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Ann StephensonAug 3, 2025
What to do if /DRST is 0V on Kenwood TK-5810?
- MMary ReedAug 3, 2025
If the /DRST is 0V, the ASIC, FLASH, or SRAM may be broken.
To Next PageTo Next PageWhat to do if /DRST is 0V on Kenwood TK-5810?
If the /DRST is 0V, the ASIC, FLASH, or SRAM may be broken.
What to do if /FRST repeats 3.3V and 0V at intervals on Kenwood Transceiver?
If the /FRST repeats 3.3V and 0V at intervals, the ASIC, FLASH, and SRAM may be broken.
What to do if /FRST is always 0V on Kenwood TK-5810?
If the /FRST is always 0V, the ASIC is broken.
What to do if Kenwood Transceiver LCD displays “INIT ERROR1”?
If the LCD displays “INIT ERROR1”, it indicates an error occurred when the ASIC internal RAM reads or writes. In this case, the ASIC may be broken.
What to do if Kenwood TK-5810 LCD displays “INIT ERROR2”?
If the LCD displays “INIT ERROR2”, it means an error occurred when the DSP internal RAM reads or writes. The DSP may be broken, so consider checking that.
What to do if Kenwood Transceiver LCD displays “INIT ERROR3”?
If the LCD displays “INIT ERROR3”, it signifies an error during the SRAM internal RAM read or write process. The SRAM itself may be broken.
General| Channel Capacity | 128 channels |
|---|---|
| Weight | 300 g |
| Channel Spacing | 12.5 / 25 kHz |
| Power Output | 5 W |
| Modulation | 16K0F3E, 11K0F3E |
| Frequency Range | 136-174 MHz |
Recommended precautions for user safety during operation and service.
Steps and checks to perform before installing the transceiver.
Considerations for mounting the radio and routing cables.
Notes on servicing the transceiver using manual diagrams and procedures.
Describes the various operating and test modes of the transceiver.
Instructions on how to access different operational modes.
Details on how to use the panel test mode for diagnostics.
Explains the procedure for tuning the transceiver via the panel.
Covers communication and programming using a PC.
Steps for connecting the transceiver to a computer for programming.
Description of KPG-43/43A and KCT-53U cables.
Overview of the KPG-95DG programming software.
Details on making adjustments using PC tuning mode.
Procedure for updating transceiver firmware.
Instructions on how to check the firmware version.
Procedure for adjusting the transceiver's clock and date.
How to view transceiver information.
Explains data transfer between transceivers.
Details on programming via FPU.
Lists programmable items for self-programming.
Describes key functions in different modes.
Visual guide for self programming steps.
Covers installation of KCH-14/15 front panel kits.
Step-by-step guide for mounting the KCH-14/15 panel.
Describes keytop installation for customization.
Covers installation of KRK-5 remote control kit.
Step-by-step guide for mounting the KRK-5 main panel.
Guide for attaching the rear panel to the front kit.
Instructions for connecting the KCT-22 cable.
Steps for installing the display unit with bracket.
Covers installation of KRK-6DH dual control system.
Guide for mounting the main panel of the dual control kit.
Instructions for attaching rear panels to front kits.
Steps for connecting KCT-22 cables for dual displays.
Optional cable for ignition and timed power-off functions.
Steps to connect the ignition sense cable to the transceiver.
Instructions for connecting the cable to KRK-5/6DH kits.
Details installation of the VGS-1 unit.
Step-by-step guide for installing the VGS-1 unit.
Information on using an external speaker.
Instructions for connecting the KES-5 speaker.
Guide for connecting speaker to KRK-5/6DH kits.
Steps to increase control head audio output.
Instructions for using the transceiver for public address.
Details the horn alert function and modification.
Information about the KCH-16 handheld control head.
Steps to disassemble the TK-5810(BG) model.
Instructions for removing the outer case components.
Steps to remove the TX-RX unit.
Guide for disassembling the final unit.
Steps to disassemble the TK-5810H(BG) model.
Instructions for removing outer case components.
Steps to remove the TX-RX unit.
Guide for disassembling the final unit.
Instructions for removing the control unit.
Steps to disconnect cables.
Important notes for reassembling the unit.
Cable connection alignment for TK-5810H(BG).
Verifying case packing fit.
Recommended order for tightening case screws.
General overview of the transceiver's function and range.
Explains frequency mixing and conversion.
Details the receiver circuitry stages.
Description of the RF amplifier circuit.
Explanation of the first local oscillator stage.
Describes the first IF signal processing path.
Details the second local oscillator circuit.
Explains the second IF signal processing.
Explains audio signal processing and amplification.
Details the squelch circuit operation.
Overview of the transmitter circuitry.
Describes the audio path for the transmitter.
Explains baseband signal processing for FM and P25 modes.
Describes the drive amplifier stage.
Details the final amplifier for the TK-5810(BG).
Details the final amplifier for the TK-5810H(BG).
Explains APC circuit for power stabilization.
Details thermal protection for TK-5810(BG).
Details thermal protection for TK-5810H(BG).
Overview of PLL components.
Description of the Voltage Controlled Crystal Oscillator.
Description of Voltage Controlled Oscillators.
Details the function of the potentiometer IC.
Explains the circuit for VCO frequency convergence.
Describes the Phase Locked Loop IC.
Explains the function of the local switches.
Explains the control circuit functions.
Details the ASIC processor functions.
Describes flash memory, SRAM, and RTC.
Details of flash memory contents and usage.
Details of SRAM usage and backup.
Details of the real-time clock functionality.
