Ricoh D158 Service Manual page 69

One-tray Paper Tray Unit Installation
8. Reinstall all trays.
9. Load paper into the paper feed unit.
10. Turn on the main power switch of the machine.
11. Adjust the registration for each tray ( p.4-105).
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Use SP1-002-004
12. Check the paper feed unit operation and copy quality.
D158/D159/D160/D161/D170 2-37 SM