%
R117 SMD 0805 100K MF 1/8W 1%
R118 SMD 0805 100K MF 1/8W 1%
R119 SMD 0805 100K MF 1/8W 1%
R120 SMD 0805 100K MF 1/8W 1%
R121 SMD 0805 100K MF 1/8W 1%
R122 SMD 0805 100K MF 1/8W 1%
R123 SMD 0805 100K MF 1/8W 1%
R124 SMD 0805 100K MF 1/8W 1%
R125 SMD 0805 330R MF 1/8W 1%
R126 SMD 0805 330R MF 1/8W 1%
R127 SMD 0805 1.3K MF 1/8W 1%
R128 SMD 0805 4.3K MF 1/8W 1%
R129 SMD 0805 1.3K MF 1/8W 1%
R130 SMD 0805 4.3K MF 1/8W 1%
R131 SMD 0805 1.6K MF 1/8W 1%
R132 SMD 0805 220R MF 1/8W 1%
R134 SMD 0805 1.6K MF 1/8W 1%
R135 SMD 0805 2.7K MF 1/8W 1%
R136 SMD 0805 220R MF 1/8W 1%
R137 SMD 0805 100K MF 1/8W 1%
R139 SMD 0805 10K MF 1/8W 1%
R140 SMD 0805 22R MF 1/8W 1%
R141 SMD 0805 22R MF 1/8W 1%
R142 SMD 0805 10K MF 1/8W 1%
R143 SMD 0805 2.7K MF 1/8W 1%
R144 SMD 0805 3.3K MF 1/8W 1%
R145 SMD 0805 10K MF 1/8W 1%
R146 SMD 0805 1M MF 1/8W 1%
R147 SMD 0805 1M MF 1/8W 1%
R148 SMD 0805 1K MF 1/8W 1%
R149 SMD 0805 1K MF 1/8W 1%
R150 SMD 0805 1K MF 1/8W 1%
R151 SMD 0805 47K MF 1/8W 1%
R152 SMD 0805 100K MF 1/8W 1%
R153 SMD 0805 1K MF 1/8W 1%
R154 SMD 0805 100K MF 1/8W 1%
R155 SMD 0805 100K MF 1/8W 1%
R156 SMD 0805 10K MF 1/8W 1%
R158 SMD 0805 100K MF 1/8W 1%
CYRUS 6 & 8 – PCB parts list
Jan 200612
R159 SMD 0805 100K MF 1/8W 1%
R164 SMD 0805 220R MF 1/8W 1%
R165 SMD 0805 220R MF 1/8W 1%
R201 SMD 0805 750R MF 1/8W 1%
R202 SMD 0805 220R MF 1/8W 1%
R203 SMD 0805 10K MF 1/8W 1%
R205 SMD 0805 100R MF 1/8W 1%
R206 SMD 0805 100R MF 1/8W 1%
R207 SMD 0805 100R MF 1/8W 1%
R208 SMD 0805 100R MF 1/8W 1%
R209 SMD 0805 330R MF 1/8W 1%
R211 SMD 0805 1K MF 1/8W 1%
R212 SMD 0805 18R MF 1/8W 1%
R213 SMD 0805 100R MF 1/8W 1%
R214 SMD 0805 100R MF 1/8W 1%
R215 SMD 0805 100R MF 1/8W 1%
R216 SMD 0805 68R MF 1/8W 1%
R217 SMD 0805 68R MF 1/8W 1%
R218 AXIAL 0.1R MF 2.5W 5%
R219 AXIAL 0.1R MF 2.5W 5%
R221 SMD 0805 39K MF 1/8W 1%
R222 SMD 0805 100R MF 1/8W 1%
R223 SMD 0805 100R MF 1/8W 1%
R224 SMD 0805 22K MF 1/8W 1%
R225 SMD 0805 100R MF 1/8W 1%
R226 SMD 0805 100R MF 1/8W 1%
R227 AXIAL 39K MF 1/4W 1%
R228 SMD 0805 39K MF 1/8W 1%
R229 SMD 0805 220R MF 1/8W 1%
R230 SMD 0805 10K MF 1/8W 1%
R231 SMD 0805 100R MF 1/8W 1%
