KX-TPA65RU, KX-TPA65RUB - Panasonic Telephone Service Manual (repair manual). Page 2

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1 Safety Precautions -----------------------------------------------3

1.1. For Service Technicians  ---------------------------------3

2 Warning --------------------------------------------------------------3

2.1. About Lead Free Solder (PbF: Pb free) --------------3

2.1.1. Suggested PbF Solder -------------------------------4

2.2. Discarding of P. C. Board --------------------------------4

3 Specifications ------------------------------------------------------5
4 Technical Descriptions------------------------------------------6

4.1. DECT Description ------------------------------------------6

4.1.1. TDD Frame Format (Full Slot) ---------------------6
4.1.2. TDD Frame Format (Long Slot) for G.722

CODEC --------------------------------------------------6

4.1.3. TDMA system ------------------------------------------6

4.2. Block Diagram ----------------------------------------------7
4.3. Circuit Operations ------------------------------------------8

4.3.1. Outline----------------------------------------------------8
4.3.2. Power Supply Circuit / Reset Circuit--------------8
4.3.3. Reset Circuit and Start up of IC1 and IC2-------8
4.3.4. Clock Circuit ------------------------------------------ 10
4.3.5. Bus Access ------------------------------------------- 10
4.3.6. LCD Circuit -------------------------------------------- 11
4.3.7. LED Circuit -------------------------------------------- 11
4.3.8. Key Scan ---------------------------------------------- 12
4.3.9. RF Circuit ---------------------------------------------- 13

4.3.10. TX Audio Path---------------------------------------- 14

4.3.11. RX Audio Path --------------------------------------- 15

4.3.12. Audio path between IC1 and IC2---------------- 16

5 Location of Controls and Components------------------ 17

5.1. Name and Locations ------------------------------------ 17

6 Installation Instructions--------------------------------------- 19

6.1. Connections ----------------------------------------------- 19

7 Firmware Version up ------------------------------------------- 20

7.1. Serial Download ------------------------------------------ 20

7.1.1. Preparation-------------------------------------------- 20
7.1.2. How to "Serial Download" ------------------------- 20

7.2. Air Down load --------------------------------------------- 23

8 Troubleshooting Guide---------------------------------------- 24

8.1. Troubleshooting Flowchart----------------------------- 24
8.2. Power ON NG--------------------------------------------- 25
8.3. No Display ------------------------------------------------- 26
8.4. LED Trouble ----------------------------------------------- 26
8.5. KEY SCAN (No BEEP) --------------------------------- 27
8.6.  RF Trouble ------------------------------------------------ 27
8.7. Detector Trouble------------------------------------------ 28
8.8. Voice Reception Trouble ------------------------------- 28
8.9. Voice Transmission Trouble --------------------------- 29

8.10. Error Message -------------------------------------------- 30

8.10.1. Need Repair ------------------------------------------ 30
8.10.2. “ERROR 1”, “ERROR 2”--------------------------- 30

9 Disassembly and Assembly Instructions --------------- 31

9.1. Remove LED Board and Main Board --------------- 31
9.2. Remove LCD ---------------------------------------------- 33
9.3. Assembly for Lead wire--------------------------------- 34

10 Measurements and Adjustments -------------------------- 35

10.1. TEST MODE ---------------------------------------------- 35

10.1.1. Preparation-------------------------------------------- 35
10.1.2. How to execute Test command ------------------ 36
10.1.3. Commands -------------------------------------------- 36

10.2. How to "clock adjust" ----------------------------------- 36
10.3. How to "TX power mesurement"--------------------- 37

11 Maintenance------------------------------------------------------ 38

11.1. Terminal Guide of the ICs Transistors and

Diodes ------------------------------------------------------ 38

11.2. How To Replace a Flat Package IC ----------------- 39

11.2.1. Preparation ------------------------------------------- 39
11.2.2. Removal Procedure -------------------------------- 39
11.2.3. Procedure--------------------------------------------- 39
11.2.4. Removing Solder From Between Pins--------- 39

12 Schematic Diagram -------------------------------------------- 40

12.1. Main -------------------------------------------------------- 40

13 Printed Circuit Board------------------------------------------ 41

13.1. Main Board ------------------------------------------------ 41

13.1.1. Component View ------------------------------------ 41
13.1.2. Bottom View ------------------------------------------ 42

14 Appendix Information of Schematic Diagram -------- 43
15 Exploded View and Replacement Parts List----------- 44

15.1. IC Data ----------------------------------------------------- 44

15.1.1. IC1 (Main CPU) ------------------------------------- 44
15.1.2. IC201 (Sub CPU) ----------------------------------- 46

15.2. Cabinet and Electric Parts----------------------------- 48
15.3. Accessories and Packing Materials ----------------- 49
15.4. Replacement Parts List -------------------------------- 50

15.4.1. Cabinet and Electrical Parts---------------------- 50
15.4.2. Accessories and Packing Materials ------------ 50
15.4.3. Main Board Parts ----------------------------------- 51