Manuals+

Arcam Alpha One/7R/8R/8P Amplifier Service Manual

Issue 1 Serial Number 001 - (Paul Newton/ Haider Bahrani Sept '98)

Circuit Description

The Arcam Alpha One, 7R, 8R, and 8P amplifiers share a common printed circuit board (PCB) with very similar circuits. Key differences include the remote volume control, increased power output on the 7R and 8R models, a switch to bypass the phono stage for use as an extra line-level input, and an AV processor switch on the Alpha 8R integrated amplifier. The 8P power amplifier utilizes the same power amplifier circuit as the Alpha 8R integrated amplifier.

Power Supplies

The AC output from the toroidal mains transformer is rectified and smoothed by diodes D201-204 and capacitors C204, C205. This rectified voltage is then regulated to +/-15V by Zener diodes Z201, Z202, which power the phono and tone control stages, as well as the DC servo. The Alpha 7R and 8R transformers feature an additional tapping for the remote volume circuit. The AC input is regulated to 5V by Zener diode D902 and associated components, which then power the microcontroller Z901 and remote receiver.

Phono Stage (Not applicable to Alpha One)

The phono stage incorporates a dual op-amp Z305, with one op-amp per channel. RIAA equalization is achieved using feedback components R703, R704, R702, and capacitors C704, C705, C702 on the left channel (and R603 etc. for the right channel). R703 determines the gain, and C703 controls the low frequency roll-off. On the Alpha 8R, this stage can be bypassed via switch SW302 to enable its use as an extra line input.

Tone Controls

The tone control stage is built around Z304, a dual op-amp. The range of the controls is set by resistors R507, R508 for the bass potentiometer RV302, and R509, R510 for the treble potentiometer RV303. The tone controls and balance potentiometer can be bypassed using the direct switch, SW304.

Power Amplifier

The input to the power amplifier from preceding stages is fed to the differential input of transistors Q112 and Q113. Transistors Q110 and Q111 form a constant current source for the differential input stage. The output devices are 'n' channel MOSFETs, model SMF045. Zener diodes D103, D104 limit the voltage swing within safe limits for the output devices, while fusible resistors R105, R106 provide overcurrent protection to the devices. A portion of the output current appears across the protection network R41, R42. If this current becomes too high, transistor Q17 turns on and mutes the output. High DC levels at the output will also mute the output. There are no output fuses on the Alpha One, 7R, and 8R/8P amplifiers; muting is handled by the mute IC Z303 and its associated components. The mute circuit activates on switch on/off, or if an overcurrent or overvoltage condition occurs. The power LED glows amber when the mute circuit is active and green during normal operation.

Removing the Alpha One/7R/8R/8P Transformer

The toroidal transformer is securely attached to the main PCB with a double-sided adhesive gasket. To remove the transformer, this adhesive bond must be broken by cutting through the gasket, which is easier if the transformer is warm. A cheese wire can be used under the transformer, pulling it backwards and forwards under tension to gradually cut through. Once most of the adhesive is cut, the transformer can be pulled away from the PCB. A less satisfactory alternative to cheese wire is to use some 22 gauge tinned copper wire, first stretched to remove kinks, and then fitted with two temporary handles.

Alpha One/7R/8R/8P Quiescent Current (IQ) Settings

When replacing the output transistors of these amplifiers, it is crucial to reset the quiescent current (IQ) to the correct value to prevent further damage to the amplifier. The IQ should be checked and set by following the procedure below:

  1. From a cold state, with no load or signal connected, turn both IQ presets (RV1 and RV101) down to minimum (fully anticlockwise).
  2. Set the voltage drop across resistor R1 (R101 for the right-hand channel) to between 3.0 and 3.5mV for the Alpha One and 7R amplifiers, or between 2.3 and 2.8mV for the Alpha 8R/8P amplifiers.
  3. Leave the unit for 1 minute and reset to these values if required.
  4. Leave the unit for a further 5 minutes and reset if required.
  5. Once the IQ is set, the unit can be connected to speakers and fully checked out.

