Machine Test - Samsung SCX-4824XBH Service Manual

4.1.5.4 Machine Test

SWITCH TEST
each time you press a key.
MODEM TEST
Use this feature to hear various transmission signals to the telephone line from the modem and to check the
modem. If no transmission signal sound is heard, it means the modem part of the main board malfunctioned.
DRAM TEST
ROM TEST
PATTERN TEST
Using this pattern printout, you can check if the printer mechanism is functioning properly.
It is needed in the production progress. Service person doesn't need to use it.
SHADING TEST
Device). If the copy image quality is poor, perform this function to check the condition CCD unit.
< Method >
2. Push the SET UP button then an image will be
scanned.
print out.
4. If the printed image is different to the image, the
CCD is defect.
NOTICE : When you test CCD, make sure that the
cover is closed.
Service Manual
Alignment & Troubleshooting
4-17
Samsung Electronics