The Icom service manual for the IC-2400A, IC-2400E, IC-2500A, and IC-2500E dual band FM transceivers provides detailed instructions on setup, operation, and troubleshooting, including specifications, circuit descriptions, mechanical parts, and adjustment procedures. It emphasizes safety precautions such as avoiding exposure to liquids and ensuring correct power supply connections to prevent damage to the transceivers.
Manual Overview
The Icom Service Manual for the IC-2400A/E and IC-2500A/E dual-band FM transceivers provides detailed guidance on troubleshooting, error diagnostics, calibration, and board-level repairs. Troubleshooting begins with ensuring the problem is internal before disassembly and emphasizes not forcing variable components or shorting circuits. Calibration involves precise adjustments using insulated tools, particularly for PLL, receiver, and transmitter circuits. Error diagnostics include checking power supply connections, ensuring correct polarity, and avoiding excessive RF signals to prevent damage. The manual outlines board layouts for logic and main units, essential for understanding circuit functions. It also includes adjustment procedures specific to each model, covering PLL and receiver/transmitter settings. Detailed schematics and voltage diagrams assist in identifying and resolving issues at the component level. The manual stresses safety precautions, such as disconnecting power before servicing and using attenuators with test equipment to avoid damage.
Overview
The service manual provides detailed information for the Icom dual band FM transceivers, specifically the IC-2400A, IC-2400E, IC-2500A, and IC-2500E models. It includes specifications, circuit descriptions, mechanical parts and disassembly instructions, adjustment procedures, board layouts, block diagrams, and voltage diagrams. The manual also contains safety warnings and repair notes to ensure proper handling and servicing of the transceivers.
Specifications
- BAND: 144 MHz, 430 or 440 MHz, 1200 MHz
- Tuning step increment: 5, 10, 15, 20 or 25 kHz, 10 or 20 kHz, 12.5 or 25 kHz
- Memory channels: 40 and 2 call channels
- Mode: FM (F3)
- Antenna impedance: 50 Q (unbalanced)
- Power supply requirement: 13.8 V DC+15% (negative ground)
- Current drain HIGH Transmit: 10.5A, 105A, 105A, 6.6A
- Current drain LOW Transmit: 4.5A, 5.0A, 5.0A, 40A
- Current drain Squelched Receive: 10A, 1.0A, 10A, 1.0A
- Max. audio output: 14A, 144A, 114A, 14A
- Usable temperature range: —10°C~ +60°C (+14° F~ + 140° F)
- Dimensions: 150 (W) x 50 (H) x 195 (D) mm
- Weight: 1.7 kg (3.7 Ib), 1.8 kg (4.0 Ib)
- Output power HIGH: 45 W, 35 W, 35 W, W
- Output power LOW: 5W, 5W, 5W, 1W
- Spurious emissions (less than): 60 dB, 60 dB, 60 dB, —40 dB (at 1 W)
- Microphone impedance: 600
- Intermediate frequencies 1st: 17.2 MHz, 30.875 MHz, 30.875 MHz, 136.6 MHz
- Intermediate frequencies 2nd: 455 kHz, 17.2 MHz
- Intermediate frequencies 3rd: 455 kHz
- Sensitivity (for 12 dB SINAD): 0.18 pV, 0.18 HV, 0.18 pV, 0.22 UV
- Spurious response rejection: Less than –60 dB (except 1/2 IF on 1200 MHz)
- Audio output power: More than 2.4 W at 10 % distortion with an 8 Q load
- Audio output impedance: A~8Q
Controls & Indicators
Refer to the PDF for details.
Installation / Setup
Refer to the PDF for details.
Operation
Refer to the PDF for details.
Troubleshooting & Error Codes
Refer to the PDF for details.
Safety & Warnings
Refer to the PDF for details.
Download MANUAL Service manual (PDF – 25.7 MB)
Icom IC-2500A/IC-2500E service manual PDF for troubleshooting and repair guidance. File size: 25.7 MB.
- Brand: Icom-ic-2500a-ic-2500e-service
- Model: MANUAL
- Type: Service manual
- File size: 25.7 MB
Overview
Brief overview of the product.
Specifications
- Key spec 1
- Key spec 2
Controls & Indicators
Control panel/button layout.
Installation / Setup
- Step 1…
- Step 2…
Operation
Basic usage, modes, cycles.
Troubleshooting & Error Codes
| Issue / Code | Fix |
|---|---|
| Example | How to fix… |
Safety & Warnings
- Important warning…
Downloads
Download MANUAL service manual (PDF)
Icom IC-2500A / IC-2500E Service Manual Overview
The Icom IC-2500A and IC-2500E are advanced dual-band mobile transceivers designed for reliable communication in professional and amateur radio environments. These devices provide high-performance VHF/UHF transmission capabilities, making them ideal for use in vehicles, emergency services, and outdoor operations. This service manual offers detailed guidance on maintenance, troubleshooting, and repair to ensure optimal device functionality.
Main Features and Specifications
- Dual-band operation: VHF (144–148 MHz) and UHF (430–450 MHz)
- Output power: Up to 50 watts on both bands
- Wide frequency coverage with programmable memory channels
- 128 alphanumeric memory channels with alpha-numeric display
- Built-in CTCSS and DTCS tone encoder and decoder
- Multiple scanning functions including priority and memory scan
- Compact and rugged design suitable for mobile installation
- Optional voice scrambler and DTMF autodialer support
Basic Usage and Operation Tips
To operate the IC-2500A/E, first ensure the antenna and power supply are properly connected. Select the desired band and frequency using the front panel controls or programmed memory channels. Adjust the volume and squelch settings for clear audio reception. Utilize the scanning feature to monitor multiple channels efficiently. For optimal performance, regularly update memory channels and settings according to your communication needs.
Troubleshooting and Maintenance Notes
If you experience distorted audio, intermittent transmission, or failure to power on, consult the service manual’s troubleshooting section for diagnostic procedures. Common maintenance tasks include cleaning the microphone connector, inspecting antenna connections, and checking the power supply voltage. Avoid unauthorized modifications to prevent damage and ensure compliance with regulatory standards.
Safety Reminder
Always disconnect the power source before performing any maintenance or repair work. Use only manufacturer-recommended replacement parts and accessories. Ensure proper ventilation during operation to prevent overheating. Follow all local regulations regarding radio transmission to avoid interference and ensure safe usage.