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KX-TG6711RU/KX-TG6712RU/KX-TG6721RU/KX-TG6722RU/KX-TG6711CA/KX-TG6712CA/KX-TG6721CA/KX-TG6722CA/KX-TG6711UA/KX-TG6712UA/KX-TG672IUA//KX-TGA671EX
TABLE OF CONTENTS
PAGE
PAGE
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. 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 Technical Descriptions ----------------------------------------- 8
4.1. Block Diagram (Base Unit) ------------------------------ 8
4.2. Circuit Operation (Base Unit) --------------------------- 9
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. Circuit Operation (Base Unit) -------------------------- 11
4.4.1. BBIC (Base Band IC: IC501) --------------------- 11
4.4.2. Flash Memory (IC601) (for KX-TG6721
4.4.2. Flash Memory (IC601) (for KX-TG6721
only) ----------------------------------------------------- 11
4.4.3. EEPROM (IC611) ------------------------------------ 11
4.4.4. Telephone Line Interface---------------------------12
4.4.5. Power Supply Circuit--------------------------------12
4.4.4. Telephone Line Interface---------------------------12
4.4.5. Power Supply Circuit--------------------------------12
4.5. Block Diagram (Handset)-------------------------------14
4.6. Circuit Operation (Handset)----------------------------15
4.6. Circuit Operation (Handset)----------------------------15
4.6.1. Outline --------------------------------------------------15
4.6.2. Power Supply Circuit/Reset Circuit--------------15
4.6.3. Charge Circuit ----------------------------------------15
4.6.4. Battery Low/Power Down Detector--------------15
4.6.5. Speakerphone ----------------------------------------15
4.6.2. Power Supply Circuit/Reset Circuit--------------15
4.6.3. Charge Circuit ----------------------------------------15
4.6.4. Battery Low/Power Down Detector--------------15
4.6.5. Speakerphone ----------------------------------------15
4.7. Circuit Operation (Charger Unit) ----------------------16
4.7.1. Power Supply Circuit--------------------------------16
4.8. Signal Route -----------------------------------------------18
5 Location of Controls and Components ------------------20
6 Installation Instructions ---------------------------------------20
7 Operating Instructions-----------------------------------------20
6 Installation Instructions ---------------------------------------20
7 Operating Instructions-----------------------------------------20
7.1. For Service Hint-------------------------------------------20
8 Service Mode -----------------------------------------------------21
8.1. Engineering Mode ----------------------------------------21
8.1.1. Base Unit ----------------------------------------------21
8.1.2. Handset ------------------------------------------------23
8.1.2. Handset ------------------------------------------------23
8.2. EEPROM LAYOUT (Handset)-------------------------25
8.2.1. Scope ---------------------------------------------------25
8.2.2. Introduction--------------------------------------------25
8.2.3. EEPROM contents ----------------------------------25
8.2.2. Introduction--------------------------------------------25
8.2.3. EEPROM contents ----------------------------------25
8.3. Copying Phonebook Items when Repairing -------26
8.4. How to Clear User Setting------------------------------28
8.4. How to Clear User Setting------------------------------28
8.4.1. Resetting both base unit and handset----------28
8.4.2. Resetting only handset -----------------------------28
8.4.2. Resetting only handset -----------------------------28
9 Troubleshooting Guide ----------------------------------------29
9.1. Troubleshooting Flowchart -----------------------------29
9.1.1. Check Power------------------------------------------30
9.1.2. Check Battery Charge ------------------------------31
9.1.3. Check Link---------------------------------------------32
9.1.4. Check the RF part -----------------------------------35
9.1.5. Check Handset Transmission --------------------38
9.1.6. Check Handset Reception-------------------------38
9.1.7. Check Caller ID --------------------------------------38
9.1.8. Bell Reception ----------------------------------------39
9.1.9. Check TAM Operation (for KX-TG6721
9.1.2. Check Battery Charge ------------------------------31
9.1.3. Check Link---------------------------------------------32
9.1.4. Check the RF part -----------------------------------35
9.1.5. Check Handset Transmission --------------------38
9.1.6. Check Handset Reception-------------------------38
9.1.7. Check Caller ID --------------------------------------38
9.1.8. Bell Reception ----------------------------------------39
9.1.9. Check TAM Operation (for KX-TG6721
only) -----------------------------------------------------39
9.2. Troubleshooting by Symptom (Base Unit and
