Panasonic KX-TD7685 - Wireless Digital Phone, Service Manual

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KX-TD7685
TABLE OF CONTENTS
PAGE PAGE
1 Safety Precautions ----------------------------------------------- 3
1.1. For Service Technicians ----------------------------------3
1.2. Caution--------------------------------------------------------3
1.3. Battery Caution ---------------------------------------------3
2 Warning -------------------------------------------------------------- 3
2.1. About Lead Free Solder (PbF: Pb free) --------------3
3 Specifications ------------------------------------------------------ 4
4 Technical Descriptions ------------------------------------------ 5
4.1. Block Diagram (Handset) --------------------------------5
4.2. Circuit Operation (Handset) -----------------------------6
5 Location of Controls and Components ------------------ 11
5.1. Handset----------------------------------------------------- 11
6 Installation Instructions --------------------------------------- 13
6.1. Connection and Setting--------------------------------- 13
6.2. Battery ------------------------------------------------------ 13
7 Test Mode ---------------------------------------------------------- 15
7.1. Required Equipment------------------------------------- 15
7.2. Initial Setting----------------------------------------------- 15
7.3. Command Reference ----------------------------------- 16
8 Service Mode ----------------------------------------------------- 24
8.1. Software Upload ----------------------------------------- 24
9 Troubleshooting Guide ---------------------------------------- 29
9.1. Power Trouble (Handset) ------------------------------ 29
9.2. Battery Charge Trouble (Handset)------------------- 30
9.3. LED Trouble (Handset) --------------------------------- 32
9.4. Vibrator Trouble (Handset) ---------------------------- 33
9.5. Ringer Trouble (Handset) ------------------------------ 33
9.6. Key Click Sound Trouble (Handset) ----------------- 34
9.7. No Link Trouble ------------------------------------------ 35
9.8. No Voice Transmission --------------------------------- 36
9.9. No Voice Reception-------------------------------------- 37
9.10. Password Trouble---------------------------------------- 38
9.11. Things to Do After Replacing Main Board /
BBIC--------------------------------------------------------- 39
10 Disassembly and Assembly Instructions -------------- 40
10.1. Handset ---------------------------------------------------- 40
10.2. Charger----------------------------------------------------- 42
11 Measurements and Adjustments -------------------------- 43
11.1. Adjustment for Main Part (Handset) ---------------- 43
11.2. Adjustment for RF Part (Handset)------------------- 46
11.3. Frequency Table ----------------------------------------- 54
12 Miscellaneous --------------------------------------------------- 55
12.1. Terminal Guide of ICs, Transistors and diodes--- 55
12.2. How To Replace a Flat Package IC----------------- 56
13 Schematic Diagram -------------------------------------------- 58
13.1. Handset ---------------------------------------------------- 58
13.2. Charger----------------------------------------------------- 62
14 Printed Circuit Board ------------------------------------------ 63
14.1. Handset(Main)-------------------------------------------- 63
14.2. Charger Board-------------------------------------------- 64
15 Appendix Information of Schematic Diagram -------- 65
16 Exploded View and Replacement Parts List ----------- 66
16.1. CPU Data -------------------------------------------------- 66
16.2. Cabinet and Electrical Parts Location -------------- 69
16.3. Accessories and Packing Materials----------------- 71
16.4. Replacement Parts List -------------------------------- 72