Arcam Alpha 9 User manual

ALPHA 9/9P SERVICE MANUALALPHA 9/9P SERVICE MANUAL
ARCAM ALPHA 9/9P SERVICE MANUAL
Issue 1 Serial No. 001 - (Paul Newton July 96)
Circuit Description
Input/Output Selection
The Alpha 9 integrated amplifier has 6 line level
inputs and optional phono input selected by use of
the motorised ‘listen’ switch, SW201.
The use of the 'record' switch SW202 allows
recording of one source whilst listening to another.
The Processor/Tape 2 switch, SW207, allows tape
monitoring of a 3 head tape deck connected to the
Processor/Tape 2 sockets. It can also be used to
allow input signals to be routed to an external
surround decoder for processing before being
routed back to the Alpha 9.
Tone Control & Preamp Out/Power Amp In
The tone control stage on the Alpha 9 is based
around a dual op-amp Z2. The first half provides
abuffer stage for the tone controls and the second
one with its frequency dependent feedback is used
as the tone control itself.
The output of the tone control then passes through
the balance control RV201 and then onto the
power amp stages and the preamp out buffer
stage formed by Z203.
The tone controls and balance pot can be
bypassed by use of the 'direct' switch SW205.
The Alpha 9 can be driven from an external
preamplifier source by moving the internal switch
SW206 to disconnect the Alpha 9 preamp stages
from the power amp.
Power Amplifier
The signal from either the Alpha 9 input sockets or
an external preamp enters the power amp stage
via C12 and R35.
Q11, Q16 form a long, tailed pair driven by the
current source formed by Q18 and Q19.
Q6 is the Class A stage driving the quasi
complementary output stage of Q4, Q5, and
mosfet's Q1, 2.
The Alpha 9 and Alpha 9P utilize an auto bias
circuit to maintain the correct quiescent current
(IQ). The circuit works by monitoring the voltage
across the 0.22 ohm resistors R1, RA1 and
comparing it to a voltage derived from the - 44v rail
via R24. Both these voltage are fed into the inputs
of comparator Z3. If the voltage across the 0.22
ohm resistors increases the output of the
comparator goes high impedance and Q15 is
turned off. This causes capacitor C72 to discharge
and reduce the bias on the base of Q17 which
reduces the IQ. Conversely if the voltage across
the 0.22 ohm resistors is low then Q15 is turned on
more and C72 charges and increases the bias on
Q17 and so increases the IQ. Under signal
conditions a low frequency, variable mark/space
ratio, waveform can be seen on the collector of
transistor Q20 as the bias is being automatically
adjusted.
Z1 is a d.c. servo used to maintain a low d.c. offset
at the speaker outputs.
Power Supplies
The Alpha 9/9P is powered by a toroidal
transformer with 2 sets of secondary windings.
The main windings are used to provide +/-44V
D.C. after rectification and smoothing by diodes
D201-204 inc. reservoir capacitors C201, 202.
The second winding is rectified to provide an
unregulated supply voltage for the motor driver ics,
Z402 (for the volume control) & Z403 (for the listen
selector).This unregulated supply is also smoothed
and regulated with a simple stabilizer circuit (zener
diode D402 and associated components) to
provide a stable voltage for the micro controller
Z401.
Protection/ Mute circuit
The protection and mute functions are carried out
by Z501. This performs turn on delay, d.c. offset
detection and thermal cutout. It also displays the
status of the amplifier with the use of a bicolour
LED - 'Green' for ready and 'Amber' for when the
speakers are disconnected internally because of a
fault condition or on initial power up whilst the 5
second switch on delay mute is operating.
If the unit suffers a current overload the protection
circuit may latch and the unit will not reset until it
has been switched off and on again. If the
protection is activated by a thermal problem the
unit will begin to operate again when it has cooled
down.
The thermal cut out operating point is set by the
thermistor TH501, mounted close to the output
device heatsinks.
Disc Stage (optional)

ALPHA 9/9P SERVICE MANUALALPHA 9/9P SERVICE MANUAL
The optional phono stage board available for the
Alpha 9 provides amplification and RIAA
equalization for both moving coil (MC) and moving
magnet (MM) cartridges.
Transistors Q2-5 and their associated components
provide the extra gain required for moving coil
cartridges when required Z1 forms a flat response
gain stage with the gain set by R3 and R4. R5 and
C2 provide a low pass filter used as the high
frequency part of the RIAA de-emphasis. The
negative feedback loop around IC2, R7, 8, 9, 10
and C3 provides the active low frequency RIAA de-
emphasis.
ThepcbmountedswitchselectsbetweenMMorMC.
The board is powered by +/- 15V regulated rails from
the main pcb and the +15V rail is then regulated to
6.3V by Q1 and D1, D2 to power the moving coil
stage.
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 3 screws holding the pcb to the
chassis. These can be found close to the large
heatsink and also near to 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.
The pcb, with the rear panel, transformer and
subfront attached, can now be pulled backwards out
of the unit.
TEST POINT DC VOLTAGE
TP1 + 5V
TP2 +9.6V
TP3 0V MUTE ON +2V MUTE OFF
TP4 0V VOL UP +5V VOL DOWN
TP5 +5V VOL UP 0V VOL DOWN
TP6 +15V
TP7 -15V
TP8 +44V
TP9 -44V
TEST POINT DC VOLTAGE
TP10 0.5V
TP11 0.5V
TP12 -2V
TP13 -2V
TP14 +2.2V
TP15 +2.2V
TP16 +6.8V
TP17 0V MUTE ON +2V MUTE OFF
The IQ voltage measured across the 0.22 ohm
resistorsR1,RA1orR101,RA101shouldbeabout6-
7 mV.

ALPHA 9/9P SERVICE MANUALALPHA 9/9P SERVICE MANUAL
Alpha 9 Integrated Amplifier Parts List
Ref. No. Description Part No.
C1 ELST 100U 25V 2N710
C2 PEST 47N 63V 5% 2K347
C3 ELST 100U 100V 2N710B
C4 PCRB 100N 100V 5% RA 5mm 2H410
C5 PPRO 680P 5% 63V RA 2D168
C6 PSTY 56P 160V ENCAP 1PF% 2F056
C7 ELST 10U 50V 2N610
C8 ELST 100U 25V 2N710
C9 PEST 15N 63V 5% 2K315
C10 PEST 15N 63V 5% 2K315
C11 PPRO 220P 5% 63V RA 2D122
C12 ELST NON POLAR 10UF 35V 2U610
C13N PPRO 220P 5% 63V RA 2D122
C14N PPRO 220P 5% 63V RA 2D122
C15N ELST 10U 50V 2N610
C16N PCRB 100N 100V 5% RA 5mm 2H410
C17N PCRB 100N 100V 5% RA 5mm 2H410
C18N PPRO 100P 63V 5% RA 2D110N
C19N PPRO 100P 63V 5% RA 2D110N
C20 PEST 15N 63V 5% 2K315
C21N ELST 10U 50V 2N610
C22 PCRB 100N 100V 5% RA 5mm 2H410
C23 PCRB 100N 100V 5% RA 5mm 2H410
C25N PPRO 2N2 5% 63V RA 2D222
C26N ELST 10U 50V 2N610
C71 ELST 10U 50V 2N610
C72 ELST 100U 25V 2N710
C101 ELST 100U 25V 2N710
C102 PEST 47N 63V 5% 2K347
C103 ELST 100U 100V 2N710B
C104 PCRB 100N 100V 5% RA 5mm 2H410
C105 PPRO 680P 5% 63V RA 2D168
Alpha 9 Integrated Amplifier Parts List
Ref. No. Description Part No.
C106 PSTY 56P 160V ENCAP 1PF% 2F056
C107 ELST 10U 50V 2N610
C108 ELST 100U 25V 2N710
C109 PEST 15N 63V 5% 2K315
C110 PEST 15N 63V 5% 2K315
C111 PPRO 220P 5% 63V RA 2D122
C112 ELST NON POLAR 10UF 35V 2U610
C113N PPRO 220P 5% 63V RA 2D122
C114N PPRO 220P 5% 63V RA 2D122
C115N ELST 10U 50V 2N610
C116N PCRB 100N 100V 5% RA 5mm 2H410
C117N PCRB 100N 100V 5% RA 5mm 2H410
C118N PPRO 100P 63V 5% RA 2D110N
C119N PPRO 100P 63V 5% RA 2D110N
C120 PEST 15N 63V 5% 2K315
C121N ELST 10U 50V 2N610
C122 PCRB 100N 100V 5% RA 5mm 2H410
C123 PCRB 100N 100V 5% RA 5mm 2H410
C125N PPRO 2N2 5% 63V RA 2D222
C126N ELST 10U 50V 2N610
C172 ELST 100U 25V 2N710
C173 ELST 100U 25V 2N710
C201 ELST 10m 50V RA 32mm 2N910
C202 ELST 10m 50V RA 32mm 2N910
C205 PPRO 4N7 63V 5% RA 2D247N
C206 PPRO 4N7 63V 5% RA 2D247N
C207 ELST 10U 50V 2N610
C208 ELST 10U 50V 2N610
C209 ELST 10U 50V 2N610
C210 ELST 10U 50V 2N610
C301N CERD 1N0 63V 20% RA 2A210
C401N ELST 1M0 25V 2N810

