Fujitsu fi-4860C Operator's Manual page 174

Symptom2
Has it beena while since you turned
on the scanner ? (15 to 60 minutes)
Does the LCD remain blank even after
the scanner has been turned on again?
Contact an authorized FUJITSU
Scanner service provider.
(* ) Press any button except Power button. The Power button will not work to wake up
the scanner. Pressing the power button more than 2 seconds will turn off the power.
The operator panel LCD goes out.
YES
NO
NO
YES
Scanner is in Power save
mode. Press any button (except
Power button) on the operator
panel to wake it up.
The scanner operation is
normal.