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

5

C506

CERD 100P 63V 20% RA

2A110

7R

C507

CERD 100P 63V 20% RA

2A110

7R

C508

CERD 10P 63V 20% RA

2A010

7R

C601

PPRO 100P 63V 5% RA

2D110N

7R

C602

CERD 47P 63V 20% RA

2A047

7R

C603

ELST 22U 63V

2N622

7R

C604

PPRO 4N7 63V 5% RA

2D247N

7R

C605

PPRO 1N3 63V 5% RA

2D213N

7R

C606

ELST 10U 50V

2N610

7R

C701

PPRO 100P 63V 5% RA

2D110N

7R

C702

CERD 47P 63V 20% RA

2A047

7R

C703

ELST 22U 63V

2N622

7R

C704

PPRO 4N7 63V 5% RA

2D247N

7R

C705

PPRO 1N3 63V 5% RA

2D213N

7R

C706

ELST 10U 50V

2N610

7R

C801

PPRO 100P 63V 5% RA

2D110N

7R

C802

PPRO 100P 63V 5% RA

2D110N

7R

C803

ELST 10U 50V

2N610

7R

C804

ELST 10U 50V

2N610

7R

C805

CERD 10N 63V 20% RA

2A310

7R

C806

CERD 10N 63V 20% RA

2A310

7R

C901

CERD 10N 63V 20% RA

2A310

7R

C902

ELST 220U 16V

2N722

7R

C903

CERD 10N 63V 20% RA

2A310

7R

C904

CERD 10N 63V 20% RA

2A310

7R

C905

CERD 10N 63V 20% RA

2A310

7R

C906

CERD 10N 63V 20% RA

2A310

7R

C907

ELST 1M0 25V

2N810

7R

C1000

CERD 10N 63V 20% RA

2A310

7R

CL1

ALPHA AMP 7/8 HEATS NK
CLAMP

E82201

7R

CL2

ALPHA AMP 7/8 HEATS NK
CLAMP

E82201

7R

D1

RECT FIER 1N4003F 1A
200V

3B4003

7R

D2

ZENER 10V 400MW

3C11004

7R

D3

ZENER 10V 400MW

3C11004

7R

D4

ZENER 10V 400MW

3C11004

7R

D5

SSDIODE 1N4148 75V

3A4148

7R

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 1N4003F 1A
200V

3B4003

7R

D102

ZENER 10V 400MW

3C11004

7R

D103

ZENER 10V 400MW

3C11004

7R

D104

ZENER 10V 400MW

3C11004

7R

D105

RECT F ER 1N4003F 1A
200V

3B4003

7R

D106

RECT F ER 1N4003F 1A
200V

3B4003

7R

D107

RECT F ER 1N4003F 1A
200V

3B4003

7R

D108

ZENER 5V6 400MW

3C05604

7R

D201

ULTRAFAST RECT F ER
DIODE UF5403 3A

3B5403F

7R

D202

ULTRAFAST RECT F ER
DIODE UF5403 3A

3B5403F

7R

D203

ULTRAFAST RECT F ER
DIODE UF5403 3A

3B5403F

7R

D204

ULTRAFAST RECT F ER
DIODE UF5403 3A

3B5403F

7R

D801

ZENER 5V6 400MW

3C05604

7R

D802

ZENER 4V7 400MW

3C04704

7R

D803

SSDIODE 1N4148 75V

3A4148

7R

D901

RECT F ER 1N4003F 1A
200V

3B4003

7R

D902

ZENER 5V6 400MW

3C05604

7R

D903

RECT F ER 1N4003F 1A
200V

3B4003

7R

D904

ZENER 5V6 400MW

3C05604

7R

D905

SSDIODE 1N4148 75V

3A4148

7R

EL1

FUSE CLIP WCK-180-01A

F062

7R

FS201

INS COVER PCB
FUSEHOLDER

F022

7R

FS201

FUSE 20mm 1.25A AS

C12126

7R

FS201

FUSEHOLDER 20mm PCB

8S004

7R

FS202

FUSEHOLDER 20mm PCB

8S004

7R

FS202

INS COVER PCB
FUSEHOLDER

F022

7R

HS1

ALPHA AMP 7/8 HEATS NK

E81801

7R

HS1

SIL PAD - 25 X 12.5mm

E817MC

7R

HS1

ALPHA AMP 7/8 HS CLIP

E810MC

7R

HS2

SIL PAD - 25 X 12.5mm

E817MC

7R

HS2

ALPHA AMP 7/8 HEATS NK

E81801

7R

HS2

ALPHA AMP 7/8 HS CLIP

E810MC

7R

HS3

SIL PAD - 25 X 12.5mm

E817MC

7R

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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