Ricoh Aficio 551 Copy Reference Manual page 237

If you select a document which requires a password, the "Input the Pass-
word" window appears. Enter your password using the number keys, and
press the [OK] key. To delete the value entered, press the [Clear] or {Clear/
Stop} key. To cancel a selected document, press the [Cancel] key.
C
Repeat step B if you want to select more than one document.
D
Press the [Delete] key.
A confirmation dialog box appears.
E
Press the [Delete] key to delete it.
Note
To cancel the delete operation, press the [Stop] key.
Deleting Saved Documents
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