Disassembly For Servicing

  1. Remove the top cover and front panel.
  2. Remove 2 screws securing the sub front to the chassis sides and 3 screws holding the subfront to the chassis base.
  3. Remove 1 screw holding the PCB to the chassis. This screw is located near the mains inlet socket.
  4. Remove 5 screws from the rear panel: one at each end and 3 along the bottom edge.
  5. Remove the transformer bolt.
  6. Release the PCB pillar located near the serial number on the PCB.

The PCB, with the rear panel, transformer, and subfront attached, can then be pulled backwards out of the unit.

Test Point Voltages

Test PointDC Voltage Alpha OneDC Voltage Alpha 7RDC Voltage Alpha 8R/8P
132.8V35V37V
227.8V29V31V
315V15V15V
4-32.8V-35V-37V
527.8V-29V-31V
6-15V-15V-15V
7N/A0.09V0.09V
8N/A0.10V0.10V
90.3V0.27V0.27V
103.4V3.2V2.9V
1132.8V35V37V
12-3V-2.7V-2.5V
1332.8V-35V-37V
Between 14 & 153.0-3.5mV3.0-3.5mV2.3-2.8mV
16 (protection off)0.0V0.0V0.0V
16 (protection on)0.6V0.6V0.6V
170.0V0.0V0.0V
180.0V0.0V0.0V
190.0V0.0V0.0V
200.0V0.0V0.0V
21 (protection off)1.6V1.6V1.6V
21 (protection on)5.0V5.0V5.0V
220.58V0.17V0.17V
233.4V3.1V3.1V
24-3V-2.7V-2.7V
25-26V-29V-29V
Between 26 & 273.4mV3.4mV2.5mV
28 (muted)35V35V35V
28 (protection off)1V1V1V
29N/A5V5V
30N/A10.510.5V
31 (volume going up)N/A0V0V
31 (volume going down)N/A5V5V
32 (volume going up)N/A0V0V
32 (volume going down)N/A5V5V

Parts Lists

The parts for all the units are as the Alpha 7 except where shown.

