KX-NS0180X - Panasonic PBX Service Manual (repair manual). Page 2

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2
KX-NS0180X
TABLE OF CONTENTS
PAGE
PAGE
1 Safety Precautions -----------------------------------------------3
1.1. For Service Technicians  ---------------------------------3
2 Warning --------------------------------------------------------------4
2.1. About Lead Free Solder (PbF: Pb free) --------------4
2.1.1. Suggested PbF Solder -------------------------------5
2.2. Discarding of P. C. Board --------------------------------5
3 Specifications ------------------------------------------------------6
4 Technical Descriptions------------------------------------------7
4.1. Block Diagram ----------------------------------------------7
4.2. Circuit Operation -------------------------------------------8
4.2.1. Description of Control System Circuits-----------8
4.2.2. Description of Functions and
Circuits(LCOT) -----------------------------------------9
4.2.3. Description of Functions and Circuits
(SLC) --------------------------------------------------- 15
4.2.4. Power Supply Voltage Generator --------------- 20
5 Location of Controls and Components------------------ 22
5.1. Names and Locations----------------------------------- 22
6 Installation Instructions--------------------------------------- 23
6.1. Physical Trunk and Extension Cards---------------- 23
6.1.1. SLC2/LCOT2 Card  --------------------------------- 23
7 Troubleshooting Guide---------------------------------------- 24
7.1. Power Supply Part --------------------------------------- 24
7.2. LCOT part -------------------------------------------------- 26
7.3. SLC part ---------------------------------------------------- 30
8 Miscellaneous ---------------------------------------------------- 34
8.1. How To Replace a Flat Package IC ----------------- 34
8.1.1. Preparation-------------------------------------------- 34
8.1.2. Removal Procedure--------------------------------- 34
8.1.3. Procedure --------------------------------------------- 34
8.1.4. Removing Solder From Between Pins --------- 34
8.2. Terminal Guide of the ICs Transistors and
Diodes------------------------------------------------------- 35
9 Schematic Diagram--------------------------------------------- 36
9.1. Main Board------------------------------------------------- 36
9.1.1. No.1----------------------------------------------------- 36
9.1.2. No.2----------------------------------------------------- 40
9.1.3. No.3----------------------------------------------------- 42
9.2. Waveform -------------------------------------------------- 44
9.2.1. LCOT Block ------------------------------------------- 44
9.2.2. SLT Block---------------------------------------------- 47
10 Printed Circuit Board ------------------------------------------ 50
10.1. Main Board------------------------------------------------- 50
10.1.1. Component View ------------------------------------ 50
10.1.2. Bottom View ------------------------------------------ 51
11 Appendix Information of Schematic Diagram --------- 52
12 Exploded View and Replacement Parts List ----------- 53
12.1. IC Data------------------------------------------------------ 53
12.1.1. IC203 (CODEC) ------------------------------------- 53
12.1.2. IC204 (Caller ID ASIC)----------------------------- 54
12.2. Cabinet and Electrical Parts --------------------------- 56
12.3. Accessories and Packing Material------------------- 57
12.4. Replacement Parts List --------------------------------- 58
12.4.1. Cabinet and Electrical Parts ---------------------- 58
12.4.2. Accessories and Packing Materials------------- 58
12.4.3. Main Board Parts ------------------------------------ 58
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