ALPHA 9/9P SERVICE MANUALALPHA 9/9P SERVICE MANUAL
C402N CERD 10N 63V 20% RA 2A310
C403N ELST 1M0 25V 2N810
C404 CERD 10N 63V 20% RA 2A310
C405N CERD 10N 63V 20% RA 2A310
C406N CERD 10N 63V 20% RA 2A310
C407N CERD 10N 63V 20% RA 2A310
C408N CERD 10N 63V 20% RA 2A310
C409N CERD 10N 63V 20% RA 2A310
C410N ELST 10U 50V 2N610
C411N ELST 1U0 50V 20% RA 2N510
C501 ELST 100U 25V 2N710
C502 ELST 1U0 50V 20% RA 2N510
C503 ELST 100U 25V 2N710
C504 ELST 1U0 50V 20% RA 2N510
C505 SUPPR CAP 4N7 250V 2K247
C506 CERD 10N 63V 20% RA 2A310
C507 CERD 1N0 63V 20% RA 2A210
C508 CERD 1N0 63V 20% RA 2A210
C509 CERD 1N0 63V 20% RA 2A210
C510 CERD 1N0 63V 20% RA 2A210
C511 CERD 1N0 63V 20% RA 2A210
C512 CERD 1N0 63V 20% RA 2A210
C601N PPRO 220P 5% 63V RA 2D122
C602N PEST 15N 63V 5% 2K315
C603N CERD 10N 63V 20% RA 2A310
D1 ZENER 10V 400MW 3C11004
D2 RECTIFIER 1N4003F 1A 200V 3B4003
D3 ZENER 10V 400MW 3C11004
D4 ZENER 10V 400MW 3C11004
D5 ZENER 5V6 400MW 3C05604
D6 ZENER 22V 400MW 3C22004
D101 ZENER 10V 400MW 3C11004
D102 RECTIFIER 1N4003F 1A 200V 3B4003
D103 ZENER 10V 400MW 3C11004
D104 ZENER 10V 400MW 3C11004
D106 ZENER 22V 400MW 3C22004
D201 RECTIFIER MUR420 4A 220V 3B420
D202 RECTIFIER MUR420 4A 220V 3B420
D203 RECTIFIER MUR420 4A 220V 3B420
D204 RECTIFIER MUR420 4A 220V 3B420
D401N RECTIFIER 1N4003F 1A 200V 3B4003
D402N ZENER 5V6 400MW 3C05604
D403N RECTIFIER 1N4003F 1A 200V 3B4003
D404N ZENER 5V6 400MW 3C05604
D405N ZENER 5V6 400MW 3C05604
D406N SSDIODE 1N4148 75V 3A4148
D407N RECTIFIER 1N4003F 1A 200V 3B4003
D408N ZENER 5V6 400MW 3C05604
D501 RECTIFIER 1N4003F 1A 200V 3B4003
D502 RECTIFIER 1N4003F 1A 200V 3B4003
D503 RECTIFIER 1N4003F 1A 200V 3B4003
D504 RECTIFIER 1N4003F 1A 200V 3B4003
D505N RECTIFIER 1N4003F 1A 200V 3B4003
D602 ZENER 5V6 400MW 3C05604
F501 INS COVER PCB FUSEHOLDER F022
F501 FUSEHOLDER 20mm PCB 8S004
F501 SPARE FUSE 20mm 1.6A AS C12166
FS502 INS COVER PCB FUSEHOLDER F022
FS502 FUSEHOLDER 20mm PCB 8S004
HS1 ALPHA9 & AV50 HEATSINK E801HK
HS201 HEATSINK TO220 13 DEGC/W F005
HS201 HEATSINK CLIP TO220 13/8.6 DC/W F006
HS202 HEATSINK TO220 CLIP 23DEG/W F004
KP1 KWIKSTIK PAD S/A 25 X 12mm F157S
KP2 KWIKSTIK PAD S/A 25 X 12mm F157S
L1 INDUCT 2U2 15x25mm AD2018 7D002A
L101 INDUCT 2U2 15x25mm AD2018 7D002A
LED601 LED RED/GREEN 5MM 3D002

ALPHA 9/9P SERVICE MANUALALPHA 9/9P SERVICE MANUAL
LK401N JUMPER 3 WAY x 125mm L815CA
LK501N LINK BANDOL PREFORM 10mm 1X010A
LK601 JUMPER 3 WAY x 125mm L815CA
MI MAINS SWITCH SD33P INSULATOR E00301
MS MAINS SWITCH SPACER E66901
PL1N 2WAY MOLEX VERT MALE CONNECTOR 8K6201
Q1 TRANS POWER MOSFET IRPF240 4K240
Q2 TRANS POWER MOSFET IRPF240 4K240
Q3 TRANS LF SS P 2SA1085 4A1085
Q4 TRANS LF SS N 2SC2547 4A2546
Q5 TRANS LF SS P 2SA1085 4A1085
Q6 TRANS LF SS P BC556B 4A556
Q7 TRANS LF SS N BC546B 4A546
Q8 TRANS LF SS P BC556B 4A556
Q9 TRANS LF SS N BC546B 4A546
Q10 TRANS LF SS P BC557B 4A557
Q11 TRANS LF SS N BC547B 4A547
Q12 TRANS LF SS N 2SC2547 4A2546
Q13 TRANS LF SS P BC557B 4A557
Q14 TRANS LF SS N 2SC2547 4A2546
Q15 TRANS LF SS P BC557B 4A557
Q16 TRANS LF SS N BC547B 4A547
Q17 TRANS LF SS N BC547B 4A547
Q18 TRANS LF SS N BC547B 4A547
Q19 TRANS LF SS N BC547B 4A547
Q20 TRANS LF SS N BC547B 4A547
Q101 TRANS POWER MOSFET IRPF240 4K240
Q102 TRANS POWER MOSFET IRPF240 4K240
Q103 TRANS LF SS P 2SA1085 4A1085
Q104 TRANS LF SS N 2SC2547 4A2546
Q105 TRANS LF SS P 2SA1085 4A1085
Q106 TRANS LF SS P BC556B 4A556
Q107 TRANS LF SS N BC546B 4A546
Q108 TRANS LF SS P BC556B 4A556
Q109 TRANS LF SS N BC546B 4A546
Q110 TRANS LF SS P BC557B 4A557
Q111 TRANS LF SS N BC547B 4A547
Q112 TRANS LF SS N 2SC2547 4A2546
Q113 TRANS LF SS P BC557B 4A557
Q114 TRANS LF SS N 2SC2547 4A2546
Q115 TRANS LF SS P BC557B 4A557
Q116 TRANS LF SS N BC547B 4A547
Q117 TRANS LF SS N BC547B 4A547
Q118 TRANS LF SS N BC547B 4A547
Q119 TRANS LF SS N BC547B 4A547
Q120 TRANS LF SS N BC547B 4A547
Q121 TRANS LF SS P 2SA1085 4A1085
Q401N TRANS LF SS N BC547B 4A547
Q402N TRANS LF SS P BC557B 4A557
Q403N TRANS LF SS P BC557B 4A557
Q502 TRANS LF SS N 2SC2547 4A2546
R1 RES MO 3W 5% 0R22 KOASPR3 1Q922
R2 RES CF 1W 1R5 5% 1E815
R3 RES CF 1W 5R6 5% 1E856
R4 RES MF FU W3 100R 5% NFR25 1G110
R5 RES MF W4 470R 1% 1H147
R6 RES MF FU W3 100R 5% NFR25 1G110
R7 RES MF W4 470R 1% 1H147
R8 RES MF FU W3 100R 5% NFR25 1G110
R9 RES MF W4 1K0 1% 1H210
R10 RES MF W4 1K0 1% 1H210
R11 RES MF FU W3 220R 5% NFR25 1G122
R12 RES MF FU W3 220R 5% NFR25 1G122
R13 RES MF FU W3 470R 5% NFR25 1G147
R14 RES MF FU W3 470R 5% NFR25 1G147
R15 RES MF W4 1K0 1% 1H210
R16 RES MF W4 18K 1% 1H318
R17 RES MF W4 5K6 1% 1H256

