Toshiba 1550 Service Handbook page 26

b If the focus is inadequate and the lateral reproduction ratio is enlarged:
Enter a larger mirror-position value (code 61).
c If the focus is adequate but the lateral reproduction ratio is reduced:
Enter a larger lens-position value (code 60).
d If the focus is adequate but the lateral reproduction ratio is increased:
Enter a smaller lens-position value (code 60).
Notes: 1. Moving either the lens or the mirror changes both the focus and the lateral reproduction ratio.
However, the lens-position value mainly changes the lateral reproduction ratio and the mirror
position value mainly changes the focus.
2. First adjust the focus, then the lateral reproduction ratio and check the focus again.
3. If the lateral reproduction ratio is not precisely adjusted (within ±0.5%), the focus cannot be
correctly adjusted either.
4. The focus in the center of the image has more margin than that of any of the four corners of
the image due to the characteristics of the lens.
5. For 200% and 50% reproduction ratios, adjustment of the normal focus (mirror position)
makes the lateral reproduction ratio optimal, making it unnecessary to be adjusted.
[B] 200% focus and lateral reproduction-ratio adjustment
(1) Make a 200% copy and check for the correct focus and lateral reproduction ratio.
(2) When the focus and the lateral reproduction ratio are inadequate, re-enter the values of codes 62
and 63 in the AJ "05" mode in the same way as for 100%.
[C] 50% focus and lateral reproduction ratio adjustment
(1) Make a 50% copy and check for the correct focus and lateral reproduction ratio.
(2) When the focus and the lateral reproduction ratio are inadequate, re-enter the values of codes 64
and 65 in the AJ "05" mode in the same way as for 100 %.
1.8 Adjustment of Lateral Misplacement of the Lens Unit
The lens unit has adjustable mechanism.
However, as the adjustment is performed at the time of shipping from the factory, no further adjustment
is needed.
Oct. 1995 © TOSHIBA CORP. July 1996 1 - 23
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1550 ADJUSTMENT