Table of Contents
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TABLE OF CONTENTS
1 Safety Precautions----------------------------------------------- 5
1.1. For Service Technicians --------------------------------- 5
2 Warning -------------------------------------------------------------- 5
2.1. Battery Caution--------------------------------------------- 5
2.2. About Lead Free Solder (PbF: Pb free)-------------- 5
2.2.1. Suggested PbF Solder ------------------------------ 6
2.3. Discarding of P. C. Board-------------------------------- 6
3 Specifications ----------------------------------------------------- 7
4 Technical Descriptions ----------------------------------------- 8
4.1. Block Diagram (Base Unit_Main)---------------------- 8
4.2. Circuit Operation (Base Unit) --------------------------- 9
4.2.1. Outline --------------------------------------------------- 9
4.3. Block Diagram (Base Unit_RF Part) -----------------10
4.4. Circuit Operation (Base Unit) -------------------------- 11
4.4.1. BBIC (Base Band IC: IC501) --------------------- 11
4.4.2. Flash Memory (IC601)------------------------------ 11
4.4.3. EEPROM (IC611) ------------------------------------ 11
4.4.4. Power Supply Circuit/Reset Circuit--------------12
4.4.5. Telephone Line Interface---------------------------14
4.5. Block Diagram (Handset)-------------------------------15
4.6. Circuit Operation (Handset)----------------------------16
4.6.1. Outline --------------------------------------------------16
4.6.2. Power Supply Circuit/Reset Circuit--------------16
4.6.3. Charge Circuit ----------------------------------------16
4.6.4. Battery Low/Power Down Detector--------------16
4.6.5. Speakerphone ----------------------------------------16
4.7. Signal Route -----------------------------------------------17
5 Location of Controls and Components ------------------19
6 Installation Instructions ---------------------------------------19
7 Operating Instructions-----------------------------------------19
7.1. For Service Hint-------------------------------------------19
8 Test Mode ----------------------------------------------------------20
8.1. Engineering Mode ----------------------------------------20
8.1.1. Base Unit ----------------------------------------------20
8.1.2. Handset ------------------------------------------------22
8.2. EEPROM LAYOUT (Handset)-------------------------24
8.2.1. Scope ---------------------------------------------------24
8.2.2. Introduction --------------------------------------------24
8.2.3. EEPROM contents ----------------------------------24
8.3. How to Clear User Setting------------------------------25
8.3.1. Resetting both base unit and handset----------25
8.3.2. Resetting only handset -----------------------------25
9 Troubleshooting Guide ----------------------------------------26
9.1. Troubleshooting Flowchart -----------------------------26
9.1.1. Check Power------------------------------------------27
9.1.2. Check Record ----------------------------------------28
9.1.3. Check Playback -------------------------------------29
9.1.4. Check Battery Charge ------------------------------29
9.1.5. Check Link---------------------------------------------30
9.1.6. Check the RF part -----------------------------------32
9.1.8. Deregistering a Handset ---------------------------36
9.1.9. Check Handset Transmission --------------------37
9.1.10. Check Handset Reception-------------------------37
9.1.11. Check Caller ID --------------------------------------37
9.1.12. Bell Reception ----------------------------------------38
9.1.13. Check TAM Operation ------------------------------38
PAGE
Charger Unit)---------------------------------------------- 39
9.2.1. Check Point (Base Unit) --------------------------- 39
9.3. Troubleshooting by Symptom (Handset)----------- 41
9.3.1. Check Point (Handset) ----------------------------- 41
10 Disassembly and Assembly Instructions--------------- 44
10.1. Disassembly Instructions------------------------------- 44
10.1.1. Base Unit ---------------------------------------------- 44
10.1.2. Handset ------------------------------------------------ 46
10.1.3. Charger Unit ------------------------------------------ 47
10.2. How to Replace the Handset LCD------------------- 48
11 Measurements and Adjustments -------------------------- 49
11.1. Equipment Required ------------------------------------ 49
11.2. The Setting Method of JIG----------------------------- 49
11.2.1. Connections (Base Unit) -------------------------- 49
11.2.2. How to install Batch file into P.C. ---------------- 50
11.2.3. Commands-------------------------------------------- 50
11.3. Adjustment Standard (Base Unit) -------------------- 51
11.3.1. Bottom View ------------------------------------------ 51
11.4. The Setting Method of JIG (Handset)--------------- 52
11.4.1. Connections ------------------------------------------ 52
11.4.2. How to install Batch file into P.C. ---------------- 53
11.4.3. Commands-------------------------------------------- 53
11.5. Adjustment Standard (Handset) ---------------------- 54
11.5.1. Component View ------------------------------------ 54
11.6. Things to Do after Replacing IC or X'tal ------------ 55
11.6.1. How to download the data ------------------------ 55
11.7. RF Specification ------------------------------------------ 57
11.7.1. Base Unit ---------------------------------------------- 57
11.7.2. Handset ------------------------------------------------ 57
Receiver ---------------------------------------------------- 58
11.9. Frequency Table (MHz)--------------------------------- 58
12 Miscellaneous---------------------------------------------------- 59
12.1. How to Replace the Flat Package IC --------------- 59
12.1.1. Preparation-------------------------------------------- 59
12.1.2. How to Remove the IC ----------------------------- 59
12.1.3. How to Install the IC -------------------------------- 60
12.1.4. How to Remove a Solder Bridge ---------------- 60
12.2. How to Replace the Shield Case--------------------- 61
12.2.1. Preparation-------------------------------------------- 61
12.2.2. Caution------------------------------------------------- 61
12.2.3. How to Remove the Shield Case---------------- 61
12.2.4. How to Install the Shield Case ------------------- 62
Diodes ------------------------------------------------------ 63
12.3.1. Base Unit ---------------------------------------------- 63
12.3.2. Handset ------------------------------------------------ 63
13 Schematic Diagram -------------------------------------------- 65
13.1. For Schematic Diagram -------------------------------- 65
13.1.1. Base Unit (Base Unit (Main)) --------------------- 65
13.1.2. Handset (Handset (Main)) ------------------------ 65
13.2. Base Unit (Main) ----------------------------------------- 66
13.2.1. KX-TGC220------------------------------------------- 66
13.3. Base Unit (Operation)----------------------------------- 68
13.4. Handset (Main) ------------------------------------------- 70
14 Printed Circuit Board ------------------------------------------ 73
14.1. Base Unit (Main) ----------------------------------------- 73
3
KX-TGC220/KX-TGC222/KX-TGC223/KX-TGCA20
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Table of Contents
Troubleshooting