ALPHA 9/9P SERVICE MANUALALPHA 9/9P SERVICE MANUAL
R18 RES MF W4 2K7 1% 1H227
R19 RES MF W4 2K7 1% 1H227
R20 RES MF W4 4K7 1% 1H247
R21 RES MF W4 330R 1% 1H133
R22 RES MF W4 2K7 1% 1H227
R23 RES MF W4 100R 1% 1H110
R24 RES MF W4 220K 1% 1H422
R25 RES MF W4 18K 1% 1H318
R26 RES MF W4 2K7 1% 1H227
R27 RES MF W4 5K6 1% 1H256
R28 RES MF FU W3 10R 5% NFR25 1G010
R29 RES MF FU W3 470R 5% NFR25 1G147
R30 RES MF W4 100K 1% 1H410
R31 RES MF W4 120K 1% 1H412
R32 RES MF W4 47K 1% 1H347
R33 RES MF W4 470K 1% 1H447
R34 RES MF W4 47K 1% 1H347
R35 RES MF W4 2K7 1% 1H227
R36N RES MF W4 5K6 1% 1H256
R37N RES MF W4 6K8 1% 1H268
R38N RES MF W4 6K8 1% 1H268
R39N RES MF W4 12K 1% 1H312
R40N RES MF W4 6K8 1% 1H268
R41N RES MF W4 10K 1% 1H310
R42N RES MF W4 12K 1% 1H312
R43N RES MF W4 470R 1% 1H147
R46N RES MF W4 100K 1% 1H410
R47N RES MF W4 4K7 1% 1H247
R48N RES MF W4 4K7 1% 1H247
R49N RES MF W4 1K8 1% 1H218
R50N RES MF W4 6K8 1% 1H268
R51N RES MF W4 100R 1% 1H110
R52 RES MF W4 6K8 1% 1H268
R53 RES MF W4 2K2 1% 1H222
R54N RES MF W4 1K8 1% 1H218
R55N RES MF W4 1K0 1% 1H210
R56 RES MF W4 56R 1% 1H056
R57N RES MF W4 100K 1% 1H410
R58 RES MF W4 330R 1% 1H133
R59 RES MF W4 27K 1% 1H327
R60 RES MF W4 1K0 1% 1H210
R61 RES MF W4 33K 1% 1H333
R62N RES MF W4 820R 1% 1H182
R71 RES MF W4 15K 1% 1H315
R72 RES MF W4 15K 1% 1H315
R73 RES MF W4 15K 1% 1H315
R74 RES MF W4 15K 1% 1H315
R75 RES MF W4 10K 1% 1H310
R76 RES MF W4 12K 1% 1H312
R77 RES MF W4 220K 1% 1H422
R78 RES MF W4 120K 1% 1H412
R79 RES MF W4 33K 1% 1H333
R80 RES MF W4 1K5 1% 1H215
R81 RES MF W4 2K2 1% 1H222
R82 RES MF W4 100R 1% 1H110
R83 RES MF W4 4K7 1% 1H247
R84 RES MF W4 18K 1% 1H318
R101 RES MO 3W 5% 0R22 KOASPR3 1Q922
R102 RES CF 1W 1R5 5% 1E815
R103 RES CF 1W 5R6 5% 1E856
R104 RES MF FU W3 100R 5% NFR25 1G110
R105 RES MF W4 470R 1% 1H147
R106 RES MF FU W3 100R 5% NFR25 1G110
R107 RES MF W4 470R 1% 1H147
R108 RES MF FU W3 100R 5% NFR25 1G110
R109 RES MF W4 1K0 1% 1H210
R110 RES MF W4 1K0 1% 1H210
R111 RES MF FU W3 220R 5% NFR25 1G122

ALPHA 9/9P SERVICE MANUALALPHA 9/9P SERVICE MANUAL
R112 RES MF FU W3 220R 5% NFR25 1G122
R113 RES MF FU W3 470R 5% NFR25 1G147
R114 RES MF FU W3 470R 5% NFR25 1G147
R115 RES MF W4 1K0 1% 1H210
R116 RES MF W4 18K 1% 1H318
R117 RES MF W4 5K6 1% 1H256
R118 RES MF W4 2K7 1% 1H227
R119 RES MF W4 2K7 1% 1H227
R120 RES MF W4 4K7 1% 1H247
R121 RES MF W4 330R 1% 1H133
R122 RES MF W4 2K7 1% 1H227
R123 RES MF W4 100R 1% 1H110
R124 RES MF W4 220R 1% 1H122
R125 RES MF W4 18K 1% 1H318
R126 RES MF W4 2K7 1% 1H227
R127 RES MF W4 5K6 1% 1H256
R128 RES MF FU W3 10R 5% NFR25 1G010
R129 RES MF FU W3 470R 5% NFR25 1G147
R130 RES MF W4 100K 1% 1H410
R131 RES MF W4 120K 1% 1H412
R132 RES MF W4 47K 1% 1H347
R133 RES MF W4 470K 1% 1H447
R134 RES MF W4 47K 1% 1H347
R135 RES MF W4 2K7 1% 1H227
R136N RES MF W4 5K6 1% 1H256
R137N RES MF W4 6K8 1% 1H268
R138N RES MF W4 6K8 1% 1H268
R139N RES MF W4 12K 1% 1H312
R140N RES MF W4 6K8 1% 1H268
R141N RES MF W4 10K 1% 1H310
R142N RES MF W4 12K 1% 1H312
R143N RES MF W4 470R 1% 1H147
R146N RES MF W4 100K 1% 1H410
R147N RES MF W4 4K7 1% 1H247
R148N RES MF W4 4K7 1% 1H247
R149N RES MF W4 1K8 1% 1H218
R150N RES MF W4 6K8 1% 1H268
R151N RES MF W4 100R 1% 1H110
R152 RES MF W4 6K8 1% 1H268
R153 RES MF W4 2K2 1% 1H222
R154N RES MF W4 1K8 1% 1H218
R155N RES MF W4 1K0 1% 1H210
R156 RES MF W4 56R 1% 1H056
R157N RES MF W4 100K 1% 1H410
R158 RES MF W4 330R 1% 1H133
R159 RES MF W4 27K 1% 1H327
R160 RES MF W4 1K0 1% 1H210
R161 RES MF W4 33K 1% 1H333
R162N RES MF W4 820R 1% 1H182
R173 RES MF W4 15K 1% 1H315
R174 RES MF W4 15K 1% 1H315
R175 RES MF W4 10K 1% 1H310
R176 RES MF W4 12K 1% 1H312
R177 RES MF W4 220K 1% 1H422
R178 RES MF W4 120K 1% 1H412
R179 RES MF W4 33K 1% 1H333
R180 RES MF W4 1K5 1% 1H215
R181 RES MF W4 2K2 1% 1H222
R182 RES MF W4 100R 1% 1H110
R183 RES MF W4 4K7 1% 1H247
R184 RES MF W4 18K 1% 1H318
R185 RES MF W4 47K 1% 1H347
R201 RES MF W4 2K4 1% 1H224
R202 RES MF W4 220R 1% 1H122
R203 RES MF W4 2K4 1% 1H224
R204 RES MF W4 220R 1% 1H122
R205 RES MF FU W3 10R 5% NFR25 1G010
R206 RES MF FU W3 10R 5% NFR25 1G010

ALPHA 9/9P SERVICE MANUALALPHA 9/9P SERVICE MANUAL
R207 RES MF FU W3 10R 5% NFR25 1G010
R401N RES MF FU W3 10R 5% NFR25 1G010
R402N RES MF W4 1K0 1% 1H210
R403N RES MF W4 1K0 1% 1H210
R404 RES MF FU W3 1R0 5% NFR25 1G810
R405N RES MF W4 1K0 1% 1H210
R406N RES MF W4 4K7 1% 1H247
R407N RES MF W4 4K7 1% 1H247
R408N RES MF W4 470R 1% 1H147
R410N RES CF 1W 2K7 5% 1E227
R501 RES MF W4 47K 1% 1H347
R502 RES MF W4 47K 1% 1H347
R503 RES MF W4 100R 1% 1H110
R504 RES MF W4 47K 1% 1H347
R505 RES MF W4 47K 1% 1H347
R506 RES MF W4 100K 1% 1H410
R507 RES MF W4 18K 1% 1H318
R508 RES MF W4 47K 1% 1H347
R509 RES MF W4 47K 1% 1H347
R510 RES MF W4 100K 1% 1H410
R511 RES MF W4 18K 1% 1H318
R512 RES MF W4 18K 1% 1H318
R513 RES MF W4 33K 1% 1H333
R514 RES MF W4 47K 1% 1H347
R515 RES CF 1W 1K0 5% 1E210
R516 RES CF 1W 1K0 5% 1E210
R517 RES CF 1W 2K7 5% 1E227
R518 RES CF 1W 2K7 5% 1E227
R519 RES CF 1W 330R 5% 1E133
R520 RES CF 1W 330R 5% 1E133
R521N RES CF 1W 2K7 5% 1E227
R524 RES MF W4 18K 1% 1H318
R525 RES CF W2 100R 5% 1D110
R526 RES CF W2 100R 5% 1D110
R527 RES MF W4 10R 1% 1H010
R601N RES MF W4 22R 1% 1H022
R602N RES MF W4 22R 1% 1H022
R603N RES MF W4 6K8 1% 1H268
R604N RES MF W4 2K2 1% 1H222
R605N RES MF W4 6K8 1% 1H268
R606N RES MF W4 2K2 1% 1H222
RA1 RES MO 3W 5% 0R22 KOASPR3 1Q922
RA101 RES MO 3W 5% 0R22 KOASPR3 1Q922
RLY401N RELAY 960 OHM 51SB12T A205
RLY501 RELAY G5Z-2A-E 24V A207
RLY502 RELAY G5Z-2A-E 24V A207
RLY503N RELAY 960 OHM 51SB12T A205
RP401N RES NETWORK 100Kx8 COMMON 1V410
RV201N POT 20KA* 2 LIN A 6A320E
RV202N POT 20KA* 2 LIN A 6A320E
RV203N POT 20KA* 2 LIN A 6A320E
RV601N POT 20KA* 2 LOG A MOTORISED 6A330M
RX1N REMOTE CONTROL RECEIVER SBX1610-62 38KHZ B2103
SK501 BINDING POST 4WAY GOLD LTS04102002G 8D416
SK502 BINDING POST 4WAY GOLD LTS04102002G 8D416
SK201N PRESSACTL 8-WAY MALE VERT 8K5181
SK301N PHONO SKT 4-WAY EMC GOLD 8D225
SK302N PHONO SKT 4-WAY EMC GOLD 8D225
SK303N PHONO SKT 4-WAY EMC GOLD 8D225
SK304N PHONO SKT 4-WAY EMC GOLD 8D225
SK305 PHONO SKT 4-WAY EMC GOLD 8D225
SK503 IEC MAINS CONN PCB INS PX 8A001
SK504 STEREO JACK PCB 8D301
SK601N JUMPER 2 W LEAD APL5 1Y271
SK602N JUMPER 8-WAY LEAD L809CA
SPRFS SPARE FUSEHOLDER F062
SPRFS SPARE FUSE 20mm 1.6A AS C12166
SW201N SWITCH ROTARY 6W MOTOR A1207

