Ericsson 19D901841G3 Maintenance Manual
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Ericsson 19D901841G3 Maintenance Manual

Ericsson 19D901841G3 Maintenance Manual

851-870 mhz, 100 watt power amplifier
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MAINTENANCE MANUAL
851-870 MHz, 100 WATT POWER AMPLIFIER
19D901841G3
TABLE OF CONTENTS
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Front Cover
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CIRCUIT ANALYSIS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INTERCONNECTION DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OUTLINE DIAGRAMS
Power Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Control Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Buffer Amplifier Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SCHEMATIC DIAGRAMS
PowerAmplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Control Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Amplifier Fan Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SPECIFICATIONS*
POWER OUTPUT
100 Watts (adjustable from 50 watts to rated power output).
FCC FILING
AXATR-329
SPURIOUS AND HARMONIC EMISSION
-13dBm output (conducted)
(per EIA RS-152-B Par. 4)
-13dBm (Radiated)
DUTY CYCLE
Continuous
RF OUTPUT IMPEDANCE
50 ohms
*These specifications are intended primarily for the use of the serviceman. Refer to the appropriate Specification Sheet for
the complete specifications.
Although the highest DC voltage supplied to the transmitter is + 24VDC, high currents may be drawn under short circuit
conditions. These currents can heat metal objects such as tools, rings, watchbands, etc., enough to cause burns. Be careful
when working near energized 24 Volt circuits!
High level RF energy in the transmitter Power Amplifier assembly can cause RF burns upon contact. KEEP AWAY FROM
THESE CIRCUITS WHEN THE TRANSMITTER IS ENERGIZED!
LBI-39030A
WARNING
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Printed in U.S.A.

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Summary of Contents for Ericsson 19D901841G3

  • Page 1 LBI-39030A MAINTENANCE MANUAL 851-870 MHz, 100 WATT POWER AMPLIFIER 19D901841G3 TABLE OF CONTENTS Page SPECIFICATIONS ..........Front Cover DESCRIPTION .

  • Page 2: Description

    Supply voltage for Q3 is applied through collector feed The 19D901841G3 800 MHz power amplifier assembly network Z2, C16-C18, and L11. The output of Q3 is matched In a MASTR III station application, the binary input used in MASTR III station applications uses seven RF power to 50 ohms by microstrip W2.
  • Page 3 INTERCONNECTION DIAGRAN LBI-39030 LBI-39030 POWER AMPLIFIER 19D901841G3 (19D902064, Sh. 1, Rev. 1)

  • Page 4: Interconnection Diagram

    INTERCONNECTION DIAGRAM LBI-39030 LBI-39030 POWER AMPLIFIER 19D901841G3 (19D901841, Sh. 2, Rev._)
  • Page 5 OUTLINE DIAGRAN LBI-39030 LBI-39030 SOLDER SIDE COMPONENT SIDE POWER AMPLIFIER 19D901841G3 (19D901807, Sh. 2, Rev. 6) (19D705468, Sh. 1, Rev. 3) (19A705468, Sh. 2, Rev. 1)
  • Page 6 SCHEMATIC DIAGRAM LBI-39030 LBI-39030 POWER AMPLIFIER 19D901841G3 (19D902062, Rev. 4)
  • Page 7 OUTLINE DIAGRAN LBI-39030 LBI-39030 COMPONENT SIDE SOLDER SIDE POWER AMPLIFIER 19D901803G3 (19D901803, Sh. 1, Rev. 1) (19D902059, Component Side, Rev. 1) (19D902059, Solder Side, Rev. 1)

  • Page 8: Power Control Board

    SCHEMATIC DIAGRAM LBI-39030 LBI-39030 POWER CONTROL BOARD 19D901803G3 (19D902060, Sh. 1, Rev. 2)

  • Page 9: Buffer Amplifier Assembly

    DESCRIPTION SYMBOL PART NUMBER DESCRIPTION 19D901841G3 ISSUE 2 Deposited carbon: 1K ohms ±5%, 1/4 w. PART OF PWB - - - - - - - - - - - JACKS - - - - - - - - - -...
  • Page 10 PARTS LIST LBI-39030 LBI-39030 SYMBOL PART NUMBER DESCRIPTION SYMBOL PART NUMBER DESCRIPTION PRODUCTION CHANGES Changes in the equipment to improve performance or to simplify circuits are identified by a 19A149542P2 Silicon, PNP: sim to MJD32C-1. - - - - - - - - MISCELLANEOUS - - - - - - - - "Revision Letter", which is stamped after the model number of the unit.
  • Page 11 OUTLINE DIAGRAM LBI-39030 LBI-39030 (188D5056, Rev. 5) BUFFER AMPLIFIER (188D5058, Rev. 4) 188D5056G1...

  • Page 12: Power Amplifier Fan Assembly

    SCHEMATIC DIAGRAM LBI-39030 LBI-39030 POWER AMPLIFIER FAN ASSEMBLY 19D438235G9 (19D438235, Sh. 2, Rev. 1)

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