KX-WT115RU - Panasonic PBX Service Manual (repair manual). Page 2

2

PAGE

PAGE

1 Safety Precautions -----------------------------------------------4

1.1. For Service Technicians ----------------------------------4

2 Warning --------------------------------------------------------------4

2.1. About Lead Free Solder (PbF: Pb free) --------------4

2.1.1. Suggested PbF Solder -------------------------------5

2.2. Battery Caution ---------------------------------------------5
2.3. Discarding of P. C. Board --------------------------------5

3 Specifications ------------------------------------------------------6
4 Technical Descriptions------------------------------------------7

4.1. Block Diagram (Handset) --------------------------------7
4.2. Block Diagram (Handset_RF Part) --------------------8
4.3. Circuit Operation (Handset) -----------------------------9

4.3.1. Outline----------------------------------------------------9
4.3.2. Power Supply Circuit/Reset Circuit ---------------9
4.3.3. Charge Circuit ---------------------------------------- 10
4.3.4. Battery Low/Power Down Detector ------------- 10
4.3.5. Speakerphone---------------------------------------- 10

4.4. Circuit Operation (Charger Unit) --------------------- 11
4.5. Signal Route----------------------------------------------- 12

5 Location of Controls and Components------------------ 13

5.1. Handset----------------------------------------------------- 13

6 Installation Instructions--------------------------------------- 14

6.1. Charger Connection ------------------------------------- 14
6.2. Battery ------------------------------------------------------ 14

6.2.1. Battery Installation ---------------------------------- 14
6.2.2. Charging the Battery-------------------------------- 14

7 Operating Instructions ---------------------------------------- 15

7.1. Soft Keys --------------------------------------------------- 15
7.2. Handset Setting Menu Layout ------------------------ 15
7.3. Key Lock---------------------------------------------------- 16
7.4. Selecting the Display Language---------------------- 16
7.5. Display ------------------------------------------------------ 17
7.6. Operation Outline ---------------------------------------- 18
7.7. Main Menu ------------------------------------------------- 18
7.8. Character Mode Table ---------------------------------- 19
7.9. For Service Hint ------------------------------------------ 19

8 Service Mode ----------------------------------------------------- 20

8.1. Key Operation--------------------------------------------- 20
8.2. Service Registration ------------------------------------- 22
8.3. How to Clear User Setting (Handset Only) -------- 24
8.4. Deregistering only Handset---------------------------- 24

9 Troubleshooting Guide---------------------------------------- 25

9.1. Troubleshooting Flowchart----------------------------- 25

9.1.1. Check Power ----------------------------------------- 25
9.1.2. Check Battery Charge------------------------------ 26
9.1.3. Check Link -------------------------------------------- 27
9.1.4. Check the RF part----------------------------------- 29
9.1.5. Check Handset Transmission -------------------- 30
9.1.6. Check Handset Reception ------------------------ 30

9.2. Troubleshooting by Symptom (Charger Unit) ----- 31

9.2.1. Check Point (Charger Unit) ----------------------- 31

9.3. Troubleshooting by Symptom (Handset) ----------- 31

9.3.1. Check Point (Handset) ----------------------------- 31

10 Disassembly and Assembly Instructions--------------- 34

10.1. Disassembly Instructions------------------------------- 34

10.1.1. Handset ------------------------------------------------ 34
10.1.2. Charger Unit ------------------------------------------ 35

10.2. How to Replace the Handset LCD------------------- 36

11 Measurements and Adjustments -------------------------- 37

11.1. Equipment Required ------------------------------------ 37
11.2. The Setting Method of JIG ---------------------------- 37

11.2.1. Connections (Handset) ---------------------------- 37
11.2.2. How to execute Test command------------------ 38
11.2.3. Commands ------------------------------------------- 38
11.2.4. Download Manual----------------------------------- 39

11.3. Adjustment Standard (Charger Unit)---------------- 43

11.3.1. Bottom View------------------------------------------ 43

11.4. Adjustment Standard (Handset) --------------------- 44

11.4.1. Component View------------------------------------ 44

11.5. Things to Do after Replacing X'tal------------------- 45

11.5.1. How to download the data ------------------------ 45

11.6. RF Specification------------------------------------------ 45

11.6.1. Handset ----------------------------------------------- 45

11.7. How to Check the Handset Speaker or

Receiver---------------------------------------------------- 46

11.8. Frequency Table (MHz) -------------------------------- 46

12 Miscellaneous --------------------------------------------------- 47

12.1. How To Replace a Flat Package IC----------------- 47

12.1.1. Preparation ------------------------------------------- 47
12.1.2. Removal Procedure -------------------------------- 47
12.1.3. Procedure--------------------------------------------- 47
12.1.4. Removing Solder From Between Pins--------- 47

12.2. How to Replace the LLP (Leadless Leadframe

Package) IC and IC ground plate-------------------- 48

12.2.1. Preparation ------------------------------------------- 48
12.2.2. Caution ------------------------------------------------ 48
12.2.3. How to Remove the IC ---------------------------- 48
12.2.4. How to Install the IC-------------------------------- 48
12.2.5. How to Remove a Solder Bridge (Doesn't

apply to IC ground plate.) ------------------------- 49

12.3. How to Replace the Shield Case -------------------- 50

12.3.1. Preparation ------------------------------------------- 50
12.3.2. Caution ------------------------------------------------ 50
12.3.3. How to Remove the Shield Case --------------- 50
12.3.4. How to Install the Shield Case------------------- 50

12.4. Terminal Guide of the ICs, Transistors and

Diodes ------------------------------------------------------ 51

12.4.1. Handset ----------------------------------------------- 51

13 Schematic Diagram -------------------------------------------- 51

13.1. For Schematic Diagram-------------------------------- 51

13.1.1. Handset (Schematic Diagram 

(Handset_Main)) ------------------------------------ 51

13.1.2. Charger Unit (Schematic Diagram 

(Charger Unit))--------------------------------------- 51

13.2. Schematic Diagram (Handset_Main) --------------- 52
13.3. Schematic Diagram (Handset_LED)---------------- 54
13.4.  Schematic Diagram (Charger Unit) ---------------- 54

14 Printed Circuit Board------------------------------------------ 55

14.1. Circuit Board (Handset_Main)------------------------ 55

14.1.1. Component View------------------------------------ 55
14.1.2. Bottom View------------------------------------------ 56

14.2. Circuit Board (Handset_LED) ------------------------ 57
14.3. Circuit Board (Charger Unit) -------------------------- 58

14.3.1. Component View------------------------------------ 58
14.3.2. Bottom View------------------------------------------ 58