Samsung SCX-4824XBH Service Manual page 119

Alignment & Troubleshooting
2) Defective MF DIAL
Description : The MF DIAL is not functioning.
1. Check if the telephone line is
Ass'y may
connected correctly.
be defective. Try to replace the
OPE Ass'y.
after checking the connection of
ON KEY is
pressed, check to catch
the Main PBA, try to replace the
The problem still persists, then
3. Check the connection of
in sequence.
Notes: Product supports the MF
type only.
4-67
Service Manual
Samsung Electronics