Xerox Nuvera 100, Service Manual

Page: 13 / 304

General Information 1-13
CAUTION
The actual position of some printer assemblies, such as the
printhead or the cap/wipe/purge assembly, cannot be ascertained at
all times. The printer records, in NVRAM, where it last positioned
such assemblies each time it moves them. If, after power-down or a
power interruption, the assemblies are manually repositioned, the
printer erroneously assumes that the assemblies are in the position
it last left them. This assumption can result in damage to the printer
when it tries to position the assemblies. For example, the printhead
could be tilted forward and crash into the raised cap/wipe/purge
assembly.
Before turning on the printer, ensure the printhead is tilted forward,
centered in front of the drum and the cap/wipe/purge assembly is in
the retracted, home position. The tilt cam gear should be
disengaged from the gear drive train.
Electric clutches and solenoids are used by the printer to engage
rollers as needed to move paper through the printer as well as start
some print processes. Refer to Figure 1-9.
Cap/Wipe/Purge
clutch
Transfix
solenoid
Drum maintenance
cam clutch
Upper feed
roller clutch
Pick
clutch
Air valve
solenoid
0388-08
Figure 1-9. Solenoids and Clutches on the Print Engine