KX-NCP1172XJ - Panasonic PBX Service Manual (repair manual). Page 2

2

PAGE

PAGE

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 -------------------------------3

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

3 Specifications ------------------------------------------------------5
4 General/Introduction ---------------------------------------------5

4.1. General Description ---------------------------------------5

5 Technical Descriptions------------------------------------------6

5.1. Block Diagram ----------------------------------------------6
5.2. Circuit Operation -------------------------------------------7

5.2.1. Control-System Circuit -------------------------------7
5.2.2. Line-System Circuit --------------------------------- 10
5.2.3. Power Supply Circuit ------------------------------- 12

6 Location of Controls and Components------------------ 14

6.1. Names and Locations----------------------------------- 14

7 Installation Instructions--------------------------------------- 15

7.1. Information about the Physical Extension

Cards -------------------------------------------------------- 15

7.1.1. DLC16 Card ------------------------------------------ 15

8 Troubleshooting Guide---------------------------------------- 16
9 Miscellaneous ---------------------------------------------------- 20

9.1. How To Replace a Flat Package IC ----------------- 20

9.1.1. Preparation-------------------------------------------- 20
9.1.2. Removal Procedure--------------------------------- 20
9.1.3. Procedure --------------------------------------------- 20
9.1.4. Removing Solder From Between Pins --------- 20

9.2. Terminal Guide of the ICs Transistors and

Diodes------------------------------------------------------- 21

10 Schematic Diagram--------------------------------------------- 22

10.1. No.1---------------------------------------------------------- 22
10.2. No.2---------------------------------------------------------- 24
10.3. No.3---------------------------------------------------------- 26

11 Printed Circuit Board ------------------------------------------ 30

11.1. Component View ----------------------------------------- 30
11.2. Bottom View ----------------------------------------------- 31

12 Appendix Information of Schematic Diagram --------- 32
13 Exploded View and Replacement Parts List ----------- 33

13.1. IC Data------------------------------------------------------ 33

13.1.1. IC1 (ASIC Master)----------------------------------- 33
13.1.2. IC2 (ASIC Slave) ------------------------------------ 35

13.2. Cabinet and Electrical Parts Location--------------- 37
13.3. Accessories and Packing Material------------------- 38
13.4. Replacement Parts List --------------------------------- 39

13.4.1. Cabinet and Electrical Parts Location ---------- 39
13.4.2. Accessories and Packing Materials------------- 39
13.4.3. Main Board Parts ------------------------------------ 39