KX-TS2358UAB, KX-TS2358UAW (serv.man3) - Panasonic Telephone Service Manual (repair manual). Page 3

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1 Safety Precautions----------------------------------------------- 4

1.1. For Service Technicians --------------------------------- 4

2 Warning -------------------------------------------------------------- 4

2.1. Battery Caution--------------------------------------------- 4
2.2. About Lead Free Solder (PbF: Pb free)-------------- 4
2.3. Discarding of P.C. Board--------------------------------- 5

3 Specifications ----------------------------------------------------- 6
4 Technical Descriptions ----------------------------------------- 7

4.1. Block Diagram---------------------------------------------- 7
4.2. Circuit Operation------------------------------------------- 8

5 Location of Controls and Components ------------------12

5.1. Location of Controls--------------------------------------12
5.2. Display ------------------------------------------------------12

6 Installation Instructions ---------------------------------------13

6.1. Connections------------------------------------------------13
6.2. Connecting a Communication Device---------------13
6.3. Battery-------------------------------------------------------14

7 Operating Instructions-----------------------------------------15

7.1. Programmable Settings ---------------------------------15
7.2. Dial Lock ----------------------------------------------------16
7.3. Call Restriction --------------------------------------------16
7.4. Troubleshooting-------------------------------------------17

8 Troubleshooting Guide ----------------------------------------19

8.1. Service Hints-----------------------------------------------19
8.2. Pulse Dialing Problems ---------------------------------19
8.3. Tone Dialing Problems (handset)---------------------20
8.4. No Ringing Sound When Ring Signal is Input ----20

9 Disassembly and Assembly Instructions ---------------21

9.1. Disassembly Instructions -------------------------------21

10 Miscellaneous ----------------------------------------------------23

10.1. IC Block diagram -----------------------------------------23
10.2. How to Replace the Flat Package IC----------------30
10.3. Terminal Guide of the ICs, Transistors and

Diodes -------------------------------------------------------32

11 Schematic Diagram ---------------------------------------------33

11.1. For Schematic Diagram---------------------------------33
11.2. Schematic Diagram (Main)-----------------------------34
11.3. Schematic Diagram (Operation) ----------------------36

12 Printed Circuit Board-------------------------------------------39

12.1. Circuit Board (Main)--------------------------------------39
12.2. Circuit Board (Operation) -------------------------------41

13 Exploded View and Replacement Parts List -----------43

13.1. Cabinet and Electrical Parts ---------------------------43
13.2. Accessories and Packing Materials------------------44
13.3. Replacement Part List-----------------------------------45