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M/A-Com MASTR II/III 19A149979P1 Maintenance Manual

12/24v power supply
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Download this manual See also: Operator's Manual, User Manual
Maintenance Manual
LBI-38551
Rev. D, May-04
®
MASTR
II/III
12/24V Power Supply
19A149979P1 - 120 VOLT/60 Hz
19A149979P2 - 230 VOLT/50 Hz
19A149979P3 – 220VOLT/60 Hz

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Summary of Contents for M/A-Com MASTR II/III 19A149979P1

  • Page 1 Maintenance Manual LBI-38551 Rev. D, May-04 ® MASTR II/III 12/24V Power Supply 19A149979P1 - 120 VOLT/60 Hz 19A149979P2 - 230 VOLT/50 Hz 19A149979P3 – 220VOLT/60 Hz...
  • Page 2 This manual is published by M/A-COM, Inc. without any warranty. Improvements and changes to this manual necessitated by typographical errors, inaccuracies of current information, or improvements to programs and/or equipment, may be made by M/A-COM, Inc. at any time and without notice. Such changes will be incorporated into new editions of this manual.

  • Page 3: Table Of Contents

    TABLE OF CONTENTS TABLE OF CONTENTS Page SPECIFICATIONS IMPORTANT SAFETY INFORMATION DESCRIPTION CIRCUIT ANALYSIS MAINTENANCE TROUBLE-SHOOTING ........................12 ADJUSTMENTS........................... 12 INSTALLATION ..........................12 FUSE REPLACEMENT ........................12 TROUBLESHOOTING PROCEDURES....................15 PARTS LIST 12/24 VDC, 121VAC, 60 H POWER SUPPLY 19A149979P1 ............18 12/24 VDC, 230 VAC, 50 H POWER SUPPLY 19A149979P2 ............

  • Page 4: Specifications

    SPECIFICATIONS 1.0 SPECIFICATIONS OUTPUT VOLTAGE 26.0 VDC ±1.0 VDC @ 15 Amps (F801A) Transmit and Receive Simultaneously 13.0VDC ±0.5VDC @ 3Amps (J801) Receive only Less than 16VDC @ 3 Amps (J801) 121 VAC ±20% (60 Hz version) INPUT VOLTAGE 230 VAC ±15% (50 Hz version) 220VAC ±15% (60 Hz version) 60 Hz ±...

  • Page 5: Important Safety Information

    Failure to comply with these precautions for with specific warnings elsewhere in this manual violates safety standards of design, manufacture, and intended use of the product. M/A-COM Inc. assumes no liability for the customer’s failure to comply with these standards The WARNING symbol calls attention to a procedure, practice, or the like, which, if not correctly performed or adhered to, could result in personal injury.
  • Page 6 IMPORTANT SAFETY INFORMATION subjected to damage or stress. 9. An extension cord should not be used unless absolutely necessary. Use of an improper extension cord could result in a risk of fire and electric shock. If an extension cord must be used, make sure: a.
  • Page 7 This does not refer to replacing a fuse that does not require opening of the unit. If anyone other than an authorized M/A-COM Service technician attempts to repair this unit, M/A-COM, Inc will assume no responsibility.

  • Page 8: Description

    DESCRIPTION 3.0 DESCRIPTION The M/A-COM MASTR® II/III Base Station 12/24 Volt Power Supply provides up to 429 watts to power a MASTR II/III 800 or 900 MHz base station receiver, system circuitry, and transmitter. The nominal 12 volt output is actually 13.0 VDC and provides a maximum of 3 amperes to power the receiver and system circuitry.

  • Page 9: Circuit Analysis

    CIRCUIT ANALYSIS 4.0 CIRCUIT ANALYSIS In the 60 Hz power supply (19A149979P1), the ON/OFF switch (S1) provides line voltage to the power supply through the primary line fuse F1. Line current flows through F1 to the courtesy receptacle prior to S1. This allows line voltage to always be available at the receptacles.

  • Page 10: Figure 4-1: 60 Hz Power Supply (19A149979P1)

    CIRCUIT ANALYSIS 3 and J801-4,5,6 are A+ and A-, respectively, and connect to the receiver and system circuitry. The power supply is rated for a nominal 26.0 VDC for a 15 amp load out of F801A and for a nominal 13.0 VDC for a 3 amp load out of J801 (receiving and transmitting simultaneously).

  • Page 11: Figure 4-3: 60 Hz Power Supply (19A149979P3)

    CIRCUIT ANALYSIS Figure 4-3: 60 Hz Power Supply (19A149979P3) LBI-38551D...

  • Page 12: Maintenance

    MAINTENANCE 5.0 MAINTENANCE For disassembly, remove 8 screws and lift off top cover. Disassembly is required before working on the power supply. When replacing any component be certain to use an identical component. Thermal joint compound is required between diodes D1, D2, D3, and D4 and the heat sink.

