KX-TG8061RUB, KX-TG8061UAB, KX-TG8061CAB, KX-TGA806RUB - 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) ------------------------------ 7
4.2. Circuit Operation (Base Unit) --------------------------- 8
4.3. Block Diagram (Handset)-------------------------------11
4.4. Circuit Operation (Handset)----------------------------12
4.5. Circuit Operation (Charger Unit) ----------------------13
4.6. Signal Route -----------------------------------------------14

5 Location of Controls and Components ------------------16
6 Installation Instructions ---------------------------------------16
7 Operating Instructions-----------------------------------------16

7.1. For Service Hint-------------------------------------------16

8 Service Mode -----------------------------------------------------17

8.1. Engineering Mode ----------------------------------------17
8.2. Copying Phonebook Items when Repairing -------21
8.3. How to Clear User Setting------------------------------23

9 Troubleshooting Guide ----------------------------------------24

9.1. Troubleshooting Flowchart -----------------------------24
9.2. Troubleshooting by Symptom (Base Unit and

Charger Unit) ----------------------------------------------36

9.3. Troubleshooting by Symptom (Handset) -----------40

10 Disassembly and Assembly Instructions ---------------44

10.1. Disassembly Instructions -------------------------------44
10.2. How to Replace the Base Unit LCD -----------------48
10.3. How to Replace the Handset LCD -------------------50

11 Measurements and Adjustments---------------------------51

11.1. Equipment Required -------------------------------------51
11.2. The Setting Method of JIG (Base Unit) -------------51
11.3. Adjustment Standard (Base Unit)---------------------53
11.4. Adjustment Standard (Charger Unit)-----------------54
11.5. The Setting Method of JIG (Handset) ---------------55
11.6. Adjustment Standard (Handset) ----------------------57
11.7. Things to Do after Replacing IC or X'tal ------------58
11.8. RF Specification-------------------------------------------60
11.9. How to Check the Handset Speaker or

Receiver ----------------------------------------------------61

11.10. Frequency Table (MHz) ---------------------------------61

12 Miscellaneous ----------------------------------------------------62

12.1. How to Replace the Flat Package IC ----------------62
12.2. How to Replace the Shield Case ---------------------64
12.3. Terminal Guide of the ICs, Transistors, Diodes

and Electrolytic Capacitors-----------------------------66

13 Schematic Diagram ---------------------------------------------67

13.1. For Schematic Diagram---------------------------------67
13.2. Schematic Diagram (Base Unit) ----------------------68
13.3. Schematic Diagram (Base Unit_Operation) -------70
13.4. Schematic Diagram (Handset) ------------------------72
13.5. Schematic Diagram (Charger Unit) ------------------74

14 Printed Circuit Board-------------------------------------------75

14.1. Circuit Board (Base Unit_Main) -----------------------75
14.2. Circuit Board (Base Unit_Operation) ----------------77
14.3. Circuit Board (Handset) ---------------------------------79

14.4. Circuit Board (Charger Unit)--------------------------- 81

15 Exploded View and Replacement Parts List ----------- 82

15.1. Cabinet and Electrical Parts (Base Unit) ----------- 82
15.2. Cabinet and Electrical Parts (Handset)------------- 83
15.3. Cabinet and Electrical Parts (Charger Unit) ------- 84
15.4. Accessories------------------------------------------------ 85
15.5. Replacement Part List ---------------------------------- 86