ALPHA 9/9P SERVICE MANUALALPHA 9/9P SERVICE MANUAL
SW202N SW ROTARY 6W 4 POLE A1210
SW205N SW PUSH 2PCO A1008
SW206N 2PC SLIDER SW MSS2200 A1401
SW207N SW PUSH 4PCO A1013
SW402N 2PC R/A SLIDE SW A1402
SW501 SW PUSH 2PCO A1008
SW502 SW PUSH 2PCO A1008
SW503 SWITCH PUSH MAINS OPST SDS3P A1006
TC1 TRANSFORMER CLAMP E00201
TC2 TRANSFORMER CLAMP E00201
TH501 THERMISTOR SIEMENS B59008 1T002
TX1 ALPHA9 MULTI VOLTAGE TRANSFORMER L817TX
X401N CER RESON CST4.19MG 4.19MHz 7W002
Y2 TX WIRE RESTRAINT F185
Y3 TX WIRE RESTRAINT F185
Y20 COPPER RIVET HP007
Y21 COPPER RIVET HP007
Z1 IC AUDIO NE5534N 5A5534
Z2N IC AUDIO DUAL JRC4560 5B4560
Z3 IC COMPARITOR DUAL LM393A 5M393A
Z101 IC AUDIO NE5534N 5A5534
Z102N IC AUDIO DUAL JRC4560 5B4560
Z201 IC VREG POS LM317T 5D317T
Z202 IC VREG POS LM337T 5D337
Z203N IC AUDIO DUAL TL072 5B072
Z401N IC SOCKET 18 PIN 0.3'' 8S018
Z401N IC CMOS MICRO PIC16C54XT/P 5H16C54X
Z402N MOTOR DRIVER 5Q6109 5Q6109
Z403N MOTOR DRIVER 5Q6109 5Q6109
Z501 IC COMPARITOR TA7317P 5M7317
Alpha 9 Amplifier Non PCB Parts, Metalwork etc.
Part No. Description
B3002 AA BATTERY FOR REMOTE CONTROL
E66801 REAR PHONO INPUT BLANKING PLATE
E802CH CHASSIS
E802MI PCB INSULATOR
E803SP ALPHA 9/9P AMP SUBPANEL
E804AP FELT RING
E804CP ALPHA 9/9P COVERPLATE
E808RP REAR PANEL
E813FP ALPHA 9 FASCIA
E815PM POWER BUTTON
E818PM VOLUME KNOB
E819PM BALANCE/TREBLE/BASS KNOB
E820PM LISTEN KNOB
E822PM FOOT
E825PM ALPHA 9 BADGE
E901HK HEATSINK ANODISED
F037 TOROIDIAL TRANSFORMER CLAMP
F038 RUBBER WASHER FOR ABOVE
HA6K55A TRANSFORMER BOLT
L802RC HANDI REMOTE CONTROL
SH053 OWNERS HANDBOOK
SH058 WARRANTY LEAFLET

ALPHA 9/9P SERVICE MANUALALPHA 9/9P SERVICE MANUAL
Alpha 9P Power Amplifier Parts List
Ref. No. Description Part No.
C1 ELST 100U 25V 2N710
C2 PEST 47N 63V 5% 2K347
C3 ELST 100U 100V 2N710B
C4 PCRB 100N 100V 5% RA 5mm 2H410
C5 PPRO 680P 5% 63V RA 2D168
C6 PSTY 56P 160V ENCAP 1PF% 2F056
C7 ELST 10U 50V 2N610
C8 ELST 100U 25V 2N710
C9 PEST 15N 63V 5% 2K315
C10 PEST 15N 63V 5% 2K315
C11 PPRO 220P 5% 63V RA 2D122
C12 ELST NON POLAR 10UF 35V 2U610
C20 PEST 15N 63V 5% 2K315
C22 PCRB 100N 100V 5% RA 5mm 2H410
C23 PCRB 100N 100V 5% RA 5mm 2H410
C71 ELST 10U 50V 2N610
C72 ELST 100U 25V 2N710
C101 ELST 100U 25V 2N710
C102 PEST 47N 63V 5% 2K347
C103 ELST 100U 100V 2N710B
C104 PCRB 100N 100V 5% RA 5mm 2H410
C105 PPRO 680P 5% 63V RA 2D168
C106 PSTY 56P 160V ENCAP 1PF% 2F056
C107 ELST 10U 50V 2N610
C108 ELST 100U 25V 2N710
C109 PEST 15N 63V 5% 2K315
C110 PEST 15N 63V 5% 2K315
C111 PPRO 220P 5% 63V RA 2D122
C112 ELST NON POLAR 10UF 35V 2U610
C120 PEST 15N 63V 5% 2K315
C122 PCRB 100N 100V 5% RA 5mm 2H410
C123 PCRB 100N 100V 5% RA 5mm 2H410
Alpha 9P Power Amplifier Parts List
Ref. No. Description Part No.
C172 ELST 100U 25V 2N710
C173 ELST 100U 25V 2N710
C201 ELST 10m 50V RA 32mm 2N910
C202 ELST 10m 50V RA 32mm 2N910
C205 PPRO 4N7 63V 5% RA 2D247N
C206 PPRO 4N7 63V 5% RA 2D247N
C207 ELST 10U 50V 2N610
C208 ELST 10U 50V 2N610
C209 ELST 10U 50V 2N610
C210 ELST 10U 50V 2N610
C404 CERD 10N 63V 20% RA 2A310
C501 ELST 100U 25V 2N710
C502 ELST 1U0 50V 20% RA 2N510
C503 ELST 100U 25V 2N710
C504 ELST 1U0 50V 20% RA 2N510
C505 SUPPR CAP 4N7 250V 2K247
C506 CERD 10N 63V 20% RA 2A310
C507 CERD 1N0 63V 20% RA 2A210
C508 CERD 1N0 63V 20% RA 2A210
C509 CERD 1N0 63V 20% RA 2A210
C510 CERD 1N0 63V 20% RA 2A210
C511 CERD 1N0 63V 20% RA 2A210
C512 CERD 1N0 63V 20% RA 2A210
D1 ZENER 10V 400MW 3C11004
D2 RECTIFIER 1N4003F 1A 200V 3B4003
D3 ZENER 10V 400MW 3C11004
D4 ZENER 10V 400MW 3C11004
D5 ZENER 5V6 400MW 3C05604
D6 ZENER 22V 400MW 3C22004
D101 ZENER 10V 400MW 3C11004
D102 RECTIFIER 1N4003F 1A 200V 3B4003
D103 ZENER 10V 400MW 3C11004

ALPHA 9/9P SERVICE MANUALALPHA 9/9P SERVICE MANUAL
D104 ZENER 10V 400MW 3C11004
D106 ZENER 22V 400MW 3C22004
D201 RECTIFIER MUR420 4A 220V 3B420
D202 RECTIFIER MUR420 4A 220V 3B420
D203 RECTIFIER MUR420 4A 220V 3B420
D204 RECTIFIER MUR420 4A 220V 3B420
D501 RECTIFIER 1N4003F 1A 200V 3B4003
D502 RECTIFIER 1N4003F 1A 200V 3B4003
D503 RECTIFIER 1N4003F 1A 200V 3B4003
D504 RECTIFIER 1N4003F 1A 200V 3B4003
D602 ZENER 5V6 400MW 3C05604
F501 FUSEHOLDER 20mm PCB 8S004
F501 INS COVER PCB FUSEHOLDER F022
F501 SPARE FUSE 20mm 1.6A AS C12166
FS502 FUSEHOLDER 20mm PCB 8S004
FS502 INS COVER PCB FUSEHOLDER F022
HS1 ALPHA9 & AV50 HEATSINK E801HK
HS201 HEATSINK CLIP TO220 13/8.6 DC/W F006
HS201 HEATSINK TO220 13 DEGC/W F005
HS202 HEATSINK TO220 CLIP 23DEG/W F004
KP1 KWIKSTIK PAD S/A 25 X 12mm F157S
KP2 KWIKSTIK PAD S/A 25 X 12mm F157S
L1 INDUCT 2U2 15x25mm AD2018 7D002A
L101 INDUCT 2U2 15x25mm AD2018 7D002A
LED601 LED RED/GREEN 5MM 3D002
LK1P LINK BANDOL PREFORM 10mm 1X010A
LK2P LINK BANDOL PREFORM 10mm 1X010A
LK3P LINK BANDOL PREFORM 10mm 1X010A
LK4P LINK BANDOL PREFORM 10mm 1X010A
LK502P LINK BANDOL PREFORM 10mm 1X010A
LK601 JUMPER 3 WAY x 125mm L815CA
MI MAINS SWITCH SD33P INSULATOR E00301
MS MAINS SWITCH SPACER E66901
Q1 TRANS POWER MOSFET IRPF240 4K240
Q2 TRANS POWER MOSFET IRPF240 4K240
Q3 TRANS LF SS P 2SA1085 4A1085
Q4 TRANS LF SS N 2SC2547 4A2546
Q5 TRANS LF SS P 2SA1085 4A1085
Q6 TRANS LF SS P BC556B 4A556
Q7 TRANS LF SS N BC546B 4A546
Q8 TRANS LF SS P BC556B 4A556
Q9 TRANS LF SS N BC546B 4A546
Q10 TRANS LF SS P BC557B 4A557
Q11 TRANS LF SS N BC547B 4A547
Q12 TRANS LF SS N 2SC2547 4A2546
Q13 TRANS LF SS P BC557B 4A557
Q14 TRANS LF SS N 2SC2547 4A2546
Q15 TRANS LF SS P BC557B 4A557
Q16 TRANS LF SS N BC547B 4A547
Q17 TRANS LF SS N BC547B 4A547
Q18 TRANS LF SS N BC547B 4A547
Q19 TRANS LF SS N BC547B 4A547
Q20 TRANS LF SS N BC547B 4A547
Q101 TRANS POWER MOSFET IRPF240 4K240
Q102 TRANS POWER MOSFET IRPF240 4K240
Q103 TRANS LF SS P 2SA1085 4A1085
Q104 TRANS LF SS N 2SC2547 4A2546
Q105 TRANS LF SS P 2SA1085 4A1085
Q106 TRANS LF SS P BC556B 4A556
Q107 TRANS LF SS N BC546B 4A546
Q108 TRANS LF SS P BC556B 4A556
Q109 TRANS LF SS N BC546B 4A546
Q110 TRANS LF SS P BC557B 4A557
Q111 TRANS LF SS N BC547B 4A547
Q112 TRANS LF SS N 2SC2547 4A2546
Q113 TRANS LF SS P BC557B 4A557
Q114 TRANS LF SS N 2SC2547 4A2546
Q115 TRANS LF SS P BC557B 4A557

