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TABLE OF CONTENTS PAGE PAGE 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 3 Specifications ----------------------------------------------------- 5 4 Technical Descriptions ----------------------------------------- 6 4.1. Block Diagram (Base Unit) ------------------------------ 6 4.2. Circuit Operation (Base Unit)--------------------------- 7 4.3. Block Diagram (Handset)-------------------------------10 4.4. Circuit Operation (Handset)----------------------------11 4.5. Circuit Operation (Charger Unit) ----------------------12 4.6. Signal Route -----------------------------------------------13 5 Location of Controls and Components ------------------15 5.1. Controls -----------------------------------------------------15 5.2. Display ------------------------------------------------------15 6 Installation Instructions ---------------------------------------15 6.1. Setting up the Base Unit --------------------------------15 6.2. Setting up the Handset----------------------------------16 6.3. Battery-------------------------------------------------------16 7 Operation Instructions-----------------------------------------18 7.1. Programmable Settings ---------------------------------18 7.2. Registering a Handset-----------------------------------20 7.3. Copying Handset Phonebook Items -----------------20 7.4. Error Messages -------------------------------------------21 7.5. Troubleshooting-------------------------------------------22 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) ---------44 9.3. Troubleshooting by Symptom (Handset) -----------44 9.4. How to Replace the Flat Package IC----------------45 9.5. How to Replace the LLP (Leadless Leadframe Package) IC------------------------------------------------47 10 Disassembly and Assembly Instructions ---------------49 10.1. Disassembly Instructions -------------------------------49 10.2. How to Replace the Handset LCD -------------------54 11 Measurements and Adjustments---------------------------55 11.1. The Setting Method of JIG (Base Unit) -------------55 11.2. Adjustment Standard (Base Unit)---------------------57 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. How to Check the Handset Speaker or Receiver ----------------------------------------------------64 11.8. Frequency Table (MHz) ---------------------------------64 12 Schematic Diagram---------------------------------------------65 12.1. For Schematic Diagram---------------------------------65 12.2. Schematic Diagram (Base Unit_Main) --------------66 12.3. Schematic Diagram (Base Unit_Operation) -------68 12.4. Schematic Diagram (Handset) ------------------------70 12.5. Schematic Diagram (Charger Unit) ------------------72 13 Printed Circuit Board-------------------------------------------73 13.1. Circuit Board (Base Unit_Main)-----------------------73 13.2. Circuit Board (Base Unit_Operation)---------------- 75 13.3. Circuit Board (Handset) -------------------------------- 77 13.4. Circuit Board (Charger Unit)--------------------------- 79 14 Appendix Information of Schematic Diagram--------- 80 14.1. CPU Data (Base Unit) ---------------------------------- 80 14.2. CPU Data (Handset) ------------------------------------ 82 14.3. Terminal Guide of the ICs, Transistors and Diodes ------------------------------------------------------ 84 15 Exploded View and Replacement Parts List ----------- 85 15.1. Cabinet and Electric Parts (Base Unit) ------------- 85 15.2. Cabinet and Electric Parts (Handset) --------------- 86 15.3. Cabinet and Electric Parts (Charger Unit) --------- 87 15.4. Accessories and Packing Materials ----------------- 88 15.5. Replacement Part List ---------------------------------- 92