Panasonic KX-TG1233BXT

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28 TERMINAL GUIDE OF THE ICs, TRANSISTORS AND

DIODES

28.1. Base Unit

28.2. Handset

KX-TG1233BXS / KX-TG1233BXT / KX-TCA122CXS / KX-TCA122CXT / KX-TCA121CXS / KX-TCA121CXT

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Table of Contents2
ABOUT LEAD FREE SOLDER (Pbf: Pb Free)4
Suggested Pbf Solder4
How to Recognize that Pb Free Solder Is Used5
For Service Technicians5
Caution5
Operating Instructions6
Battery6
Location of Controls8
Connections9
Guide to Settings10
Registering a Handset to a Base Unit12
Copying Phonebook Entries13
For Service Hint13
Disassembly Instructions14
Base Unit14
Handset15
Charger Unit16
How to Replace the Handset Lcd17
Troubleshooting Flowchart18
Check Power19
Check Battery Charge20
Check Link21
Check Handset Transmission25
Check Handset Reception25
Check Caller ID25
Check Base Speakerphone Transmission25
Check Base Speakerphone Reception25
Bell Reception26
Check TAM Operation26
Troubleshooting by Symptom (Base Unit and Charger Unit)27
Check Point (Base Unit)27
The Setting Method of JIG (Base Unit)32
Adjustment Standard (Base Unit)35
Check Point (Charger Unit)35
Adjustment Standard (Charger Unit)35
Troubleshooting by Symptom (Handset)36
Check Point (Handset)36
Troubleshooting for Speakerphone (Handset)39
The Setting Method of JIG (Handset)40
Adjustment Standard (Handset)42
Things to Do after Replacing IC43
Base Unit43
Handset43
Rf Specification44
Base Unit44
Handset44
How to Check the Speaker or Receiver45
FREQUENCY TABLE (Mhz)45
Block Diagram (Base Unit)47
Circuit Operation (Base Unit)47
Outline47
Power Supply Circuit48
Telephone Line Interface49
Transmitter/Receiver49
Pulse Dialling49
Block Diagram (Handset)50
Circuit Operation (Handset)51
Outline51
Power Supply Circuit/Reset Circuit51
Charge Circuit51
Battery Low/Power down Detector51
Speakerphone51
Circuit Operation (Charger Unit)52
Power Supply Circuit52
Signal Route53
Cpu Data (Base Unit)55
Ic4 (Bbic)55
Cpu Data (Handset)58
Ic1 (Bbic)58
Engineering Mode60
Base Unit60
Handset63
Copying Phonebook Items When Repairing66
How to Clear User Setting68
How to Replace the Flat Package IC69
Preparation69
How to Remove the IC69
How to Install the IC70
How to Remove a Solder Bridge70
Cabinet and Electrical Parts (Base Unit)71
Cabinet and Electrical Parts (Handset)72
Cabinet and Electrical Parts (Charger Unit)73
Accessories and Packing Materials74
Kx-Tg1233Bxs/Bxt74
Kx-Tca121Cxs/Cxt75
TERMINAL GUIDE of the Ics, TRANSISTORS and DIODES76
Base Unit76
Handset76
Charger Unit77
Replacement Parts List78
Base Unit78
Handset81
Charger Unit82
Accessories and Packing Materials83
Fixtures and Tools83
For Schematic Diagram85
Base Unit (SCHEMATIC DIAGRAM (BASE UNIT_MAIN))85
Handset (SCHEMATIC DIAGRAM (HANDSET))85
Charger Unit (SCHEMATIC DIAGRAM (CHARGER UNIT))85
Schematic Diagram (Base Unit_Main)86
Schematic Diagram (Handset)90
Schematic Diagram (Charger Unit)92
Circuit Board (Base Unit_Main)99
Component View99
Flow Solder Side View99
Circuit Board (Base Unit_Operation)99
Circuit Board (Charger Unit)99

Table of Contents

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