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M/A-Com MASTR II 19A149979P1 Maintenance Manual

Site equipment 12/24v power supply
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Download this manual See also: Maintenance Manual, Operator's Manual
MASTR
®
II Site Equipment
12/24V Power Supply
19A149979P1 - 120 VOLT/60 Hz
19A149979P2 - 230 VOLT/50 Hz
THESE SERVICING INSTRUCTIONS ARE FOR USE BY QUALIFIED PER-
SONNEL ONLY. TO AVOID ELECTRIC SHOCK DO NOT PERFORM ANY
SERVICING OTHER THAN THAT CONTAINED IN THE OPERATING IN-
STRUCTIONS UNLESS YOU ARE QUALIFIED TO DO SO. REFER ALL
SERVICING TO QUALIFIED SERVICE PERSONNEL
WARNING: TO PREVENT FIRE OR ELECTRIC SHOCK HAZARD. DO NOT EX-
POSE THIS PRODUCT TO RAIN OR MOISTURE.
CAUTION: TO PREVENT ELECTRIC SHOCK DO NOT USE THIS (POLARIZED)
PLUG WITH AN EXTENSION CORD, RECEPTACLE OR OTHER OUTLET UN-
LESS THE BLADES CAN BE FULLY INSERTED TO PREVENT BLADE EXPO-
SURE.
Maintenance Manual
CAUTION
LBI-38551C

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

  • Page 1 Maintenance Manual LBI-38551C MASTR ® II Site Equipment 12/24V Power Supply 19A149979P1 - 120 VOLT/60 Hz 19A149979P2 - 230 VOLT/50 Hz CAUTION THESE SERVICING INSTRUCTIONS ARE FOR USE BY QUALIFIED PER- SONNEL ONLY. TO AVOID ELECTRIC SHOCK DO NOT PERFORM ANY SERVICING OTHER THAN THAT CONTAINED IN THE OPERATING IN- STRUCTIONS UNLESS YOU ARE QUALIFIED TO DO SO.

  • Page 2: Table Of Contents

    This manual is published by M/A-COM Private Radio Systems, Inc., without any warranty. Improvements and changes to this manual necessitated by typo- graphical errors, inaccuracies of current information, or improvements to programs and/or equipment, may be made by M/A-COM Private Radio Systems, Inc., at any time and without notice.

  • Page 3: Important Safety Information

    LBI-38551C IMPORTANT SAFETY INFORMATION 12. To reduce risk of electric shock, unplug unit from outlet before attempting any maintenance or clean- SAVE THIS MANUAL - It contains important ing. safety and operating instructions. 13. DO NOT operate this product with covers or pan- Before using the product, please follow and adhere els removed.

  • Page 4: Specifications

    LBI-38551C SPECIFICATIONS* OUTPUT VOLTAGE 26.0 Vdc ±1.0 Vdc @ 15 Amps (F801A) Transmit and Receive Simultaneously 13.0Vdc ±0.5Vdc @ 3 Amps (J801) Receive only Vdc @ 3 Amps (J801) 121 Vac ±20% (60 Hz version) INPUT VOLTAGE 230 Vac ±15% (50 Hz version) 60 Hz ±...

  • Page 5: Description

    LBI-38551C The operation and servicing of the power supply are DESCRIPTION completely accessible from the front. The ON/OFF switch and all fuses are located on the front panel. The low profile ® The MASTR II Site Equipment 12/24 Volt Power slot type fuse holders contain the primary fuse(s) F1 (F1 and Supply provides up to 429 watts to power a MASTR II 800 F4 for P2), the high current output fuse F2, and the low cur-...
  • Page 6 LBI-38551C Figure 1 - 60 Hz Power Supply (19A149979P1, Rev. A) Figure 2 - 50 Hz Power Supply (19A149979P2, Rev. A)