R232 SMD 0805 100R MF 1/8W 1%
R233 SMD 0805 100R MF 1/8W 1%
R234 SMD 0805 100R MF 1/8W 1%
R235 SMD 0805 100R MF 1/8W 1%
R236 SMD 0805 330R MF 1/8W 1%
R237 SMD 0805 27K MF 1/8W 1%
R238 SMD 0805 1K MF 1/8W 1%
R239 SMD 0805 18R MF 1/8W 1%
R240 SMD 0805 100R MF 1/8W 1%
R241 SMD 0805 100R MF 1/8W 1%
R242 SMD 0805 100R MF 1/8W 1%
R243 SMD 0805 68R MF 1/8W 1%
R244 SMD 0805 68R MF 1/8W 1%
R245 AXIAL 0.1R MF 2.5W 5%
R246 AXIAL 0.1R MF 2.5W 5%
R247 SMD 0805 27K MF 1/8W 1%
R248 SMD 0805 100R MF 1/8W 1%
R249 SMD 0805 100K MF 1/8W 1%
R250 SMD 0805 100R MF 1/8W 1%
R251 SMD 0805 100R MF 1/8W 1%
R252 AXIAL 39K MF 1/4W 1%
R256 SMD 0805 750R MF 1/8W 1%
CYRUS 6 & 8 – PCB parts list
Jan 200613
R257 SMD 0805 10K MF 1/8W 1%
R258 SMD 0805 3.9R MF 1/8W 1%
R259 SMD 0805 3.9R MF 1/8W 1%
R260 SMD 0805 8.2K MF 1/8W 1%
R261 SMD 0805 8.2K MF 1/8W 1%
R264 SMD 0805 1K MF 1/8W 1%
R265 SMD 0805 1K MF 1/8W 1%
R266 SMD 0805 820R MF 1/8W 1%
R267 SMD 0805 820R MF 1/8W 1%
R268 SMD 0805 10K MF 1/8W 1%
R270 SMD 0805 10K MF 1/8W 1%
R271 SMD 0805 22K MF 1/8W 1%
R272 SMD 0805 22K MF 1/8W 1%
R273 SMD 0805 22K MF 1/8W 1%
R274 SMD 0805 22K MF 1/8W 1%
R275 SMD 0805 22K MF 1/8W 1%
R277 NOT FITTED
R278 NOT FITTED
R279 SMD 0805 100K MF 1/8W 1%
R280 SMD 0805 100K MF 1/8W 1%
R300 SMD 1206 4.7K MF 1/8W 1%
R301 SMD 1206 4.7K MF 1/8W 1%
R302 SMD 1206 4.7K MF 1/8W 1%
R303 SMD 1206 4.7K MF 1/8W 1%
R304 SMD 0805 330R MF 1/8W 1%
R305 SMD 0805 330R MF 1/8W 1%
R306 SMD 0805 10K MF 1/8W 1%
R307 AXIAL 1R MF 1/4W 5% Welwyn Fusible
R308 AXIAL 1R MF 1/4W 5% Welwyn Fusible
R309 SMD 0805 10K MF 1/8W 1%
R310 Cyrus 8 NOT FITTED - Cyrus 6 0R
R311 Cyrus 8 NOT FITTED - Cyrus 6 0R
R312 SMD 0805 10K MF 1/8W 1%
R313 SMD 0805 2.2K MF 1/8W 1%
R314 SMD 0805 100K MF 1/8W 1% 22k
R315 SMD 0805 100K MF 1/8W 1% 22k
R316 SMD 0805 100R MF 1/8W 1%
R317 SMD 0805 47R MF 1/8W 1%
R318 SMD 0805 2.2K MF 1/8W 1%
R319 SMD 0805 47K MF 1/8W 1%
R320 SMD 0805 47K MF 1/8W 1%
R321 NOT FITTED
R322 NOT FITTED
R323 NOT FITTED
R400 SMD 0805 10K MF 1/8W 1%
R401 SMD 0805 33K MF 1/8W 1%
R402 SMD 0805 1.6K MF 1/8W 1%
R403 SMD 0805 33K MF 1/8W 1%