ALPHA 9/9P SERVICE MANUALALPHA 9/9P SERVICE MANUAL
Q116 TRANS LF SS N BC547B 4A547
Q117 TRANS LF SS N BC547B 4A547
Q118 TRANS LF SS N BC547B 4A547
Q119 TRANS LF SS N BC547B 4A547
Q120 TRANS LF SS N BC547B 4A547
Q121 TRANS LF SS P 2SA1085 4A1085
Q502 TRANS LF SS N 2SC2547 4A2546
R1 RES MO 3W 5% 0R22 KOASPR3 1Q922
R2 RES CF 1W 1R5 5% 1E815
R3 RES CF 1W 5R6 5% 1E856
R4 RES MF FU W3 100R 5% NFR25 1G110
R5 RES MF W4 470R 1% 1H147
R6 RES MF FU W3 100R 5% NFR25 1G110
R7 RES MF W4 470R 1% 1H147
R8 RES MF FU W3 100R 5% NFR25 1G110
R9 RES MF W4 1K0 1% 1H210
R10 RES MF W4 1K0 1% 1H210
R11 RES MF FU W3 220R 5% NFR25 1G122
R12 RES MF FU W3 220R 5% NFR25 1G122
R13 RES MF FU W3 470R 5% NFR25 1G147
R14 RES MF FU W3 470R 5% NFR25 1G147
R15 RES MF W4 1K0 1% 1H210
R16 RES MF W4 18K 1% 1H318
R17 RES MF W4 5K6 1% 1H256
R18 RES MF W4 2K7 1% 1H227
R19 RES MF W4 2K7 1% 1H227
R20 RES MF W4 4K7 1% 1H247
R21 RES MF W4 330R 1% 1H133
R22 RES MF W4 2K7 1% 1H227
R23 RES MF W4 100R 1% 1H110
R24 RES MF W4 220K 1% 1H422
R25 RES MF W4 18K 1% 1H318
R26 RES MF W4 2K7 1% 1H227
R27 RES MF W4 5K6 1% 1H256
R28 RES MF FU W3 10R 5% NFR25 1G010
R29 RES MF FU W3 470R 5% NFR25 1G147
R30 RES MF W4 100K 1% 1H410
R31 RES MF W4 120K 1% 1H412
R32 RES MF W4 47K 1% 1H347
R33 RES MF W4 470K 1% 1H447
R34 RES MF W4 47K 1% 1H347
R35 RES MF W4 2K7 1% 1H227
R52 RES MF W4 6K8 1% 1H268
R53 RES MF W4 2K2 1% 1H222
R56 RES MF W4 56R 1% 1H056
R58 RES MF W4 330R 1% 1H133
R59 RES MF W4 27K 1% 1H327
R60 RES MF W4 1K0 1% 1H210
R61 RES MF W4 33K 1% 1H333
R71 RES MF W4 15K 1% 1H315
R72 RES MF W4 15K 1% 1H315
R73 RES MF W4 15K 1% 1H315
R74 RES MF W4 15K 1% 1H315
R75 RES MF W4 10K 1% 1H310
R76 RES MF W4 12K 1% 1H312
R77 RES MF W4 220K 1% 1H422
R78 RES MF W4 120K 1% 1H412
R79 RES MF W4 33K 1% 1H333
R80 RES MF W4 1K5 1% 1H215
R81 RES MF W4 2K2 1% 1H222
R82 RES MF W4 100R 1% 1H110
R83 RES MF W4 4K7 1% 1H247
R84 RES MF W4 18K 1% 1H318
R101 RES MO 3W 5% 0R22 KOASPR3 1Q922
R102 RES CF 1W 1R5 5% 1E815
R103 RES CF 1W 5R6 5% 1E856
R104 RES MF FU W3 100R 5% NFR25 1G110
R105 RES MF W4 470R 1% 1H147

ALPHA 9/9P SERVICE MANUALALPHA 9/9P SERVICE MANUAL
R106 RES MF FU W3 100R 5% NFR25 1G110
R107 RES MF W4 470R 1% 1H147
R108 RES MF FU W3 100R 5% NFR25 1G110
R109 RES MF W4 1K0 1% 1H210
R110 RES MF W4 1K0 1% 1H210
R111 RES MF FU W3 220R 5% NFR25 1G122
R112 RES MF FU W3 220R 5% NFR25 1G122
R113 RES MF FU W3 470R 5% NFR25 1G147
R114 RES MF FU W3 470R 5% NFR25 1G147
R115 RES MF W4 1K0 1% 1H210
R116 RES MF W4 18K 1% 1H318
R117 RES MF W4 5K6 1% 1H256
R118 RES MF W4 2K7 1% 1H227
R119 RES MF W4 2K7 1% 1H227
R120 RES MF W4 4K7 1% 1H247
R121 RES MF W4 330R 1% 1H133
R122 RES MF W4 2K7 1% 1H227
R123 RES MF W4 100R 1% 1H110
R124 RES MF W4 220R 1% 1H122
R125 RES MF W4 18K 1% 1H318
R126 RES MF W4 2K7 1% 1H227
R127 RES MF W4 5K6 1% 1H256
R128 RES MF FU W3 10R 5% NFR25 1G010
R129 RES MF FU W3 470R 5% NFR25 1G147
R130 RES MF W4 100K 1% 1H410
R131 RES MF W4 120K 1% 1H412
R132 RES MF W4 47K 1% 1H347
R133 RES MF W4 470K 1% 1H447
R134 RES MF W4 47K 1% 1H347
R135 RES MF W4 2K7 1% 1H227
R152 RES MF W4 6K8 1% 1H268
R153 RES MF W4 2K2 1% 1H222
R156 RES MF W4 56R 1% 1H056
R158 RES MF W4 330R 1% 1H133
R159 RES MF W4 27K 1% 1H327
R160 RES MF W4 1K0 1% 1H210
R161 RES MF W4 33K 1% 1H333
R173 RES MF W4 15K 1% 1H315
R174 RES MF W4 15K 1% 1H315
R175 RES MF W4 10K 1% 1H310
R176 RES MF W4 12K 1% 1H312
R177 RES MF W4 220K 1% 1H422
R178 RES MF W4 120K 1% 1H412
R179 RES MF W4 33K 1% 1H333
R180 RES MF W4 1K5 1% 1H215
R181 RES MF W4 2K2 1% 1H222
R182 RES MF W4 100R 1% 1H110
R183 RES MF W4 4K7 1% 1H247
R184 RES MF W4 18K 1% 1H318
R185 RES MF W4 47K 1% 1H347
R201 RES MF W4 2K4 1% 1H224
R202 RES MF W4 220R 1% 1H122
R203 RES MF W4 2K4 1% 1H224
R204 RES MF W4 220R 1% 1H122
R205 RES MF FU W3 10R 5% NFR25 1G010
R206 RES MF FU W3 10R 5% NFR25 1G010
R207 RES MF FU W3 10R 5% NFR25 1G010
R404 RES MF FU W3 1R0 5% NFR25 1G810
R501 RES MF W4 47K 1% 1H347
R502 RES MF W4 47K 1% 1H347
R503 RES MF W4 100R 1% 1H110
R504 RES MF W4 47K 1% 1H347
R505 RES MF W4 47K 1% 1H347
R506 RES MF W4 100K 1% 1H410
R507 RES MF W4 18K 1% 1H318
R508 RES MF W4 47K 1% 1H347
R509 RES MF W4 47K 1% 1H347
R510 RES MF W4 100K 1% 1H410

