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Make/Model Information:

  • Brand:   Icom
  • Models included:
    • Icom IC-F310
    • Icom IC-F310S
    • Icom IC-F320
    • Icom IC-F320S

File Information:

  • Type:   Factory Service Manual (FSM)
  • Language:   English (EN)
  • Number of pages:   42
  • File size:  ∼ 2.50 MB
  • File Format:   PDF only
  • SME Watermarks:   None
  • Password lock:   No
  • Edit/copy/modify:   Yes
  • SKU:   ROIC-0073

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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SERVICE
MANUAL
VHF FM TRANSCEIVER
INTRODUCTION
This service manual describes the latest service information
for the IC-F310, IC-F310S, IC-F320 and IC-F320S VHF FM
TRANSCEIVER at the time of publication.
To upgrade quality, any electrical or mechanical parts and
internal circuits are subject to change without notice or
obligation.
DANGER
NEVER connect the transceiver to an AC outlet or to a DC
power supply that uses more than 16 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. This could damage the transceiv-
er's front end.
ORDERING PARTS
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

1150001930 IC SC-1364 IC-F310 MAIN UNIT 5 pieces
8810005840 Screw PH BT M3 x 8 NI-ZU IC-F310 Bottom cover 10 pieces
Addresses are provided on the inside back cover for your
convenience.
REPAIR NOTES
1. Make sure a problem is internal before disassembling the
transceiver.
2. DO NOT open the transceiver until the transceiver is dis-
connected 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 insu-
lated tuning tool MUST be used for all adjustments.
5. DO NOT keep power ON for a long time when the trans-
ceiver 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 deviation meter or spectrum ana-
lyzer when using such test equipment.
8. READ the instructions of test equipment thoroughly
before connecting equipment to the transceiver.
iF310/F320
iF310S/F320S
EXPLICIT DEFINITIONS
VERSIONS
LMR (Land Mobile Radio)
PMR (Personal Mobile Radio)
F320/F320S
F310/F310S
U.S.A. version
European version
FREQUENCY COVERAGE
H-band
136155 MHz
146174 MHz
CHANNEL SPACING
Wide/Narrow-type 25 kHz/12.5 kHz
TABLE OF CONTENTS
SECTION 1 SPECIFICATIONS
SECTION 2 INSIDE VIEW
SECTION 3 DISASSEMBLY INSTRUCTIONS
SECTION 4 CIRCUIT DESCRIPTION
4 - 1 RECEIVER CIRCUITS
4 - 2 TRANSMITTER CIRCUITS
4 - 3 PLL CIRCUITS
4 - 4 POWER SUPPLY CIRCUITS
4 - 5 PORT ALLOCATIONS
SECTION 5 ADJUSTMENT PROCEDURES
5 - 1 PREPARATION
5 - 2 PLL ADJUSTMENT
5 - 3 TRIMMER ADJUSTMENT
5 - 4 BEEP ADJUSTMENT
SECTION 6 PARTS LIST
SECTION 7 MECHANICAL PARTS
SECTION 8 SEMI-CONDUCTOR INFORMATION
SECTION 9 BOARD LAYOUTS
9 - 1 FRONT UNIT (IC-F310/F320)
9 - 2 FRONT UNIT (IC-F310S/F320S)
9 - 3 MAIN UNIT (IC-F310/F310S)
9 - 4 MAIN UNIT (IC-F320/F320S)
SECTION 10 BLOCK DIAGRAM
SECTION 11 VOLTAGE DIAGRAM
11 - 1 FRONT UNIT
11 - 2 MAIN UNIT
All stated specifications are subject to change without notice or obligation.
Mesurement method
Frequency coverage
Number of channels
Type of emission
Frequency stability
Operating temperature range
Power supply voltage
Current drain
TX max. power
(approx.) RX
max. audio
stand-by
Antenna connector
Dimensions (proj. not included)
Output power
Modulation system
Max. freqequency deviation
Spurious emissions
Adjacent channel power
Residual modulation
Limitting charact of modulator
Microphone connector
Intermediate frequency
Sensitivity
Squelch sencitivity
Adjcent chnnel selectivity
Spurious response
Intermoduration
Hum and noise
Audio output power
External SP connector
IC-F310/F310S (PMR) IC-F320/F320S (LMR)
RECEIVER TRANSMITTER GENERAL
ETS 300 086 EIA/TIA-152C/204D
136155 MHz
146174 MHz
F310 : 32 (16 ch
F310S: 8 ch, or 4 ch
16K0F3E (25 kHz; Wide)
8K50F3E (12.5 kHz; Narrow)
1500 Hz 0.0005%
20C to +55C 30C to +60C; 22F to +140F
13.2 V DC (negative ground) 13.6 V DC (negative ground)
7.0 A (at 25 W) / 6.0 A (at 10 W) 15.0 A (at 45 W)
200 mA
SO-239 (50 )
140(W)
1.2 kg; 2 lb 10 oz
25 W / 10 W 45 W
Variable reactance frequency modulation
5.0 kHz (Wide)
2.5 kHz (Narrow)
0.25 W 70 dB
70 dB minimum (Wide)
60 dB minimum (Narrow)
55 dB typical (Wide) 46 dB typical (Wide)
50 dB typical (Narrow) 40 dB typical (Narrow)
70100 % of modulation
8-pin modular (600 )
1st: 31.05 MHz
2nd: 450 kHz
4 dBV (emf) at 20 dB SINAD 0.22 V typical at 12 dB SINAD
4 dBV (emf) 0.22 V typical
70 dB (Wide)
60 dB (Narrow)
55 dB typical (Wide) 46 dB typical (Wide)
50 dB typical (Narrow) 40 dB typical (Narrow)
3.5 W typical at 10% distortion with a 4 load
2-conductor 3.5 (d) mm (1/8")/4
SECTION 1 SPECIFICATIONS
SECTION 9 BOARD LAYOUTS
9-1 FRONT UNIT (IC-F310/F320)
TOP VIEW
HANGER
to Microphone
1-1-32, Kamiminami, Hirano-ku Osaka 547-0003, Japan
A-5560SZ-SV-2
19992003 Icom Inc.


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