REFDescriptionPart NoProductREFDescriptionPart NoProduct
C1ELST 100U 100V2N710B7RC15SUPPR CAP 4N7 250V2K2477R
C2PEST 47N 63V 10%2K3477RC16ELST 100U 25V2N7107R
C3PCRB 100N 100V 5% RA 5mm2H4107RC17CERD 470P 63V 20% RA2A1477R
C4PEST 47N 63V 10%2K3477RC18CERD 1N0 63V 20% RA2A2107R
C5PSTY 33P 160V ENCAP 1PF%2F0337RC19ELST 100U 25V2N7107R
C7PPRO 4N7 63V 5% RA2D247N7RC20CERD 470P 63V 20% RA2A1477R
C8PPRO 100P 63V 5% RA2D110N7RC21CERD 10N 63V 20% RA2A3107R
C9ELST 100U 25V2N710A1C22CERD 10N 63V 20% RA2A3107R
C10ELST 22U 20V OSCON2P6227RC23SUPPR CAP 4N7 250V2K2477R
C10ELST 22U 63V ELECT2N622A1C24PPRO 4N7 63V 5% RA2D247N7R
C11ELST 100U 100V2N710B7RC25PCRB 100N 100V 5% RA 5mm2H4107R
C12ELST 100U 100V2N710B7RC26PCRB 100N 100V 5% RA 5mm2H4107R
C13PEST 15N 63V 10%2K3157RC27ELST 220U 16V2N7227R
C14PEST 15N 63V 10%2K3157RC28PCRB 100N 100V 5% RA 5mm2H4107R
C29ELST 1U0 50V 20% RA2N5108RC205ELST 6M8 35V RA2N868A1
C30ELST 22U 63V ELECT2N6227RC206PCRB 100N 100V 5% RA 5mm2H4107R
C30ELLL 47U 10V ELECT2R647A1C207PCRB 100N 100V 5% RA 5mm2H4107R
C30ELEC 10U 25V CERAFINE2P610CC8RC208PPRO 4N7 63V 5% RA2D247N7R
C101ELST 100U 100V2N710B7RC209PPRO 4N7 63V 5% RA2D247N7R
C102PEST 47N 63V 10%2K3477RC210ELST 10U 50V2N6107R
C103PCRB 100N 100V 5% RA 5mm2H4107RC211ELST 10U 50V2N6107R
C104PEST 47N 63V 10%2K3477RC212CERD 10N 63V 20% RA2A3107R
C105PSTY 33P 160V ENCAP 1PF%2F0337RC213CERD 10N 63V 20% RA2A3107R
C107PPRO 4N7 63V 5% RA2D247N7RC214CERD 10N 63V 20% RA2A3107R
C108PPRO 100P 63V 5% RA2D110N7RC215CERD 10N 63V 20% RA2A3107R
C109ELST 100U 25V2N710A1C216CERD 10N 63V 20% RA2A3107R
C110ELST 22U 20V OSCON2P6227RC217CERD 10N 63V 20% RA2A3107R
C110ELST 22U 63V ELECT2N622A1C301CERD 10N 63V 20% RA2A3107R
C111ELST 100U 100V2N710B7RC302CERD 10N 63V 20% RA2A3107R
C112ELST 100U 100V2N710B7RC502PCRB 100N 100V 5% RA 5mm2H410A1
C113PEST 15N 63V 10%2K3157RC303CERD 1N0 63V 20% RA2A2107R
C114PEST 15N 63V 10%2K3157RC304CERD 1N0 63V 20% RA2A2107R
C116ELST 100U 25V2N7107RC305CERD 47P 63V -20% +80% RA2A0477R
C117CERD 470P 63V 20% RA2A1477RC306CERD 47P 63V -20% +80% RA2A0477R
C118CERD 1N0 63V 20% RA2A2107RC401ELST 10U 50V2N6107R
C119ELST 1U0 50V 20% RA2N5107RC402PEST 220N 63V 10%2K4227R
C120CERD 470P 63V 20% RA2A1477RC402PCRB 100N 100V 5% RA 5mm2H410A1
C121ELST 1U0 50V 20% RA2N5107RC403PCRB 100N 100V 5% RA 5mm2H410A1
C122ELST 100U 25V2N7107RC403PEST 220N 63V 10%2K4227R
C123ELST 100U 25V2N7107RC404PPRO 4N7 63V 5% RA2D247N7R
C124PPRO 4N7 63V 5% RA2D247N7RC4042N2 PP2D222A1
C125PCRB 100N 100V 5% RA 5mm2H4107RC405ELST 10U 50V2N6107R
C126PCRB 100N 100V 5% RA 5mm2H4107RC406CERD 100P 63V 20% RA2A1107R
