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GENERAL PROCEDURES
DocuPrint C55/C55mp/[NC60]
6-11
BACKGROUND DIAGNOSTICS
BACKGROUND DIAGNOSTICS
The Background diagnostic mode is used
during manufacturing to set the basic printer
parameters and should rarely require
adjustment in the field.
The Background Diagnostic Mode is used to :
Initialize the following:
•
Gamma Sensor A (adjust)
•
Gamma Sensor I (calibration)
•
Gamma Sensor C (correction)
•
Black Developer (Detect K TC)
•
Color Developer (Detect C,M,Y, TC)
•
Both Developers (Detect K,C,M,Y, TC)
•
Drum
•
Fuser
Set the Control Values for the following:
•
Plain Paper Transfer Current
•
Transparency Transfer Current
•
Gamma Transfer Current
•
K Developer Bias
•
C Developer Bias
•
M Developer Bias
•
Y Developer Bias
•
Process Control (Off, On)
•
Fuser Motor Speed (GP 3.4)
•
Paper Feed Motor Speed
Check and set the fuser temperature.
ENTERING THE BACKGROUND DIAGNOS-
TIC MODE:
1. Enter Normal Diagnostics. (
Menu [3]
,
Enter [7]
+ Power on).
2. Enter Special Diagnostics (while PCU
DIAG MODE XX is displayed, press
On-
Line [0]
then press
Enter [7]
. Release
both keys at the same time).
3. Enter Background Diagnostics (while PCU
DIAG MODE SPECIAL is displayed, press
Media Server [2]
then press
Previous
[5]
. Release both keys at the same time).
4. The Message Display will indicate:
DIAG BACK GROUND
5. Press the
Menu [3]
key to step through
the diagnostic routines.
EXITING FROM THE BACKGROUND DIAG-
NOSTIC MODE:
1. When DIAG BACK GROUND is displayed
on the Message Display, press the
Form
Feed [1]
key to exit from Background
diagnostics to Normal diagnostics.
2. Press
Form Feed [1]
again to exit from
Normal Diagnostics.
3. Or, switch the power off wait 10 seconds
and then switch the power on.
INITIAL
This Diagnostic routine is used to initialize the
following printer parameters:
•
Gamma Sensor A (adjust density)
•
Gamma Sensor I (calibrate sensor)
•
Gamma Sensor C (calculate sensor
correction)
•
Black Developer (set current black TC as
Black toner setpoint)
•
Color Developer (set current color TC as
Color toner setpoint)
•
Both Developers (set current TC as toner
setpoint for all four colors)
•
Drum (reset drum counter)
•
Fuser (reset fuser counter)
1. Enter Background diagnostics and press
the
Menu [3]
key until
INITIAL GAMMA_A
is displayed on the Message Display.
2. Use the
Previous [5]
/
Next [6]
keys to
select the parameter to be initialized.
3. To initialize the item Insert a sheet of paper
into the bypass slot to actuate the Bypass
Switch, then press the
Form Feed [1]
key.
The On Line LED will switch on and then
off when the change is stored.
4. When the initialization routine is compete
press
Previous [5]
/
Next [6]
key to select
the next parameter to be initialized.
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 ...