FUJITSU fi-4120C2 - Manual (Page 86)

70
Does the display remain blank
even after you push any button
on the operator panel?
NO
The scanner operation is
normal.
YES
Does the display remain blank
even after trunning ON the scanner
again?
YES
NO
Scanner operation is
normal.
Symptom 2 Indication on Function No. display goes out.
If you cannot solve the problem
after taking measures, check the
items in "5.3 Items to check before
contacting the dealer where you
bought the scanner" and contact
the dealer or an authorized
FUJITSU service provider.