Panasonic KX-T2375MXW User manual

© 2001 Kyushu Matsushita Electric Co., Ltd. All
rights reserved. Unauthorized copying and
distribution is a violation of law.
KX-T2375MXW
Integrated Telephone System
White Version
(for Asia, Middle Near East and other areas)
Telephone Equipment
ORDER NO. KM40108849C3

1 LOCATION OF CONTROLS 3
2 DISPLAY 4
3 CONNECTION 5
3.1. Connecting the Handset/Telephone Line Cord 5
3.2. Connecting a Communication Device 5
4 SETTINGS 6
4.1. Selecting the Dialing Mode 6
4.2. Time Adjustment 7
4.3. Setting the LCD Contrast 8
4.4. Selecting the Ringer Volume 8
5 SPECIAL FEATURES 9
5.1. FLASH Button 9
5.2. Selecting the Flash Time 9
5.3. Setting the Pin Code 10
5.4. Dial Lock 11
5.5. Call Restriction 12
5.6. How to Release the Establishment of Dial Lock 13
6 DISASSEMBLY INSTRUCTIONS 14
7 HOW TO REPLACE FLAT PACKAGE IC 15
7.1. Preparation 15
7.2. Procedure 15
7.3. Modification Procedure of Bridge 15
8 CPU DATA 16
8.1. IC801 16
8.2. Speakerphone IC Data 17
9 TERMINAL GUIDE OF IC STRANSISTORS AND DIODES 18
10 BLOCK DIAGRAM 19
11 BLOCK DIAGRAM (IC 1) 20
11.1. Communication ICs 20
12 MODULE BLOCK DIAGRAM 21
12.1. MODULE BLOCK DIAGRAM 21
12.2. CONNECTOR PIN ASSIGNMENT 21
13 CIRCUIT OPERATION 22
13.1. Bell Detector Circuit 22
13.2. Line Interface 22
13.3. Speakerphone Circuit 23
13.4. Telephone Line Interface 24
13.5. Tone Detect 25
13.6. Inializing Circuit 26
14 TROUBLE SHOOTING GUIDE 27
14.1. Service Hints 27
14.2. Pulse Dialing Problems 27
14.3. Tone Dialing Problems (Hnadset) 28
14.4. No Ringing Sound When Ring Signal is Input. 28
15 CABINET AND ELECTRICAL PARTS LOCATION 29
16 ACCESSORY AND PACKING MATERIALS 30
17 REPLACEMENT PARTS LIST 31
17.1. Base Unit 31
17.2. ACCESSORIES AND PACKING MATERIALS 33
18 FOR SCHEMATIC DIAGRAM (SCHEMATIC DIAGRAM) 34
18.1. MEMO 35
19 SCHEMATIC DIAGRAM 36
20 CIRCUIT BOARD AND WIRING CONNECTION DIAGRAM 39
20.1. Component Vie 39
20.2. Flow Solder Side View 40
CONTENTS
Page Page
2
KX-T2375MXW

1 LOCATION OF CONTROLS
3
KX-T2375MXW

2 DISPLAY
4
KX-T2375MXW

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.
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.
5
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.
6
KX-T2375MXW

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.
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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.
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KX-T2375MXW

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.
·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.
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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.
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KX-T2375MXW