Xerox DocuPrint C55 Service Manual page 81

Delta - this is the difference between the Control Point
and the Value measured. The delta will vary but rarely
exceeds 20.
Process Voltage
Transfer Bias - This is the voltage applied to the Transfer
Drum.
The Paper default is 1305V and varies depending on
the temperature and relative humidity. In high humidity
conditions, the value is decreased and in low humidity
conditions, the value is increased.
The Paper bias varies between 1000-1200V.
The Transparency default is 2000V and varies
depending on the temperature and relative humidity.
The voltage varies for each of the 4 colors when
running transparencies.
Black default is 2000V
Cyan default is 2200V
Magenta default is 1400
Yellow default is 2600
As the humidity changes the voltage is also changed to
compensate.
Developer Bias - The default bias is 400V. The four
developer bias voltages are set during the Process
Control cycle at power on. The voltage range is from -
250 to -550 volts. In general, the higher the bias the
darker the print. If the values get too high or too low, the
charge voltage may change to compensate.
Magenta voltage tends to be higher. These values will
also change when the color balance procedure is
performed.
DocuPrint NC60
Xerox DocuPrint NC60 Color Laser Printer
Diagnostic Sheet
General Information
Serial Number:
Software Version:
Engine Software Version: 94
Total System Memory:
Base:
J3
J4
J5
J6
Binary Lossy Counter:
Contone Lossy Counter:
Relative Humidity:
Temperature:
Fuser Temperature:
Print Counts
Total
Black
Cyan
Magenta
Yellow
Consumable Usage Status
Fuser:
Print Drum:
Fuser Oil:
Black Developer:
Color Developers
Cyan
Magenta
Yellow
Adjustments
Top Margin
Left Margin
Cleaning Cycle
TC Patch Control
Fast Black
Extra Toner
Cyclic toneup
OHP Mode
The Process Control Status
Black
Cyan
Magenta
Yellow
Calibration
2/99
3-25
Density Rate Set Points
xxx-xxxxxx
Black
1.80-39 Ι NL.ROM
Cyan
Magenta
64
Yellow
32 MB
Color Balance
32MB
Gamma Set Points
0 MB
0 MB
Black
0 MB
Cyan
0
Magenta
0
Yellow
20
Toner Concentration
107
Set Point
157
Black
Cyan
xxxxx
Magenta
xxxxx
Yellow
xxxxx
Control Point
xxxxx
Black
xxxxx
Cyan
Magenta
xxx
Yellow
xxx
Value
Okay
Black
xxx
Cyan
Magenta
xx
Yellow
xx
Delta
xx
Black
Cyan
Magenta
0.0
Yellow
0.0
Adjustments
Never
Off
Transfer Bias
On
Paper
On
High
On
Normal
None
Low
OHP
High
OK
Normal
OK
Low
OK
Developer Bias
OK
Black
OK
Cyan
Magenta
Yellow
T D C
HE OCUMENT OMPANY
IMAGE QUALITY SPECIFICATIONS
90
90
90
90
Default
41
61
64
62
95
112
110
102
103
112
103
102
103
105
92
103
0
7
11
-1
1000 Volts/105 volts
1000 Volts/105 volts
1200 Volts/105 volts
2200 Volts/200 volts
2000 Volts/200 volts
2200 Volts/105 volts
265 Volts
345 Volts
345 Volts
341 Volts
TEST PATTERNS