Dell 1135N Service Manual - Page 138

Fax & Phone Problems

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Alignment and Troubleshooting 4.2.6 Fax & Phone Problems 1) No Dial Tone Description : While on-hook button is pressed, there is no dial tone. 1. Check if the telephone line cord is connected to TEL LINE correctly. If the telephone cord is abnormal, then try to correct the connection of tel line code. 2. Check if the SPEAKER is connected correctly. 3. Check if it makes CLICK sound while OHD key is pressed. Check the Speaker connection, and try to replace it. If you can't hear the OHD click sound, the OPE and Main board may be defective. Try to replace the OPE Ass'y and Main board in sequence. Service Manual 4-65

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Alignment and Troubleshooting
4-65
Service Manual
4.2.6 Fax & Phone Problems
1) No Dial Tone
Description :
While on-hook button is pressed, there is no dial tone.
1. Check if the telephone
line cord is connected to
TEL LINE correctly.
If the telephone cord is abnormal,
then try to correct the connection
of tel line code.
Check the Speaker connection,
and try to replace it.
2. Check if the SPEAKER
is connected correctly.
3. Check if it makes CLICK
sound while OHD key is pressed.
If you can't hear the OHD click
sound, the OPE and Main board
may be defective.
Try to replace the OPE Ass'y
and Main board in sequence.