Panasonic KX-TG6441T - Cordless Phone - Metallic, Service Manual

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KX-TG6441T/KX-TG6442T/KX-TG6443T/KX-TG6444T/KX-TG6445T/KX-TGA641T
TABLE OF CONTENTS
PAGE PAGE
1 Safety Precautions ----------------------------------------------- 4
1.1. For Service Technicians --------------------------------- 4
2 Warning -------------------------------------------------------------- 4
2.1. Battery Caution--------------------------------------------- 4
2.2. About Lead Free Solder (PbF: Pb free)-------------- 4
2.3. Discarding of P. C. Board-------------------------------- 5
3 Specifications ----------------------------------------------------- 6
4 Technical Descriptions ----------------------------------------- 7
4.1. US-DECT Description ------------------------------------ 7
4.2. Block Diagram (Base Unit_Main)---------------------- 9
4.3. Block Diagram (Base Unit_RF Part) -----------------10
4.4. Circuit Operation (Base Unit) -------------------------- 11
4.5. Block Diagram (Handset)-------------------------------20
4.6. Block Diagram (Handset_RF Part)-------------------21
4.7. Circuit Operation (Handset)----------------------------22
4.8. Circuit Operation (RF Part)-----------------------------26
4.9. Circuit Operation (Charger Unit) ----------------------27
4.10. Signal Route -----------------------------------------------28
5 Location of Controls and Components ------------------ 30
5.1. Controls -----------------------------------------------------30
5.2. Display ------------------------------------------------------31
6 Installation Instructions --------------------------------------- 32
6.1. Connections------------------------------------------------32
6.2. Battery-------------------------------------------------------32
7 Operating Instructions ----------------------------------------- 34
7.1. Programmable Settings ---------------------------------34
7.2. Error Messages -------------------------------------------38
7.3. Troubleshooting-------------------------------------------39
8 Test Mode ---------------------------------------------------------- 43
8.1. Adjustment and Test Mode Flow Chart -------------43
9 Service Mode ----------------------------------------------------- 50
9.1. How to Clear User Setting------------------------------50
10 Troubleshooting Guide ---------------------------------------- 52
10.1. Troubleshooting Flowchart -----------------------------52
11 Disassembly and Assembly Instructions --------------- 65
11.1. Disassembly Instructions -------------------------------65
11.2. How to Replace the Handset LCD -------------------69
12 Measurements and Adjustments --------------------------- 70
12.1. Things to Do after Replacing IC or X’tal ------------70
12.2. Base Unit Reference Drawing-------------------------71
12.3. Handset Reference Drawing---------------------------72
12.4. Frequency Table ------------------------------------------73
13 Miscellaneous ---------------------------------------------------- 74
13.1. CPU Data (Base Unit) -----------------------------------74
13.2. CPU Data (Handset)-------------------------------------75
13.3. Explanation of IC Terminals (RF Part)---------------76
13.4. How to Replace the Flat Package IC ----------------77
13.5. How to Replace the LLP (Leadless Leadframe
Package) IC------------------------------------------------79
13.6. Terminal Guide of the ICs, Transistors and
Diodes -------------------------------------------------------82
14 Schematic Diagram --------------------------------------------- 83
14.1. For Schematic Diagram---------------------------------83
14.2. Schematic Diagram (Base Unit_Main) --------------84
14.3. Schematic Diagram (Base Unit_RF Part) ----------86
14.4. Schematic Diagram (Base Unit_Operation) -------88
14.5. Schematic Diagram (Handset_Main) ----------------90
14.6. Schematic Diagram (Handset_RF Part) ------------92
14.7. Schematic Diagram (Charger Unit) ----------------- 94
15 Printed Circuit Board ------------------------------------------ 95
15.1. Circuit Board (Base Unit_Main) ---------------------- 95
15.2. Circuit Board (Base Unit_RF Part)------------------- 97
15.3. Circuit Board (Base Unit_Operation)---------------- 98
15.4. Circuit Board (Handset_Main) ------------------------ 99
15.5. Circuit Board (Handset_RF Part) ------------------ 101
15.6. Circuit Board (Charger Unit)------------------------- 102
16 Exploded View and Replacement Parts List --------- 103
16.1. Cabinet and Electrical Parts (Base Unit) --------- 103
16.2. Cabinet and Electrical Parts (Handset)----------- 104
16.3. Cabinet and Electrical Parts (Charger Unit) ----- 105
16.4. Accessories and Packing Materials --------------- 106
16.5. Replacement Parts List--------------------------------112