Of 5 Charge Voltage Out Of Specification - Xerox 2510 Service Manual

I
OF 5 Charge Voltage Out of
Specification
Problem
Voltage not equal side-to-side
Voltage fluctuates
I
Voltage starts high and quickly drops below 600
volts
Cause
Bent or bowed corotron
Photoreceptor drum is not seated correctly on
the drum shaft.
Contaminates ozone filter, cooling fans not
operating, air manifold
is
blocked by the U-
shaped seal near the cleaning blade
Corrective Action
Replace the Charge Corotron (PL 9.2)
Remove the xerographic module, and check
that the
drum
is
fully seated
on
the drum shaft
end plates.
Replace the Ozone filter (PL
9.3)
Replace the Cooling Fan (PL
9.3)
Clear the obstruction blocking the manifold.
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Voltage fluctuates from 800 t o 1300 VDC
I
Voltage is constant, but is 1300 VDC or
higher
Defective corotron, defective photoreceptor
drum, light leak, defective high voltage power
supply
Shorting or arcing Precharge or Detack
Corotron
Ground connection on the electrometer is not
connected or is not functioning
Failed Precharge or Detack corotron.
Repair or replace the Charge Corotron (PL 9.2)
Replace the Photoreceptor Drum (PL
9.1)
Ensure that the covers are i n place while doing
the electrostatic adjustments.
Refer t o the CQ 26 HVPS Rap (Sect 3)
Clean, repair, or replace the defective
corotron (PL 8.6, PI 9.2)
Ensure that the electrometer is grounded
correctly.
Clean, repair, or replace the defective
corotron
(PL
8.6, PI 9.2).
8/96
25101251 5
2-81
OF 5
Charge
Voltage Out of Specification