R404 SMD 0805 33K MF 1/8W 1%
R405 SMD 0805 10K MF 1/8W 1%
R408 SMD 0805 1M MF 1/8W 1%
R409 SMD 0805 10K MF 1/8W 1%
R410 SMD 0805 10K MF 1/8W 1%
CYRUS 6 & 8 – PCB parts list
Jan 200614
R411 SMD 0805 3.3K MF 1/8W 1%
R412 SMD 0805 2.7K MF 1/8W 1%
R413 SMD 0805 2.7K MF 1/8W 1%
R414 SMD 0805 3.3K MF 1/8W 1%
R415 SMD 0805 560R MF 1/8W 1%
R416 SMD 0805 560R MF 1/8W 1%
R417 SMD 0805 22K MF 1/8W 1%
R418 SMD 0805 22K MF 1/8W 1%
R419 SMD 0805 620R MF 1/8W 1%
R420 SMD 0805 620R MF 1/8W 1%
R421 AXIAL 1R MF 1/4W 5% Welwyn Fusible
R425 SMD 0805 10K MF 1/8W 1%
R428 SMD 0805 10K MF 1/8W 1%
R429 SMD 0805 1K MF 1/8W 1%
R430 SMD 0805 2.7K MF 1/8W 1%
R431 SMD 0805 9.1K MF 1/8W 1%
R432 SMD 0805 9.1K MF 1/8W 1%
R433 SMD 0805 33K MF 1/8W 1%
R434 SMD 0805 33K MF 1/8W 1%
R435 SMD 0805 1K MF 1/8W 1%
R436 SMD 0805 1K MF 1/8W 1%
R437 SMD 0805 47K MF 1/8W 1%
R438 SMD 0805 100K MF 1/8W 1%
R439 SMD 0805 2.7K MF 1/8W 1%
R440 SMD 0805 2.7K MF 1/8W 1%
R441 SMD 0805 100K MF 1/8W 1%
R442 SMD 0805 1M MF 1/8W 1%
R443 SMD 0805 5.1K MF 1/8W 1%
R444 SMD 0805 5.1K MF 1/8W 1%
R445 SMD 0805 470R MF 1/8W 1%
R446 SMD 0805 470R MF 1/8W 1%
R447 NOT FITTED
R448 SMD 0805 470K MF 1/8W 1%
R449 SMD 0805 1M MF 1/8W 1%
R450 SMD 0805 470K MF 1/8W 1%
R451 SMD 0805 27K MF 1/8W 1%
R452 SMD 0805 22K MF 1/8W 1%
R453 SMD 0805 22K MF 1/8W 1%
R454 SMD 0805 10K MF 1/8W 1%
R455 SMD 0805 10K MF 1/8W 1%
R500 SMD 0805 27K MF 1/8W 1%
R501 SMD 0805 3.9K MF 1/8W 1%
R502 SMD 0805 330R MF 1/8W 1%
R503 SMD 0805 10K MF 1/8W 1%
R504 SMD 0805 20K MF 1/8W 1%
R505 SMD 0805 22K MF 1/8W 1%
R506 SMD 0805 18K MF 1/8W 1%
R507 SMD 0805 22K MF 1/8W 1%
R515 SMD 0805 100K MF 1/8W 1%
R516 SMD 0805 100K MF 1/8W 1%
R517 SMD 0805 100K MF 1/8W 1%
R518 SMD 0805 100K MF 1/8W 1%
R519 SMD 0805 100K MF 1/8W 1%
CYRUS 6 & 8 – PCB parts list
Jan 200615
R520 SMD 0805 100K MF 1/8W 1%
R522 SMD 0805 100K MF 1/8W 1%
R523 SMD 0805 100K MF 1/8W 1%
R538 SMD 0805 330R MF 1/8W 1%
R545 SMD 0805 330R MF 1/8W 1%
R546 SMD 0805 330R MF 1/8W 1%
R548 SMD 0805 10R MF 1/8W 1%
R561 SMD 0805 10K MF 1/8W 1%
R562 SMD 0805 10K MF 1/8W 1%
R564 SMD 0805 1K MF 1/8W 1%
R565 SMD 0805 100K MF 1/8W 1%
