KX-TDA1186X (serv.man2) - 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
4.2. Circuit Operations ------------------------------------------7

4.2.1. Description of Control System Circuits ----------7

4.3. Description of Functions and Circuits -----------------8

4.3.1. Dial Pulse Signal Transmission --------------------8
4.3.2. Circuit For Line Acquisition -------------------------8
4.3.3. DTMF Signal Transmission -------------------------9
4.3.4. Bell Signal Detection ---------------------------------9
4.3.5. End-Call Signal Detection ------------------------- 10
4.3.6. Polarity Reversal Detection ----------------------- 10
4.3.7. 2W-4W Conversion --------------------------------- 11
4.3.8. CODEC Interface------------------------------------ 11
4.3.9. CODEC Function  ----------------------------------- 12

4.3.10. Surge Protection------------------------------------- 12

4.3.11. Option Cards ----------------------------------------- 13

4.3.12. Noise Rejection -------------------------------------- 14

4.4. Power Supply --------------------------------------------- 14

5 Installation Instructions--------------------------------------- 15

5.1. Instlling/Removing the Optional Service Cards--- 15

5.1.1. Installation of KX-TDA1186X ( CLCOT8E

Card )--------------------------------------------------- 15

6 Troubleshooting Guide---------------------------------------- 16
7 Miscellaneous ---------------------------------------------------- 21

7.1. How To Replace a Flat Package IC ----------------- 21

7.1.1. Preparation-------------------------------------------- 21
7.1.2. Removal Procedure--------------------------------- 21
7.1.3. Procedure --------------------------------------------- 21
7.1.4. Removing Solder From Between Pins --------- 21

7.2. How to Replace the LLP (Leadless Leadframe

Package) IC and IC ground plate -------------------- 22

7.2.1. Preparation-------------------------------------------- 22
7.2.2. Caution------------------------------------------------- 22
7.2.3. How to Remove the IC ----------------------------- 22
7.2.4. How to Install the IC -------------------------------- 22
7.2.5. How to Remove a Solder Bridge (Doesn't

apply to IC ground plate.) ------------------------- 23

7.3. Terminal Guide of the ICs, Transistors and

Diodes------------------------------------------------------- 24

7.4. Memo-------------------------------------------------------- 25

8 Schematic Diagram--------------------------------------------- 26

8.1. No.1---------------------------------------------------------- 26
8.2. No.2---------------------------------------------------------- 28
8.3. Waveform -------------------------------------------------- 30

9 Printed Circuit Board ------------------------------------------ 32

9.1. Component View ----------------------------------------- 32
9.2. Bottom View ----------------------------------------------- 33

10 Appendix Information of Schematic Diagram -------- 34

11 Exploded View and Replacement Parts List----------- 35

11.1. IC Data ----------------------------------------------------- 35
11.2. IC6 (CODEC) --------------------------------------------- 35
11.3. IC7 (CODEC) --------------------------------------------- 36
11.4. IC508, IC609 (Caller ID ASIC) ----------------------- 37
11.5. Cabinet and Electrical Parts Location -------------- 40
11.6. Accessories and Packing Materials----------------- 41
11.7. Peplacement Part List ---------------------------------- 42

11.7.1. Cabinet and Electrical Parts --------------------- 42
11.7.2. Accessories and Packing Materials ------------ 42
11.7.3. Main Board Parts ----------------------------------- 42