Shure SR105 service manual RKC37, TB1, TB2, XF1, XPL2, RKC23 RKC21

Page 26

REPLACEMENT PARTS FOR SR105 POWER AMPLIFIER

Reference

-

 

 

 

Replacement

 

 

Replacement Kit Consists Of:

Designation

Kit. NO.*

 

 

 

Part No.

Description

 

 

Qty.

Q8

-

-

86A362

Transistor, Silicon, PNP, Driver,

 

 

 

 

BVCEO 120V min.

Q9-Q12

-

-

86A360

Transistor, Silicon, NPN

R35-R40

-

-

45EB439D

Resistor, Fixed, 0.43 ohms, 5%, 7W

R41

-

-

46A041

Potentiometer, 50K, VOLUME

R43, R44

-

-

45CB758C

Resistor, Fixed, 7.5 ohms, 5%, 1W

R45, R46

-

-

45CB308C

Resistor, Fixed, 3.0 ohms, 5%, 1W

S1

-

-

55A96

Switch, Toggle, SPST, POWER

52, S3

RKC37

1

95A551

Thermostat, SPST

S4

-

 

55C131

Switch, Slide, DPDT, 70V-OFF (SRl05Aonly)

T I

-

-

90K2150

Transformer Assembly, Balanced Input

T2

-

-

51A256

Transformer, Power

T3

-

-

51A244

Transformer, 70V Output (SR105A only)

TB1

-

-

56A211

Terminal Strip, 2-screw, DIRECT OUTPUT

TB2

-

-

56A204

Terminal Strip, &screw, 70V (SR105A only)

W1

-

-

95A632

Line Cord and 3-Conductor Ac Plug Assembly

W2

-

-

90A1522

Cable and Plug Assembly, 6-Foot, with

 

 

 

 

2 Phone Plugs

XF1

-

-

95A429

Fuseholder, 3AG-5A

XPLl

-

-

95A598

Lampholder and Bracket Assembly

XPL2

-

-

95A599

Lampholder and Bracket Assembly,

 

 

 

 

Nylon Sleeve

Commercial

Alternate

Motorola 2N3741 (Selected)

RCA 2N3773

None

None

Allen-Bradley GB

Allen-Bradley GB

Cutler-Hammer 751OK12

None

None

None

None

None

Cinch 2-141-Y

Cinch 3-141-Y

None

None

Littelfuse 342014

None

None

MAIN CIRCUIT BOARD ASSEMBLY

C1

-

-

86K628

Capacitor, Electrolytic, 250 PF,16V

Sprague

 

 

 

 

 

30A-TE11645;

 

 

 

 

 

Mallory MTA-

 

 

 

 

 

250F15

C2

-

-

50KC224

Capacitor, Film, .22 PF,100V

CDE 1P22-10

C5

-

-

86D630

Capacitor, Electrolytic, 10 PF, IOV

Sprague

 

 

 

 

 

30D-TE1128;

 

 

 

 

 

CDE NLW-10-16

C6

-

 

86H628

Capacitor, Electrolytic, 80 PF,25V

Sprague

 

 

 

 

 

30D-TE1210;

 

 

 

 

 

CDE NLW-100-25

D1

D2, D3, D6

04, D5 D8, D9

I

I

RKC23

RKC21

-

RKCl9

 

1

 

86A409

 

Zener Diode, Silicon, 2.6V

Motorola 1N4729A

 

4

 

86A404

 

Silicon Rectifier, 100V, 1/2A

Motorola 1N4002

I

-

1

86A415

1

Diode,Silicon, Computer, 75V

TI or GE 1N4148

1

4

1

86A405

1

Diode, Germanium.30V

RCA 1N48, IN60

'Parts listed as RKC Kits should be ordered by that kit number. Any orders received for piece parts where RKC Kit number is shown will be shipped in RKC quantities.

20

Image 26
Contents SR105 Power Amplifier Specifications Iii Page Table of Contents Page SR105 Power Amplifier DescriptionSR105 Power Amplifier Front Panel Operating Instructions General Operating InstructionsThermal Overload Power RequirementsMounting and Ventilation Input ConnectionsSR105 Power Amplifier Block Diagram Output Connections Direct Output only Recommended Wire Gauge VS. AMPLIFIER-TO-SPEAKER Distance AMPLIFIER-TO-SPEAKER Distance MetersVolt Output Output Voltage MeterAdding SR105A Amplifiers in a 70-VOLT System Cascaded Special Operating InstructionsBasic Operating Hints Coil Bridging ConnectionsAdding Headphone Jack to Speaker Connections Service Instructions Printed Circuit Board Removal Small Signal and Predriver Transistors Driver TransistorsDiode Bridge Rectifier Output TransistorsDiodes Checking Transistors and DiodesCOM GRN RED YEL BLKWHT Service Illustrations GNDJI J2 Page TB2 RKC37TB1 XF1RKC9 RKC53IRC CEC-TO Main Circuit Board Parts Location Diagram AC Voltage Measurements TroubleshootingGeneral DC Voltage MeasurementsPage SR105 Power Amplifier Circuit Diagram Page Constant Voltage 70-VOLT Speaker Output Architects Andengineers SpecificationsCondensed Operating Instructions