  • Page 7: Maintenance

    LBI-38551C tors. C9 serves as a resonating capacitor across the secon- neously). When receiving only (a 3 amp load out of J801) dary taps of the transformer. the output voltage is less than 15.8 Vdc at J801 and less than 29.0 VDC at F801A. The transformer steps the input voltage down to ap- proximately 28 Vac across two secondary windings.
  • Page 8 LBI-38551C Figure 3 - 60 Hz Power Supply (19A149979P1, Rev. A) Figure 4 - 50 Hz Power Supply (19A149979P2, Rev. A)

  • Page 9: Fuse Replacement

    LBI-38551C FUSE REPLACEMENT WARNING To replace a defective fuse, perform the following pro- To avoid possible electric shock, DO NOT operate cedure: this power supply with the fuse cover removed. Place ON/OFF switch to the OFF position. WARNING For fuses F1 (F1 & F4 on ’979P2), F2, or F3; re- move cap from fuse holder and replace fuse with a No one should be permitted to handle any portion of fuse of the same type and rating.

  • Page 10: Troubleshooting Procedures

    LBI-38551C TROUBLESHOOTING PROCEDURES Table 1 - 60 Hz Power Supply 19A149979P1 SYMPTOM PROCEDURE No output voltage at J801 Check the following: 1. Open F1, F3 or S1 2. AC voltage on W801 3. Open D1, D2, D3, or D4 No output voltage at F801A Check the following: 1.
  • Page 11 TROUBLESHOOTING PROCEDURES LBI-38551C Table 2 - 50 Hz Power Supply 19A149979P2 SYMPTOM PROCEDURE No output voltage at J801 Check the following: 1. Open F1, F3, F4 or S1 2. AC voltage on W801 3. Open D1, D2, D3, or D4 No output voltage at F801A Check the following: 1.

  • Page 12: Outline Diagram

    LBI-38551C OUTLINE DIAGRAM • COMPONENT SIDE (33017704, Sh. 1) (33017700, Sh. 1) • SOLDER SIDE (33017704, Sh. 1) (33017700, Sh. 2) PRINTED CIRCUIT BOARD 50 Hz AND 60 Hz MODELS...

  • Page 13: 60 Hz Power Supply

    ASSEMBLY DIAGRAM LBI-38551C 60 Hz POWER SUPPLY 19A149979P1, Rev. A...

  • Page 14: 60 Hz Power Supply

    LBI-38551C SCHEMATIC DIAGRAM 60 Hz POWER SUPPLY 19A149979, Rev A (289PS3, Sh. 1, Rev. C)

  • Page 15: Parts List

    PARTS LIST LBI-38551C 12/24 VOLT POWER SUPPLY 19A149979P1 ISSUE 1 SYMBOL PART NO. DESCRIPTION SYMBOL PART NO. DESCRIPTION ......CAPACITORS......HEAT SINK / PCB ASSEMBLY M29/17032400 Polypropylene: 8 uF, 660Vac, similar to Ronken M29/91034501 (REV. 0) P61A24805H05....... FUSES ....... (Assembly includes the following:) M29/09013901 Non-time delay Glass/Ferrule Fuse: 10 amps, ......

  • Page 16: 50 Hz Power Supply

    LBI-38551C ASSEMBLY DIAGRAM 50 Hz POWER SUPPLY 19A149979P2, Rev. A...

  • Page 17: 50 Hz Power Supply

    SCHEMATIC DIAGRAM LBI-38551C 50 Hz POWER SUPPLY 19A149979P2, Rev. A (289PS4 Sh. 1, Rev. C)

  • Page 18: 50 Hz Power Supply

    M29/22041503 Nut: No. 10-32, quantity 4; used to secure terminal lugs to PCB. *COMPONENTS ADDED, DELETED OR CHANGED BY PRODUCTION CHANGES. M/A-COM Wireless Systems 3315 Old Forest Road Lynchburg, Virginia 24501 (Outside USA, 434-385-2400) Toll Free 800-528-7711 www. macom-wireless.com...

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