Overview of the display unit components.
Explains temperature monitoring and correction.
Details the Digital Signal Processor functions.
Describes the power supply system.
Lists components for the TK-5810(BG) final unit.
Lists components for the TK-5810H(BG) final unit.
Lists components for the control unit.
Lists components for the TX-RX unit.
Details capacitor types, sizes, and values.
Details resistor types, sizes, and power ratings.
Lists components for the final unit, including cabinets and chassis.
Lists components for the TK-5810H(BG) final unit.
Lists components for the control unit.
Lists components for the TX-RX unit.
Lists components for the TX-RX unit.
Introduction to troubleshooting flowchart.
Lists critical BGA components for diagnosis.
Steps for checking voltage, clock, and signals.
Guides on pinpointing faulty components.
Verifying ASIC output signals.
Troubleshooting panel controls for unit and KCH.
Checking clock and control signals.
Troubleshooting specific LCD error messages.
Guidance on replacing the control unit.
Overview of KCH-14 and KCH-15 panel controls.
Explains how to enter and use panel test mode.
Describes key functions in different modes.
Explanation of LED indicators and LCD in test mode.
Details available filter modes.
Lists test frequencies and signaling parameters.
Procedures for panel tuning.
Setup required before transceiver tuning.
Steps to access tuning mode.
Description of the LCD during tuning.
Key functions for tuning adjustments.
Adjusting frequency reference levels.
Adjusting assist voltages.
Other tuning parameters.
Lists all adjustable parameters and their display codes.
Visual guides for performing various adjustments.
Steps to measure BER using panel test mode.
Procedure for adjusting C4FM deviation.
Lists essential test equipment for calibration.
Details MIC connector, input, and output cables.
General calibration procedures.
Setup for DC voltage and SSG modulation.
Procedure for adjusting transmit assist voltage.
Steps for adjusting lower and upper RX assist voltages.
Coil adjustment for wide band MCF.
Adjusting the second local oscillator frequency.
Adjusting the quadrature coil.
Adjusting the transceiver's internal clock.
Steps for adjusting transmit frequency.
Covers transmitter calibration.
Verifying operational frequencies.
Adjusting maximum output power.
Adjusting high power output.
Adjusting low power output.
Procedure for adjusting signal balance.
Adjusting maximum deviation for wide and narrow modes.
Adjusting high deviation for P25 mode.
Procedure for adjusting MIC sensitivity.
Adjusting QT fine deviation for wide and narrow.
Adjusting DQT fine deviation for wide and narrow.
Adjusting DTMF deviation for wide and narrow.
Adjusting single tone deviation for wide and narrow.
Adjusting MSK deviation for wide.
Continues MSK deviation adjustment for narrow.
Table detailing deviation adjustments by mode.
Calibration steps for the receiver section.
Procedure for adjusting RX front end.
Procedure to set audio frequency level.
Steps to check receiver sensitivity.
Adjusting squelch open level for wide and narrow.
Continues squelch open adjustment for P25.
Adjusting squelch tight level for wide and narrow.
Adjusting RSSI reference for wide and narrow.
Continues RSSI reference adjustment for P25.
Adjusting RSSI for –120dBm across modes.
Adjusting RSSI for –70dBm across modes.
Continues RSSI adjustment for P25.
Procedures for verifying radio performance.
Verifying operational frequencies.
Measuring high transmit power.
Measuring low transmit power.
Steps to check receiver sensitivity.
Locations on PC boards for specific adjustments.
Pinout and function for TK-5810(BG) final unit.
Pinout and function for TK-5810H(BG) final unit.
Pinout and function for the control unit.
Pinouts for CN444, CN457, and CN459.
Pinouts for various connectors including TX-RX, ACC, KRK, and Display units.
Pinout and function for the TX-RX unit.
Pinout and function for the D-SUB connector.
Pinout and function for the 9-pin accessory connector.
Pinout and function for the 12-pin head accessory connector.
Component and foil side views of the TK-5810(BG) final unit.
Component and foil side views of the TK-5810(BG) final unit.
Component side view of the TK-5810H(BG) final unit.
Foil side view of the TK-5810H(BG) final unit.
Foil side view of the TK-5810H(BG) final unit.
Foil side view of the TK-5810H(BG) final unit.
Component side view of the Control Unit PC Board.
Component side view of the Control Unit PC Board.
Foil side view of the Control Unit PC Board.
Foil side view of the Control Unit PC Board.
Component side view of the TX-RX Unit PC Board.
Foil side view of the TX-RX Unit PC Board.
Foil side view of the TX-RX Unit PC Board.
Foil side view of the TX-RX Unit PC Board.
Circuit diagram for the final unit.
Continuation of the circuit diagram for the final unit.
Circuit diagram for the TK-5810H(BG) final unit.
Continuation of the circuit diagram for the TK-5810H(BG) final unit.
Circuit diagram for the control unit.
Continuation of the circuit diagram for the control unit.
Continuation of the circuit diagram for the control unit.
Continuation of the circuit diagram for the control unit.
Continuation of the circuit diagram for the control unit.
Continuation of the circuit diagram for the control unit.
Continuation of the circuit diagram for the control unit.
Continuation of the circuit diagram for the control unit.
Continuation of the circuit diagram for the control unit.
Continuation of the circuit diagram for the control unit.
Continuation of the circuit diagram for the control unit.
Circuit diagram for the TX-RX unit.
Continuation of the circuit diagram for the TX-RX unit.
Continuation of the circuit diagram for the TX-RX unit.