ALPHA 9/9P SERVICE MANUALALPHA 9/9P SERVICE MANUAL
R511 RES MF W4 18K 1% 1H318
R512 RES MF W4 18K 1% 1H318
R513 RES MF W4 33K 1% 1H333
R514 RES MF W4 47K 1% 1H347
R515 RES CF 1W 1K0 5% 1E210
R516 RES CF 1W 1K0 5% 1E210
R517 RES CF 1W 2K7 5% 1E227
R518 RES CF 1W 2K7 5% 1E227
R519 RES CF 1W 330R 5% 1E133
R520 RES CF 1W 330R 5% 1E133
R524 RES MF W4 18K 1% 1H318
R525 RES CF W2 100R 5% 1D110
R526 RES CF W2 100R 5% 1D110
R527 RES MF W4 10R 1% 1H010
RA1 RES MO 3W 5% 0R22 KOASPR3 1Q922
RA101 RES MO 3W 5% 0R22 KOASPR3 1Q922
RLY501 RELAY G5Z-2A-E 24V A207
RLY502 RELAY G5Z-2A-E 24V A207
SK305 PHONO SKT 4-WAY EMC GOLD 8D225
SK501 BINDING POST 4WAY GOLD LTS04102002G 8D416
SK502 BINDING POST 4WAY GOLD LTS04102002G 8D416
SK503 IEC MAINS CONN PCB INS PX 8A001
SK504 STEREO JACK PCB 8D301
SPRFS SPARE FUSE 20mm 1.6A AS C12166
SPRFS SPARE FUSEHOLDER F062
SW501 SW PUSH 2PCO A1008
SW502 SW PUSH 2PCO A1008
SW503 SWITCH PUSH MAINS OPST SDS3P A1006
TC1 TRANSFORMER CLAMP E00201
TC2 TRANSFORMER CLAMP E00201
TH501 THERMISTOR SIEMENS B59008 1T002
TX1 ALPHA9 MULTI VOLTAGE TRANSFORMER L817TX
Y2 TX WIRE RESTRAINT F185
Y3 TX WIRE RESTRAINT F185
Y20 COPPER RIVET HP007
Y21 COPPER RIVET HP007
Z1 IC AUDIO NE5534N 5A5534
Z3 IC COMPARITOR DUAL LM393A 5M393A
Z101 IC AUDIO NE5534N 5A5534
Z201 IC VREG POS LM317T 5D317T
Z202 IC VREG POS LM337T 5D337
Z501 IC COMPARITOR TA7317P 5M7317
Alpha 9P Non PCB Parts, Metalwork etc.
Part No. Description
8K006 U-LINK
E802CH CHASSIS
E802MI PCB INSULATOR
E803SP ALPHA 9/9P AMP SUBPANEL
E804AP FELT RING
E804CP ALPHA 9/9P COVERPLATE
E809RP REAR PANEL
E814FP ALPHA 9P FASCIA
E815PM POWER BUTTON
E822PM FOOT
E825PM ALPHA 9 BADGE
E901HK HEATSINK ANODISED
F037 TOROIDIAL TRANSFORMER CLAMP
F038 RUBBER WASHER FOR ABOVE
HA6K55A TRANSFORMER BOLT
SH053 OWNERS HANDBOOK
SH058 WARRANTY LEAFLET

1 2 3 4 5 6 7 8
A
B
C
D
87654321
D
C
B
A
ISSUE
DRAWING NO.
23425 DRAWING TITLE
DRAWN BY CHK BY DATE
Filename ECO No. DESCRIPTION OF CHANGE
J:\Products\A9_amp\pcb_iss7\iss_8\L827C1_8.SCH
A & R Cambridge Ltd.
Pembroke Avenue
Denny Industrial Centre
Waterbeach
Cambridge CB5 9PB 1 5Sheet of
ALPHA 9 INPUT SELECTION
Circuit Diagram
L827C1 820-Oct-1998
A6 AC
A1A2
A3
A4
A5
SW201NA
A1207
B6 BC
B1B2
B3
B4
B5
SW201NB
A1207
C6 CC
C1C2
C3
C4
C5
SW201NC
A1207
M-
+
3738 3940
SW201ND
A1207
PHOR
ATE_PAD
1
2
3
4
5
6
7
8
SK201N
RBN8X
+15V
-15V
PHOL
ATE_PAD
R
L
L
R
EMC
1
N F
SK301NA
PHONO4G
N F
SK301NB
PHONO4G
EMC
1
N F
SK302NA
PHONO4G
N F
SK302NB
PHONO4G
EMC
1
N F
SK303NA
PHONO4G
N F
SK303NB
PHONO4G
EMC
1
N F
SK304NA
PHONO4G
N F
SK304NB
PHONO4G
AUXL
ATE_PAD AUXR
ATE_PAD
TUNL
ATE_PAD
TUNR
ATE_PAD
CDL
ATE_PAD
CDR
ATE_PAD
AVL
ATE_PAD
AVR
ATE_PAD
LP1IL
ATE_PAD
LP1IR
ATE_PAD
LP1OL
ATE_PAD
LP1OR
ATE_PAD
AVLIL
ATE_PAD
AVLIR
ATE_PAD
AVLOL
ATE_PAD AVLOR
ATE_PAD
INE
ATE_PAD
1
2
3
4
5
6
7
8
SK202N
1
2
3
SW207NA
4PCO
7
8
9
SW207NC
4PCO
4
5
6
SW207NB
4PCO
+44V
+5V
+5V
SWPNO SWAUX SWTUN SWCO SWAV SWLP1 SWFIX MOTN MOTP
C409N
10N CD
CHS
PHONO
BOARD
AUX TUNER CD AV LOOP1 IN LOOP1 OUT AV LOOP IN AV LOOP OUT
CHS
A
PROC/TAPE 2 SWITCH
42
SW201NF
A1207
41
SW201NE
A1207
CHS
C301N
1N0 CD
WAF
RLY401NA
RLY 51SB12T
RLY401NB
RLY 51SB12T
RLY401NC
RLY 51SB12T
R603N
6K8 MF
R605N
6K8 MF
A
TO MOTOR ON SHT 2
VOLUME BOARD
THIS CAPACITOR TO BE BESIDE SK302
R604N
2K2 MF
R606N
2K2 MF
ALL COMPONENT DESIGNATORS ENDING IN 'N' ARE NOT ON ALPHA 9P
ALL COMPONENT DESIGNATORS ENDING IN 'P' ARE ONLY ON ALPHA 9P
RL1
VOLR
VOLL
RV601NA
6A330M
RV601NB
6A330M
+ -
+
RV601NC
6A330M
C603N
10N CD
9
7
Case
RV601ND
6A330M
AC1 A1 A2 A3 A4 A5 A6 AC2
SW202NA
A1210
BC1
B1 B2 B3 B4 B5 B6
BC2
SW202NB
A1210
CC1 C1 C2 C3 C4 C5 C6 CC2
SW202NC
A1210
DC1
D1 D2 D3 D4 D5 D6
DC2
SW202ND
A1210
33
SW202NE
A1210
34
SW202NF
A1210
35
SW202NG
A1210
36
SW202NH
A1210
PHOE
ATE_PAD
1
2
3
4
5
6
7
8
SK602N
L809CA
98_1038
MAY96 ORIGINAL ISSUE L827C101 1
12
SK601N
1Y271

