DOWNLOAD Panasonic KX-WT115RU Service Manual ↓ Size: 2.92 MB | Pages: 64 in PDF or view online for FREE

ORDER NO. KMS1011795CE

(for Russia)

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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

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15 Exploded View and Replacement Parts List -------- --59

15.1. Cabinet and Electrical Parts (Handset) ---------- --59
15.2. Cabinet and Electrical Parts (Charger Unit) ---- --60
15.3. Accessories and Packing Materials--------------- --61
15.4. Replacement Parts List ------------------------------ --62

15.4.1. Handset --------------------------------------------- --62
15.4.2. Charger Unit --------------------------------------- --64
15.4.3. Accessories and Packing Materials ---------- --64
15.4.4. Fixtures and Tools -------------------------------- --64

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1. Before servicing, unplug the AC power cord to prevent an electric shock.
2. When replacing parts, use only the manufacturer's recommended components.
3. Check the condition of the power cord. Replace if wear or damage is evident.
4. After servicing, be sure to restore the lead dress, insulation barriers, insulation papers, shields, etc.
5. Before returning the serviced equipment to the customer, be sure to perform the following insulation resistance test to prevent

the customer from being exposed to shock hazards.

• Repair service shall be provided in accordance with repair technology information such as service manual so as to

prevent fires, injury or electric shock, which can be caused by improper repair work.

1. When repair services are provided, neither the products nor their parts or members shall be remodeled. 
2. If a lead wire assembly is supplied as a repair part, the lead wire assembly shall be replaced. 
3. FASTON terminals shall be plugged straight in and unplugged straight out. 

• ICs and LSIs are vulnerable to static electricity.

1. Cover plastic parts boxes with aluminum foil.
2. Ground the soldering irons.
3. Use a conductive mat on worktable.
4. Do not grasp IC or LSI pins with bare fingers.

In the information below, Pb, the symbol for lead in the periodic table of elements, will refer to standard solder or solder that
contains lead.
We will use PbF solder when discussing the lead free solder used in our manufacturing process which is made from Tin (Sn),
Silver (Ag), and Copper (Cu).
This model, and others like it, manufactured using lead free solder will have PbF stamped on the PCB. For service and repair
work we suggest using the same type of solder.

• PbF solder has a melting point that is 50 

°F ~ 70 °F (30 °C ~ 40 °C) higher than Pb solder. Please use a soldering iron with

temperature control and adjust it to 700 

°F ± 20 °F (370 °C ± 10 °C).

• Exercise care while using higher temperature soldering irons.: 

Do not heat the PCB for too long time in order to prevent solder splash or damage to the PCB.

• PbF solder will tend to splash if it is heated much higher than its melting point, approximately 1100 

°F (600 °C).

• When applying PbF solder to double layered boards, please check the component side for excess which may flow onto the

opposite side (See the figure below).