Ricoh D158 Service Manual page 60

ARDF Installation (for D160/D161/D170)
16. Plug in and turn on the main power switch of the machine, and then check the ARDF
operation.
17. Make a full size copy. Check that the registrations (side-to-side and leading edge) and image
skew are correct. If they are not, adjust the registrations and image skew (see p.4-111 "ARDF
Image Adjustment" in the "Replacements and Adjustments" chapter).
D158/D159/D160/D161/D170 2-28 SM