Xerox 2510 Service Manual page 169

CQ 11 The Light Copy
(Overall)
(Continued)
Probable Cause
7. Image density i s not adjusted 7.
correctly.
I
Corrective Action
8.
Developer bias is not correct. 8.
(
9. (2510) Controller PWB
(2515) Perform the ADJ9.4 2515 lmage Density.
(2510) Adjust the position of the copy darkness lever.
Make a copy while checking the voltage where the
wire connects t o the magnetic roll. Developer bias
voltage
is 200 t. 20 VDC.
If
not, go t o the
CQ25
Developer Bias RAP.
(2515 W/O Tag 2,7, or 89): Enter the code [L], press
Start; enter the code [g], press Start; enter the code [J]
press Start, wait
2
minutes, enter [A] t o switch on the
main drive motor and the code [y] t o check the dry ink
concentration. Set meter t o measure 20 VDC. Connect
the black (-) lead t o ground and red ( + ) lead on pin 6
of connector P-3 1.
(251 5 WI Tag 2,7. or 89):
Enter [A] t o switch on the main drive motor and the
code [y] t o check the dry ink concentration. Set meter
to measure
20 VDC, Connect the black (-) lead t o
ground and red (
+
) lead on pin
6 of connector P-31.
251 5 W/ Tag 2 or 89 251
5
W/Tag 7
When
(y)
Pin 6
=
When(y) Pin6
=
= 6 9.4 VDC = 0 more than
1
1.8
=
5
10.3 VDC
= 4 10.6 = 1 11.8
=
3 11.6
=
2
11.4
=
2
14.75
= 3
11.0
=
4 10.6
=
5 10.2
= 6
9.8
=
7
9.4
= 8 9.0
=
9 8.6
Check the voltage at Pin 6 when (y) is at one of the values
shown above. Then press Stop and disconnect P-31. If the
voltage does not agree with what is shown above, and (y)
does not equal 8 with P-31 disconnected, replace the
Controller PWB. (Continued)
8/96
251012515
3-53
CQ 11 The Light
Copy
(Overall)