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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