Flash and grid steps setting
1. Turn ON the main switch and wait for the copy stand-by condition.
2. Select a paper tray that has A3 or 11"x17" paper. If there is no tray with such paper, adjust
the side fences and back fence of one paper tray at the A3 size position.
3. Place a sheet of A3 (or larger) white paper on the exposure glass, near the original scale.
(This is to prevent change of reflectivity from the white-and-black pattern.)
4. Access service tool [4-01].
5. Press the Process Control OFF key, then press the ON key to reset all shift steps to 0.
6. Press the Start key, and press the Clear/Stop key immediately after the 18th flash. The ma-
chine stops after 20 flashes. (This is because the flash output compensation is applied just
after flashing 10 times and the grid output compensation is applied just after 20 times.)
7. Read the flash and grid shift steps (compensated values). When the values are 0 ± 2, the
check is completed.
8. Add (or reduce) the shifted-up (or down) value to (or from) the flash and grid setting steps us-
ing the value change keys (▲▼) on the process control OFF screen.
NOTE
The maximum flash and grid shift steps for one time compensation
is 3. Therefore, if the shift-up (or down) value is 3, you have to
follow the step below.
9. Make sure that no compensation is applied to the flash and grid setting steps (no change of
the flash and grid shift steps) as follows:
1) Select the [4-01] screen. (Be sure that all shift steps are 0.)
2) Press the Start key, and press the Clear/Stop key immediately after the 38th flash. The
machine stops after 40 flashes.
3) Read the flash and grid shift steps. If they are not 0 ± 2, add (or reduce) the shifted-up (or
down) value to (or from) the flash or grid setting steps. Then, repeat the above step.
Bias step setting
1. Read the bias shift step (compensated value) on the [4-01] screen. When the value is 0 ± 2,
the check is completed.
2. Add (or reduce) the shifted-up (or down) value to (or from) the bias setting step using the
value change keys (▲▼) on the process control OFF screen.
1 July 1994 Setting B
5-9
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