Dell 1135N Service Manual - Page 139
Defective MF DIAL - support
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Alignment and Troubleshooting 2) Defective MF DIAL Description : The MF DIAL is not functioning. 1. Check if the telephone line is connected correctly. 2. Wile the BUTTON KEY is pressed, check for a CLICK sound. If you cannot hear the OHD CLICK sound, the OPE Ass'y may be defective. Try to replace the OPE Ass'y. If you can hear a click sound, replace the main board. Notes : Product support the MF DIAL type only. Service Manual 4-66
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Alignment and Troubleshooting
4-66
Service Manual
2) Defective MF DIAL
Description :
The MF DIAL is not functioning.
1. Check if the telephone line is
connected correctly.
If you cannot hear the OHD
CLICK sound, the OPE Ass'y may
be defective. Try to replace the
OPE Ass'y.
If you can hear a click sound,
replace the main board.
Notes : Product support the MF
DIAL type only.
2. Wile the BUTTON KEY is
pressed, check for
a CLICK sound.