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Icom
IC F121S, IC F110S, IC F111S
service manual
Service Manual
Models:
IC F121S
IC F110S
IC F111S
1
38
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74 pages
32.71 Kb
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Parts list
Section Block Diagram
Disassembly Instructions
Starting Software Adjustment
Power Supply Circuits
Service Manual
Page 38
Image 38
SERVICE
MANUAL
UHF TRANSCEIVER
iF210S
iF211S
iF221S
Page 37
Page 39
Page 38
Image 38
Page 37
Page 39
Contents
IF110S IF111S IF121S
Repair Notes
Introduction
Ordering Parts
Explicit Definitions
EUR
Receiver
Section Inside View
Disassembly Instructions
3 1ST Mixer and 1ST if Circuits Main Unit
Antenna Switching Circuit Main Unit
Receiver Circuits
RF Circuit Main Unit
Transmitter Circuits
APC Circuit Main Unit
Power Amplifier Circuit Main Unit
PLL Circuits
PLL Circuit Main Unit
Power Supply Circuits
Port Allocations
CPU
Preparation
Adjustment Software Installation
Starting Software Adjustment
System Requirements
Required Test Equipment
Equipment Grade and Range
Screen display exampe
PLL Adjustment
Voltage
Software Adjustment
Power
Software Adjustment
Convenient
Trimmer Adjustment
Section Parts List
Front Unit
Unit
Main Unit
Posistor PRF18BD471QB1RB
Ceramic
Tantalum ECST1CY105R
=Surface mount
Mechanical Parts
Main Unit
SEMI-CONDUCTOR Information
Board Layouts
Bottom View Front Unit
ANT
Bottom View Main Unit
Section Block Diagram
Voltage Diagrams
Main Unit
Beepo Pwon
Page
Page
Service Manual
IC-F210S
Low Band 400-430 MHz High Band 440-490 MHz
Type of emission 12.5 kHz Narrow/25 kHz Wide 8K50F3E/16K0F3E
IC3
Disassembly Instructions
2nd if filter 450 kHz
Transmitter Circuits
IC4 MB15A02PFV1
Output Expander Main unit IC6
Switching circuit Main unit Q23
Adjustment Procedures
FM deviation meter RF power meter
CH No RX Freq = 440.200000, TX Freq = RF Power High
C133
430.000 MHz Panel Counter to the antenna connec MHz L
Operating freq 400.000 MHz L
Trimmer Adjustment
Ceramic ECJ0EB1C153K
Coil LQW2BHN15NJ01L
Coil Eljre R10G-F
Ceramic GRM31M4C2H2R0CY21L
Tantalum
CH 1H
8010019060 Chassis 25W 8010019130 Long chassis 45W
MP8 M
DAN222TL DSA3A1 HVC350B
Board Layouts
Bottom View Front Unit
Chassis IC3 EP3 EP2
Bottom View Main Unit
Tmut
R29 18k C19
NTCG20
VCC1 VCC2
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