Toshiba 1550 Service Handbook page 27

1.9 Exposure Adjustment
(1) While pressing keys "0" and '5" simultaneously, turn the power supply ON. The display shows "AJ"
and indicates that the machine is in adjustment mode.
(2) Press the automatic exposure key to set the machine to manual exposure, and then select the
center step.
(3) Adjust the exposure in accordance with the procedure shown in the chart below.
Adjustment
sequence
1 Manual exposure
2 Automatic adjustment of automatic exposure
*3 Light (max.)
*4 Dark (min.)
5 Manual photo exposure
* Make adjustment only when requested by the user.
When individual adjustment is required for manual, automatic and manual photo exposure in response to
a request from the user, follow procedure (4).
1
Adjustment of 100% manual exposure
Sequence
1-1 Input code "1" using the digital keys , and press the "Print" key.
1-2 [When density is high]
Increase the numerical value, using the "Zoom" key. (Note 2)
[When density is low]
Reduce the numerical value, using the "Zoom" key. (Note 2)
1-3 Press the "Interrupt" key and enter the numerical value in the
memory.
1-4 Press the "Energy saver" key and make a test copy (one)
1-5 If the image of the test copy is not satisfactory, repeat
operations 1-1 through 1-4.
Note 1. Zone A: When the "Zoom" key is pressed, it increases (or decreases) in increments of one.
2. The numerical value in Zone A can be changed by using the digital keys as well as the "Zoom" key.
3. As adjustment of 154%, 50% and 200% manual exposure has already been performed, readjustment is
not required. However, if individual adjustment is requested by the user, conduct the relevant adjustment
in accordance with procedure (4), described later.
1550 ADJUSTMENT
Exposure mode
Operation
1 - 24
Reproduction
Adjustment code
ratio
100%
50 ~ 200% 49
100% or
appropriate
reproduction
ratio
10
100% 14
Display after operation (typical)
120
129
180
AJ
Oct. 1995 © TOSHIBA CORP.
1
9
(Note 1)
Zone A