1 2 3 4 5 6 7 8
A
B
C
D
87654321
D
C
B
A
ISSUE
DRAWING NO.
23425 DRAWING TITLE
DRAWN BY CHK BY DATE
Filename ECO No. DESCRIPTION OF CHANGE
J:\Products\A9_amp\pcb_iss7\iss_8\L827C2_8.SCH
A & R Cambridge Ltd.
Pembroke Avenue
Denny Industrial Centre
Waterbeach
Cambridge CB5 9PB 2 5Sheet of
ALPHA 9 REMOTE CONTROL
Circuit Diagram
L827C2 820-Oct-1998
GND 1
MD1 2
CC1
3
REF
4
MC1
5
MC2
6
VCC1 7 VCC2 8
CC2
9MD2 10
Z402N
BA6109
GND 1
MD1 2
CC1
3
REF
4
MC1
5
MC2
6
VCC1 7 VCC2 8
CC2
9MD2 10
Z403N
BA6109
RA2
1
RA3
2
RTCC
3
MCLR
4
VSS
5
RB0 6
RB1 7
RB2 8
RB3 9
RB4 10
RB5 11
RB6 12
RB7 13
VDD
14
OSC2
15
OSC1
16
RA0
17
RA1
18
Z401N
PIC16C54XT
X401N
CST4.19MG
C405N
10N CD
C402N
10N CD
C404
10N CD
R404
1R0 FU
R401N
10R FU
D401N
1N4003F
D403N
1N4003F
+
C401N
1M0 25V
R402N
1K0 MF
D402N
5V6 400MW
+
C410N
10U EL
+5V
a.c. Input 8Vrms
D404N
5V6 400MW
VOLUME DRIVE
C408N
10N CD
D405N
5V6 400MW
SOURCE SELECT DRIVE
VOLM1
ATE_PAD
VOLM2
ATE_PAD
C406N
10N CD
TO MOTOR ON SHT 1
+C403N
1M0 25V
MOTSUP
ATE_PAD
1
2
3
SW402NA
A1402
4
5
6
SW402NB
A1402
7
8
9
10
SW402NC
A1402
10
11
12
SW207ND
4PCO
PROC/TAPE2
NORMAL
AV MODE
R410N
2K7 1W CF
+
C411N
1U0 EL
D407N
1N4003F
+44V
(TO SHT 1)
+5V REMO
ATE_PAD
B
D408N
5V6 400MW
R405N
1K0 MF
R403N
1K0 MF
AVMODE
ATE_PAD
9
8
7
6
5
4
3
2
1
RP401N
100K X 8 COM
SWPNO
SWAUX
SWTUN
SWCO
SWAV
SWLP1
SWFIX
AUTO
ATE_PAD
+5V
+5V
P5V
ATE_PAD
+5V
R406N
4K7 MF
R407N
4K7 MF
Q402N
BC557B
Q403N
BC557B
+5V
R408N
470R MF
D406N
1N4148 (SHT 5)
MUTE
MOTN
MOTP SWTM2 ATE_PAD
SWTM1
ATE_PAD
LINK FOR NORMAL OPERATION
Remote control
Mode
R601N
22R MF
R602N
22R MF
C601N
220P PP C602N 15N PE
3
2
1
+5V
O/P
GNDCase
RX1N
SBX1610-52
WAF
REMOTE BOARD
ALL COMPONENT DESIGNATORS ENDING IN 'N' ARE NOT ON ALPHA 9P
ALL COMPONENT DESIGNATORS ENDING IN 'P' ARE ONLY ON ALPHA 9P
Q401N
BC547B
YEL1
PAD200/1.4
YEL2
PAD200/1.4
ACSNS
LEDERR
LEDON
RL1
C407N
10N CD
1
2
MOTORN
RBN2X
B
R
G
LED601
LED RED/GRN
D602
5V6 400MW
1
2
3
LK601
L815CA
POWER INDICATOR PCB
1 2
PL1N
2WVERTJUMPER
1
2
3
LK401N
L815CA
ORIGINAL ISSUE
98_1038
L827C201 1MAY 96
1
2
3
SK401N
RBN3X
1
2
3
SK601
L815CA
Will not appear on Run Out Sheet.
JP1
JUMPER

1 2 3 4 5 6 7 8
A
B
C
D
87654321
D
C
B
A
ISSUE
DRAWING NO.
23425 DRAWING TITLE
DRAWN BY CHK BY DATE
Filename ECO No. DESCRIPTION OF CHANGE
J:\Products\A9_amp\pcb_iss7\iss_8\L827C3_8.SCH
A & R Cambridge Ltd.
Pembroke Avenue
Denny Industrial Centre
Waterbeach
Cambridge CB5 9PB 3 5Sheet of
ALPHA 9 TONE CONTROL
Circuit Diagram
L827C3 820-Oct-1998
C13N
220P PP
C14N
220P PP
+
C21N
10U EL
R47N
4K7 MF
C18N
100P PP
R46N
100K MF
R43N
470R MF
-15V
+15V
R54N
1K8 MF
R154N
1K8 MF
RV201NA
20K LIN POT
R36N
5K6 MF
1
2
3
SW205NA
2PCO
DIRECT
BALANCE
FROM
VOLUME
R40N
6K8 MF
R41N
10K MF
R42N
12K MF
RV203NA
20K LIN POT
RV202NA
20K LIN POT
R39N
12K MF
R38N
6K8 MF
+
C15N
10U EL
R37N
6K8 MF
TONEL
ATE_PAD
BASS
TREBLE
3
21
Z203NA
TL072
84
Z203NC
TL072
C19N
100P PP
R57N
100K MF
R49N
1K8 MF
R50N
6K8 MF
R51N
100R MF
R48N
4K7 MF
PREOL
ATE_PAD
PREOE
ATE_PAD
PREOR
ATE_PAD
1 2
LK1P
10MM LINK
RLY503NA
RLY 51SB12T
RLY503NB
RLY 51SB12T
EMC
1
N
F
SK305A
PHONO4G
N
F
SK305B
PHONO4G
C113N
220P PP
C114N
220P PP
+
C121N
10U EL
R147N
4K7 MF
C118N
100P PP
R146N
100K MF
R143N
470R MF
-15V
+15V
RV201NB
20K LIN POT
R136N
5K6 MF
4
5
6
SW205NB
2PCO
DIRECT
BALANCE
R140N
6K8 MF
R141N
10K MF
R142N
12K MF
RV203NB
20K LIN POT
RV202NB
20K LIN POT
R139N
12K MF
R138N
6K8 MF
+
C115N
10U EL
R137N
6K8 MF
TONER
ATE_PAD
BASS
TREBLE
5
67
Z203NB
TL072
C119N
100P PP
R157N
100K MF
R149N
1K8 MF
R150N
6K8 MF
R151N
100R MF
R148N
4K7 MF
1 2
LK2P
10MM LINK
PRE-OUT
POWER
IN
POWIL
ATE_PAD
POWIR
ATE_PAD
R52
6K8 MF
R152
6K8 MF
R153
2K2 MF
R53
2K2 MF
R61
33K MF
R161
33K MF
1 2
LK3P
10MM LINK
1 2
LK4P
10MM LINK
1 2 3
SW206NA
A1401
4 5 6
SW206NB
A1401
7
8
9
10
SW206NC
A1401
INT/EXT Power Amp Source
+15v
-15v
ALL COMPONENT DESIGNATORS ENDING IN 'N' ARE NOT ON ALPHA 9P
ALL COMPONENT DESIGNATORS ENDING IN 'P' ARE ONLY ON ALPHA 9P
VOLL
VOLR
PWRL
PWRR
C17N
100N PC
C117N
100N PC
C16N
100N PC
C116N
100N PC
C25N
2N2 PP
C125N
2N2 PP
R55N
1K0 MF
R155N
1K0 MF
R62N
820R MF
R162N
820R MF
+
C26N
10U EL
+
C126N
10U EL
3
21
Z2NA
JRC4560
5
67
Z2NB
JRC4560
84
Z2NC
JRC4560
3
21
Z102NA
JRC4560
5
67
Z102NB
JRC4560
84
Z102NC
JRC4560 L827301 1MAY 96
WAF
ORIGINAL ISSUE
98_1038

