Ricoh FT6645 Manual page 237

OPTICS
[A]
NOTE: Make sure that the blister [A] on the lamp points towards the
reflector opening (left side of the copier) as shown.
6. Reassemble the copier.
7. Turn on the main switch and enter SP mode, then perform the process
control data initial setting ( SP Adjustment – PAGE 1).
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23 April 1993