Ricoh FT5535 Service Manual page 46

7. Connect the red two-pin connector [F] at the rear of the copier to the heater's
connector [C] (red).
8. Place the harness [G] under the optical rail [H] as shown.
9. Make sure that the scanner drive belt and mirrors do not touch the heater
harness while they are functioning. Also, make sure that the heater harness
does not interfere with the light path to the ADS sensor board.
NOTE: Tell the customer that even when the copier main switch is turned off,
the copier power cord should be plugged in. Otherwise, the optics
anti-condensation heater will not function.
FT5535/4527/4522 3-22 FSM