Charger Unit)---------------------------------------------- 41
9.2.1. Check Point (Base Unit) --------------------------- 41
9.2.2. Check Point (Charger Unit) ----------------------- 42
9.2.2. Check Point (Charger Unit) ----------------------- 42
9.3. Troubleshooting by Symptom (Handset)----------- 43
9.3.1. Check Point (Handset)----------------------------- 43
9.3.2. Troubleshooting for Speakerphone ------------- 46
9.3.2. Troubleshooting for Speakerphone ------------- 46
10 Disassembly and Assembly Instructions--------------- 47
10.1. Disassembly Instructions------------------------------- 47
10.1.1. Base Unit ---------------------------------------------- 47
10.1.2. Handset------------------------------------------------ 51
10.1.3. Charger Unit ------------------------------------------ 52
10.1.2. Handset------------------------------------------------ 51
10.1.3. Charger Unit ------------------------------------------ 52
10.2. How to Replace the Base Unit LCD (KX-
TG6721 Only) --------------------------------------------- 53
10.3. How to Replace the Handset LCD------------------- 55
11 Measurements and Adjustments -------------------------- 56
11.1. Equipment Required ------------------------------------ 56
11.2. The Setting Method of JIG (Base Unit) ------------- 56
11.2. The Setting Method of JIG (Base Unit) ------------- 56
11.2.1. Connections ------------------------------------------ 56
11.2.2. How to install Batch file into P.C. ---------------- 57
11.2.3. Commands-------------------------------------------- 57
11.2.2. How to install Batch file into P.C. ---------------- 57
11.2.3. Commands-------------------------------------------- 57
11.3. Adjustment Standard (Base Unit) -------------------- 58
11.3.1. Bottom View ------------------------------------------ 58
11.4. Adjustment Standard (Charger Unit) ---------------- 59
11.4.1. Bottom View ------------------------------------------ 59
11.5. The Setting Method of JIG (Handset)--------------- 60
11.5.1. Connections ------------------------------------------ 60
11.5.2. How to install Batch file into P.C. ---------------- 61
11.5.3. Commands-------------------------------------------- 61
11.5.2. How to install Batch file into P.C. ---------------- 61
11.5.3. Commands-------------------------------------------- 61
11.6. Adjustment Standard (Handset) ---------------------- 62
11.6.1. Component View ------------------------------------ 62
11.7. Things to Do after Replacing IC or X'tal ------------ 63
11.7.1. How to download the data ------------------------ 63
11.8. RF Specification ------------------------------------------ 65
11.8.1. Base Unit ---------------------------------------------- 65
11.8.2. Handset------------------------------------------------ 65
11.8.2. Handset------------------------------------------------ 65
11.9. How to Check the Handset Speaker or
Receiver ---------------------------------------------------- 66
11.10. Frequency Table (MHz)--------------------------------- 66
12 Miscellaneous---------------------------------------------------- 67
12.1. How to Replace the Flat Package IC --------------- 67
12.1.1. Preparation-------------------------------------------- 67
12.1.2. How to Remove the IC----------------------------- 67
12.1.3. How to Install the IC -------------------------------- 68
12.1.4. How to Remove a Solder Bridge ---------------- 68
12.1.2. How to Remove the IC----------------------------- 67
12.1.3. How to Install the IC -------------------------------- 68
12.1.4. How to Remove a Solder Bridge ---------------- 68
12.2. How to Replace the Shield Case--------------------- 69
12.2.1. Preparation-------------------------------------------- 69
12.2.2. Caution------------------------------------------------- 69
12.2.3. How to Remove the Shield Case---------------- 69
12.2.4. How to Install the Shield Case ------------------- 70
12.2.2. Caution------------------------------------------------- 69
12.2.3. How to Remove the Shield Case---------------- 69
12.2.4. How to Install the Shield Case ------------------- 70
12.3. Terminal Guide of the ICs, Transistors, Diodes
and Electrolytic Capacitors ---------------------------- 71
12.3.1. Base Unit ---------------------------------------------- 71
12.3.2. Handset------------------------------------------------ 71
12.3.3. Charger Unit ------------------------------------------ 71
12.3.2. Handset------------------------------------------------ 71
12.3.3. Charger Unit ------------------------------------------ 71
13 Schematic Diagram -------------------------------------------- 72
13.1. For Schematic Diagram -------------------------------- 72
13.1.1. Base Unit (Base Unit (Main))--------------------- 72
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