Cq 25 Developer Bias Rap - 2510 - Xerox 2510 Service Manual

CQ 25 Developer Bias RAP
-
2510
A B C
A
Switch off and unplug the copier.
Go to Flag
1
and check the developer
Press
Stop.
Wait 15 seconds. Press
Start;
bias lead for a short circuit to frame
then immediately select
Dark Input.
Ensure that the developer bias connector, J24, is
or an open circuit.
seated correctly on the high voltage power
The voltage goes from
+
400 VDC
to
+
300
supply (HVPS) and the developer bias lead is
If there is no short circuit or open VDC
when the copier goes from Standby to
connected to the developer bias clip.
circuit, replace the high voltage Ready.
power supply and perform the Y
N
Set the meter to measure
+
400 VDC.
electrostatic series (AD1 9.2).
I
Replace the high voltage power supply
Check the developer housing for a short
and perform the electrostatic series (ADJ
Connect the (-) to the GND test point on the
circuit to frame.
9.2).
HVPS and the
(
+
) to the developer bias clip.
A
.
.
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 voltage at the developer bias clip goes from
approximately
+
400 VDC
to approximately
+
200 VDC when the copier goes from warmup
to Ready.
N
The voltage at J25-8 of the High Voltage
Power Supply goes from approximately
+
14.7 VDC to
+
4.9 VDC when the copier
goes from warmup to Ready.
Y N
Switch off the copier and go to FLAG 2
and check the wiring for an open circuit.
If there i s no open circuit, replace the
Control PWB (PL 1.1 B).
I
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 lead goes
from
+400 VDC
to
+200 VDC
when the
copier goes from Standby to Ready.
Go to the copy quality RAP that directed you
here and continue troubleshooting the copy
quality problem.
i
1. 1
VOLTAGE
(
,25
POWER
SUPPLY
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CQ 25 Developer Bias RAP