KX-TG8107UA, KX-TG8108UA, KX-TGA810UA - 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

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

4.1. Block Diagram (Base Unit) ------------------------------ 7
4.2. Circuit Operation (Base Unit) --------------------------- 8
4.3. Block Diagram (Handset)-------------------------------10
4.4. Circuit Operation (Handset)----------------------------11
4.5. Circuit Operation (Charger Unit) ----------------------11
4.6. Signal Route -----------------------------------------------12

5 Location of Controls and Components ------------------13

5.1. Controls -----------------------------------------------------13

6 Installation Instructions ---------------------------------------14

6.1. Connections------------------------------------------------14
6.2. Battery-------------------------------------------------------14

7 Operation Instructions-----------------------------------------16

7.1. Base Unit Settings----------------------------------------16
7.2. Handset Settings -----------------------------------------17
7.3. Registering a Handset to a Base Unit---------------18
7.4. For Service Hint-------------------------------------------19

8 Service Mode -----------------------------------------------------20

8.1. Engineering Mode ----------------------------------------20
8.2. EEPROM Layout (Base Unit)--------------------------25
8.3. EEPROM Layout (Handset) ---------------------------30

9 Troubleshooting Guide ----------------------------------------33

9.1. Troubleshooting Flowchart -----------------------------33
9.2. Troubleshooting by Symptom (Base Unit and

Charger Unit) ----------------------------------------------41

9.3. Troubleshooting by Symptom (Handset) -----------45
9.4. How to Replace the Flat Package IC----------------48

10 Disassembly and Assembly Instructions ---------------50

10.1. Disassembly Instructions -------------------------------50
10.2. Assembly Instructions -----------------------------------53

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

11.1. The Setting Method of JIG (Base Unit) -------------54
11.2. Adjustment Standard (Base Unit)---------------------56
11.3. Adjustment Standard (Charger Unit)-----------------57
11.4. The Setting Method of JIG (Handset) ---------------58
11.5. Adjustment Standard (Handset) ----------------------60
11.6. Things to Do after Replacing IC ----------------------61
11.7. RF Specification-------------------------------------------62
11.8. How to Check the Handset Speaker or

Receiver ----------------------------------------------------63

11.9. Frequency Table (MHz) ---------------------------------63

12 Schematic Diagram ---------------------------------------------65

12.1. For Schematic Diagram---------------------------------65
12.2. Schematic Diagram (Base Unit) ----------------------66
12.3. Schematic Diagram (Handset) ------------------------68
12.4. Schematic Diagram (Charger Unit) ------------------70

13 Printed Circuit Board-------------------------------------------71

13.1. Circuit Board (Base Unit) -------------------------------71
13.2. Circuit Board (Handset) ---------------------------------73
13.3. Circuit Board (Charger Unit) ---------------------------75

14 Appendix Information of Schematic Diagram ---------76

14.1. CPU Data (Base Unit) -----------------------------------76

14.2. CPU Data (Handset) ------------------------------------ 78
14.3. Terminal Guide of the ICs, Transistors and

Diodes ------------------------------------------------------ 80

15 Exploded View and Replacement Parts List ----------- 81

15.1. Cabinet and Electrical Parts (Base Unit) ----------- 81
15.2. Cabinet and Electrical Parts (Handset)------------- 82
15.3. Cabinet and Electrical Parts (Charger Unit) ------- 83
15.4. Accessories and Packing Materials ----------------- 84
15.5. Replacement Parts List--------------------------------- 87