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Make/Model Information:

  • Brand:   Icom
  • Models included:
    • Icom IC-2820H

File Information:

  • Type:   Factory Service Manual (FSM)
  • Language:   English (EN)
  • Number of pages:   55
  • File size:  ∼ 5.10 MB
  • File Format:   PDF only
  • SME Watermarks:   None
  • Password lock:   No
  • Edit/copy/modify:   Yes
  • SKU:   ROIC-0023

NOTE:  This list was created by program script and may not accurately represent the text from the source pages.   For full preview please click on 'Download sample':

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S-14325XZ-C1
Mar. 2007
DUAL BAND FM TRANSCEVER
This service manual describes the latest service information
for the IC-2820H DUAL BAND FM TRANSCEVER at the
time of publication.
NEVER connect the transceiver to an AC outlet or to a DC
power supply that uses more than 15 V. This will ruin the
transceiver.
DO NOT expose the transceiver to rain, snow or any liquids.
DO NOT reverse the polarities of the power supply when
connecting the transceiver.
DO NOT apply an RF signal of more than 20 dBm (100 mW)
to the antenna connector (J1). This could damage the
transceiver’s front end.
To upgrade quality, any electrical or mechanical parts and
internal circuits are subject to change without notice or
obligation.
MODEL VERSION
IC-2820H
USA-01
AUS-01
KOR-01
TPE-01
EXP-01
Be sure to include the following four points when ordering
replacement parts:
1. 10-digit order numbers
2. Component part number and name
3. Equipment model name and unit name
4. Quantity required

1110003491 S.IC TA31136FNG IC-2820H MAIN UNIT 5 pieces
8820001210 Screw 2438 screw IC-2820H Top cover 10 pieces
Addresses are provided on the inside back cover for your
convenience.
Icom, Icom Inc. and logo are registered trademarks of Icom Incorporated (Japan) in the United States, the United
Kingdom, Germany, France, Spain, Russia and/or other countries.
ORDERING PARTS
1. Make sure a problem is internal before disassembling
the transceiver.
2. DO NOT open the transceiver until the transceiver is
disconnected from its power source.
3. DO NOT force any of the variable components. Turn
them slowly and smoothly.
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.
6. DO NOT transmit power into a signal generator or a
sweep generator.
7. ALWAYS connect a 50 dB to 60 dB attenuator between
the transceiver and a Modulation Analyzer or spectrum
analyzer when using such test equipment.
8. READ the instructions of test equipment thoroughly
before connecting equipment to the transceiver.
REPAIR NOTES
INTRODUCTION CAUTION
CONTENTS
SECTION 1 SPECIFICATIONS
SECTION 2 INSIDE VIEWS
SECTION 3 DISASSEMBLY INSTRUCTIONS
SECTION 4 CIRCUIT DESCRIPITON
4-1 RECEIVER CIRCUITS
4-2 TRANSMITTER CIRCUITS
4-3 FREQUENCY SYNTHESIZER
4-4 POWER SUPPLY CIRCUITS
4-5 PORT ALLOCATIONS
SECTION 5 ADJUSTMENT PROCEDURES
5-1 PREPARATION
5-2 FREQUENCY ADJUSTMENT
5-3 TRANSMIT ADJUSTMENT
5-4 RECEIVE ADJUSTMENT
SECTION 6 PARTS LIST
SECTION 7 MECHANICAL PARTS
SECTION 8 BOARD LAYOUTS
SECTION 9 BLOCK DIAGRAM
SECTION 10 VOLTAGE DIAGRAM
SECTION 11 HM-133
SECTION 12 UT-123 (Optional product)
SECTION 1 SPECIFICATIONS
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SECTION 3 DISASSEMBLY INSTRUCTION
1. Removing the top cover
q Unscrew 10 screws, then remove the top cover.
3. Removing the MAIN UNIT
q Unscrew 11 screws from the MAIN UNIT.
2. Removing the bottom cover
q Unscrew 7 screws, then remove the bottom cover.
10 screws
Top cover
w Disconnect the speaker cable.
Speaker cable
Bottom cover
7 screws
w Disconnect the cooling fan cable, and unsolder 6 points at
the antenna connectors (grey colored).
6 unsoldering points
Cooling fan cable
MAIN UNIT
e Remove the MAIN UNIT in the direction of the arrow.
12 - 2
MAIN UNIT (BOTTOM VIEW)
15C C52
MAIN UNIT (TOP VIEW)
R 1 0 6 R 1 0 7
B9466B
0H 5H 01H 51H 02H 52H 03H 5 3H 04H 54H 05H 55H 06H V0 V5 V10 V15 V20 V25 V30 V35 V40 V45 V50 V55 V60
BOARD LAYOUTS
1-1-32, Kamiminami, Hirano-ku, Osaka 547-0003, Japan S-14310XZ-C1
2007 Icom Inc.


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