R566 SMD 0805 10K MF 1/8W 1%
R567 SMD 0805 47K MF 1/8W 1%
R568 RES_4PK_SMD 330R 1/16W 5%
R569 RES_4PK_SMD 330R 1/16W 5%
R570 RES_4PK_SMD 330R 1/16W 5%
R571 RES_4PK_SMD 330R 1/16W 5%
R572 RES_4PK_SMD 330R 1/16W 5%
R573 RES_4PK_SMD 330R 1/16W 5%
R574 RES_4PK_SMD 330R 1/16W 5%
R575 RES_4PK_SMD 10K 1/16W 5%
R576 RES_4PK_SMD 330R 1/16W 5%
R577 SMD 0805 330R MF 1/8W 1%
R578 SMD 0805 100K MF 1/8W 1%
R579 SMD 0805 100K MF 1/8W 1%
R580 SMD 0805 10K MF 1/8W 1%
R581 SMD 0805 10K MF 1/8W 1%
R582 SMD 0805 330R MF 1/8W 1%
R583 SMD 0805 10K MF 1/8W 1%
Key:
MF = metal film. NFR = non-flammable resistor. MRS25 = axial metal film resistor
SMD-0805 = refers to surface mount device size profile 0805
PRESETS
RV201 100R 150mW 10%
RV202 100R 150mW 10%
CAPACITORS
C101 SMD0805 100pF CP 50V 10%
C102 SMD0805 100pF CP 50V 10%
C103 SMD0805 100pF CP 50V 10%
C104 SMD0805 100pF CP 50V 10%
C105 SMD0805 100pF CP 50V 10%
C106 SMD0805 100pF CP 50V 10%
C107 SMD0805 100pF CP 50V 10%
C108 SMD0805 100pF CP 50V 10%
C109 SMD0805 100pF CP 50V 10%
C110 SMD0805 100pF CP 50V 10%
C111 SMD0805 100pF CP 50V 10%
C112 SMD0805 100pF CP 50V 10%
C113 SMD0805 100pF CP 50V 10%
CYRUS 6 & 8 – PCB parts list
Jan 200616
C114 SMD0805 100pF CP 50V 10%
C115 SMD0805 10nF CP 50V 10%
C116 SMD0805 33pF CP 50V 10%
C117 RB.2/.2 22uF EL 50V 20%
C118 RB.2/.2 22uF EL 50V 20%
C119 RAD0.2 470pF PE 63V 10%
C120 RB.2/.2 22uF EL 50V 20%
C121 RB.2/.2 22uF EL 50V 20%
C122 RAD0.2 470pF PE 63V 10%
C125 RFS.2/.3 220uF EL 16V 20%
C126 SMD0805 47pF CP 50V 10%
C127 RFS.2/.3 220uF EL 16V 20%
C128 SMD0805 47pF CP 50V 10%
C129 SMD0805 33pF CP 50V 10%
C130 RB.2/.2 22uF EL 16V 20%
C131 RB.2/.2 22uF EL 16V 20%
C132 RFS.2/.3 220uF EL 16V 20%
C133 RFS.2/.3 220uF EL 16V 20%
C134 RFS.2/.3 220uF EL 16V 20%
C135 SMD0805 47pF CP 50V 10%
C136 SMD0805 47pF CP 50V 10%
C137 RFS.2/.3 220uF EL 16V 20%
C138 SMD0805 1nF CP 50V 10%
C139 SMD0805 1nF CP 50V 10%
C140 SMD0805 1nF CP 50V 10%
C144 SMD0805 100pF CP 50V 10%
C145 SMD0805 100pF CP 50V 10%
C146 SMD0805 10nF CP 50V 10%
C200 SMD0805 100nF CP 50V 10%
C201 SMD0805 150pF CP 100V 10%
C202 SMD0805 100pF CP 100V 10%