  • Page 13: Figure 5-1: Front And Rear View 60 Hz Power Supply (19A149979P1)

    MAINTENANCE FRONT VIEW REAR VIEW Figure 5-1: Front and Rear View 60 Hz Power Supply (19A149979P1) FRONT VIEW REAR VIEW Figure 5-2: Front and Rear View of 50 Hz Power Supply (19A149979P2) LBI-38551D...

  • Page 14: Figure 5-3: Front And Rear View Of 60 Hz Power Supply (19A149979P3)

    MAINTENANCE FRONT VIEW J802 F801A W801 J801 REAR VIEW Figure 5-3: Front and Rear View of 60 Hz Power Supply (19A149979P3) LBI-38551D...

  • Page 15: Troubleshooting Procedures

    MAINTENANCE TROUBLESHOOTING PROCEDURES Table 5-1: Symptoms and Procedures for 60 Hz Power Supply 19A149979P1 SYMPTOM PROCEDURE Check the following: 1. Open F1, F3 or S1. No output voltage at J801 2. AC voltage on W801. 3. Open D1, D2, D3, or D4. Check the following: 4.

  • Page 16: Table 5-2: Symptoms And Procedures For 50 Hz Power Supply 19A149979P2

    MAINTENANCE Table 5-2: Symptoms and Procedures for 50 Hz Power Supply 19A149979P2 SYMPTOM PROCEDURE Check the following: 1. Open F1, F3, F4 or S1. No output voltage at J801 2. AC voltage on W801. Open D1, D2, D3, or D4 NOTE: Diodes also referred to as CR1-CR4.

  • Page 17: Table 5-3: Symptoms And Procedures For 60 Hz Power Supply 19A149979P3

    MAINTENANCE SYMPTOM PROCEDURE Check the following: 1. If one of the dual diodes on D1, D2, D3, or D4 is shorted. Low output voltage on J801. NOTE: All four diode packages contain two 0 < Vo < 12.5 VDC diodes each. 2.

  • Page 18: Parts List

    PARTS LIST 6.0 PARTS LIST 12/24 VDC, 121VAC, 60 Hz POWER SUPPLY 19A149979P1 SYMBOL PART NUMBER DESCRIPTION - - - - CAPACITOR - - - - M29/17032400 Polypropylene: 8 µF, 660VAC, similar to (Item #8) Ronken P61A24805H05. - - - - CONNECTOR - - - - J801 M29/40027400 Connector: 9 position;...
  • Page 19 PARTS LIST SYMBOL PART NUMBER DESCRIPTION From terminal 1 of connector F801A to side terminal of fuse holder F2. From terminal 2 of F801A to TB8 on PCB. Red lead from J801 to side terminal of fuse holder F3. Black Lead from J801 to E13 on PCB. From E8 on PCB to end terminal of fuse holder W801 M29/11022301...
  • Page 20 PARTS LIST SYMBOL PART NUMBER DESCRIPTION Item #27 220496205 Washer: #10 Item #28 22049500 Screw: #10-32 x 3/8”, Tork. Item #29 22010305 Washer: #6 internal tooth LW. Item #30 22009003 Screw: #6-32 x 0.312. Item #31 43017000 Cement RTV 6700 Item #32 51092475-000 Label...
  • Page 21 PARTS LIST SYMBOL PART NUMBER DESCRIPTION Item #1 HEAT SINK / PCB ASSEMBLY M29/91034501 Assembly includes the following: - - - - CAPACITORS - - - - M29/17034301 Aluminum electrolytic: 27000 µF, 40V. thru M29/17034300 Aluminum electrolytic: 33000 µF, 25V; sim to UCC KME25VB333M35X50LL.

  • Page 22: 12/24 Vdc, 230 Vac, 50 H Zpower Supply 19A149979P2

    PARTS LIST 12/24 VDC, 230 VAC, 50 Hz POWER SUPPLY 19A149979P2 SYMBOL PART NUMBER DESCRIPTION - - - - CAPACITORS - - - - M29/17032400 Polypropylene: 8 µF, 660VAC, similar to Ronken P61A24805H05. - - - - FUSES - - - - M29/09016000 Normal Blow Fuse: 5 amps, 250V;...
  • Page 23 PARTS LIST SYMBOL PART NUMBER DESCRIPTION - - - - SWITCH - - - - 82120003900 DPST: sim to RGSCC-711-R-B-B-E.. (M29/20003900) - - - - FUSE - - - - 821090170PE Holder: sim to HTB-36M. 821097100PE 5 Amp: sim to thru 821090215PE Holder: sim to 342024.
  • Page 24 PARTS LIST SYMBOL PART NUMBER DESCRIPTION - - - - RECTIFIERS - - - - M29/18030500 Dual Schottky Rectifier: 30 amps, 150V; similar thru to GI FED30CP. (Also referred to as CR1-CR4) - - - - CHOKES - - - - Output Choke: 0.7mH, 15 amps.