1 2 3 4 5 6 7 8
A
B
C
D
87654321
D
C
B
A
ISSUE
DRAWING NO.
23425 DRAWING TITLE
DRAWN BY CHK BY DATE
Filename ECO No. DESCRIPTION OF CHANGE
J:\Products\A9_amp\pcb_iss7\iss_8\L827C4_8.SCH
A & R Cambridge Ltd.
Pembroke Avenue
Denny Industrial Centre
Waterbeach
Cambridge CB5 9PB 4 5Sheet of
ALPHA POWER & AMP PSU
Circuit Diagram
L827C4 820-Oct-1998
R35
2K7 MF C12
10U NP
C11
220P PP
R34
47K MF
R32
47K MF
R31
120K MF
74
Z1B
NE5534
+
C8
100U EL C9
15N PE
C10
15N PE
R33
470K MF
AMPIL
ATE_PAD
AMPIEL
ATE_PAD
SRVOL
ATE_PAD2
36
8
5
Z1A
NE5534
DC Servo
Q11
BC547B
Q10
BC557B
R26 2K7 MF
R27
5K6 MF
R22
2K7 MF
Q18
BC547B
Q17
BC547B
Q19
BC547B
Q16
BC547B
Q9
BC546B
Q7
BC546B
Q6
BC556B Q8
BC556B
R15
1K0 MF
R60
1K0 MF
R79
33K MF
+15V
R23
100R MF
IQTP2L
ATE_PAD
R81
2K2 MF
C20
15N PE +
C7
10U EL
R78
120K MF
R16
18K MF
R19
2K7 MF
R18
2K7 MF
C6
56P PS
-15V -15V
R30
100K MF
R17
5K6 MF
Q4
2SC2547
Q5
2SA1085
R13
470R FU
R14
470R FU
Q3
2SA1085
R21
330R MF
C5
680P PP
R9
1K0 MF
R11 220R FU
R12 220R FU
R7
470R MF
R6
100R FU
R101K0 MF
C23
100N PC
D4
10V 400MW
Q1
IRFP240
Q2
IRFP240
D3
10V 400MW
Q13
BC557B
R5
470R MF
R4
100R FU
R82
100R MF
+C3
100U EL 100V
R8
100R FU
D2
1N4003F
D1
10V 400MW
+44V
BOOTL
ATE_PAD
C2
47N PE R3
5R6 1W CF
C4
100N PC
R2
1R5 1W CF
L1
2U2H LAC AMPOL
ATE_PAD
IQL
ATE_PAD
R1
0R22 3W MO
RA1
0R22 3W MO R29
470R FU
R58
330R MF
R59
27K MF
R56
56R MF
+C1
100U EL
R28
10R FU
R20
4K7 MF
Q12
2SC2547
Q14
2SC2547
R25
18K MF
-44V
3
21
Z3A
LM393A
5
67
Z3B
LM393A
84
Z3C
LM393A
D6
22V 400MW
Q15
BC557B
R73
15K MF
R74
15K MF
R75
10K MF
IQTP1L
ATE_PAD
R76
12K MF
R83
4K7 MF
R77
220K MF
+
C72
100U EL
Q20
BC547B
-15V
-15V
-15V
C22
100N PC
+44V
C122
100N PC
+44V
R71
15K MF R72 15K MF
R24
220K MF +
C71
10U EL
R124
220R MF -44v
IQSUP
ATE_PAD
D5
5V6 400MW
D106
22V 400MW
Q115
BC557B
R173
15K MF
R174
15K MF
R175
10K MF
IQTP1R
ATE_PAD
R176
12K MF
R183
4K7 MF
R177
220K MF
+C172
100U EL
Q120
BC547B
-15V
-15V
-15V
R135
2K7 MF C112
10U NP
C111
220P PP
R134
47K MF
R132
47K MF
R131
120K MF
+
C108
100U EL C109
15N PE
C110
15N PE
R133
470K MF
AMPIR
ATE_PAD
AMPIER
ATE_PAD
SRVOR
ATE_PAD
2
36
8
5
Z101A
NE5534
DC Servo
Q111
BC547B
Q110
BC557B
R1262K7 MF
R127
5K6 MF
R122
2K7 MF
Q118
BC547B
Q117
BC547B
Q119
BC547B
Q116
BC547B
Q109
BC546B
Q107
BC546B
Q106
BC556B Q108
BC556B
R115
1K0 MF
R160
1K0 MF
R179
33K MF
+15V
R123
100R MF
IQTP2R
ATE_PAD
R181
2K2 MF
C120
15N PE +C107
10U EL
R178
120K MF
R116
18K MF
R119
2K7 MF R118 2K7 MF
C106
56P PS
-15V -15V
R130
100K MF
R117
5K6 MF
Q104
2SC2547
Q105
2SA1085
R113
470R FU
R114
470R FU
Q103
2SA1085
R121
330R MF
C105
680P PP
R109
1K0 MF
R111 220R FU
R112 220R FU
R107
470R MF
R106
100R FU
R110
1K0 MF
C123
100N PC
D104
10V 400MW
Q101
IRFP240
Q102
IRFP240
D103
10V 400MW Q113
BC557B
R105
470R MF
R104
100R FU
R182
100R MF +C103
100U EL 100V
R108
100R FU
D102
1N4003F
D101
10V 400MW
+44V
BOOTR
ATE_PAD
C102
47N PE R103
5R6 1W CF
C104
100N PC
IQR
ATE_PAD
R101
0R22 3W MO
RA101
0R22 3W MO
R129
470R FU
R158
330R MF
R159
27K MF
R156
56R MF
+
C101
100U EL
R128
10R FU
R120
4K7 MF
Q112
2SC2547
Q114
2SC2547
R125
18K MF
-44V
R102
1R5 1W CF
L101
2U2H LAC AMPOR
ATE_PAD
R184
18K MF
R185
47K MF
+
C173
100U EL
Q121
2SA1085
WAF
74
Z101B
NE5534
Vin
I
ADJ
A
Vout O
Z201
LM317T
R206
10R FU
R205
10R FU
C205
4N7 PP
C206
4N7 PP
R201
2K4 MF
R203
2K4 MF
R202
220R MF
R204
220R MF
+C209
10U EL
+C210
10U EL
+C207
10U EL
+C208
10U EL
R207
10R FU
Vin
I
ADJ A
Vout O
Z202
LM337T
+44V
-44V
-15V
+15V P15V
ATE_PAD
N15V
ATE_PAD
REGE
ATE_PAD
+15V
-15V
D201
MUR420 D202 MUR420
D203
MUR420 D204 MUR420
+C201
10M EL 50V
+
C202
10M EL 50V
-44V
+44V PSUP
ATE_PAD
NSUP
ATE_PAD
POWRE
ATE_PAD
ACA
A9TXPINS ACB A9TXPINS
ACC
A9TXPINS
GNDCON
PAD150/1.8
1
HS1
E801HK
ALL COMPONENT DESIGNATORS ENDING IN 'N' ARE NOT ON ALPHA 9P
ALL COMPONENT DESIGNATORS ENDING IN 'P' ARE ONLY ON ALPHA 9P
HS
HS201A
TO220HS13REG
PWRL
HS202A
TO220HS23REG
PWRR
SPKL
SPKR
AIQL
AIQR
VIPROT
AIQL
AIQR RESET ATE_PAD
R84
18K MF
MAY 96 ORIGINAL ISSUE
98_1038
L827C401 1
R180
1K3 MF
R80
1K3 MF
R80 & R180 FROM 1K2 TO 1K3

1 2 3 4 5 6 7 8
A
B
C
D
87654321
D
C
B
A
ISSUE
DRAWING NO.
23425 DRAWING TITLE
DRAWN BY CHK BY DATE
Filename ECO No. DESCRIPTION OF CHANGE
J:\Products\A9_amp\pcb_iss7\iss_8\L827C5_8.SCH
A & R Cambridge Ltd.
Pembroke Avenue
Denny Industrial Centre
Waterbeach
Cambridge CB5 9PB 5 5Sheet of
A9 PROTECTION & MAINS
Circuit Diagram
L827C5 820-Oct-1998
R501
47K MF
R502
47K MF
R519
330R 1W CF
R520
330R 1W CF
R525
100R W2 CF R526 100R W2 CF
RLY501A
RLY G5Z-2A-E
RLY501B
RLY G5Z-2A-E
RLY501C
RLY G5Z-2A-E
RLY502A
RLY G5Z-2A-E
RLY502B
RLY G5Z-2A-E
RLY502C
RLY G5Z-2A-E
LHC
2RHC
3
1
4L
5
6R
7
SK504
HPSKT
C507
1N0 CD
C508
1N0 CD
C509
1N0 CD
C510
1N0 CD
C511
1N0 CD
C512
1N0 CD
HPSR
ATE_PAD
HPSL
ATE_PAD
HPSE
ATE_PAD
SPK2R
ATE_PAD
SPK1R
ATE_PAD
SPKEL
ATE_PAD
SPK2L
ATE_PAD
SPKER
ATE_PAD
SPK1L
ATE_PAD
ACDET
ATE_PAD
VTHERM
ATE_PAD
R503
100R MF
R504
47K MF
D501
1N4003F
D502
1N4003F D503 1N4003F
D504
1N4003F
D505N
1N4003F
+
C501
100U EL
+
C502
1U0 EL
R505
47K MF
R508
47K MF R509
47K MF
R514
47K MF
R507
18K MF
R524
18K MF R511 18K MF
R512
18K MF
R506
100K MF
R510
100K MF
+C503
100U EL
+
C504
1U0 EL
R521N
2K7 1W CF
R515
1K0 1W CF R516 1K0 1W CF
R517
2K7 1W CF
R513
33K MF
R527
10R MF
C506
10N CD
R518
2K7 1W CF
Q502
2SC2547
PWR 1
IN1
2
IN2
3
0V
4
V-
5
O6
FB
7
RC 8
V+ 9
Z501
TA7317P
TH501
PTH90DEG
C505
4N7 MAINS
1
2
3
SW501A
2PCO 4
5
6
SW501B
2PCO 1
2
3
SW502A
2PCO 4
5
6
SW502B
2PCO
L
N E
NEL
SK503
IEC3
1 2
LK501N
10MM LINK
12 LK502P
10MM LINK
PROT
ATE_PAD
PROTE
ATE_PAD
F501
AS1A6
+44V +44V
-44V
+44V
+44V
MUTE
+44V
RLY503NC
RLY 51SB12T
+44V
Pre-out mute
230V 115V
0V
SCREEN
BLUE
GREEN
BLUE
BLACK
BROWN ORANGE
YELLOW YELLOW
TX1
L817TX
BLACK
PAD200/1.4
BROWN
PAD200/1.4
ORANGE
PAD200/1.4
ACB AC0 ACA AC1 AC2
SCRN
PAD200/1.4
ALL COMPONENT DESIGNATORS ENDING IN 'N' ARE NOT ON ALPHA 9P
ALL COMPONENT DESIGNATORS ENDING IN 'P' ARE ONLY ON ALPHA 9P
SPKR SPKL
ACSNS
VIPROT
LEDON
LEDERR
SPRFS
AS1A6SP
Update Box
Y1
WAF
WAF
WAF
BARCODE LABEL
BC1
BC3
TOOLING4.1
BC4
TOOLING4.1
BC5
TOOLING4.1
BC6
TOOLING4.1
BC9
TOOLING4.1
BC10
TOOLING4.1
PD1
TARGET
PD2
TARGET
CHS
Y2
Y20
HP007
Y21
HP007
FSC
ATE_PAD
FS1
ATE_PAD
FS2
ATE_PAD
Y3 NEUTRAL
ATE_PAD
EARTH
ATE_PAD
LIVE
ATE_PAD
CHASS
SK501C
SPKSKT_G
TC1
E00201
TC2
E00201
PD3
TARGET
PD4
TARGET
Detail
Drilling
DD
DRILL_DETAIL
FS502
AS3A15_115V
1L827C501ORIGINAL ISSUE
98_1038
MAY 96
Bot+
Bot-
SK501B
CAMCON_G
CHASS
SK501C
CAMCON_G
Top+
Top-
SK501A
CAMCON_G
Top+
Top-
SK502A
CAMCON_G
Bot+
Bot-
SK502B
CAMCON_G
CHASS
SK502C
CAMCON_G
SW503A
A1007 SW503B A1007