Fujitsu M4099D Reference Manual page 40

Rotate the lamp a half turn so that
the two terminals on each end
align with the slot on the lamp
socket and remove the lamp from
the back-side lamp unit.
Back-side lamp
Install the lamp unit using the two
guide grooves and rails.
Connect the connector of the
back-side lamp unit.
Close the side cover securely,
otherwise the cover open error
may occur.
Rail
Install a new lamp in the back-side
lamp unit. Insert the terminals of
the lamp into the socket and rotate
the lamp. Be sure that the clear
Clear portion
portion is positioned as shown left,
otherwise black stripes may appear
in the scanned image.
Guide grooves (one hidden)
Lamp
Rail
3-5