Service manual used with:

KX-TG9332S
KX-TG9332T
KX-TG9333T
KX-TG9334T
KX-TGA931S
KX-TGA931T

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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. US-DECT Description ------------------------------------ 7
4.2. Block Diagram (Base Unit_Main)---------------------- 9
4.3. Block Diagram (Base Unit_RF Part)-----------------10
4.4. Circuit Operation (Base Unit) --------------------------11
4.5. Block Diagram (Handset)-------------------------------20
4.6. Block Diagram (Handset_RF Part)-------------------21
4.7. Circuit Operation (Handset)----------------------------22
4.8. Circuit Operation (RF Part)-----------------------------26
4.9. Circuit Operation (Charger Unit) ----------------------27
4.10. Signal Route -----------------------------------------------28
5 Location of Controls and Components ------------------30
5.1. Controls -----------------------------------------------------30
5.2. Display ------------------------------------------------------30
6 Installation Instructions ---------------------------------------31
6.1. Connections------------------------------------------------31
6.2. Battery-------------------------------------------------------31
7 Operating Instructions-----------------------------------------33
7.1. Programmable Settings ---------------------------------33
7.2. Error Messages -------------------------------------------36
7.3. Troubleshooting-------------------------------------------37
8 Test Mode ----------------------------------------------------------41
8.1. Adjustment and Test Mode Flow Chart -------------41
9 Service Mode -----------------------------------------------------48
9.1. How to Clear User Setting------------------------------48
10 Troubleshooting Guide----------------------------------------50
10.1. Troubleshooting Flowchart -----------------------------50
10.2. How to Replace the Flat Package IC----------------63
10.3. How to Replace the LLP (Leadless Leadframe
Package) IC------------------------------------------------65
11 Disassembly and Assembly Instructions ---------------68
11.1. Disassembly Instructions -------------------------------68
11.2. How to Replace the Handset LCD -------------------72
12 Measurements and Adjustments---------------------------74
12.1. Things to Do after Replacing IC or X’tal ------------74
12.2. Base Unit Reference Drawing-------------------------75
12.3. Handset Reference Drawing---------------------------76
12.4. Frequency Table ------------------------------------------77
13 Schematic Diagram---------------------------------------------79
13.1. For Schematic Diagram---------------------------------79
13.2. Schematic Diagram (Base Unit_Main) --------------80
13.3. Schematic Diagram (Base Unit_RF Part) ----------82
13.4. Schematic Diagram (Base Unit_Operation) -------83
13.5. Schematic Diagram (Handset_Main)----------------84
13.6. Schematic Diagram (Handset_RF Part) ------------86
13.7. Schematic Diagram (Charger Unit) -----------------87
14 Printed Circuit Board-------------------------------------------89
14.1. Circuit Board (Base Unit_Main) -----------------------89
14.2. Circuit Board (Base Unit_RF Part) -------------------91
14.3. Circuit Board (Base Unit_Operation) ----------------93
14.4. Circuit Board (Handset_Main)-------------------------95
14.5. Circuit Board (Handset_RF Part) -------------------- 97
14.6. Circuit Board (Charger Unit)--------------------------- 98
15 Appendix Information of Schematic Diagram--------- 99
15.1. CPU Data (Base Unit) ---------------------------------- 99
15.2. CPU Data (Handset) ---------------------------------- 100
15.3. Explanation of IC Terminals (RF Part) ------------ 101
15.4. Terminal Guide of the ICs, Transistors and
Diodes ---------------------------------------------------- 102
16 Exploded View and Replacement Parts List --------- 103
16.1. Cabinet and Electrical Parts (Base Unit) --------- 103
16.2. Cabinet and Electrical Parts (Handset)----------- 104
16.3. Cabinet and Electrical Parts (Charger Unit) ----- 105
16.4. Accessories and Packing Materials --------------- 106
16.5. Replacement Parts List------------------------------- 109