C203 SMD0805 100pF CP 100V 10%
C204 SMD0805 100nF CP 50V 10%
C205 SMD0805 100nF CP 50V 10%
C206 SMD0805 100nF CP 50V 10%
C207 RB.2/.4 100uF EL 100V 20%
C208 SMD0805 150pF CP 100V 10%
C209 SMD0805 100pF CP 100V 10%
C210 SMD0805 100pF CP 100V 10%
C214 RB.2/.4 100uF EL 100V 20%
C215 RFS.2/.5 1000uF EL 6.3V 20%
C216 RFS.2/.5 1000uF EL 6.3V 20%
C219 SMD0805 680pF CP 50V 10%
C220 RAD0.2 100nF PE 63V 10%
C221 RAD0.2 100nF PE 63V 10%
C222 RB.2/.3 100uF EL 50V 20%
C223 RB.2/.3 100uF EL 50V 20%
C224 RB.2/.3 100uF EL 50V 20%
C225 RB.2/.3 100uF EL 50V 20%
C226 SMD0805 12pF CP 50V 10%
C227 SMD0805 12pF CP 50V 10%
C230 RAD0.2 1nF PE 100V 10%
C231 RAD0.2 1nF PE 100V 10%
CYRUS 6 & 8 – PCB parts list
Jan 200617
C232 SMD0805 4.7nF CP 50V 10%
C233 SMD0805 4.7nF CP 50V 10%
C300 RB.2/.2 22uF EL 50V 20%
C301 RB.2/.3 100uF EL 50V 20%
C302 RB.2/.3 100uF EL 50V 20%
C303 RB.2/.4 1000uF EL 16V 20%
C304 RB.2/.5 47uF EL 100V 20%
C305 RB.2/.5 47uF EL 100V 20%
C306 RB.2/.5 47uF EL 100V 20%
C307 RB.2/.5 47uF EL 100V 20%
C308 RB.3/.7 3300uF EL 50V 20%
C309 RB.3/.7 3300uF EL 50V 20%
C310 Cyrus 8 NOT FITTED - Cyrus 6 0R
C311 Cyrus 8 NOT FITTED - Cyrus 6 0R
C312 NOT FITTED
C400 RB.2/.2 22uF EL 50V 20%
C401 RAD0.2 100nF PE 100V 10%
C402 RAD0.2 100nF PE 100V 10%
C403 RAD0.2 100nF PE 100V 10%
C404 RAD0.2 100nF PE 100V 10%
C405 RB.2/.2 22uF EL 50V 20%
C406 AM 10000MF
EL 71V 20% - Cyrus 6 6800uF 50V
RE3
C407 AM 10000MF
EL 71V 20% - Cyrus 6 6800uF 50V
RE3
C408 SMD0805 100nF CP 50V 10%
C409 SMD0805 100nF CP 50V 10%
C410 RAD0.2 100nF PE 100V 10%
C411 RB.2/.2 22uF EL 50V 20%
C412 SMD0805 100nF CP 50V 10%
C413 SMD0805 100nF CP 50V 10%
C414 SMD0805 100nF CP 50V 10%
C415 RB.2/.4 1000uF EL 16V 20%
C416 RB.2/.3 220uF EL 16V 20%
C417 RB.2/.2 22uF EL 50V 20%
C419 SMD0805 100nF CP 50V 10%
C420 RB.2/.3 220uF EL 16V 20%
C421 RB.2/.2 22uF EL 50V 20%
C422 RB.2/.2 22uF EL 50V 20%
C423 RB.2/.2 22uF EL 50V 20%
C424 SMD0805 220nF CP 50V 20%
C425 RB.2/.2 22uF EL 50V 20%
C426 RB.2/.4 470uF EL16V 20%
C427 RB.2/.4 470uF EL16V 20%
C428 SMD0805 220nF CP 50V 20%
C429 SMD0805 470pF CP 50V 10%
C430 SMD0805 100nF CP 50V 10%
