Panasonic KX-TCD300FXS

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23 CIRCUIT OPERATION (CHARGER UNIT)

23.1. Power Supply Circuit

The power supply is as shown.

74

KX-TCD300FXS / KX-TCD300FXT / KX-TCA130FXS / KX-TCA130FXT

Table of Contents

Default Chapter2
- Table of Contents2
1 ABOUT LEAD FREE SOLDER (Pbf: Pb Free)4
- Suggested Pbf Solder4
- How to Recognize that Pb Free Solder Is Used5
2 For Service Technicians7
3 Caution7
4 Battery8
- Battery Installation8
- Battery Charge8
- Battery Life9
- Battery Replacement9
5 Location of Controls10
- Base Unit10
- Handset10
6 Settings12
- Connections12
- Guide to Settings14
- Ringer Volume15
- Night Mode16
- PIN Code17
- Reset18
- Key Lock20
- R] Button ( to Use the Recall Feature)20
- Pause Button for Pbx/Long Distance Service Users20
- Setting Call Restriction21
- Turning Call BAR On/Off (Call Prohibition)21
- Changing the Display Language22
- Setting Dialling Mode (Tone/Pulse)22
- Changing the Recall Time22
7 Display23
- Display Icons23
- Menu Icons23
- Caller ID Display23
- Screen Saver Mode24
8 Operations25
- Turning the Power On/Off25
- Setting the Date and Time25
- Redialling25
- Phonebook26
- Registering a Handset to a Base Unit30
- Selecting a Base Unit31
9 SMS (Short Message Service)32
- Writing and Sending a New Message32
- Available Character Entries for SMS33
- Sending a Saved Message34
- Editing and Sending a Saved Message34
- Erasing Saved Messages34
- Receiving a Message35
- Reading a Received Message35
- Replying to a Message35
- Erasing Received Messages35
- Changing SMS Message Centre Numbers36
- Turning SMS On/Off36
10 Troubleshooting37
11 Disassembly Instructions40
- Base Unit40
- Handset41
- Charger Unit42
12 Troubleshooting Flowchart43
- Check Power44
- Check Battery Charge45
- Check Link46
- Check Handset Transmission50
- Check Handset Reception50
- Check Caller ID50
- Bell Reception51
13 Troubleshooting by Symptom (Base Unit and Charger Unit)52
- Check Point (Base Unit)52
- The Setting Method of JIG (Base Unit)56
- Adjustment Standard (Base Unit)57
- Check Point (Charger Unit)58
- Adjustment Standard (Charger Unit)58
14 Troubleshooting by Symptom (Handset)59
- Check Point (Handset)59
- Troubleshooting for Speakerphone62
- The Setting Method of JIG (Handset)63
- Adjustment Standard (Handset)64
15 Things to Do after Replacing IC65
- Base Unit65
- Handset65
16 Rf Specification66
- Base Unit66
- Handset66
17 How to Check the Handset Speaker or Receiver67
18 FREQUENCY TABLE (Mhz)67
19 Block Diagram (Base Unit)68
20 Circuit Operation (Base Unit)69
- Outline69
- Power Supply Circuit70
- Telephone Line Interface71
- Transmitter/Receiver71
- Pulse Dialing71
21 Block Diagram (Handset)72
22 Circuit Operation (Handset)73
- Outline73
- Power Supply Circuit/Reset Circuit73
- Charge Circuit73
- Battery Low/Power down Detector73
- Speakerphone73
23 Circuit Operation (Charger Unit)74
- Power Supply Circuit74
24 Signal Route75
25 Cpu Data (Base Unit)76
- Ic8 (Bbic)76
26 Cpu Data (Handset)78
- Ic1 (Bbic)78
27 Engineering Mode80
- Base Unit80
- Handset83
28 Eeprom Layout (Base Unit)85
- Scope85
- Introduction85
- EEPROM Layout85
29 Eeprom Layout (Handset)90
- Scope90
- Introduction90
- EEPROM Contents90
30 How to Replace Flat Package IC93
- Preparation93
- Procedure93
- Modification Procedure of Bridge93
31 Cabinet and Electrical Parts Location (Base Unit)94
32 Cabinet and Electrical Parts Location (Handset)95
33 Cabinet and Electrical Parts Location95
- Cabinet and Electrical Parts Location (Charger Unit)96
34 Accessories and Packing Materials97
- Kx-Tcd300Fxs/Fxt97
- Kx-Tca130Fxs/Fxt98
35 TERMINAL GUIDE of the Ics, TRANSISTORS and DIODES99
- Base Unit99
- Handset99
- Charger Unit99
36 Replacement Parts List100
- Base Unit100
- Handset102
- Charger Unit103
- Accessories and Packing Materials103
- Fixtures and Tools104
37 For Schematic Diagram105
- Base Unit (SCHEMATIC DIAGRAM (BASE UNIT))105
- Handset (SCHEMATIC DIAGRAM (HANDSET))105
- Charger Unit (SCHEMATIC DIAGRAM (CHARGER UNIT))105
38 Schematic Diagram (Base Unit)106
39 Schematic Diagram (Handset)108
40 Schematic Diagram (Charger Unit)110
41 Circuit Board (Base Unit)111
- Component View111
- Flow Solder Side View112
42 Circuit Board (Handset)113
- Flow Solder Side View114
43 Circuit Board (Charger Unit)115

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