Panasonic KX-TGA820CB service manual

$7.95

Service manual used with:

KX-TG8231CB, KX-TG8232CB, KX-TGA820CB


Your service manual will be available to download (pdf format) following your payment!

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
5.1. Controls -----------------------------------------------------16
5.2. Displays -----------------------------------------------------16
6 Installation Instructions ---------------------------------------17
6.1. Connections------------------------------------------------17
6.2. Battery-------------------------------------------------------18
7 Operation Instructions-----------------------------------------20
7.1. Programmable Settings ---------------------------------20
7.2. Registering a Handset to a Base Unit ---------------23
7.3. Copying Handset Phonebook Entries ---------------23
7.4. Error Messages -------------------------------------------24
7.5. Troubleshooting-------------------------------------------25
8 Service Mode -----------------------------------------------------30
8.1. Engineering Mode----------------------------------------30
8.2. Copying Phonebook Items when Repairing -------34
8.3. How to Clear User Setting------------------------------36
9 Troubleshooting Guide----------------------------------------37
9.1. Troubleshooting Flowchart -----------------------------37
9.2. Troubleshooting by Symptom (Base Unit) ---------48
9.3. Troubleshooting by Symptom (Handset) -----------48
9.4. How to Replace the Flat Package IC----------------49
9.5. How to Replace the LLP (Leadless Leadframe
Package) IC------------------------------------------------51
10 Disassembly and Assembly Instructions ---------------53
10.1. Disassembly Instructions -------------------------------53
10.2. Assembly Instructions -----------------------------------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. How to Check the Handset Speaker or
Receiver ----------------------------------------------------66
11.8. Frequency Table (MHz) ---------------------------------66
12 Schematic Diagram---------------------------------------------67
12.1. For Schematic Diagram---------------------------------67
12.2. Schematic Diagram (Base Unit_Main) --------------68
12.3. Schematic Diagram (Base Unit_Operation) -------70
12.4. Schematic Diagram (Handset) ------------------------72
12.5. Schematic Diagram (Charger Unit) ------------------74
13 Printed Circuit Board-------------------------------------------75
13.1. Circuit Board (Base Unit_Main) -----------------------75
13.2. Circuit Board (Base Unit_Operation)---------------- 77
13.3. Circuit Board (Handset) -------------------------------- 79
13.4. Circuit Board (Charger Unit)--------------------------- 81
14 Appendix Information of Schematic Diagram--------- 82
14.1. CPU Data (Base Unit) ---------------------------------- 82
14.2. CPU Data (Handset) ------------------------------------ 84
14.3. Terminal Guide of the ICs, Transistors and
Diodes ------------------------------------------------------ 86
15 Exploded View and Replacement Parts List ----------- 87
15.1. Cabinet and Electrical Parts (Base Unit) ----------- 87
15.2. Cabinet and Electrical Parts (Handset)------------- 88
15.3. Cabinet and Electrical Parts (Charger Unit) ------- 89
15.4. Accessories and Packing Materials ----------------- 90
15.5. Replacement Part List ---------------------------------- 93



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