Datamax-O'Neil S-Class User Guide - Manual (Page 29)

S-Class 21
Power-Up and Off-Line Mode Button Functions
(Off-Line, as denoted by the On-Line Indicator being ‘Off’)
 F2:
Three functions:
(a) Press momentarily to advance ticket stock, or to
manually load ticket stock.
(b) Press and hold during power-up to print a
Configuration and Test Pattern Ticket, and enter
Character Dump mode.
(c) Press and hold to enter the Operational Database
Modification mode; see Section 4.3 for details.
 F3:
Two functions:
(a) Press and hold to enter the Start of Print and
Cut/Tear Adjustments; see Section 4.2 for
details.
(b) Press momentarily to print an Internal Test
Ticket; see Section 3.4.3.
 F1 + F3:
Press these simultaneously to perform a Warm Reset
and return to the on-line mode.
 F1 + F2:
Press these simultaneously to print a Test Pattern
Ticket; see Section 3.4.2.
 F2 + F3:
Press these simultaneously to print a Configuration
Ticket; see Section 3.4.1.
 F1 + F2 + F3:
Press and hold these during power-up to reset the
printer to the default settings; see Section 3.5.2.