Ricoh fax3310l Basic Features page 474

A.2 Reset to Factory Defaults
by the three quick green flashes followed by the alternating amber and green indications
(once per second rate). You should then turn off power and shift the OP2 jumper to the
CUST or OFF position (opposite of the FACT or ON position). The unit operates normally
when you turn the power on again.
A-2 Jumper Settings