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Ericsson GE MASTR II 19A149979P1 Maintenance Manual

12/24v base station
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Mobile Communications
MASTR
II BASE STATION
®
12/24V POWER SUPPLY
19A149979P1 - 120 VOLT/60 Hz
19A149979P2 - 230 VOLT/50 Hz
THESE SERVICING INSTRUCTIONS ARE FOR USE BY QUALI-
FIED PERSONNEL ONLY. TO AVOID ELECTRIC SHOCK DO NOT
PERFORM ANY SERVICING OTHER THAN THAT CONTAINED IN
THE OPERATING INSTRUCTIONS UNLESS YOU ARE QUALI-
FIED TO DO SO. REFER ALL SERVICING TO QUALIFIED SERV-
ICE PERSONNEL
WARNING: TO PREVENT FIRE OR ELECTRIC SHOCK HAZARD. DO
NOT EXPOSE THIS PRODUCT TO RAIN OR MOISTURE.
CAUTION: TO PREVENT ELECTRIC SHOCK DO NOT USE THIS (PO-
LARIZED) PLUG WITH AN EXTENSION CORD, RECEPTACLE OR
OTHER OUTLET UNLESS THE BLADES CAN BE FULLY INSERTED
TO PREVENT BLADE EXPOSURE.
Maintenance Manual
LBI-38551
CAUTION

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Summary of Contents for Ericsson GE MASTR II 19A149979P1

  • Page 1 LBI-38551 Mobile Communications MASTR II BASE STATION ® 12/24V POWER SUPPLY 19A149979P1 - 120 VOLT/60 Hz 19A149979P2 - 230 VOLT/50 Hz CAUTION THESE SERVICING INSTRUCTIONS ARE FOR USE BY QUALI- FIED PERSONNEL ONLY. TO AVOID ELECTRIC SHOCK DO NOT PERFORM ANY SERVICING OTHER THAN THAT CONTAINED IN THE OPERATING INSTRUCTIONS UNLESS YOU ARE QUALI- FIED TO DO SO.

  • Page 2: Table Of Contents

    50 Hz Power Supply ..........Copyright © January 1992, Ericsson GE Mobile Communications Inc.

  • Page 3: Specifications

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

  • Page 4: Important Safety Information

    LBI-38551 IMPORTANT SAFETY INFORMATION SAVE THIS MANUAL - It contains important 11. DO NOT operate this product in an explosive at- safety and operating instructions. mosphere unless it has been specifically certified for such operation. Before using the product, please follow and adhere to all warnings, safety and operating instructions 12.
  • Page 5 LBI-38551 Figure 1 - 60 Hz Power Supply (19A149979P1, Rev. A) Figure 2 - 50 Hz Power Supply (19A149979P2, Rev. A)

  • Page 6: Description

    The ON/OFF switch and all fuses are located on the front panel. The low profile ® The ERICSSON GE MASTR II Base Station 12/24 slot type fuse holders contain the primary fuse(s) F1 (F1 and...

  • Page 7: Maintenance

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

  • Page 9: Fuse Replacement

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

  • Page 14: Schematic Diagrams

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

  • Page 15: Parts List

    PARTS LIST LBI-38551...

  • Page 16: 50 Hz Power Supply

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

  • Page 17: 50 Hz Power Supply

    SCHEMATIC DIAGRAM LBI-38551 50 Hz POWER SUPPLY 19A149979P2, Rev. A (289PS4 Sh. 1, Rev. C)
  • Page 18 LBI-38551 PARTS LIST...

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Mastr ii 19a149979p2

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