KX-TGA914EXS - 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. About Lead Free Solder (Pbf: Pb free)--------------- 4

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

4.1. Block Diagram (Camera Unit) -------------------------- 7
4.2. Circuit Operation (Camera Unit) ----------------------- 8
4.3. Signal Route -----------------------------------------------12

5 Location of Controls and Components ------------------14

5.1. Controls -----------------------------------------------------14

6 Installation Instructions ---------------------------------------15

6.1. Setting up the cordless camera -----------------------15

7 Operation Instructions-----------------------------------------17

7.1. Registering the Cordless Camera --------------------17
7.2. Cancelling the Cordless Camera ---------------------17

8 SERVICE  MODE--------------------------------------------------17

8.1. How to Clear User Setting------------------------------17

9 Troubleshooting Guide ----------------------------------------18

9.1. Troubleshooting Flowchart -----------------------------18
9.2. Troubleshooting by Symptom (Camera)------------23
9.3. How to Replace the Flat Package IC----------------26

10 Disassembly and Assembly Instructions ---------------28

10.1. Disassembly Instructions -------------------------------28
10.2. Assembly Instructions -----------------------------------31

11 Measurements and Adjustments---------------------------34

11.1. The Setting Method of JIG -----------------------------34
11.2. Adjustment Standard ------------------------------------36
11.3. Things to Do after Replacing IC ----------------------37
11.4. RF Specification-------------------------------------------38
11.5. How to Check Speaker----------------------------------39
11.6. Frequency Table (MHz) ---------------------------------39

12 Schematic Diagram ---------------------------------------------40

12.1. For Schematic Diagram---------------------------------40
12.2. Schematic Diagram (Main)-----------------------------42
12.3. Schematic Diagram (RF Part) -------------------------44
12.4. Schematic Diagram (Camera Part) ------------------45
12.5. Schematic Diagram (Cord Switch) -------------------46

13 Printed Circuit Board-------------------------------------------47

13.1. Circuit Board (Main)--------------------------------------47
13.2. Circuit Board (RF Part)----------------------------------49
13.3. Circuit Board (Camera Part) ---------------------------51
13.4.  Circuit Board (Cord Switch) ---------------------------52

14 Appendix Information of Schematic Diagram ---------53

14.1. CPU Data---------------------------------------------------53
14.2. Terminal Guide of the ICs, Transistors and

Diodes -------------------------------------------------------56

15 Exploded View and Replacement Parts List -----------57

15.1. Cabinet and Electrical Parts (Cordless

Camera)-----------------------------------------------------57

15.2. Cabinet and Electrical Parts (Call Button)----------58
15.3. Cabinet and Electrical Parts (Wall Mounting

Adaptor)-----------------------------------------------------59

15.4. Accessories and Packing Materials------------------60
15.5. Replacement Parts List ---------------------------------61