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ALPHA ONE/7R/8R/8P AMPLIFIER SERVICE MANUAL

9

R510

RES MF W4 3K3 1%

1H233

7R

R510

RES MF W4 6K8 1%

1H268

A1

R511

RES MF W4 1% 4K7

1H247

7R

R511

RES MF W4 10K 1%

1H310

A1

R512

RES MF W4 1% 10K

1H310

7R

R512

RES MF W4 18K 1%

1H318

A1

R515

RES MF W4 3K3 1%

1H233

7R

R516

RES MF W4 1% 1K8

1H218

7R

R601

RES MF W4 1% 47K

1H347

7R

R602

RES MF W4 1% 470R

1H147

7R

R603

RES MF W4 1% 680K

1H468

7R

R604

RES MF W4 1% 56K

1H356

7R

R605

RES MF W4 1% 820R

1H182

7R

R701

RES MF W4 1% 47K

1H347

7R

R702

RES MF W4 1% 470R

1H147

7R

R703

RES MF W4 1% 680K

1H468

7R

R704

RES MF W4 1% 56K

1H356

7R

R705

RES MF W4 1% 820R

1H182

7R

R801

RES MF W4 1% 4K7

1H247

7R

R801

RES MF W4 560R 1%

1H156

8P

R802

RES MF W4 1% 100K

1H410

7R

R802

RES MF W4 3K9 1%

1H239

8P

R803

RES MF W4 1% 2K4

1H224

7R

R804

RES MF W4 1% 5K6

1H256

7R

R805

RES MF W4 1% 4K7

1H247

7R

R805

RES MF W4 560R 1%

1H156

8P

R806

RES MF W4 1% 100K

1H410

7R

R806

RES MF W4 3K9 1%

1H239

8P

R807

RES MF W4 1% 2K4

1H224

7R

R808

RES MF W4 1% 5K6

1H256

7R

R809

RES MF W4 1% 100K

1H410

7R

R810

RES MF W4 1% 100K

1H410

7R

R811

RES MF W4 1% 220R

1H122

7R

R812

RES MF W4 1% 220R

1H122

7R

R813

RES MF W4 1% 22K

1H322

7R

R814

RES MF W4 1% 22K

1H322

7R

R815

RES MF W4 1% 1K2

1H212

7R

R816

RES MF W4 1% 1K2

1H212

7R

R817

RES MF W4 18K 1%

1H318

7R

R818

RES MF W4 1% 8K2

1H282

8P

R819

RES MF W4 1% 8K2

1H282

8P

R901

RES MF FU W3 1R0 5%
NFR25

1G810

7R

R902

RES MF W4 1% 100R

1H110

7R

R903

RES MF W4 1% 100R

1H110

7R

R904

RES MF W4 1% 1K8

1H218

7R

R905

RES MF W4 1% 4K7

1H247

7R

RLY1

RELAY G5Z-2A-E 24V

A207

7R

RLY2

RELAY 960 OHM 51SB12T

A205

8R

RV1

10K PSET

6F310

7R

RV101

10K PSET

6F310

7R

RV301

POT 20KA* 2 LOG A

6A320L

A1

RV302

POT 10KB* 2 LIN

6A310E

7R

RV303

POT 10KB* 2 LIN

6A310E

7R

RV304

POT 10KB* 2 LIN

6A310E

7R

RV901

POT 20KA DUAL 18MM
MOTORISED

6A360M

7R

RX1

REMOTE CONTROL
RECEIVER SBX1610-62

B2103

7R

SK1

CAMCON BIND NG POST
4WAY NICKEL

8D418

7R

SK1

CANCON B ND NG POST
4WAY GOLD

8D418G

8R/8P

SK2

CAMCON BIND NG POST
4WAY NICKEL

8D418

7R

SK2

CANCON B ND NG POST
4WAY GOLD

8D418G

8R/8P

SK3

STEREO JACK PCB

8D301

7R

SK4

CAGE CLAMP 16A 3 WAY
ARC001-236

8Q001

7R

SK5

CAGE CLAMP 16A 1 WAY
ARC003-236

8Q003

7R

SK6

CAGE CLAMP 16A 2WAY
236-402/000-009

8Q005

7R

SK7

CAGE CLAMP 16A 3 WAY
ARC004-236

8Q004

7R

SK201

IEC MAINS CONN PCB  NS
PX

8A001

7R

SK301

PHONO SKT 4-WAY EMC

8D224

7R

SK301

PHONO SKT 4-WAY EMC
GOLD

8D225

8R/8P

SK302

PHONO SKT 4-WAY EMC

8D224

7R

SK302

PHONO SKT 4-WAY EMC
GOLD

8D225

8R/8P

SK303

PHONO SKT 4-WAY EMC

8D224

7R

SK303

PHONO SKT 4-WAY EMC
GOLD

8D225

8R/8P

SK304

PHONO SKT 4-WAY EMC

8D224

7R

SK304

PHONO SKT 4-WAY EMC
GOLD

8D225

8R/8P

SW1

SWITCH SLIDE 2WAY C/O
PANEL MNT PCB

A1403

8R

Summary of Contents for ALPHA 7R

Page 1: ...ages is fed to the differential input of Q112 and Q113 Q110 and Q111 form a constant current source for the differential input stage The output devices are n channel mosfets SMF045 Zener diodes D103 1...

