Kenwood-th 46A.AT .E-SERVICE-MANUAL – Service manual (PDF)

Erik from ManualsPlus — Sun, 07 Dec 2025 15:49:37 +0000

The Kenwood TH-46A/AT/E service manual provides detailed instructions for disassembly and repair, including removing various units and components such as the TX/RX unit and control block, while also offering circuit descriptions and configurations for both receiving and transmitting systems. Additionally, it includes diagrams and specifications for troubleshooting and adjustments, ensuring proper setup and operation of the device.

Brand: Kenwood-th
Model: 46A.AT .E-SERVICE-MANUAL
Type: service manual
File size: 9.6 MB

Manual Overview

The Kenwood TH-46A/AT/E service manual provides detailed instructions for disassembly, circuit descriptions, and adjustments necessary for repair and maintenance. For troubleshooting, the manual outlines the process of disassembling the unit, including the removal of the case, TX/RX units, and control block. It emphasizes careful handling of FPC cables to avoid damage. The circuit description section details the frequency configuration, receiver system, and audio processing, including the RF amplifier, first mixer, IF amplifier, and AF amplifier. It also explains the squelch and mute circuit operations, which are controlled by the microprocessor based on input logic and functional conditions. The manual provides specifications for components like monolithic crystal filters and ceramic filters, essential for signal processing. Calibration and adjustments are guided by specific component ratings and configurations, ensuring optimal performance. Board-level guidance includes unsoldering techniques and the importance of maintaining correct polarity for components like the condenser microphone.