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Icom_D-STAR_ID-E880_serv


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VHF/UHF DIGITAL TRANSCEIVER




S-14529XZ-C1
Apr. 2009
                     INTRODUCTION                                                           CAUTION
This service manual describes the latest technical                   NEVER connect the transceiver to an AC outlet or to a DC
information for the ID-880H and ID-E880 VHF/UHF DIGITAL              power supply that uses more than specified. This will ruin
TRANSCEIVER at the time of publication.                              the transceiver.

                           TYPE OF          Max. TX POWER            DO NOT expose the transceiver to rain, snow or any liquids.
 MODEL VERSION
                           EMISSION           (VHF/UHF)
                                                                     DO NOT reverse the polarities of the power supply when
              [TPE]                                25/25             connecting the transceiver.
              [USA]
                                                                     DO NOT apply an RF signal of more than 20 dBm (100 mW) to
              [KOR]
 ID-880H                                                             the antenna connector. This could damage the transceiver's
              [AUS]                                                  front-end.
                           F2D, F3E,
              [CHN]
                             F7W                   50/50              To upgrade quality, any electrical or mechanical parts and
              [EXP]                                                   internal circuits are subject to change without notice or
              [EUR]                                                   obligation.
 ID-E880       [ITR]
            [EUR-01]




                                                                                                                      (ID-880H)




                   ORDERING PARTS                                                      REPAIR NOTES
Be sure to include the following four points when ordering           1. Make sure that the problem is internal before
replacement parts:                                                      disassembling the transceiver.
                                                                     2. DO NOT open the transceiver until the transceiver is
1. 10-digit Icom parts numbers                                          disconnected from its power source.
2. Component name                                                    3. DO NOT force any of the variable components. Turn
3. Equipment model name and unit name                                   them slowly and smoothly.
4. Quantity required                                                 4. DO NOT short any circuits or electronic parts. An
                                                                        insulated tuning tool MUST be used for all adjustments.
                                                      5. DO NOT keep power ON for a long time when the
                                                                        transceiver is defective.
 1110003491 S.ID   TA31136FNG ID-880E/ID-880H MAIN UNIT 5 pieces
                                                                     6. DO NOT transmit power into a Standard Signal
 8820001210 Screw 2438 screw   ID-880H/ID-E880 Top cover 10 pieces      Generator or a Sweep Generator.
                                                                     7. ALWAYS connect a 50 dB to 60 dB attenuator between
Addresses are provided on the inside back cover for your                the transceiver and a Deviation Meter or Spectrum
convenience.                                                            Analyzer when using such test equipment.
                                                                     8. READ the instructions of test equipment throughly
                                                                        before connecting a test equipment to the transceiver.




Icom, Icom Inc. and IDOM logo are registered trademarks of Icom Incorporated (Japan) in the United States, the United
Kingdom, Germany, France, Spain, Russia and/or other countries.
                                                   TABLE OF CONTENTS


SECTION   1     SPECIFICATIONS

SECTION   2     INSIDE VIEWS

SECTION   3     DISASSEMBLY INSTRUCTION

SECTION   4     CIRCUIT DESCRIPITON
          4-1    RECEIVER CIRCUITS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
          4-2    TRANSMITTER CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
          4-3    FREQUENCY SYNTHESIZER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
          4-4    CPU (MAIN UNIT; IC25) PORT ALLOCATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
          4-5    VOLTAGE BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8


SECTION   5     ADJUSTMENT PROCEDURE
          5-1    PREPARATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
          5-2    FREQUENCY AND TRANSMIT AMPLIFIER ADJUSTMENTS. . . . . . . . . . . . . . . . . . . . . . . . . 5-3
          5-3    ANALOG DEVIATION ADJUSTMENTS (VHF BAND). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
          5-4    ANALOG DEVIATION ADJUSTMENTS (UHF BAND) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
          5-5    DIGITAL DEVIATION ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
          5-6    RECEIVE SENSITIVITY ADJUSTMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7
          5-7    S-METER ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
          5-8    SQUELCH ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9


SECTION   6     PARTS LIST

SECTION   7     MECHANICAL PARTS

SECTION   8     BOARD LAYOUTS

SECTION   9     BLOCK DIAGRAM

SECTION   10 VOLTAGE DIAGRAM
                 CONTROL UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1
                 MAIN UNIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-2
         SECTION 1.                                                    SPECIFICATIONS

D GENERAL                                                                                      D TRANSMITTER



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