Kenwood TS-130 Service Manual

The Kenwood TS-130 is a high-performance amateur radio transceiver covering multiple frequency bands with SSB, CW, and AM modes. This service manual provides comprehensive technical information for maintenance, repair, and adjustment procedures. Below are key sections covering specifications, block diagrams, alignment procedures, circuit descriptions, troubleshooting, and parts lists.

1. Technical Specifications 2. Block Diagrams 3. Alignment Procedures 4. Circuit Descriptions 5. Disassembly Instructions 6. Troubleshooting Guide 7. Parts List 8. Schematic Diagrams 9. PCB Layouts 10. Service Notes 11. Safety Precautions

Technical Specifications

Complete technical specifications for the Kenwood TS-130 transceiver system.

Parameter	Specification
Frequency Coverage	1.8-30 MHz (amateur bands)
Modes	SSB, CW, AM
Power Output	100W PEP (SSB), 100W (CW), 25W (AM)
Receiver Sensitivity	0.25μV for 10dB S+N/N
Selectivity	2.4kHz (-6dB), 4.4kHz (-60dB)
Power Supply	13.8V DC ±15%
Current Drain	Receive: 1.5A, Transmit: 20A max
Dimensions	280(W) × 95(H) × 260(D) mm
Weight	5.2 kg
Antenna Impedance	50Ω unbalanced

Block Diagrams

System block diagrams showing signal flow and major circuit sections.

Receiver Block Diagram: RF input to audio output signal path
Transmitter Block Diagram: Microphone input to RF output stages
PLL Synthesizer Block Diagram: Frequency generation system
Power Supply Block Diagram: Voltage regulation and distribution

NOTE: Refer to schematic diagrams for detailed component-level information.

Alignment Procedures

Step-by-step alignment procedures for optimal performance.

Receiver Alignment: RF stages, IF filters, and detector circuits
Transmitter Alignment: Driver and final amplifier stages
PLL Alignment: VCO and reference oscillator adjustments
Audio Alignment: Microphone and speaker circuits

WARNING! Use proper test equipment and follow safety procedures during alignment.

Circuit Descriptions

Receiver Section: RF amplifier, mixer, IF stages, product detector
Transmitter Section: Microphone amp, balanced modulator, driver, PA stages
PLL Synthesizer: Reference oscillator, VCO, phase comparator, loop filter
Control Circuits: Microprocessor control, display driver, interface logic
Power Supply: Voltage regulators, protection circuits, filtering
Audio Circuits: AF amplifier, sidetone generator, AGC system

Disassembly Instructions

Proper disassembly procedure for service access.

Remove top and bottom covers: Remove screws from all sides
Front panel removal: Disconnect control cables and ribbon connectors
Main board access: Remove mounting screws and support brackets
RF unit removal: Disconnect RF cables and mounting hardware

CAUTION! Document cable positions and handle boards with care to avoid damage.

Troubleshooting Guide

Systematic troubleshooting procedures for common problems.

Symptom	Possible Cause	Corrective Action
No power	Power supply, fuse, cables	Check fuse F1 (8A), verify 13.8V input, inspect power cable
No receive audio	Audio amp, speaker, detector	Check IC8 audio amplifier, verify speaker connection, test detector output
No transmit output	Driver stages, PA, relays	Verify driver transistors Q12-Q13, check final transistors Q14-Q15, test TR relay
Frequency instability	PLL, reference oscillator	Check reference crystal X1, verify VCO lock, test PLL IC voltages
Display problems	Display driver, connections	Check display connector CN3, verify IC15 display driver, test +5V supply

Parts List

Complete component listing with part numbers and descriptions.

Part Number	Description	Qty
X10-1230-01	Main PCB Assembly	1
X20-1450-10	Front Panel Assembly	1
2SC2879	Final Transistor	2
2SC2166	Driver Transistor	2
MA723	PLL IC	1
TA7136P	Audio IC	1
F0008	8A Fuse	1
R1234	VCO Coil	1

Schematic Diagrams

Detailed schematic diagrams for all circuit sections.

Main Receiver Schematic: Complete receiver circuit diagram
Transmitter Schematic: RF power amplifier and driver stages
Power Supply Schematic: Voltage regulation and distribution
Control Circuit Schematic: Microprocessor and interface circuits
PLL Schematic: Frequency synthesizer complete circuit

NOTE: Schematics show component values, test points, and voltage specifications.

PCB Layouts

Printed circuit board layouts and component placement diagrams.

Main Board: Component side and solder side views
RF Board: High-frequency circuit layout
Control Board: Front panel control layout
Power Supply Board: Regulator and filter component placement

Tip: Use layouts for component location and trace routing during repairs.

Service Notes

Important service notes and technical updates.

Service Bulletin TS130-001: Updated final transistor matching procedure
Service Bulletin TS130-002: Improved VCO stability modification
Service Bulletin TS130-003: Display contrast adjustment procedure update

WARNING! Always check for latest service bulletins before performing repairs.

Safety Precautions

Critical safety information for service personnel.

High voltage present in power supply section. RF power amplifier contains hazardous voltages when transmitting. Always disconnect power before servicing. Use grounded work surface and wrist strap for static-sensitive components. Follow lockout/tagout procedures when working on powered equipment.

CAUTION! Risk of electric shock. Only qualified technicians should perform service procedures.