Technical information

~OPERATIONSAND TIMING
4. Adjustment
The following adjustments should be made when
the AE sensor or adjustment PCB has been re-
placed; starl with adjustment of the AE referente
point and then AE slope, and make sure both adjust-
ments are made without fail.
@ Adjusting the AE Referente Point
1) Remove the adjustment cover from the rear of
the left cover.
2) Switch the power ON.
* Wait untilthe WAITstate isoverand theCOPY
READY indicator is green.
3) Place an NB-3 Test Sheet or NA-2 Test Sheet,
and close the copyboard cover.
4) Press the push switch (SWI ; service switch) on
the adjusting PCB.
- ‘0’ will be indicated on the copy counter on the
control panel.
- If the indication is not’O’, enter’o’on the tenkey
pad on the control panel.
5) Press the SORT/GROUP key on the control
panel.
- The scanner moves forward to the AE meas-
urement point, and the scanning lamp goes
ON.
Note:
The scanning lamp remains ON for about 8
sec; to turn it ON once again, press the SORT/
GROUP key, and press the key once gain
after the operation stops.
6) Adjust VR1 (AE ref.) on the adjusting PCB so
that the copy counter on the control panel indi-
cates ‘20’.
TestSheet Newspaper
Figure 3-32
7) Press the SORT/GROUP key after making ad-
justments.
- The scanning lamp goes OFF, and the scan-
ner returns to the home position.
“(2) AE slope adjustment” should be made
continuously.
AE adjustment can be completed by perform-
ing”(1) AE referencepoint adjustment” though
“(2) AE slope adjustment”.
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COPYRIGHT 0 1992 CANON ING. CAHON ffP2l20/2020 AEV.I JAN. 1992 PRINTEO IN JAPAH IIMPAIME AU JAPONI