Toshiba 1550 Service Handbook page 28

2 Automatic adjustment of automatic exposure
Sequence
Be sure to adjust manual exposure (100%) beforehand. (Note1)
2-0
Place the adjustment chart on the original glass. (Note 2)
2-1
Enter code 49 using the digital keys and then press the Print key.
2-2
* During automatic adjustment, the carriage will shift and the lens
and mirror will move in accordance with the reproduction ratio.
The exposure lamp will flash four times.
* End of automatic adjustment is indicated by return of the display
to test mode.
Note 1. As automatic adjustment of automatic exposure is performed on the basis of manual exposure, be sure to
conduct manual exposure beforehand.
2. Use white Ledger or A3 copy paper as the test chart.
3. When adjustment must be performed in accordance with the user's request, perform by referring to (4), to
be described later.
4. Avoid opening the original cover, pressing keys on the control panel or turning the power OFF, during
automatic adjustment.
When changing the variable width of the key for manual exposure in accordance with the user's request, carry out 3
and 4, described below.
3 Changing the amount of variation in the light image density
Sequence
3-1 Input code "9" using the digital keys and press the "Print" key.
3-2 Use the "Zoom" key to increase the value to lighten the image (and vice versa).
3-3 Press the "Interrupt" key to store the value.
3-4 Press the "Energy saver" key and make a test copy.
3-5 If the image density of the test copy is not satisfactory, repeat operations 3-1 through 3-4.
4 Changing the amount of variation in the dark image density.
Sequence
4-1 Input code "10" using the digital keys and press the "Print" key.
4-2 Use the "Zoom" key to increase the value to lighten the image (and vice versa).
4-3 Press the "Interrupt" key to store the value.
4-4 Press the "Energy saver" key and make a test copy.
4-5 If the image density of the test copy is not satisfactory, repeat operations 4-1 through 4-4.
Oct. 1995 © TOSHIBA CORP.
Operation
Operation
Operation
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Display after operation (typical)
Refer to 1
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1550 ADJUSTMENT