C127ELST 220U 16V2N7227RC407CERD 100P 63V 20% RA2A1107R
C128PCRB 100N 100V 5% RA 5mm2H4107RC408CERD 10P 63V 20% RA2A0107R
C130ELST 22U 63V ELECT2N6227RC501ELST 10U 50V2N6107R
C130ELLL 47U 10V ELECT2R647A1C502PEST 220N 63V 10%2K4227R
C130ELEC 10U 25V CERAFINE2P610CC8RC503PEST 220N 63V 10%2K4227R
C200CERD 1N0 63V 20% RA2A2107RC503PCRB 100N 100V 5% RA 5mm2H410A1
C201SUPPR CAP 4N7 250V2K2477RC504PPRO 4N7 63V 5% RA2D247N7R
C204ELST 10m 50V RA 32mm2N9107RC5042N2 PP2D222A1
C204ELST 6M8 35V RA2N868A1C505ELST 10U 50V2N6107R
C205ELST 10m 50V RA 32mm2N9107RC506CERD 100P 63V 20% RA2A1107R
C507CERD 100P 63V 20% RA2A1107R
C508CERD 10P 63V 20% RA2A0107R
C601PPRO 100P 63V 5% RA2D110N7RD9RECTIFIER 1N4003F 1A 200V3B40037R
C602CERD 47P 63V 20% RA2A0477RD10ZENER 5V6 400MW3C056048R
C603ELST 22U 63V2N6227RD101RECTIFIER 1N4003F 1A 200V3B40037R
C604PPRO 4N7 63V 5% RA2D247N7RD102ZENER 10V 400MW3C110047R
C605PPRO 1N3 63V 5% RA2D213N7RD103ZENER 10V 400MW3C110047R
C606ELST 10U 50V2N6107RD104ZENER 10V 400MW3C110047R
C701PPRO 100P 63V 5% RA2D110N7RD105RECTIFIER 1N4003F 1A 200V3B40037R
C702CERD 47P 63V 20% RA2A0477RD106RECTIFIER 1N4003F 1A 200V3B40037R
C703ELST 22U 63V2N6227RD107RECTIFIER 1N4003F 1A 200V3B40037R
C704PPRO 4N7 63V 5% RA2D247N7RD108ZENER 5V6 400MW3C056047R
C705PPRO 1N3 63V 5% RA2D213N7RD201ULTRAFAST RECTIFIER DIODE UF5403 3A3B5403F7R
C706ELST 10U 50V2N6107RD202ULTRAFAST RECTIFIER DIODE UF5403 3A3B5403F7R
C801PPRO 100P 63V 5% RA2D110N7RD203ULTRAFAST RECTIFIER DIODE UF5403 3A3B5403F7R
C802PPRO 100P 63V 5% RA2D110N7RD204ULTRAFAST RECTIFIER DIODE UF5403 3A3B5403F7R
C803ELST 10U 50V2N6107RD801ZENER 5V6 400MW3C056047R
C804ELST 10U 50V2N6107RD802ZENER 4V7 400MW3C047047R
C805CERD 10N 63V 20% RA2A3107RD803SSDIODE 1N4148 75V3A41487R
C806CERD 10N 63V 20% RA2A3107RD901RECTIFIER 1N4003F 1A 200V3B40037R
C901CERD 10N 63V 20% RA2A3107RD902ZENER 5V6 400MW3C056047R
C902ELST 220U 16V2N7227RD903RECTIFIER 1N4003F 1A 200V3B40037R
C903CERD 10N 63V 20% RA2A3107RD904ZENER 5V6 400MW3C056047R
C904CERD 10N 63V 20% RA2A3107RD905SSDIODE 1N4148 75V3A41487R
C905CERD 10N 63V 20% RA2A3107REL1FUSE CLIP WCK-180-01AF0627R
C906CERD 10N 63V 20% RA2A3107RFS201INS COVER PCB FUSEHOLDERF0227R
C907ELST 1M0 25V2N8107RFS201FUSE 20mm 1.25A ASC121267R
C1000CERD 10N 63V 20% RA2A3107RFS201FUSEHOLDER 20mm PCB8S0047R
CL1ALPHA AMP 7/8 HEATSINK CLAMPE822017RFS202FUSEHOLDER 20mm PCB8S0047R
CL2ALPHA AMP 7/8 HEATSINK CLAMPE822017RFS202INS COVER PCB FUSEHOLDERF0227R
D1RECTIFIER 1N4003F 1A 200V3B40037RHS1ALPHA AMP 7/8 HEATSINKE818017R
D2ZENER 10V 400MW3C110047RHS1SIL PAD - 25 X 12.5mmE817MC7R
