Xerox Phaser 8400 Service Manual

4-42 Phaser 8400/8500/8550 Color Printer
Check Drum Menu
Y-axis Encoder
Uses the sine and cosine sum data to determine the characteristics of the encoder disk and
encoder sensors.
R# Definition
Typical
Value
(8400)
Typical
Value
(8500/
8550) Actions
0 Sin Sum Data Offset
(sin sum units)
150000 to
800000
-68000 to
160000
Reports average of the max and
min Sin Sum average amplitude
values.
1 Sin Sum Data
Amplitude (sin sum
units)
-11000 to
350000
-68000 to
160000
Reports difference between the
max and min Sin Sum average
amplitude values.
2 Amplitude Ripple
(Sun Sum units)
25 to 75 2.0 to 12 Reports the ripple in the Sin Sum
amplitude values. Excludes the
neighborhood of the Home notch
(a distance of +/- 50 samples
from the Home notch min
location.
3 Max Position Ripple
(mpts)
-140000
to 275000
24000 to
52000
Reports the max variation in the
reported delta position between
samples over the revolution.
4 Sin max delta
position
-.3 to 5 -.3 to 5 Reports the max value of the
diference between the rotation
position of any adjacent sin sum
peaks
5 Home Notch Depth
Ratio (none)
0 to 13 68 to 80 Reports the ratio between the
notch bottom amplitude and the
max amplitude value as reflected
in the Sin Sum data.
6 Home Notch Width
(sec)
50 to 90 720 to
960
Reports the width of the Home
notch at 99% full depth as
reflected in the Sin Sum data.
7 Home Notch
Symmetry (none)
250 to
550
35 to 65 Reports the ratio of the Home
notch width sections as bisected
by a vertical from the notch min
as reflected in the Sin Sum data.
8 Cosine Sum Data
Offset (cosine sum
units)
90000 to
450000
-125000
to 200000
Reports average of the max and
min Cosine Sum average
amplitude values.
9 Cosine Sum Data
Amplitude (cosine
sum units)
300000 to
500000
300000 to
500000
Reports difference between the
max and min Cosine Sum
average amplitude values.

Xerox Phaser 8400 Specifications

General

Brand	Xerox
Model	Phaser 8400
Category	Printer
Language	English