Alignment & Troubleshooting
Service Manual
4-
17
Samsung Electronics
4.1.
5.4
Machine Test
SWITCH TEST
8VHWKLVIHDWXUHWRWHVWDOONH\VRQWKHRSHUDWLRQFRQWUROSDQHO7KHUHVXOWLVGLVSOD\HGRQWKH/&'ZLQGRZ
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
8VHWKLVIHDWXUHWRWHVWWKHPDFKLQH¶V'5$07KHUHVXOWDSSHDUVLQWKH/&'GLVSOD\
,IDOOPHPRU\LVZRUNLQJQRUPDOO\WKH/&'VKRZV2.!!
ROM TEST
8VHWKLVIHDWXUHWRWHVWWKHPDFKLQH¶65207KHUHVXOWDQGWKHVRIWZDUHYHUVLRQDSSHDULQWKH/&'GLVSOD\
)/$6+9(59
(1*,1(9(59
PATTERN TEST
Using this pattern printout, you can check if the printer mechanism is functioning properly.
It is needed in the production progress. Service person doesn’t need to use it.
SHADING TEST
7KHIXQFWLRQLVWRJHWWKHRSWLPXPVFDQTXDOLW\E\WKHVSHFL¿FFKDUDFWHURIWKH&&'&KDUJH&RXSOHG
Device). If the copy image quality is poor, perform this function to check the condition CCD unit.
< Method >
6HOHFWWKH>$'-8676+$',1*@DWWKH7(&+02'(
2. Push the SET UP button then an image will be
scanned.
$IWHUWKHVFDQ&&'6+$',1*352),/(ZLOOEH
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.