D3ZENER 10V 400MW3C110047RHS1ALPHA AMP 7/8 HS CLIPE810MC7R
D4ZENER 10V 400MW3C110047RHS2SIL PAD - 25 X 12.5mmE817MC7R
D5SSDIODE 1N4148 75V3A41487RHS2ALPHA AMP 7/8 HEATSINKE818017R
D6RECTIFIER 1N4003F 1A 200V3B40038RHS2ALPHA AMP 7/8 HS CLIPE810MC7R
D7SSDIODE 1N4148 75V3A41487RHS3SIL PAD - 25 X 12.5mmE817MC7R
D8RECTIFIER 1N4003F 1A 200V3B40037RHS3ALPHA AMP 7/8 HEATSINKE818017R
HS3ALPHA AMP 7/8 HS CLIPE810MC7RQ104TRANS LF SS N BC546B4A5467R
HS4SIL PAD - 25 X 12.5mmE817MC7RQ105TRANS LF SS P BC556B4A5567R
HS4ALPHA AMP 7/8 HS CLIPE810MC7RQ106TRANS LF SS P BC556B4A5567R
HS4ALPHA AMP 7/8 HEATSINKE818017RQ107TRANS LF SS P BC556B4A5567R
L1INDUCT 2U2 12x20mm7D002B7RQ108TRANS LF SS N BC546B4A5467R
L101INDUCT 2U2 12x20mm7D002B7RQ110TRANS LF SS N BC547B4A5477R
LED201LED RED/GREEN 5MM3D0027RQ111TRANS LF SS N BC547B4A5477R
LK19RES MF W4 3K3 1%1H2337RQ112TRANS LF SS N BC547B4A5477R
LK19AA8R AMP MBD TO AV SWITCH CABLEL835CA8RQ113TRANS LF SS N BC547B4A5477R
LK20RES MF W4 3K3 1%1H2337RQ114TRANS LF SS P BC557B4A5577R
LK3117-WAY RIBBON 250mmL825CA7RQ115TRANS LF SS N BC546B4A5467R
LK805JUMPER 3 WAY x 125mmL815CA7RQ116TRANS LF SS P BC557B4A5577R
LK901JUMPER 8-WAY LEADL809CA7RQ117TRANS LF SS N BC546B4A5467R
LK902JUMPER 3 WAY x 125mmL815CA7RQ118TRANS LF SS N BC546B4A5467R
MSMAINS SWITCH SPACERE669017RQ119TRANS LF SS N BC546B4A5467R
PCBPRINTED CIRCUIT BOARDL846PB7RQ120TRANS LF SS N 2SC25474A25467R
Q1TRANS PWR MOSFET IRF540/SMF0454K0457RPL116 WAY DIL PIN HEADER8K63168P
Q2TRANS PWR MOSFET IRF540/SMF0454K0457RR1ARES MO 3W 5% 0R22 KOASPR31Q9227R
Q3TRANS LF SS P BC556B4A5567RR1RES MO 3W 5% 0R22 KOASPR31Q9227R
Q4TRANS LF SS N BC546B4A5467RR2RES CF W2 4R7 5%1D8477R
Q5TRANS LF SS P BC556B4A5567RR3RES CF W4 5% 2R21B8227R
Q6TRANS LF SS P BC556B4A5567RR4RES MF FU W3 100R 5% NFR251G1107R
Q7TRANS LF SS P BC556B4A5567RR5RES MF FU W3 100R 5% NFR251G1107R
Q8TRANS LF SS N BC546B4A5467RR6RES MF FU W3 100R 5% NFR251G1107R
Q9TRANS LF SS N BC546B4A5467RR7RES MF FU W3 470R 5% NFR251G1477R
Q10TRANS LF SS N BC547B4A5477RR8RES MF FU W3 470R 5% NFR251G1477R
Q11TRANS LF SS N BC547B4A5477RR9RES MF FU W3 470R 5% NFR251G1477R
Q12TRANS LF SS N BC547B4A5477RR10RES MF FU W3 470R 5% NFR251G1477R
Q13TRANS LF SS N BC547B4A5477RR11RES MF FU W3 470R 5% NFR251G1477R
Q14TRANS LF SS P BC557B4A5577RR12RES MF FU W3 470R 5% NFR251G1477R
Q15TRANS LF SS N BC546B4A5467RR13RES MF W4 1% 1K01H2107R
Q16TRANS LF SS P BC557B4A5577RR14RES MF W4 1% 1K01H2107R
Q17TRANS LF SS N BC546B4A5467RR15RES CF W4 5% 1K01B2107R
Q18TRANS LF SS N BC546B4A5467RR16RES MF W4 1% 2K71H2277R
