Check Drum Menu - Xerox Phaser 8400 Service Manual

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