Page 2: ...d 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 6 Release the PCB pillar located near to the serial num...

Page 3: ...B 7R C2 PEST 47N 63V 10 2K347 7R C3 PCRB 100N 100V 5 RA 5mm 2H410 7R C4 PEST 47N 63V 10 2K347 7R C5 PSTY 33P 160V ENCAP 1PF 2F033 7R C7 PPRO 4N7 63V 5 RA 2D247N 7R C8 PPRO 100P 63V 5 RA 2D110N 7R C9 E...

Page 4: ...D 1N0 63V 20 RA 2A210 7R C201 SUPPR CAP 4N7 250V 2K247 7R C204 ELST 10m 50V RA 32mm 2N910 7R C204 ELST 6M8 35V RA 2N868 A1 C205 ELST 10m 50V RA 32mm 2N910 7R C205 ELST 6M8 35V RA 2N868 A1 C206 PCRB 10...

Page 5: ...D6 RECT FIER 1N4003F 1A 200V 3B4003 8R D7 SSDIODE 1N4148 75V 3A4148 7R D8 RECT FIER 1N4003F 1A 200V 3B4003 7R D9 RECT F ER 1N4003F 1A 200V 3B4003 7R D10 ZENER 5V6 400MW 3C05604 8R D101 RECT F ER 1N40...

Page 6: ...7R Q18 TRANS LF SS N BC546B 4A546 7R Q19 TRANS LF SS P BC556B 4A556 7R Q101 TRANS PWR MOSFET RF540 SMF045 4K045 7R Q102 TRANS PWR MOSFET RF540 SMF045 4K045 7R Q103 TRANS LF SS P BC556B 4A556 7R Q104 T...

Page 7: ...1 68K 1H368 7R R55 RES MF W4 1 22K 1H322 7R R56 RES MF W4 1 22K 1H322 7R R57 RES CF 1W 2K7 5 1E227 8R R58 RES MF W4 1 1K8 1H218 7R R61 RES MF W4 18K 1 1H318 7R R62 RES MF W4 18K 1 1H318 7R R63 RES MF...

Page 8: ...5 1E227 7R R170 RES MF W4 1 680R 1H168 7R R201 RES MF FU W3 470R 5 NFR25 1G147 7R R202 RES MF FU W3 470R 5 NFR25 1G147 7R R203 RES MF FU W3 470R 5 NFR25 1G147 7R R204 RES MF FU W3 470R 5 NFR25 1G147 7...

Page 9: ...4 1 1K2 1H212 7R R817 RES MF W4 18K 1 1H318 7R R818 RES MF W4 1 8K2 1H282 8P R819 RES MF W4 1 8K2 1H282 8P R901 RES MF FU W3 1R0 5 NFR25 1G810 7R R902 RES MF W4 1 100R 1H110 7R R903 RES MF W4 1 100R 1...

Page 10: ...Y271 7R X901 CER RESON CST4 19MG 4 19MHz 7W002 7R Y1 TX WIRE RESTRAINT F185 7R Y2 TX WIRE RESTRAINT F185 7R Z201 IC VREG POS 7815 5D7815 7R Z202 IC VREG NEG 7915 5D7915 7R Z300 IC AUDIO DUAL 4560D 5B4...

Page 11: ...NK10NP LK1094 LINK10NP LK1095 LINK10NP LK1096 LINK10NP LK1097 LINK10NP LK1098 LINK10NP LK1041 LINK10NP LK1042 LINK10NP LK1043 LINK10NP LK1044 LINK10NP LK1045 LINK10NP LK1046 LINK10NP LK1047 LINK10NP L...

Page 12: ...component numbers 0xx Power amp L 1xx Power amp R 2xx Power supply 3xx ICs Switches 4xx Tone balance L 5xx Tone balance R 6xx MM phono L 7xx MM phono R 8xx Pre amp output L R 9xx Remote control EMC 1...

Page 13: ...3 MF BASS TREBLE BALANCE 8dB cut and boost Tone controls R406 220R MF R407 4K7 MF R408 4K7 MF R409 3K3 MF R410 3K3 MF R412 10K MF RV302B 10K LIN POT RV303B 10K LIN POT C402 220N PE C403 220N PE R411 4...

Page 14: ...0MW R3 2R2 CF C17 470P CD R2 4R7 W2 CF C3 100N PC Q2 IRF540 C13 15N PE C12 100U EL 100V P15V N15V R18 2K7 MF Q15 BC546B R52 3K9 MF RLY1A RLY G5Z 2A E LHC 2 RHC 3 1 4 L 5 6 R 7 SK3 HPSKT 1 2 3 SW99A 2P...

Page 15: ...40 C113 15N PE C112 100U EL 100V R118 2K7 MF Q115 BC546B R152 3K9 MF RLY1B RLY G5Z 2A E RLY1C RLY G5Z 2A E C120 470P CD C118 1N0 CD R141 470R FU R142 620R MF C116 100U EL R145 18K MF R135 33K MF R147...

Page 16: ...N CD R903 100R MF R902 100R MF C902 220U EL C901 10N CD R901 1R0 FU D902 5V6 400MW D901 1N4003F D903 1N4003F C907 1M0 25V C906 10N CD C905 10N CD MOTE REMO MOTSUP VOLM1 VOLM2 P5V 5V 5v X901 CST4 19MG...

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