5056-XXX
RFID
Radio frequency identification
RH
Relative humidity
RIP
Raster image processor
ROM
Read only memory
ROS
Read-only storage
SEF
Short edge feed
SOL
Solenoid
SRAM
Static random access memory
UPR
Used parts replacement
USB
Universal serial bus
V ac
Volts alternating current
V dc
Volts direct current
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Service Manual