CQ
11
The Light
Copy
(Overall)
(Continued)
Probable Cause
7. Image density
is
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 to the magnetic roll. Developer bias
voltage
is
200
t.
20
VDC.
If
not, go to 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] to switch on the
main drive motor and the code [y] to check the dry ink
concentration. Set meter to measure 20 VDC. Connect
the black
(-)
lead to ground and red
(
+)
lead on pin
6
of connector P-3 1.
(251
5
WI
Tag 2,7. or
89):
Enter
[A]
to switch on the main drive motor and the
code [y] to check the dry ink concentration. Set meter
to measure
20
VDC,
Connect the black
(-)
lead to
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)
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