No.4/5 mirror adjustment screw
1scale: 1mm
direction direction
Example: In the case of O.L value +1.0, this position is the reference position.
(2)Turn off/on the power to initialize the lens and No. 4/5 mirror unit. Check the focus in the normal ratio.
(3)If the focus is improper, perform the focus adjustment of the normal ratio as follows:
Screw A
(4)Turn off/on the power to initialize the lens and No. 4/5 mirror unit. Check the focus in the normal ratio again.
Resolution standards |
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| Copy center | Corners |
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Normal (100%) | 5.0 | 4.5 |
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Enlargement (200%) | 5.0 | 4.5 |
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Reduction (50%) | 3.2 | 2.8 |
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(Copy) | 4.5 | 2.8 | |
Check points | 5.0 | 3.2 | |
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5.6 |
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6.3 |
| 3.6 | |
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7.1 |
| 4.0 | |
8. 0 |
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9.0 |
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9.1 |
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9.2 |
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9.2 | 9.2 | 9.2 |
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2Perform the focus adjustment in the enlargement mode (200%).
(1)Make a copy of the test chart on an A4 or 8 1/2″ × 11″ paper.
(2)Check the resolution at the four corners and the center of the copy image. If the resolutions are within the specified range, the adjustment is completed. If not, adjust by shifting the rela- tive position of the zooming can to the drive cam.
(3)Turn off/on the power to initialize the lens and No. 4/5 mirror unit. Check the focus in the enlargement mode again.
Resolution standards |
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| Copy center |
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Normal (100%) | 5.0 |
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Enlargement (200%) | 5.0 |
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Reduction (50%) | 3.2 |
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| 2.8 |
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(Copy) |
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| Check points |
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| 5.0 |
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| 5.6 |
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| 3.6 |
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| 6.3 |
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| 4.0 |
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| 7.1 |
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| 8.0 |
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| 9.0 |
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| 9.1 |
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| 9.2 |
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| 9.2 | 9.2 | 9.2 |
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Zooming cam
Zooming cam gear
∗Do not move the zooming cam gear at this time.
3When the zooming can position is changed in 2, check the
focus in the normal mode again. If the resolutions are out of the specified range, perform the focus adjustment in the normal mode again.
*Repeat 2 and 3 until the proper focus is obtained in the normal mode and the enlargement mode (200%).
7 – 7
