Ricoh M281 Series Service Manual page 539

Abbreviation
FS Fusing sensor
PFFS1 Paper feed sensor 1
PFFS2 Paper feed sensor 2
PFFS3 Paper feed sensor 3
PFFS4 Paper feed sensor 4
*1 Optional paper feed unit
SP 5300/5310
Abbreviation
BPES Bypass paper end sensor
DUS1 Duplex sensor 1
SM
Name Abbreviation
PS2
*1
RS1
*1
RS2
*1
RS3
*1
Name Abbreviation
PFPS1
PFPS2
6-101
Jam Detection
Name
Paper end sensor 2
Registration sensor 1
Registration sensor 2
Registration sensor 3
Name
*1
Paper end sensor 1
*1
Paper end sensor 2
D255/D256/M281/M282