ICOM IC F121S Manuals

Manuals and User Guides for ICOM IC F121S. We have 1 ICOM IC F121S manual available for free PDF download: Service Manual

Icom IC F121S Service Manual

Icom IC F121S Service Manual (75 pages)

IC-F110S/F111S/F121S service manual

Brand: Icom | Category: Transceiver | Size: 5.01 MB

Table of Contents

Repair Notes
2
Ordering Parts
2
Channel Spacing
3
Explicit Definitions
3
Frequency Coverage
3
Table of Contents
3
Specifications
4
Inside View
5
Disassembly Instructions
6
Installation Location
6
Opening Case and Remove the Front Panel
6
Removing the Main Unit
6
Circuit Description

7
- Receiver Circuits
  7
  - Antenna Switching Circuit
    7
  - Rf Circuit (Main Unit)
    7
- Transmitter Circuits
  8
- Pll Circuits
  9
- Power Supply Circuits
  10
- Port Allocations
  10
  - Output Expander
    10
  - Voltage Lines
    10
Section 11 Voltage Diagrams

7
Section 2 Inside View

7
Section 3 Disassembly Instructions

7
Adjustment Procedures

12
- Adjustment Software Installation
  12
- Preparation
  12
  - Starting Software Adjustment
    12
  - System Requirements
    12
  - Connections
    13
  - Required Test Equipment
    13
  - Screen Display Exampe
    14
- Pll Adjustment
  15
- Software Adjustment
  16
- Front Panel
  18
- Trimmer Adjustment
  18
Section 9 Board Layouts

19
Section 8 Semi-Conductor Information

19
- Parts List
  19
- Front Unit
  19
  - Mechanical Parts
    25
  - Semi-Conductor Information
    27
  - Transistors and Fet’s
    27
  - Diode
    27
  - Board Layouts
    28
  - Front Unit
    28
  - Bottom View (Front Unit)
    29
- Main Unit
  30
  - Bottom View (Main Unit)
    31
  - Block Diagram
    32
  - Voltage Diagrams
    33
Section 11 Voltage Diagrams

44
Section 3 Disassembly Instructions

44
Section 2 Inside View

44
- Main Unit
  44
- Circuit Description
  44
- Receiver Circuits
  44
- Transmitter Circuits
  45
- Pll Circuits
  46
- Power Supply Circuits
  47
- Port Allocations
  47
- Adjustment Procedures
  49
- Preparation
  49
- Pll Adjustment
  52
- Software Adjustment
  53
- Trimmer Adjustment
  55
Section 9 Board Layouts

56
Section 8 Semi-Conductor Information

56
- Front Unit
  56
- Main Unit
  57

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