Ricoh FT8680 Service Manual page 237

OPTICS
[A]
11. Adjust the lamp heater position so that the lamp intensity sensor fiber
optics cable can be properly installed. Confirm that the transparent part of
the lamp is at the center of the heater opening (see figure).
12. Reinstall the end of the fiber optics cable [A] and fix the cover [B]
(1 screw).
13. Reassemble the machine.
14. Perform the process control initial setting in the SP test mode
(see Service Program section).
[B]
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