![background image](http://html.mh-extra.com/html/xerox/docuprint-c55/docuprint-c55_service-manual_883399203.webp)
2/99
GENERAL PROCEDURES
DocuPrint C55/C55mp/[NC60]
6-5
NORMAL DIAGNOSTICS
OPTICAL SYS TEST
This Diagnostic routine is used to check the
operation of the Raster Output Scanner
(ROS).
1. Enter Normal diagnostics and press the
Menu [3]
key until
OPTICAL SYS TEST
is
displayed on the Message Display.
2. Press the
Form Feed [1]
key to start the
test.
3. The
Form Feed
lamp will flash during the
test.
4. The Polygon Motor and the Laser Diode
will switched on for 30 seconds. The On
Line lamp will come on when the
Horizontal Sync signal is generated.
5. To stop the test press the
Media Server
[2]
key.
VOL TEST MAIN
This Diagnostic routine is used to check the
Charge, Transfer and Developer Bias
voltages.
1. Enter Normal diagnostics and press the
Menu [3]
key until
VOL TEST MC
is
displayed on the Message Display.
2. Press the
Next [6]
/
Previous [5]
keys until
the Message Display steps to the voltage
to be tested.
3. Press the
Form Feed [1]
key to start the
test. The On Line LED will flash.
4. Use the
Next [6]/Previous [5]
keys to
change the voltage value.
5. To stop the test press the
Media Server
[2]
key.
Voltage
Default
Range
Comments
MainMC
(Charge)
NA
NA
Output fixed
(No Display)
TC Bias
(Transfer)
1800
1500-
3000
One step change
= apx. 11 volts
DV BIAS
*(Max Bias)
594
298-600
One step change
= apx. 20 volts
KD BIAS
(Black Bias)
400
298-600
One step change
= apx. 20 volts
CD BIAS
(Cyan Bias)
400
298-600
One step change
= apx. 20 volts
MD BIAS
(Magenta Bias)
400
298-600
One step change
= apx. 20 volts
YD BIAS
(Yellow Bias)
400
298-600
One step change
= apx. 20 volts
* This is the bias that is supplied to the roll
when the color is not being developed.
MOTOR TEST
This Diagnostic routine is used to test the
operation of the motors.
1. Enter Normal diagnostics and press the
Menu [3]
key until
MOTOR TEST
is
displayed on the Message Display.
2. Press the
Form Feed [1]
key to start the
test.
3. The following motors will operate:
•
Main Motor
•
Paper Feed Motor
•
Fuser Motor
•
Developer Motor
•
Color Toner Motor
•
Black Toner Motor (Note 1)
•
Polygon Motor
4. To stop the test press the
Media Server
[2]
key.
NOTE 1: Remove the Rear Cover to view the
Black Toner Motor gears. Enter the MOTOR
TEST program, then press the
On Line [0]
key to run the motor. Release the
On Line [0]
key to stop the motor Do not run the Black
Toner motor for more than 2 seconds or
overtoning will occur.
Summary of Contents for DocuPrint C55
Page 14: ...SERVICE CALL PROCEDURES 2 99 NOTES 1 6 DocuPrint C55 C55mp NC60 Notes ...
Page 56: ...OTHER FAULTS RAPs 2 99 NOTES 2 42 DocuPrint C55 C55mp NC60 NOTES ...
Page 76: ...IMAGE QUALITY SPECIFICATIONS 2 99 NOTES 3 20 DocuPrint C55 C55mp NC60 NOTES ...
Page 130: ...REPAIRS ADJUSTMENTS 2 99 NOTES 4 42 DocuPrint C55 C55mp NC60 NOTES ...
Page 216: ...GENERAL PROCEDURES 2 99 NOTES 6 18 DocuPrint C55 C55mp NC60 Notes ...
Page 252: ...GENERAL PROCEDURES 2 99 NOTES 6 54 DocuPrint C55 C55mp NC60 NOTES ...
Page 272: ...GENERAL PROCEDURES 2 99 NOTES 6 74 DocuPrint C55 C55mp NOTES ...
Page 274: ...GENERAL PROCEDURES 2 99 NOTES 6 76 DocuPrint NC60 NOTES ...