Xerox 2510 User Manual

CQ 25 Developer Bias RAP - 251 5
Switch off and unplug the copier
Ensure that the developer bias connector,
124,
is seated correctly on the high voltage
power supply (HVPS) and the developer bias
lead
is connected to the developer bias clip.
Set the meter to measure
+ 400 VDC.
Connect the
(-) to the GND test point on the
HVPS and the
( +) to the developer bias clip.
Plug in and switch on the copier. Cheat the
AC interlock switch and the upper rear cover
interlock switch. Press
Start; immediately
select the
Light lnput mode.
The voltogo at the doveloper
bias clip
changes from npproximatoly
0 VDC to
approximately
225 VDC when the copier
reaches
L3.
The voltage at J25-8 of the High Voltage
Power Supply is approximately
6 VDC
when the copier goes from
L9 to LO.
Switch off the copier and go to FLAG
2 and check the wiring for on open
circuit.
I
If there is no open circuit, replace the
Control PWB (PL 1.1).
Switch off the copier and disconnect the
bias lead from the bias clip.
Ensure that the bias lead does not come
in contact with
the copier frame.
Switch on the copier. Press
Start;
immediately select the Light lnput mode.
The voltage at the developer bias clip
changes from approximately
0 VDC to
approximately
225 VDC when the copier
reaches
L3.
Go to FLAG 1 and check the
developer bias lead for a short circuit
to frame or an open circuit.
If there
is no short circuit or open
circuit, replace the high voltage
power supply and perform the
Electrostatic Series (2510
ADJ 9.2;
251
5 9.3).
Check the developer housing for a short
circuit to frame.
A
Press Stop. Wait 15 seconds. Press Start; then
immediately select
Dark Input.
The voltage at the deveioper bias clip will
change from
0 VDC to 225 VDC when the
copier reaches
L3. The voltage will remain at
200 VDC for a maximum of 45 seconds after
the two beeps, and then drops to
0 VDC.
Check contrast control in run mode only.
Refer to the chart on page
3-79
Replace the high voltage power supply
and perform the Electrostatic Series
(25
10 ADJ 9.2; 25 15 ADJ 9.3).
Go to the copy quality RAP that directed you
here and conlinue lroublesl~oo~ing the copy
quality problem.
7/92
CQ 25 Developer Bias RAP 3-92 251 5

Xerox 2510 Specifications

General

Brand	Xerox
Model	2510
Category	Copier
Language	English