KX-TG8011CAC, KX-TG8011CAS, KX-TG8011CAT, KX-TG8012CAS, KX-TG8012CAT, 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-----------------------------------------17

7.1. Programmable Settings ---------------------------------17
7.2. Registering a Handset to a Base Unit---------------19
7.3. Copying Phonebook Entries ---------------------------19
7.4. Dialling Mode ----------------------------------------------20
7.5. Error Messages -------------------------------------------20
7.6. Troubleshooting-------------------------------------------21
7.7. For Service Hint-------------------------------------------24

8 Service Mode -----------------------------------------------------25

8.1. Engineering Mode ----------------------------------------25
8.2. Copying Phonebook Items when Repairing -------29
8.3. How to Clear User Setting------------------------------31

9 Troubleshooting Guide ----------------------------------------32

9.1. Troubleshooting Flowchart -----------------------------32
9.2. Troubleshooting by Symptom (Base Unit and

Charger Unit) ----------------------------------------------44

9.3. Troubleshooting by Symptom (Handset) -----------48

10 Disassembly and Assembly Instructions ---------------52

10.1. Disassembly Instructions -------------------------------52
10.2. How to Replace the Handset LCD -------------------55

11 Measurements and Adjustments---------------------------56

11.1. The Setting Method of JIG (Base Unit) -------------56
11.2. Adjustment Standard (Base Unit)---------------------58
11.3. Adjustment Standard (Charger Unit)-----------------59
11.4. The Setting Method of JIG (Handset) ---------------60
11.5. Adjustment Standard (Handset) ----------------------62
11.6. Things to Do after Replacing IC or X'tal ------------63
11.7. RF Specification-------------------------------------------65
11.8. How to Check the Handset Speaker or

Receiver ----------------------------------------------------66

11.9. Frequency Table (MHz) ---------------------------------66

12 Miscellaneous ----------------------------------------------------67

12.1. CPU Data (Base Unit) -----------------------------------67
12.2. CPU Data (Handset)-------------------------------------69
12.3. How to Replace the Flat Package IC----------------71
12.4. Terminal Guide of the ICs, Transistors and

Diodes -------------------------------------------------------73

13 Schematic Diagram ---------------------------------------------75

13.1. For Schematic Diagram---------------------------------75

13.2. Schematic Diagram (Base Unit)---------------------- 76
13.3. Schematic Diagram (Handset)------------------------ 78
13.4. Schematic Diagram (Charger Unit)------------------ 80

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

14.1. Circuit Board (Base Unit)------------------------------- 81
14.2. Circuit Board (Handset) -------------------------------- 83
14.3. Circuit Board (Charger Unit)--------------------------- 85

15 Exploded View and Replacement Parts List ----------- 86

15.1. Cabinet and Electrical Parts (Base Unit) ----------- 86
15.2. Cabinet and Electrical Parts (Handset)------------- 87
15.3. Cabinet and Electrical Parts (Charger Unit) ------- 88
15.4. Accessories and Packing Materials ----------------- 89
15.5. Replacement Part List ---------------------------------- 92