KX-TG8011UAC, KX-TG8011UAS, KX-TG8011UAT, KX-TG8012UAS, KX-TG8012UAT, KX-TGA800RUC, KX-TGA800RUS, KX-TGA800RUT - 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 ------------------15

5.1. Controls -----------------------------------------------------15

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

6.1. Connections------------------------------------------------15
6.2. Battery-------------------------------------------------------16

7 Operating Instructions-----------------------------------------18

7.1. Programmable Settings ---------------------------------18
7.2. Registering a Handset to a Base Unit---------------20
7.3. Copying Phonebook Entries ---------------------------20
7.4. Dialling Mode (Tone/Pulse) ----------------------------21
7.5. Error Messages -------------------------------------------21
7.6. Troubleshooting-------------------------------------------22
7.7. For Service Hint-------------------------------------------26

8 Service Mode -----------------------------------------------------27

8.1. Engineering Mode ----------------------------------------27
8.2. Copying Phonebook Items when Repairing -------31
8.3. How to Clear User Setting------------------------------33

9 Troubleshooting Guide ----------------------------------------34

9.1. Troubleshooting Flowchart -----------------------------34
9.2. Troubleshooting by Symptom (Base Unit and

Charger Unit) ----------------------------------------------46

9.3. Troubleshooting by Symptom (Handset) -----------50

10 Disassembly and Assembly Instructions ---------------54

10.1. Disassembly Instructions -------------------------------54
10.2. How to Replace the Handset LCD -------------------57

11 Measurements and Adjustments---------------------------58

11.1. The Setting Method of JIG (Base Unit) -------------58
11.2. Adjustment Standard (Base Unit)---------------------60
11.3. Adjustment Standard (Charger Unit)-----------------61
11.4. The Setting Method of JIG (Handset) ---------------62
11.5. Adjustment Standard (Handset) ----------------------64
11.6. Things to Do after Replacing IC or X'tal ------------65
11.7. RF Specification-------------------------------------------67
11.8. How to Check the Handset Speaker or

Receiver ----------------------------------------------------68

11.9. Frequency Table (MHz) ---------------------------------68

12 Miscellaneous ----------------------------------------------------69

12.1. CPU Data (Base Unit) -----------------------------------69
12.2. CPU Data (Handset)-------------------------------------71
12.3. How to Replace the Flat Package IC----------------73
12.4. Terminal Guide of the ICs, Transistors and

Diodes -------------------------------------------------------75

13 Schematic Diagram ---------------------------------------------76

13.1. For Schematic Diagram---------------------------------76

13.2. Schematic Diagram (Base Unit)---------------------- 78
13.3. Schematic Diagram (Handset)------------------------ 80
13.4. Schematic Diagram (Charger Unit)------------------ 82

14 Printed Circuit Board ------------------------------------------ 83

14.1. Circuit Board (Base Unit)------------------------------- 83
14.2. Circuit Board (Handset) -------------------------------- 85
14.3. 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 and Packing Materials ----------------- 91
15.5. Replacement Part List ---------------------------------- 94