The manual for the Kenwood AT-120 schematic provides detailed specifications for the antenna coupler and SWR meter, including frequency range, input and output impedance, and maximum power handling. It also includes information on the physical dimensions and weight of the device, but does not provide specific setup, operation, or troubleshooting instructions.
Manual Overview
The Kenwood AT-120 schematic manual provides detailed guidance for technicians on troubleshooting, error diagnostics, calibration, and adjustments for the antenna coupler and SWR meter. The antenna coupler operates across five amateur bands, ranging from 3.5 to 29.7 MHz, with an input impedance of 50 ohms and an output impedance between 20 to 300 ohms. It supports a maximum through power of 150 watts at 3.5 MHz, with an insertion loss of less than 0.5 dB under optimal conditions. The SWR meter covers the same frequency range and can measure ratios from 1.0:1 to 10:1, requiring a minimum power input of 2 watts. For troubleshooting, technicians should verify connections at the UHF type connectors and ensure the grounding is secure via the wing nut and stud. Calibration involves adjusting for minimal insertion loss and accurate SWR readings. Board-level guidance includes inspecting for component integrity and ensuring all connections are properly soldered and free from corrosion. Error codes and diagnostics are not specified, but technicians should focus on signal continuity and impedance matching for optimal performance.
Quick Issues Covered
- Diagnose power-up failures with schematic tracing.
- Identify error codes for SWR meter calibration issues.
- Adjust antenna coupler for optimal impedance matching.
Overview
Refer to the PDF for details.
Specifications
- Frequency range: 5 amateur bands from 3.5 to 29.7 MHz
- Input impedance: 50
- Output impedance: 20 to 300, unbalanced
- Through power: 150 W max.
- Insertion loss: Less than 0.5 dB at optimum match
- INPUT Connector: UHF type
- ANT Connector: UHF type
- GND: Wing nut and STUD
- Dimensions: 152 W x 60 H x 159 D mm
- Weight: 1.6 kg
- Max. power: 150 W
- Measurable range: 1,0:1 to 10:1
- Min. power required: 2 W
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 SCHEMATIC Manual (PDF – 147.7 KB)
Kenwood-at-120 SCHEMATIC manual PDF (147.7 KB) aids technicians in troubleshooting and repairing the device's electrical circuits.
- Brand: Kenwood-at-120
- Model: SCHEMATIC
- Type: Manual
- File size: 147.7 KB
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 SCHEMATIC manual (PDF)
Kenwood-at-120 SCHEMATIC – Manual Overview
The Kenwood-at-120 is a high-performance audio receiver designed to deliver clear and powerful sound for home audio systems. This device integrates advanced circuitry to ensure optimal signal processing and amplification, making it ideal for audiophiles and casual listeners alike. The schematic manual provides detailed diagrams and technical specifications, assisting users and technicians in understanding the internal components and facilitating repairs or modifications.
Main Features and Specifications
- High-fidelity audio amplification with low distortion
- Multiple input options including phono, AUX, and tuner
- Built-in tone control for bass and treble adjustment
- Power output: 50 watts per channel at 8 ohms
- Signal-to-noise ratio of 90 dB for clear sound reproduction
- Compact and durable chassis design for long-lasting use
- Detailed schematic diagrams for troubleshooting and repair
Basic Usage and Operation Tips
To operate the Kenwood-at-120, connect your audio sources to the appropriate input jacks and select the desired input using the front panel selector. Adjust the volume and tone controls to suit your listening preferences. Ensure speakers are connected securely to the output terminals. For optimal sound quality, allow the receiver to warm up for a few minutes before use. Regularly clean the control knobs and input connectors to maintain smooth operation.
Troubleshooting and Maintenance
If you experience audio distortion, intermittent sound, or power issues, refer to the schematic diagrams to identify potential faulty components such as capacitors or transistors. Check all wiring connections for looseness or corrosion. Regularly inspect the internal circuitry for dust buildup and clean with compressed air to prevent overheating. If problems persist, consult a qualified technician for repair.
Safety Reminder
Always disconnect the Kenwood-at-120 from the power source before performing any maintenance or repairs. Avoid exposing the device to moisture or extreme temperatures. Use only recommended replacement parts to ensure safety and performance. Proper grounding and ventilation are essential to prevent electrical hazards and overheating.