KX-TG6561RUT, KX-TGA651RUT - 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 (Base Unit_Main)---------------------- 7
4.2. Block Diagram (Base Unit_RF Part) ------------------ 8
4.3. Circuit Operation (Base Unit) --------------------------- 9
4.4. Block Diagram (Handset)-------------------------------15
4.5. Circuit Operation (Handset)----------------------------16
4.6. Circuit Operation (Charger Unit) ----------------------17
4.7. Signal Route -----------------------------------------------18

5 Location of Controls and Components ------------------20
6 Installation Instructions ---------------------------------------20
7 Operating Instructions-----------------------------------------20

7.1. For Service Hint-------------------------------------------20

8 Service Mode -----------------------------------------------------21

8.1. Engineering Mode ----------------------------------------21
8.2. Copying Phonebook Items when Repairing -------25
8.3. How to Clear User Setting------------------------------27

9 Troubleshooting Guide ----------------------------------------28

9.1. Troubleshooting Flowchart -----------------------------28
9.2. Troubleshooting by Symptom (Base Unit and

Charger Unit) ----------------------------------------------42

9.3. Troubleshooting by Symptom (Handset) -----------45

10 Disassembly and Assembly Instructions ---------------49

10.1. Disassembly Instructions -------------------------------49
10.2. How to Replace the Handset LCD -------------------53

11 Measurements and Adjustments---------------------------54

11.1. Equipment Required -------------------------------------54
11.2. The Setting Method of JIG (Base Unit) -------------54
11.3. Adjustment Standard (Base Unit)---------------------56
11.4. Adjustment Standard (Charger Unit)-----------------57
11.5. The Setting Method of JIG (Handset) ---------------58
11.6. Adjustment Standard (Handset) ----------------------60
11.7. Things to Do after Replacing IC or X'tal ------------61
11.8. RF Specification-------------------------------------------63
11.9. How to Check the Handset Speaker or

Receiver ----------------------------------------------------64

11.10. Frequency Table (MHz) ---------------------------------64

12 Miscellaneous ----------------------------------------------------65

12.1. How to Replace the Flat Package IC----------------65
12.2. How to Replace the LLP (Leadless Leadframe

Package) IC------------------------------------------------67

12.3. How to Replace the Shield Case ---------------------69
12.4. Terminal Guide of the ICs, Transistors, Diodes

and Electrolytic Capacitors-----------------------------71

13 Schematic Diagram ---------------------------------------------72

13.1. For Schematic Diagram---------------------------------72
13.2. Schematic Diagram (Base Unit) ----------------------74
13.3. Schematic Diagram (Base Unit_Operation) -------76
13.4. Schematic Diagram (Handset) ------------------------78
13.5. Schematic Diagram (Charger Unit) ------------------80

14 Printed Circuit Board-------------------------------------------81

14.1. Circuit Board (Base Unit_Main) -----------------------81

14.2. Circuit Board (Base Unit_Operation)---------------- 83
14.3. Circuit Board (Handset) -------------------------------- 85
14.4. Circuit Board (Charger Unit)--------------------------- 87

15 Exploded View and Replacement Parts List ----------- 88

15.1. Cabinet and Electrical Parts (Base Unit) ----------- 88
15.2. Cabinet and Electrical Parts (Handset)------------- 89
15.3. Cabinet and Electrical Parts (Charger Unit) ------- 90
15.4. Accessories------------------------------------------------ 91
15.5. Replacement Part List ---------------------------------- 92