KX-TG8301UAB, KX-TG8301UAJ, KX-TG8301UAT, KX-TG8301UAW, KX-TG8302UAB, KX-TG8302UAT, KX-TGA830RUB, KX-TGA830RUJ, KX-TGA830RUT, KX-TGA830RUW (serv.man2) - Panasonic Telephone Service Manual (repair manual). Page 3

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KX-TG8301UAB/KX-TG8301UAJ/KX-TG8301UAT/KX-TG8301UAW/KX-TG8302UAB/KX-TG8302UAT/KX-TGA830RUB/KX-TGA830RUJ/KX-TGA830RUT/KX-TGA830RUW

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1 Safety Precaution ------------------------------------------------ 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 ---------------------------21
7.4. Dialling mode ----------------------------------------------21
7.5. Error Messages -------------------------------------------22
7.6. Troubleshooting-------------------------------------------23
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
9.4. How to Replace the Flat Package IC----------------54
9.5. How to Replace the LLP (Leadless Leadframe

Package) IC------------------------------------------------56

10 Disassembly and Assembly Instructions ---------------58

10.1. Disassembly Instructions -------------------------------58
10.2. How to Replace the Handset LCD -------------------61

11 Measurements and Adjustments---------------------------62

11.1. The Setting Method of JIG (Base Unit) -------------62
11.2. Adjustment Standard (Base Unit)---------------------64
11.3. Adjustment Standard (Charger Unit)-----------------65
11.4. The Setting Method of JIG (Handset) ---------------66
11.5. Adjustment Standard (Handset) ----------------------68
11.6. Things to Do after Replacing IC or X'tal ------------69
11.7. RF Specification-------------------------------------------71
11.8. How to Check the Handset Speaker or

Receiver ----------------------------------------------------72

11.9. Frequency Table (MHz) ---------------------------------72

12 Schematic Diagram ---------------------------------------------74

12.1. For Schematic Diagram---------------------------------74
12.2. Schematic Diagram (Base Unit) ----------------------75
12.3. Schematic Diagram (Handset) ------------------------77
12.4. Schematic Diagram (Charger Unit) ------------------79

13 Printed Circuit Board ------------------------------------------ 80

13.1. Circuit Board (Base Unit)------------------------------- 80
13.2. Circuit Board (Handset) -------------------------------- 82
13.3. Circuit Board (Charger Unit)--------------------------- 84

14 Appendix Information of Schematic Diagram --------- 85

14.1. CPU Data (Base Unit) ---------------------------------- 85
14.2. CPU Data (Handset) ------------------------------------ 87
14.3. Terminal Guide of the ICs, Transistors and

Diodes ------------------------------------------------------ 89

15 Exploded View and Replacement Parts List ----------- 90

15.1. Cabinet and Electric Parts (Base Unit) ------------- 90
15.2. Cabinet and Electric Parts (Handset) --------------- 91
15.3. Cabinet and Electric Parts (Charger Unit) --------- 92
15.4. Accessories and Packing Materials ----------------- 93
15.5. Replacement Part List ---------------------------------- 96