KX-TDA6382X, KX-TDA6382SX - Panasonic PBX 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. Battery Caution ---------------------------------------------3
2.2. Caution--------------------------------------------------------3
2.3. About Lead Free Solder (PbF: Pb free) --------------3

2.3.1. Suggested PbF Solder -------------------------------4

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

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

4.1. Block Diagram ----------------------------------------------6

4.1.1. Block Diagram of Main Board ----------------------6
4.1.2. Block Diagram of Sub Board -----------------------7

4.2. Circuit Operations ------------------------------------------8

4.2.1. Description of Control System Circuits  ----------8
4.2.2. Description of Functions and Circuits ---------- 11
4.2.3. Power Supply Circuit ------------------------------- 18

5 Location of Controls and Components------------------ 20

5.1. Name and Locations ------------------------------------ 20
5.2. Instlling/Removing the Optional Service Cards--- 21

6 Troubleshooting Guide---------------------------------------- 27

6.1. In Case of  the Main Board is Defective ------------ 27
6.2. In Case of  the Sub Board is Defective ------------- 33

7 Miscellaneous ---------------------------------------------------- 38

7.1. How To Replace a Flat Package IC ----------------- 38

7.1.1. Preparation-------------------------------------------- 38
7.1.2. Removal Procedure--------------------------------- 38
7.1.3. Procedure --------------------------------------------- 38
7.1.4. Removing Solder From Between Pins --------- 38

7.2. Terminal Guide of the ICs, Transistors and

Diodes------------------------------------------------------- 39

7.2.1. Main Board-------------------------------------------- 39
7.2.2. Sub Board --------------------------------------------- 40
7.2.3. Memo --------------------------------------------------- 41

8 Schematic Diagram--------------------------------------------- 42

8.1. Main Board------------------------------------------------- 42

8.1.1. No.1 ----------------------------------------------------- 42
8.1.2. No.2 ----------------------------------------------------- 44
8.1.3. No.3 ----------------------------------------------------- 46
8.1.4. No.4 ----------------------------------------------------- 48

8.2. Sub Board-------------------------------------------------- 50

8.2.1. No.1 ----------------------------------------------------- 50
8.2.2. No.2 ----------------------------------------------------- 52

8.3. Waveform -------------------------------------------------- 54

8.3.1. Main Board-------------------------------------------- 54
8.3.2. Sub Board --------------------------------------------- 57

9 Printed Circuit Board ------------------------------------------ 59

9.1. Main Board------------------------------------------------- 59

9.1.1. Component View ------------------------------------ 59
9.1.2. Bottom View ------------------------------------------ 60

9.2. Sub Board-------------------------------------------------- 61

9.2.1. Component View ------------------------------------ 61
9.2.2. Bottom View ------------------------------------------ 62

10 Appendix Information of Schematic Diagram --------- 63

11 Exploded View and Replacement Parts List ----------- 64

11.1. IC Data------------------------------------------------------ 64

11.1.1. IC3 (ASIC)--------------------------------------------- 64
11.1.2. IC401(CPU)  I/O Port------------------------------- 66

11.1.3. IC6, IC7 of Main Board and  IC6, IC7 of

Sub Board(CODEC)-------------------------------- 67

11.1.4. IC308, IC409 of Main Board and  IC508,

IC609 of Sub Board(Caller ID ASIC)----------- 68

11.2. Cabinet and Electrical Parts Location -------------- 71
11.3. Accessories and Packing Materials ----------------- 72
11.4. Peplacement Part List ---------------------------------- 73

11.4.1. Cabinet and Electrical Parts  --------------------- 73
11.4.2. Accessories and Packing Materials ------------ 73
11.4.3. Main Board Parts ----------------------------------- 73
11.4.4. Sub Board Parts------------------------------------- 80