Table Of Contents - Kenwood TKR-750 Service Manual

Table of Contents

Front Panel View1
Rear Panel View1
Table Of Contents1
General/System Set-Up2
Personal Safety2
Operating Features3
Two 7-Segment Led Displays3
Realignment4
Modes4
Pc Mode4
Firmware Programming Mode4
Installation5
External Power Supply Connection (Rear Connectors)5
Voice Scrambler5
Programming5
External Speaker (Kes-4 Or Kes-5)6
Extracting Tool6
Removing The Jumper Lead6
Accessory Cabinet7
Modification8
Dc Source Switch8
Desktop Repeater8
Installing Name Plates8
Trickle Charge For Backup Battery9
Single Antenna9
Disassembly For Repair10
How To Remove The Panel Assy (Abs)10
Circuit Description11
Receiver Circuit11
Front-End Circuit11
First Mixer11
Transmitter Circuit12
Microphone Circuit12
Modulation Level Adjustment Circuit12
Squelch Circuit12
Driver And Final Power Amplifier Circuit13
Automatic Power Control Circuit And Transmitter13
Rf Power Down Detect13
Fan Action Control Circuit13
Pll Frequency Synthesizer14
Receiver Pll14
Transmitter Pll14
Unlock Detector Circuit14
Control Circuit15
Cpu15
Memory Circuit15
Display Circuit15
Dsp16
Base-Band Circuit16
Rs-232C Circuit16
Power Supply Circuit16
Dc Power Supply Circuit17
Dc Source Switching Relay Circuit17
Sb Switching Relay Circuit17
5-Tone Decode17
Semiconductor Data18
Main Cpu : 30622M4A-487Gp (Tx-Rx Unit Ic604)18
Pin Function18
Dsp : 320Vc5402Pge (Tx-Rx Unit Ic618)19
Components Description20
Final Unit (X45-373X-Xx)20
Display Unit (X54-3330-21)20
Tx-Rx Unit (X57-695X-Xx)20
Rx Vco Unit (X58-4780-10)21
Tx Vco Unit (X58-4790-10)21
Parts List22
Capacitors22
Chip Capacitors22
Resistors22
Tkr-750 Parts List23
Final Unit (X45-373X-XX) Parts List23
Display Unit (X54-3330-21) Parts List25
Tx-Rx Unit (X57-695X-Xx) Parts List25
Rx Vco Unit (X58-4780-10) Parts List31
Tx Vco Unit (X58-4790-10) Parts List32
Exploded View34
Packing36
Adjustment37
Test Equipment Required For Alignment37
Flat Cable (36-Pin) About 256Mm37
Test Cable For Microphone Input37
Test Channel (Default)38
Test Signaling38
Adjustment Points38
Fine-Tuning The Tkr-75039
Adjustment Procedure At The Frequency Of The Channel To Be Used39
Alignment Table39
Confirmation And Alignment Of Set-Up To Prevent Receiver Desensitization45
Confirmation Of Duplexer Alignment45
Confirmation Of Repeater Desensitization45
Terminal Function46
Final Unit (X45-373X-Xx) Terminal Function46
Display Unit (X54-3330-21) (A/2) Terminal Function46
Tx-Rx Unit (X57-695X-Xx) (A/2): Tx-Rx Section Terminal Function46
Tx-Rx Unit (X57-695X-Xx) (B/2): Control Section Terminal Function47
Rx Vco Unit (X58-4780-10) Terminal Function48
Tx Vco Unit (X58-4790-10) Terminal Function48
Acc 25 Pin D-Sub Connector Terminal Function49
Acc 15 Pin Connector Terminal Function49
Interconnection Diagram50
Tx-Rx Unit (X57-695X-Xx) (A/2)50
Pc Board53
Final Unit (X45-373X-Xx) Pc Board Component Side View53
Pc Board Final Unit (X45-373X-Xx)54
Final Unit (X45-373X-Xx) Pc Board Foil Side View (J72-0910-19)56
Display Unit (X54-3330-21) Pc Board Component Side View (J72-0756-12)59
Display Unit (X54-3330-21) Pc Board Foil Side View (J72-0756-12)62
Tx-Rx Unit (X57-695X-Xx) (A/2) Pc Board Component Side View (J72-0923-19 A/2)65
Tx-Rx Unit (X57-695X-Xx) (A/2) Pc Board Foil Side View (J72-0923-19 A/2)68
Tx-Rx Unit (X57-695X-Xx) (B/2) Pc Board Component Side View (J72-0923-19 B/2)71
Tx-Rx Unit (X57-695X-Xx) (B/2) Pc Board Foil Side View (J72-0923-19 B/2)74
Rx Vco Unit (X58-4780-10) Pc Board77
Tx Vco Unit (X58-4790-10) Pc Board View78
Schematic Diagram - Final Unit (X45-3730-Xx) (A/2)79
Schematic Diagram - Display Unit (X54-3330-21) (A/2)82
Schematic Diagram - Tx-Rx Unit (X57-695X-Xx) (A/2)85
Schematic Diagram - Tx-Rx Unit (X57-695X-Xx) (B/2)90
Block Diagram96
Using An External Speaker99
Kes-5 (External Speaker)99
Specifications99
Specifications (K, K2 Type)100
Specifications (E Type)101