KX-TGJ310RU, KX-TGJ312RU, KX-TGJ320RU, KX-TGJ322RU, KX-TGJA30RU - Panasonic Telephone Service Manual (repair manual). Page 3

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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 ------------------------------ 5

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. Block Diagram (Base Unit_RF Part) ------------------ 9
4.3. Circuit Operation (Base Unit) --------------------------10

4.3.1. BBIC (Base Band IC: IC501) ---------------------10
4.3.2. Flash Memory (IC601)(for KX-TGJ320

only) -----------------------------------------------------10

4.3.3. FLASH MEMORY (IC502)-------------------------10
4.3.4. Power Supply Circuit/Reset Circuit-------------- 11
4.3.5. Telephone Line Interface---------------------------13
4.3.6. Transmitter/Receiver--------------------------------14

4.4. Block Diagram (Handset)-------------------------------15
4.5. Circuit Operation (Handset)----------------------------16

4.5.1. Outline --------------------------------------------------16
4.5.2. Power Supply Circuit/Reset Circuit--------------16
4.5.3. Charge Circuit ----------------------------------------16
4.5.4. Battery Low/Power Down Detector--------------16
4.5.5. Speakerphone ----------------------------------------16

4.6. 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. VES area data in Flash ---------------------------------24

8.2.1. Scope ---------------------------------------------------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
9.1.7. Registering a Handset to the Base Unit--------36
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. Check Bell Reception -------------------------------38
9.1.13. Check TAM Operation (for KX-TGJ320

only) -----------------------------------------------------38

9.2. Troubleshooting by Symptom (Base 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 ------------------------------------------------ 48
10.1.3. Charger Unit ------------------------------------------ 49

11 Measurements and Adjustments -------------------------- 50

11.1. Equipment Required ------------------------------------ 50
11.2. The Setting Method of JIG----------------------------- 50

11.2.1. Connections (Base Unit) -------------------------- 50
11.2.2. How to install Batch file into P.C. ---------------- 51
11.2.3. Commands-------------------------------------------- 51

11.3. Adjustment Standard (Base Unit) -------------------- 52

11.3.1. Bottom View ------------------------------------------ 52

11.4. The Setting Method of JIG (Handset)--------------- 53

11.4.1. Connections ------------------------------------------ 53
11.4.2. How to install Batch file into P.C. ---------------- 54
11.4.3. Commands-------------------------------------------- 54

11.5. Adjustment Standard (Handset) ---------------------- 55

11.5.1. Component View ------------------------------------ 55

11.6. Things to Do after Replacing IC or X'tal ------------ 56

11.6.1. How to download the data ------------------------ 56

11.7. RF Specification ------------------------------------------ 61

11.7.1. Base Unit ---------------------------------------------- 61
11.7.2. Handset ------------------------------------------------ 61

11.8. How to Check the Handset Speaker or

Receiver ---------------------------------------------------- 62

11.9. Frequency Table (MHz)--------------------------------- 62

12 Miscellaneous---------------------------------------------------- 63

12.1. How to Replace the LLP (Leadless Leadframe

Package) IC ----------------------------------------------- 63

12.1.1. Preparation-------------------------------------------- 63
12.1.2. Caution------------------------------------------------- 63
12.1.3. How to Remove the IC ----------------------------- 63
12.1.4. How to Install the IC -------------------------------- 64

12.2. How to Replace the Flat Package IC --------------- 65

12.2.1. Preparation-------------------------------------------- 65
12.2.2. How to Remove the IC ----------------------------- 65
12.2.3. How to Install the IC -------------------------------- 66
12.2.4. How to Remove a Solder Bridge ---------------- 66

12.3. How to Replace the Shield Case--------------------- 67

12.3.1. Preparation-------------------------------------------- 67
12.3.2. Caution------------------------------------------------- 67
12.3.3. How to Remove the Shield Case---------------- 67
12.3.4. How to Install the Shield Case ------------------- 68

12.4. Terminal Guide of the ICs, Transistors and

Diodes ------------------------------------------------------ 69

12.4.1. Base Unit ---------------------------------------------- 69
12.4.2. Handset ------------------------------------------------ 69

13 Schematic Diagram -------------------------------------------- 70

13.1. For Schematic Diagram -------------------------------- 70

13.1.1. Base Unit (Base Unit (Main)) --------------------- 70
13.1.2. Handset (Handset (Main)) ------------------------ 70

13.2. Base Unit (Main) ----------------------------------------- 72

13.2.1. KX-TGJ310 ------------------------------------------- 72
13.2.2. KX-TGJ320 ------------------------------------------- 74

13.3. Schematic Diagram (Base Unit_Operation) ------- 76