KX-TCA355RU - Panasonic PBX Service Manual (repair manual). Page 2

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1 Safety Precautions -----------------------------------------------3

1.1. For Service Technicians ----------------------------------3

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

2.1. About Lead Free Solder (PbF: Pb free) --------------4

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

4.1. Block Diagram (Handset) --------------------------------6
4.2. Circuit Operation (Handset) -----------------------------7
4.3. Block Diagram (RF Unit) ---------------------------------8
4.4. Circuit Operation (Charge Unit) ------------------------9
4.5. Signal Route-------------------------------------------------9

5 Location of Controls and Components------------------ 10

5.1. Location of Controls (Handset) ----------------------- 10

6 Installation Instructions--------------------------------------- 10

6.1. Connection------------------------------------------------- 10
6.2. Battery ------------------------------------------------------ 11

7 Operation Instructions ---------------------------------------- 13

7.1. Soft Key Display ------------------------------------------ 13
7.2. Settings Menu Chart (Handset) ---------------------- 14
7.3. Key Lock---------------------------------------------------- 15
7.4. Selecting the Display Language---------------------- 15
7.5. Display ------------------------------------------------------ 15

8 Troubleshooting Guide---------------------------------------- 22

8.1. Check Power (Handset) -------------------------------- 23
8.2. Charge Unit ------------------------------------------------ 23
8.3. Check Battery Charge (Handset) -------------------- 24
8.4. Check Link (Handset) ----------------------------------- 26
8.5. Check Handset Transmission------------------------- 27
8.6. Check Handset Reception ----------------------------- 27
8.7. Bell Reception (Handset) ------------------------------ 27

9 Service Fixture & Tools --------------------------------------- 28

10 Disassembly and Assembly Instructions--------------- 29

10.1. Handset----------------------------------------------------- 29
10.2. Charger Unit ----------------------------------------------- 30

11 Measurements and Adjustments -------------------------- 31

11.1. Check Procedure (Handset)--------------------------- 31
11.2. Adjustments (Handset and Charger Unit)---------- 36
11.3. RF Specification (Handset) ---------------------------- 41
11.4. How to Check the Handset Speaker ---------------- 42
11.5. How to Check the Handset Receiver --------------- 42
11.6. Frequency Table (MHz)--------------------------------- 43

12 Miscellaneous ---------------------------------------------------- 44

12.1. Terminal Guide of the ICs, Transistors and

Diodes------------------------------------------------------- 44

12.2. How To Replace a Flat Package IC ----------------- 45

13 Schematic Diagram--------------------------------------------- 46

13.1. Handset----------------------------------------------------- 46
13.2. Handset (RF Unit)---------------------------------------- 48
13.3. Charger Unit ----------------------------------------------- 49

14 Printed Circuit Board ------------------------------------------ 50

14.1. Handset----------------------------------------------------- 50
14.2. Charger Unit ----------------------------------------------- 51

15 Appendix Information of Schematic Diagram --------- 51
16 Exploded View and Replacement Parts List ----------- 52

16.1. CPU Data (Handset) ------------------------------------ 52
16.2. Cabinet and electrical Parts Location

(Handset)--------------------------------------------------- 54

16.3. Accessories and Packing Materials ----------------- 56

16.4. Replacement Part List---------------------------------- 57