Q19TRANS LF SS P BC556B4A5567RR17RES MF W4 1% 5K61H2567R
Q101TRANS PWR MOSFET IRF540/SMF0454K0457RR18RES MF W4 1% 2K71H2277R
Q102TRANS PWR MOSFET IRF540/SMF0454K0457RR19RES CF W4 5% 5K61B2567R
Q103TRANS LF SS P BC556B4A5567RR20RES MF W4 1% 15K1H3157R
R21RES MF W4 1% 100R1H1107RR61RES MF W4 18K 1%1H3187R
R22RES MF W4 1% 120R1H1127RR62RES MF W4 18K 1%1H3187R
R23RES MF W4 1% 2K71H2277RR63RES MF W4 1% 56K1H3568R
R24RES MF W4 1% 2K71H2277RR64RES MF W4 1% 56K1H3568R
R25RES MF W4 1% 330R1H1337RR70RES MF W4 1% 680R1H1687R
R26RES MF FU W3 470R 5% NFR251G1477RR101ARES MO 3W 5% 0R22 KOASPR31Q9227R
R27RES MF FU W3 470R 5% NFR251G1477RR101RES MO 3W 5% 0R22 KOASPR31Q9227R
R28RES MF W4 18K 1%1H3187RR102RES CF W2 4R7 5%1D8477R
R29RES MF W4 1% 1K21H2127RR103RES CF W4 5% 2R21B8227R
R30RES MF W4 1% 33K1H3337RR104RES MF FU W3 100R 5% NFR251G1107R
R31RES CF W4 5% 1K01B210A1R105RES MF FU W3 100R 5% NFR251G1107R
R32RES MF W4 1% 33K1H333A1R106RES MF FU W3 100R 5% NFR251G1107R
R33RES MF W4 1% 680K1H468A1R107RES MF FU W3 470R 5% NFR251G1477R
R34RES MF W4 1% 1K01H2107RR108RES MF FU W3 470R 5% NFR251G1477R
R34RES MF W4 1K6 1%1H216A1R109RES MF FU W3 470R 5% NFR251G1477R
R35RES MF W4 1% 33K1H3337RR110RES MF FU W3 470R 5% NFR251G1477R
R36RES MF FU W3 100R 5% NFR251G1107RR111RES MF FU W3 470R 5% NFR251G1477R
R39RES MF W4 18K 1%1H3187RR112RES MF FU W3 470R 5% NFR251G1477R
R40RES MF W4 1% 33K1H333A1R113RES MF W4 1% 1K01H2107R
R41RES MF FU W3 470R 5% NFR251G1477RR114RES MF W4 1% 1K01H2107R
R42RES MF W4 1% 620R1H1627RR115RES CF W4 5% 1K01B2107R
R43RES MF W4 1% 22K1H3228RR116RES MF W4 1% 2K71H2277R
R44RES MF W4 1% 68K1H3687RR117RES MF W4 1% 5K61H2567R
R45RES MF W4 18K 1%1H3187RR118RES MF W4 1% 2K71H2277R
R46RES MF W4 1% 150R1H1157RR119RES CF W4 5% 5K61B2567R
R47RES MF W4 1% 4K71H2477RR120RES MF W4 1% 15K1H3157R
R48RES MF W4 1% 47K1H3477RR121RES MF W4 1% 100R1H1107R
R49RES CF 1W 330R 5%1E1337RR122RES MF W4 1% 120R1H1127R
R50RES CF W2 100R 5%1D1107RR123RES MF W4 1% 2K71H2277R
R51RES MF W4 1% 15K1H3157RR124RES MF W4 1% 2K71H2277R
R52RES MF W4 1% 3K91H2397RR125RES MF W4 1% 330R1H1337R
R53RES MF W4 18K 1%1H3187RR126RES MF FU W3 470R 5% NFR251G1477R
R54RES MF W4 1% 68K1H3687RR127RES MF FU W3 470R 5% NFR251G1477R
R55RES MF W4 1% 22K1H3227RR128RES MF W4 18K 1%1H3187R
R56RES MF W4 1% 22K1H3227RR129RES MF W4 1% 1K21H2127R
R57RES CF 1W 2K7 5%1E2278RR130RES MF W4 1% 33K1H3337R
R58RES MF W4 1% 1K81H2187RR131RES CF W4 5% 1K01B210A1
R132RES MF W4 1% 33K1H333A1R203RES MF FU W3 470R 5% NFR251G1477R
R133RES MF W4 1% 680K1H468A1R204RES MF FU W3 470R 5% NFR251G1477R
R134RES MF W4 1% 1K01H2107RR205RES MF FU W3 470R 5% NFR251G1477R
