Final Operation Check; Changing The Image Settings; Light Distribution Adjustment; Exposure Adjustment - Toshiba 1550 Service Manual

D. Final Operation Check
Making copies in both the cassette and bypass feeding modes, check the following items:
• Check for correct paper feeding from both the cassette and sheet bypass.
• Check for proper copy image.
• Check for correct displaying of the control panel lamps and the correct operation of the keys.
Note: Dispose of the packing materials properly.
E. Changing the Image Settings

1. Light distribution adjustment

(1) With the exposure set at a darker point,
make a copy of the test chart and check for
uneven light distribution.
(2) If necessary, make adjustment in the fol-
lowing manner:
a) Turn off the power and unplug the
power cord plug. Then, remove the
right-hand top glass holder (2 screws)
and the glass.
b) Loosening the screw of the adjustment
plate corresponding with the position of
the uneven light distribution, adjust the
plate:
If you move it toward the left, copy im-
age becomes darker and if you move it
toward the right, copy image becomes
lighter.
c) If the rear side of the copy is too dark
and gradually lighter toward the front,
adjust the adjustment plates as shown
on the right (lower).
d) Make a copy of the test chart and check
for the correct image density.

2. Exposure adjustment

2.1 Adjustment of manual exposure (100%)
(1) Turn off the power of the machine. While
pressing keys
ously, turn on the power switch.
• Check that the "AJ" mode is shown.
(2) Press the Auto Exposure
switch to manual exposure. (Check that
the Auto Exposure lamp has gone off.)
(3) Using the exposure keys, set the exposure
level at the center point.
1550/1560 UNPACKING PROCEDURE
0 and 5 simultane-
key to
Rear side
Front side
Rear side
Front side
ENERGY
SAVER
INTERRUPT
18 - 6
DUAL PAGE
COPY
CASSETTE
LIGHT AUTO DARK
PHOTO
(Image Mode)
@ @ @ @ @
Mar. 1998 © TOSHIBA