Panasonic KX-TGA410B, Service Manual

Page: 3 / 98

3
KX-TG7622B/KX-TG7623B/KX-TGA410B
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. Circuit Configuration of TG762x Series
Phones ------------------------------------------------------- 7
4.2. US-DECT Description ------------------------------------ 8
4.3. Block Diagram (Base Unit_Main)---------------------10
4.4. Tel Interface Circuit---------------------------------------11
4.5. Block Diagram (Base Unit_RF Part) -----------------12
4.6. Circuit Operation (Base Unit)--------------------------13
4.7. Block Diagram (Handset)-------------------------------20
4.8. Block Diagram (Handset_RF Part)-------------------21
4.9. Circuit Operation (Handset)----------------------------22
4.10. Circuit Operation (Charger Unit) ----------------------24
4.11. Signal Route -----------------------------------------------25
5 Location of Controls and Components ------------------ 27
6 Installation Instructions --------------------------------------- 27
7 Operating Instructions ----------------------------------------- 27
8 Test Mode ---------------------------------------------------------- 28
8.1. Engineering Mode ----------------------------------------28
9 Service Mode ----------------------------------------------------- 32
9.1. How to Clear User Setting (Handset Only)---------32
10 Troubleshooting Guide ---------------------------------------- 33
10.1. Troubleshooting Flowchart -----------------------------33
11 Disassembly and Assembly Instructions --------------- 49
11.1. Disassembly Instructions -------------------------------49
11.2. How to Replace the Base Unit LCD -----------------53
11.3. How to Replace the Handset LCD -------------------54
12 Measurements and Adjustments --------------------------- 56
12.1. Equipment Required -------------------------------------56
12.2. The Setting Method of JIG -----------------------------56
12.3. Adjustment Standard (Base Unit)---------------------60
12.4. Adjustment Standard (Charger Unit)-----------------61
12.5. Adjustment Standard (Handset) ----------------------62
12.6. Things to Do after Replacing IC or X'tal ------------63
12.7. Frequency Table ------------------------------------------65
12.8. Bluetooth Frequency Table-----------------------------66
13 Miscellaneous ---------------------------------------------------- 67
13.1. How to Replace the LLP (Leadless Leadframe
Package) IC------------------------------------------------67
13.2. How to Replace the Flat Package IC ----------------69
13.3. Terminal Guide of the ICs, Transistors and
Diodes -------------------------------------------------------71
14 Schematic Diagram --------------------------------------------- 72
14.1. For Schematic Diagram---------------------------------72
14.2. Schematic Diagram (Base Unit_Main) --------------74
14.3. Schematic Diagram (Base Unit_RF)-----------------76
14.4. Schematic Diagram (Base Unit_Operation) -------77
14.5. Schematic Diagram (Handset_Main) ----------------78
14.6. Schematic Diagram (Charger Unit) -----------------80
15 Printed Circuit Board ------------------------------------------- 81
15.1. Circuit Board (Base Unit_Main)-----------------------81
15.2. Circuit Board (Base Unit_Operation) ----------------83
15.3. Circuit Board (Handset_Main) ------------------------ 85
15.4. Circuit Board (Charger Unit)--------------------------- 87
16 Exploded View and Replacement Parts List ----------- 88
16.1. Cabinet and Electrical Parts (Base Unit) ----------- 88
16.2. Cabinet and Electrical Parts (Handset)------------- 89
16.3. Cabinet and Electrical Parts (Charger Unit) ------- 90
16.4. Accessories and Packing Materials ----------------- 91
16.5. Replacement Parts List--------------------------------- 94