R134RES MF W4 1K6 1%1H216A1R206RES MF FU W3 470R 5% NFR251G1477R
R135RES MF W4 1% 33K1H3337RR207RES MF W4 1% 100R1H1107R
R136RES MF FU W3 100R 5% NFR251G1107RR401RES MF W4 1% 1K81H2187R
R139RES MF W4 18K 1%1H3187RR402RES MF W4 1% 47K1H3477R
R140RES MF W4 1% 33K1H333A1R403RES MF W4 1% 2K21H2227R
R141RES MF FU W3 470R 5% NFR251G1477RR404RES MF W4 6K8 1%1H2687R
R142RES MF W4 1% 620R1H1627RR405RES MF W4 1% 4K71H2477R
R145RES MF W4 18K 1%1H3187RR406RES MF W4 1% 220R1H1227R
R146RES MF W4 1% 150R1H1157RR406RES MF W4 470R 1%1H147A1
R147RES MF W4 1% 4K71H2477RR407RES MF W4 1% 4K71H2477R
R147RES MF W4 12K 1%1H312A1R407RES MF W4 12K 1%1H312A1
R149RES CF 1W 330R 5%1E1337RR408RES MF W4 1% 4K71H2477R
R150RES CF W2 100R 5%1D1107RR408RES MF W4 12K 1%1H312A1
R151RES MF W4 1% 15K1H3157RR409RES MF W4 3K3 1%1H2337R
R152RES MF W4 1% 3K91H2397RR409RES MF W4 6K8 1%1H268A1
R153RES MF W4 1% 47K1H3477RR410RES MF W4 3K3 1%1H2337R
R154RES MF W4 1% 47K1H3477RR410RES MF W4 6K8 1%1H268A1
R155RES MF W4 1% 47K1H3477RR411RES MF W4 1% 4K71H2477R
R156RES MF FU W3 470R 5% NFR251G1477RR411RES MF W4 10K 1%1H310A1
R157RES MF W4 1% 100K1H4107RR412RES MF W4 1% 10K1H3107R
R158RES MF W4 1% 47K1H3477RR412RES MF W4 18K 1%1H318A1
R159RES MF W4 1% 100K1H4107RR415RES MF W4 3K3 1%1H2337R
R160RES MF W4 10K 1%1H3107RR416RES MF W4 1% 1K81H2187R
R161RES CF 1W 1K0 5%1E2107RR501RES MF W4 1% 1K81H2187R
R161RES CF 1W 330R 5%1E133A1R502RES MF W4 1% 47K1H3477R
R162RES MF W4 1% 47K1H3477RR503RES MF W4 1% 2K21H2227R
R163RES MF W4 1% 33K1H3337RR504RES MF W4 6K8 1%1H2687R
R164RES MF W4 18K 1%1H3187RR505RES MF W4 1% 4K71H2477R
R165RES MF W4 1% 47K1H3477RR506RES MF W4 1% 220R1H1227R
R166RES CF 1W 2K7 5%1E2277RR506RES MF W4 470R 1%1H147A1
R167RES CF 1W 2K7 5%1E2277RR507RES MF W4 1% 4K71H2477R
R170RES MF W4 1% 680R1H1687RR507RES MF W4 12K 1%1H312A1
R201RES MF FU W3 470R 5% NFR251G1477RR508RES MF W4 1% 4K71H2477R
R202RES MF FU W3 470R 5% NFR251G1477RR508RES MF W4 12K 1%1H312A1
R509RES MF W4 3K3 1%1H2337RR509RES MF W4 6K8 1%1H268A1
R510RES MF W4 3K3 1%1H2337RR901RES MF FU W3 1R0 5% NFR251G8107R
R510RES MF W4 6K8 1%1H268A1R902RES MF W4 1% 100R1H1107R
R511RES MF W4 1% 4K71H2477RR903RES MF W4 1% 100R1H1107R
R511RES MF W4 10K 1%1H310A1R904RES MF W4 1% 1K81H2187R
R512RES MF W4 1% 10K1H3107RR905RES MF W4 1% 4K71H2477R
R512RES MF W4 18K 1%1H318A1RLY1RELAY G5Z-2A-E 24VA2077R
R515RES MF W4 3K3 1%1H2337RRLY2RELAY 960 OHM 51SB12TA2058R
R516RES MF W4 1% 1K81H2187RRV110K PSET6F3107R
R601RES MF W4 1% 47K1H3477RRV10110K PSET6F3107R
R602RES MF W4 1% 470R1H1477RRV301POT 20KA* 2 LOG A6A320LA1
