Xerox Phaser 8500 - Page 49

Phaser 8400/8500/8550/8560 Color Printer Service Manual 2-17
Theory of Operation
W
arn
i
ng
Always keep your fingers away from the drum drive system; it uses a
closed-loop servo drive system, which is inherently dangerous. Since the
motor speeds up if it senses the drum drive system slowing down, fingers
caught in the drum belts and gears can be severely injured.
s8500-020
Y-Axis Motor
Tension Spring
Fan
CW
CCW
Y-Axis
Encoder
Drum Temperature Sensor
Si
ng
l
e
R
e
d
uct
i
on
B
e
l
t
D
r
i
ve
Pulley
Air Direction
8400
8500/8550/
8560