Toshiba 1550 Service Handbook page 25

1.7 Mirror and Lens Adjustment
Checking and adjustment regarding the mirrors and the lens should be made by using the following
procedure:
Focus/lateral reproduc-
tion-ratio adjustment
(60) ~ (65)
Slanted image
adjustment
Original scale
Note: Do adjustment steps in the dotted-line boxes, as required.
Focus/lateral reproduction-ratio adjustment AJ: Codes 60 - 65
When the lens is replaced or when the focus or the lateral reproduction ratio is not correct, the following
adjustment data need to be re-entered:
Lens position data (100%)
Mirror position data (100%)
Lens position data (200%)
Mirror position data (200%)
Lens position data (50%)
Mirror position data (50%)
Adjustment should be done as follows:
Lens/mirror position values
100 %
(60)
Mirror position value
50 %
(65)
Normally, adjustment steps in the dotted-line boxes are unnecessary.
[A] 100% focus and lateral reproduction-ratio adjustment
(1) Make an actual-sized copy and check for the correct focus and lateral reproduction ratio; if adjust-
ment is necessary, re-enter adjustment data as described below:
a If the focus is inadequate and lateral reproduction ratio is smaller:
Enter a smaller mirror-position value (code 61).
1550 ADJUSTMENT
Carriages 1/2
adjustment
Carriages 1/2
Focus/lateral reproduc-
tion-ratio adjustment
(60) ~ (65)
(AJ"05" mode, code 60)
(AJ"05" mode, code 61)
(AJ"05" mode, code 62)
(AJ"05" mode, code 63)
(AJ"05" mode, code 64)
(AJ"05" mode, code 65)
100 %
(61)
Lens position value
50 %
(64)
1 - 22
Inclined focus
adjustment
Lens unit
Mirror unit
Lateral deviation
adjustment
Lens unit
Allowable input value Center value
0~40
0~40
0~40
0~40
0~40
0~40
Mirror position value
200 %
(63)
Oct. 1995 © TOSHIBA CORP.
Image distortion
Mirrors 1/2
20
20
20
20
20
20
Lens position value
200 %
(62)