R603RES MF W4 1% 680K1H4687RRV302POT 10KB* 2 LIN6A310E7R
R604RES MF W4 1% 56K1H3567RRV303POT 10KB* 2 LIN6A310E7R
R605RES MF W4 1% 820R1H1827RRV304POT 10KB* 2 LIN6A310E7R
R701RES MF W4 1% 47K1H3477RRV901POT 20KA DUAL 18MM MOTORISED6A360M7R
R702RES MF W4 1% 470R1H1477RRX1REMOTE CONTROL RECEIVER SBX1610-62B21037R
R703RES MF W4 1% 680K1H4687RSK1CAMCON BINDING POST 4WAY NICKEL8D4187R
R704RES MF W4 1% 56K1H3567RSK1CANCON BINDING POST 4WAY GOLD8D418G8R/8P
R705RES MF W4 1% 820R1H1827RSK2CAMCON BINDING POST 4WAY NICKEL8D4187R
R801RES MF W4 1% 4K71H2477RSK2CANCON BINDING POST 4WAY GOLD8D418G8R/8P
R801RES MF W4 560R 1%1H1568PSK3STEREO JACK PCB8D3017R
R802RES MF W4 1% 100K1H4107RSK4CAGE CLAMP 16A 3 WAY ARC001-2368Q0017R
R802RES MF W4 3K9 1%1H2398PSK5CAGE CLAMP 16A 1 WAY ARC003-2368Q0037R
R803RES MF W4 1% 2K41H2247RSK6CAGE CLAMP 16A 2WAY 236-402/000-0098Q0057R
R804RES MF W4 1% 5K61H2567RSK7CAGE CLAMP 16A 3 WAY ARC004-2368Q0047R
R805RES MF W4 1% 4K71H2477RSK201IEC MAINS CONN PCB INS PX8A0017R
R805RES MF W4 560R 1%1H1568PSK301PHONO SKT 4-WAY EMC8D2247R
R806RES MF W4 1% 100K1H4107RSK301PHONO SKT 4-WAY EMC GOLD8D2258R/8P
R806RES MF W4 3K9 1%1H2398PSK302PHONO SKT 4-WAY EMC8D2247R
R807RES MF W4 1% 2K41H2247RSK302PHONO SKT 4-WAY EMC GOLD8D2258R/8P
R808RES MF W4 1% 5K61H2567RSK303PHONO SKT 4-WAY EMC8D2247R
R809RES MF W4 1% 100K1H4107RSK303PHONO SKT 4-WAY EMC GOLD8D2258R/8P
R810RES MF W4 1% 100K1H4107RSK304PHONO SKT 4-WAY EMC8D2247R
R811RES MF W4 1% 220R1H1227RSK304PHONO SKT 4-WAY EMC GOLD8D2258R/8P
R812RES MF W4 1% 220R1H1227RSW1SWITCH SLIDE 2WAY C/O PANEL MNT PCBA14038R
R813RES MF W4 1% 22K1H3227RSW201SW PUSH MAINS SDDSA32MZUA10077R
R814RES MF W4 1% 22K1H3227RSW302SW PUSH 4PCOA10138R
R815RES MF W4 1% 1K21H2127RSW305SWITCH SRBU 150 44AA12027R
R816RES MF W4 1% 1K21H2127RSW305SWITCH 4POLE SRBU 5WAYA12128R
R817RES MF W4 18K 1%1H3187RTX1ALPHA 7 AMP MULTI VOLTAGE TRANSFORML835TX7R
R818RES MF W4 1% 8K21H2828PTX1ALPHA 1/5.2 TRANSFORMER 230VL841TXA1
R819RES MF W4 1% 8K21H2828PTX1ALPHA 8 AMP MULTI VOLTAGE TRANSFORML833TX8R/8P
VOLMOTJUMPER 2 W LEAD APL51Y2717R
X901CER RESON CST4.19MG 4.19MHz7W0027R
Y1TX WIRE RESTRAINTF1857R
Y2TX WIRE RESTRAINTF1857R
Z201IC VREG POS 78155D78157R
Z202IC VREG NEG 79155D79157R
Z300IC AUDIO DUAL 4560D5B45607R
Z301IC AUDIO DUAL NE5532N5A5532A1
Z302IC AUDIO DUAL 4560D5B45607R
Z303IC COMPARITOR TA7317P5M73177R
Z304IC AUDIO DUAL 4560D5B45607R
Z305IC AUDIO DUAL NE5532N5A55327R
Z305IC AUDIO DUAL OP2755B2758R
Z801IC HCMOS PC74HC4052P ONLY5F4052P7R
Z901IC SOCKET 18 PIN 0.3

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