Panasonic KX-TG8041RUM, Service Manual

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KX-TG8041RU/KX-TGA800RU
TABLE OF CONTENTS
PAGE PAGE
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 Handset LCD -------------------48
11 Measurements and Adjustments --------------------------- 49
11.1. Equipment Required -------------------------------------49
11.2. The Setting Method of JIG (Base Unit) -------------49
11.3. Adjustment Standard (Base Unit)---------------------51
11.4. Adjustment Standard (Charger Unit)-----------------52
11.5. The Setting Method of JIG (Handset) ---------------53
11.6. Adjustment Standard (Handset) ----------------------55
11.7. Things to Do after Replacing IC or X'tal ------------56
11.8. RF Specification-------------------------------------------58
11.9. How to Check the Speaker or Receiver ------------59
11.10. Frequency Table (MHz) ---------------------------------59
12 Miscellaneous ---------------------------------------------------- 60
12.1. How to Replace the Flat Package IC----------------60
12.2. How to Replace the LLP (Leadless Leadframe
Package) IC------------------------------------------------62
12.3. Terminal Guide of the ICs, Transistors and
Diodes -------------------------------------------------------64
13 Schematic Diagram --------------------------------------------- 65
13.1. For Schematic Diagram---------------------------------65
13.2. Schematic Diagram (Base Unit_Main) --------------66
13.3. Schematic Diagram (Base Unit_RF Part) ----------68
13.4. Schematic Diagram (Base Unit_Operation) -------69
13.5. Schematic Diagram (Handset) ------------------------70
13.6. Schematic Diagram (Charger Unit) ------------------72
14 Printed Circuit Board ------------------------------------------- 73
14.1. Circuit Board (Base Unit_Main) -----------------------73
14.2. Circuit Board (Base Unit_Operation) ----------------75
14.3. Circuit Board (Handset) ---------------------------------77
14.4. Circuit Board (Charger Unit)--------------------------- 79
15 Exploded View and Replacement Parts List ----------- 80
15.1. Cabinet and Electrical Parts (Base Unit) ----------- 80
15.2. Cabinet and Electrical Parts (Handset)------------- 81
15.3. Cabinet and Electrical Parts (Charger Unit) ------- 82
15.4. Accessories and Packing Materials ----------------- 83
15.5. Replacement Part List ---------------------------------- 85