C431 SMD0805 100nF CP 50V 10%
C432 SMD0805 100nF CP 50V 10%
C433 SMD0805 100nF CP 50V 10%
C434 SMD0805 100nF CP 50V 10%
C500 SMD0805 100nF CP 50V 10%
C501 SMD0805 100nF CP 50V 10%
C502 SMD0805 100nF CP 50V 10%
C503 SMD0805 100nF CP 50V 10%
CYRUS 6 & 8 – PCB parts list
Jan 200618
C504 SMD0805 100nF CP 50V 10%
C505 SMD0805 22pF CP 50V 10%
C506 SMD0805 22pF CP 50V 10%
C507 SMD0805 100nF CP 50V 10%
C508 SMD0805 100nF CP 50V 10%
C509 SMD0805 100nF CP 50V 10%
C510 SMD0805 100nF CP 50V 10%
C511 SMD0805 100nF CP 50V 10%
C512 CAPSMD4.0 10uF EL 16V 20%
C514 SMD0805 100pF CP 50V 10%
C515 SMD0805 100pF CP 50V 10%
C516 SMD0805 100pF CP 50V 10%
C517 SMD0805 100pF CP 50V 10%
C518 SMD0805 100pF CP 50V 10%
C519 SMD0805 100pF CP 50V 10%
C520 SMD0805 100pF CP 50V 10%
C521 SMD0805 100pF CP 50V 10%
C522 CAPSMD4.0 10uF EL 16V 20%
C523 SMD0805 10nF CP 50V 10%
C524 SMD0805 10nF CP 50V 10%
C525 SMD0805 100pF CP 50V 10%
C526 SMD0805 100pF CP 50V 10%
C527 SMD0805 100pF CP 50V 10%
C528 SMD0805 100pF CP 50V 10%
Key:
CP = ceramic plate. EL = electrolytic. PE = polyester. PP = polypropylene. BP = bi-polar.
CAPSMD6.3 refers to surface mount device with 6.3mm pitch pads
SMD-0805 refers to surface mount device size code 0805
DIODES
D101 SOT23 BAS19 300mA Signal Diode
D102 SOT23 BAS19 300mA Signal Diode
D103 SOT23 BAS19 300mA Signal Diode
D104 SOT23 BAS19 300mA Signal Diode
D105 SOT23 BAS19 300mA Signal Diode
D201 SOT23 BAS19 300mA Signal Diode
D202 SOT23 BAS19 300mA Signal Diode
D204 SOT23 BAS19 300mA Signal Diode
D205 SOT23 BZX84-C12 12V ZENER
D206 DIODE_D1F 1SR154-400 1A Rectifier Diode
D207 DIODE_D1F 1SR154-400 1A Rectifier Diode
D208 DIODE_D1F 1SR154-400 1A Rectifier Diode
D209 DIODE_D1F 1SR154-400 1A Rectifier Diode
D212 SOT23 BZX84-C12 12V ZENER
D300 SOT23 BAS19 300mA Signal Diode
D301 SOT23 BZX84-C3V3 3.3V ZENER
D303 SOT23 BAS19 300mA Signal Diode
D304 SOT23 BAS19 300mA Signal Diode
D306 SOT23 BZX84-C10 10V ZENER
D307 SOT23 BZX84-C10 10V ZENER
D308 DIODE_D1F 1SR154-400 1A Rectifier Diode
D309 DIODE_D1F 1SR154-400 1A Rectifier Diode
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