  • Page 25: 12/24 Vdc, 220 Vac, 60H Zpower Supply 19A149979P3

    PARTS LIST 12/24 VDC, 220 VAC, 60Hz POWER SUPPLY 19A149979P3 SYMBOL PART NUMBER DESCRIPTION - - - - CAPACITORS - - - - 801000276PE Polypropylene: 8 µF, 660VAC, similar to Ronken P61A24805H05. - - - - RESISTORS - - - - 8113000550P Wirewound Resistor: 30 ohms, 50 W;...
  • Page 26 PARTS LIST SYMBOL PART NUMBER DESCRIPTION PCB ASSEMBLY 833303680 Printed Circuit Board. - - - - CAPACITORS - - - - Aluminum electrolytic: 27000 µF, 40V. 801000281PE thru Aluminum electrolytic: 33000 µF, 25V; sim to 801000280PE UCC KME25VB333M35X50LL. Aluminum electrolytic: 27000 µF, 40V. 801000281PE - - - - RECTIFIERS - - - - M29/18030500...
  • Page 27 PARTS LIST SYMBOL PART NUMBER DESCRIPTION 83310240000 Insulator. 81622046700 Rivet (Qty. 2). E2, E7 83322045500 Perm Stud; (Qty. 3). 820130618 Faston Tabs (Qty. 8). thru 81622041501 Nut: Printed Wire Board (Qty. 7). 81622041502 Nut: Bottom cover, Ground Stud and Capacitor U9 Bracket and Resistor R1 bracket (Qty.

  • Page 28: Assembly Diagrams

    ASSEMBLY DIAGRAM ASSEMBLY DIAGRAMS 12/24 VDC, 121VAC, 60 Hz POWER SUPPLY 19A149979P1 (289PS15, Sh. 1, Rev. T) LBI-38551D...
  • Page 29 ASSEMBLY DIAGRAM (289PS15, Sh. 2, Rev. T) LBI-38551D...

  • Page 30: 12/24 Vdc, 230Vac, 50 H Zpower Supply 19A149979P2

    ASSEMBLY DIAGRAM 12/24 VDC, 230VAC, 50 Hz POWER SUPPLY 19A149979P2 (289PS16, Sh. 1, Rev. T) LBI-38551D...

  • Page 31: 12/24 Vdc, 220Vac, 60 H Zpower Supply 19A149979P3

    ASSEMBLY DIAGRAM 12/24 VDC, 220VAC, 60 Hz POWER SUPPLY 19A149979P3 LBI-38551D...

  • Page 32: Outline Diagram

    OUTLINE DIAGRAM 8.0 OUTLINE DIAGRAM PRINTED CIRCUIT BOARD 50 Hz AND 60 Hz MODELS (19A149979P1 & P2) (33017704, Sh. 1) (33017700, Sh. 1) COMPONENT SIDE (33017704, Sh. 1) (33017700, Sh. 1) SOLDER SIDE LBI-38551D...

  • Page 33: Printed Circuit Board 60 H Zmodels (19A149979P2)

    OUTLINE DIAGRAM PRINTED CIRCUIT BOARD 60 Hz MODELS (19A149979P2) (289PS16) LBI-38551D...

  • Page 34: 12/24 Vdc, 220Vac, 60 H Zpower Supply 19A149979P3

    OUTLINE DIAGRAM 12/24 VDC, 220VAC, 60 Hz POWER SUPPLY 19A149979P3 (289PS25) LBI-38551D...

  • Page 35: Schematic Diagrams

    SCHEMATIC DIAGRAM 9.0 SCHEMATIC DIAGRAMS POWER SUPPLY 19A149979P1 (Model 289PS15) (289PS15, Rev. A LBI-38551, Rev. D...

  • Page 36: Power Supply 19A149979P2 (Model 289Ps16)

    SCHEMATIC DIAGRAM POWER SUPPLY 19A149979P2 (Model 289PS16) (289PS16, Rev. A) LBI-38551, Rev. D...

  • Page 37: Power Supply 19A149979P3 (Model 289Ps25)

    SCHEMATIC DIAGRAM POWER SUPPLY 19A149979P3 (Model 289PS25) (Schematic Diagram Not Available) LBI-38551, Rev. D...
  • Page 38 M/A-COM, Inc. 221 Jefferson Ridge Parkway Lynchburg, Virginia 24501 (Outside USA, 434-385-2400) Toll Free 800-528-7711 www.macom-wireless.com Printed in U.S.A.

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