Panasonic KX-T2375MXW Service Manual

ORDER NO. KM40108849C3

Telephone Equipment

KX-T2375MXW

Integrated Telephone System

White Version (for Asia, Middle Near East and other areas)

KX-T2375MXW

CONTENTS

Page Page

1 LOCATION OF CONTROLS 3 2 DISPLAY 3 CONNECTION

3.1. Connecting the Handset/Telephone Line Cord

3.2. Connecting a Communication Device

4 SETTINGS

4.1. Selecting the Dialing Mode

4.2. Time Adjustment

4.3. Setting the LCD Contrast

4.4. Selecting the Ringer Volume

5 SPECIAL FEATURES

5.1. FLASH Button

5.2. Selecting the Flash Time

5.3. Setting the Pin Code

5.4. Dial Lock

5.5. Call Restriction

5.6. How to Release the Establishment of Dial Lock

6 DISASSEMBLY INSTRUCTIONS 7 HOW TO REPLACE FLAT PACKAGE IC

7.1. Preparation

7.2. Procedure

7.3. Modification Procedure of Bridge

8 CPU DATA

8.1. IC801

8.2. Speakerphone IC Data

9 TERMINAL GUIDE OF IC STRANSISTORS AND DIODES 10 BLOCK DIAGRAM 11 BLOCK DIAGRAM (IC 1)

10 11 12 13

14 15

15 15 15

16 17

18 19 20

4 5

5 5

6 7 8 8

9 9

11.1. Communication ICs

12 MODULE BLOCK DIAGRAM

12.1. MODULE BLOCK DIAGRAM

12.2. CONNECTOR PIN ASSIGNMENT

13 CIRCUIT OPERATION

13.1. Bell Detector Circuit

13.2. Line Interface

13.3. Speakerphone Circuit

13.4. Telephone Line Interface

13.5. Tone Detect

13.6. Inializing Circuit

14 TROUBLE SHOOTING GUIDE

14.1. Service Hints

14.2. Pulse Dialing Problems

14.3. Tone Dialing Problems (Hnadset)

14.4. No Ringing Sound When Ring Signal is Input.

15 CABINET AND ELECTRICAL PARTS LOCATION 16 ACCESSORY AND PACKING MATERIALS 17 REPLACEMENT PARTS LIST

17.1. Base Unit

17.2. ACCESSORIES AND PACKING MATERIALS

18 FOR SCHEMATIC DIAGRAM (SCHEMATIC DIAGRAM)

18.1. MEMO

19 SCHEMATIC DIAGRAM 20 CIRCUIT BOARD AND WIRING CONNECTION DIAGRAM

20.1. Component Vie

20.2. Flow Solder Side View

21 21

22 22 23 24 25 26

27 27 28 28

29 30 31

31 33

36 39

39 40

1 LOCATION OF CONTROLS

KX-T2375MXW

2 DISPLAY

3 CONNECTION

3.1. Connecting the Handset/Telephone Line Cord

After connection, lift the handset to check for a dial tone.

· Use only a Panasonic Handset for the KX-T2375MXW.

KX-T2375MXW

3.2. Connecting a Communication Device

If you connect a communication device (computer, modem, fax, answering machine, etc.) to the telephone line, you can connect it through this unit using the DATA jack.

After connecting the handset and telephone line cord, connect the communication device telephone line cord to the DATA jack.

· Make sure the communication device is not in use before using this unit (making calls, storing phone numbers in memory etc.) or the communication device may not operate properly.

KX-T2375MXW

4 SETTINGS

4.1. Selecting the Dialing Mode

You can select the dialing mode by programming. If you have touch tone service, set to "Tone". If rotary or pulse service is used, set to "Pulse". Your phone comes from the factory set to "Tone".

Make sure that a call is not put on hold.

4.2. Time Adjustment

You can select AM/PM or 24-hour clock by programming.

Make sure that a call is not put on hold.

KX-T2375MXW

4.3. Setting the LCD Contrast

You can select the LCD contrast level from 1 to 4 by programming. Your phone comes from the factory set to 3.

Make sure that a call is not put on hold.

4.4. Selecting the Ringer Volume

You can select the ringer volume to HIGH, LOW or OFF. Your phone comes from the factory set to HIGH.

5 SPECIAL FEATURES

5.1. FLASH Button

Pressing allows you to use special features of your host PBX such as transferring an extension call or accessing special telephone services (optional) such as call waiting.

5.2. Selecting the Flash Time

The flash time depends on your telephone exchange or host PBX. You can select the following flash times: "80, 90, 100, 110, 200, 250, 300, 400, 600, 700 ms (milliseconds)". Your phone comes from the factory set to "600 ms".

Make sure that a call is not put on hold.

KX-T2375MXW

· If you are connected via a PBX, a longer flash time may be necessary to use PBX functions (transferring a call, etc.). Consult your PBX installer for the correct setting.

KX-T2375MXW

5.3. Setting the Pin Code

A 4-digit Pin Code (Personal Identification Number) prevents unauthorized persons from using your unit. The Pin Code is required for the dial lock and call restriction to be set or canceled. The factory preset Pin code is "1111".

Make sure that a call is not put on hold.

KX-T2375MXW

5.4. Dial Lock

You can prevent others from making a call to any number except the one pre-programmed in the memory of the EMERGENCY button. Once you locked the dialing buttons, even emergency numbers cannot be dialed. Only incoming calls are accepted until the dial lock is canceled.

Before using this feature, we recommend storing an emergency number in the memory of the EMERGENCY button. Even if the dialing buttons are locked, the number stored in the button can be dialed.

· If you choose not to program emergency numbers, but plan to use the dial lock, any number programmed into the EMERGENCY button can be accessed.

5.4.1. To Set the Dial Lock

You can use the following features while the dialing buttons are locked.

· Dialing a number you programmed into the memory of the EMERGENCY button.

· Adjusting the handset and speakerphone volumes.

· Muting the conversation.

· Answering the second call by pressing

5.4.2. To Cancel the Dial Lock

Follow steps 1 through 3 above again.

· “

“ will disappear, and the unit will return to the standby mode.

KX-T2375MXW

5.5. Call Restriction

You can prevent the unit from dialing phone numbers beginning with specified digit(s) (1 digit or 2 digits). Phone numbers with the restricted leading digits cannot be dialed out.

5.5.1. To Set the Call Restriction

Make sure that a call is not put on hold.

· If your unit is connected to a PBX, this function may not operate. Contact your PBX supplier for more information. When dialing a phone number with the restricted leading digit(s), the dialed number will flash on the display, but not dialed out.

+ 27 hidden pages