Canon PC 140 - Manual (Page 35)

Operating Procedure
33
2
Exposure recalibration switch
Darker
Lighter
Darker
Lighter
To make darker copies, move the switch upward.
To make lighter copies, move the switch downward.
If this does not produce the desired results,
follow the procedure below.
Adjusting the copy
exposure manually
When the auto exposure control mode fails to
produce a clear copy due to an unusual
original type, it may be necessary to adjust
the copy exposure manually depending on
the original.
Press the key to switch to manual
exposure control mode.
The A indicator lamp will no longer be lit.
Make sure the A
indicator goes out.
Darker Lighter
A AE
Normal Copying
Adjust the exposure level by sliding the
exposure adjustment lever.
To darken the exposure, slide the lever to
the right.
To lighten the exposure, slide the lever to
the left.
■ Guidelines for exposure level
adjustment
Ordinary Originals :Slide the lever to the
center
Originals with a Dark Background :
Lighten the exposure by
sliding the lever to the left
Light Originals : Darken the exposure by
sliding the lever to the
right
NOTICE:
• The exposure adjustment lever can not be used
while the auto exposure control mode is set.
The lever can only be used after the key has
been pressed and the A Indicator is no longer lit.
• When making color copies, lighten the copy
exposure manually to avoid the dark shading
that appears when color copies are made in the
auto exposure mode.