Table Of Contents - Panasonic KX-TG4221N Service Manual

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. US-DECT Description ------------------------------------ 8
4.1.1. TDD Frame Format ---------------------------------- 8
4.1.2. TDMA system------------------------------------------ 8
4.1.3. Signal Flowchart in the Radio Parts-------------- 9
4.2. Block Diagram (Base Unit_Main)---------------------10
4.3. Block Diagram (Base Unit_RF Part) ----------------- 11
4.4. Circuit Operation (Base Unit) --------------------------12
4.4.1. BBIC (Base Band IC: IC501) ---------------------12
4.4.2. Flash Memory (IC601)------------------------------12
4.4.3. EEPROM (IC611) ------------------------------------12
4.4.4. Power Supply Circuit/Reset Circuit--------------13
4.4.5. Telephone Line Interface---------------------------15
4.4.6. Parallel Connection Detect Circuit/Auto
Disconnect Circuit -----------------------------------16
4.4.7. Calling Line Identification (Caller ID)/Call
Waiting Caller ID -------------------------------------17
4.5. Block Diagram (Handset)-------------------------------19
4.6. Block Diagram (Handset_RF Part)-------------------20
4.7. Circuit Operation (Handset)----------------------------21
4.7.1. Outline --------------------------------------------------21
4.7.2. Power Supply Circuit/Reset Circuit--------------21
4.7.3. Charge Circuit ----------------------------------------22
4.7.4. Battery Low/Power Down Detector--------------22
4.7.5. Speakerphone ----------------------------------------22
4.8. Signal Route -----------------------------------------------23
5 Location of Controls and Components ------------------25
6 Installation Instructions ---------------------------------------25
7 Operating Instructions-----------------------------------------25
8 Test Mode ----------------------------------------------------------26
8.1. Engineering Mode ----------------------------------------26
8.1.1. Base Unit ----------------------------------------------26
8.1.2. Handset ------------------------------------------------28
9 Service Mode -----------------------------------------------------30
9.1. How to Clear User Setting (Handset Only)---------30
10 Troubleshooting Guide ----------------------------------------31
10.1. Troubleshooting Flowchart -----------------------------31
10.1.1. Check Power------------------------------------------32
10.1.2. Check Record ----------------------------------------33
10.1.3. Check Playback -------------------------------------34
10.1.4. Check Battery Charge ------------------------------34
10.1.5. Check Link---------------------------------------------35
10.1.6. Check the RF part -----------------------------------37
10.1.7. Registering a Handset to the Base Unit--------41
10.1.8. Deregistering a Handset ---------------------------41
10.1.9. Check Handset Transmission --------------------42
10.1.10. Check Handset Reception-------------------------42
10.1.11. Check Caller ID --------------------------------------42
11 Disassembly and Assembly Instructions ---------------43
11.1. Disassembly Instructions -------------------------------43
KX-TG4221N/KX-TG4222N/KX-TG4223N/KX-TG313SK/KX-TG4224N/KX-TG4225N/KX-TGA421N
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11.1.1. Base Unit ---------------------------------------------- 43
11.1.2. Handset ------------------------------------------------ 45
11.1.3. Charger Unit ------------------------------------------ 46
11.2. How to Replace the Handset LCD------------------- 47
12 Measurements and Adjustments -------------------------- 48
12.1. Equipment Required ------------------------------------ 48
12.2. The Setting Method of JIG----------------------------- 48
12.2.1. Connections (Base Unit) -------------------------- 48
12.2.2. Connections (Handset) ---------------------------- 49
12.2.3. How to install Batch file into P.C. ---------------- 50
12.2.4. Commands-------------------------------------------- 50
12.3. Adjustment Standard (Base Unit) -------------------- 51
12.3.1. Bottom View ------------------------------------------ 51
12.4. Adjustment Standard (Handset) ---------------------- 52
12.4.1. Component View ------------------------------------ 52
12.5. Things to Do after Replacing IC or X'tal ------------ 53
12.5.1. How to download the data ------------------------ 53
12.6. Frequency Table------------------------------------------ 55
13 Miscellaneous---------------------------------------------------- 56
13.1. How to Replace the Shield Case--------------------- 56
13.1.1. Preparation-------------------------------------------- 56
13.1.2. Caution------------------------------------------------- 56
13.1.3. How to Remove the Shield Case---------------- 56
13.1.4. How to Install the Shield Case ------------------- 57
13.2. How to Replace the LLP (Leadless Leadframe
Package) IC ----------------------------------------------- 58
13.2.1. Preparation-------------------------------------------- 58
13.2.2. Caution------------------------------------------------- 58
13.2.3. How to Remove the IC ----------------------------- 58
13.2.4. How to Install the IC -------------------------------- 59
13.2.5. How to Remove a Solder Bridge ---------------- 59
13.3. Terminal Guide of the ICs, Transistors and
Diodes ------------------------------------------------------ 60
13.3.1. Base Unit ---------------------------------------------- 60
13.3.2. Handset ------------------------------------------------ 60
14 Schematic Diagram -------------------------------------------- 61
14.1. For Schematic Diagram -------------------------------- 61
14.1.1. Base Unit (Schematic Diagram (Base
Unit_Main)) ------------------------------------------- 61
14.1.2. Handset
(Handset_Main))------------------------------------- 61
14.2. Schematic Diagram (Base Unit_Main)-------------- 62
14.3. Schematic Diagram (Base Unit_Operation) ------- 64
14.4. Schematic Diagram (Handset_Main) --------------- 66
15 Printed Circuit Board ------------------------------------------ 69
15.1. Circuit Board (Base Unit_Main) ---------------------- 69
15.1.1. Component View ------------------------------------ 69
15.1.2. Bottom View ------------------------------------------ 70
15.2. Circuit Board (Base Unit_Operation)---------------- 71
15.3. Circuit Board (Handset_Main) ------------------------ 73
15.3.1. Component View ------------------------------------ 73
15.3.2. Bottom View ------------------------------------------ 74
16 Exploded View and Replacement Parts List ----------- 75
16.1. Cabinet and Electrical Parts (Base Unit) ----------- 75
16.2. Cabinet and Electrical Parts (Handset)------------- 76
16.3. Cabinet and Electrical Parts (Charger Unit) ------- 77
16.4. Accessories and Packing Materials ----------------- 78
16.4.1. KX-TG4221N ----------------------------------------- 78
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(Schematic Diagram