Panasonic KX-T2373MXW User manual

© 2001 Kyushu Matsushita Electric Co., Ltd. All
rights reserved. Unauthorized copying and
distribution is a violation of law.
KX-T2373MXW
Integrated Telephone System
White Version
(for Asia, Middle Near East and other areas)
Telephone Equipment
ORDER NO. KM40108848C3

1 LOCATION OF CONTROLS 3
2 CONNECTION 4
2.1. Connecting the Handset/Telephone Line Cord 4
2.2. Connecting a Communication Device 4
3 SETTINGS 5
3.1. Selecting the Dialing Mode 5
3.2. Selecting the Ringer Volume 5
4 SPECIAL FEATURES 6
4.1. FLASH Button 6
4.2. Selecting the Flash Time 6
4.3. Setting the Pin Code 7
4.4. Dial Lock 8
4.5. Call Restriction 9
4.6. To cancel the call restriction 9
4.7. How to Release the Establishment of Dial Lock 10
5 DISASSEMBLY INSTRUCTIONS 11
6 HOW TO REPLACE FLAT PACKAGE IC 12
6.1. Preparation 12
6.2. Procedure 12
6.3. Modification Procedure of Bridge 12
7 CPU DATA 13
7.1. IC801 13
7.2. Speakerphone IC Data 14
8 TERMINAL GUIDE OF IC STRANSISTORS AND DIODES 15
9 BLOCK DIAGRAM 16
10 BLOCK DIAGRAM (IC 1) 17
10.1. Communication ICs 17
11 CIRCUIT OPERATION 18
11.1. Bell Detector Circuit 18
11.2. Line Interface 18
11.3. MODULE BLOCK DIAGRAM 19
12 TROUBLE SHOOTING GUIDE 23
12.1. Service Hints 23
12.2. Pulse Dialing Problems 23
12.3. Tone Dialing Problems (Hnadset) 24
12.4. No Ringing Sound When Ring Signal is Input. 24
13 CABINET AND ELECTRICAL PARTS LOCATION 25
14 ACCESSORY AND PACKING MATERIALS 26
15 REPLACEMENT PARTS LIST 27
15.1. Base Unit 27
15.2. ACCESSORIES AND PACKING MATERIALS 29
16 FOR SCHEMATIC DIAGRAM (SCHEMATIC DIAGRAM) 30
16.1. MEMO 31
17 SCHEMATIC DIAGRAM 32
18 CIRCUIT BOARD AND WIRING CONNECTION DIAGRAM 35
18.1. Component Vie 35
18.2. Flow Solder Side View 36
CONTENTS
Page Page
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KX-T2373MXW

1 LOCATION OF CONTROLS
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KX-T2373MXW

2 CONNECTION
2.1. 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-T2373MXW.
2.2. 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.
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KX-T2373MXW

3 SETTINGS
3.1. 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.
3.2. 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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4 SPECIAL FEATURES
4.1. 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.
4.2. 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-T2373MXW

4.3. 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.
Please write down your Pin code. If you forget your Pin code, consult your nearest Panasonic service center.
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KX-T2373MXW

4.4. 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.
4.4.1. 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 .
4.4.2. To Cancel the Dial Lock
Follow steps 1 through 3 above again.
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4.5. 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.
4.5.1. 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.
4.6. To cancel the call restriction
Follow steps 1 through 5. In step 6, press to cancel call restriction and press .
·A long beep will sound and the unit will return to the standby mode.
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4.7. How to Release the Establishment of Dial Lock
After this procedure, you will be able to establish a new password.
How to release the establishment of dial lock.
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