Technical Bulletin PAGE: 2/11
Reissued:04-Apr-14
Model: Aries-P1.5/C1.5, AG-P1/C1
Symptom
40mm wide dark bands appear at 314mm intervals
Cause
Normally, the exhaust fans behind the PCDU that operate for a prescribed time after
completing a job could ventilate the ozone in approximately two hours. However, when
the machine is run under most, if not all, of the following conditions, ozone emission
increases and causes ozone to accumulate easily.
- Charge Corona exceeds 100K
- The machine is operated in a low temperature/low humidity environment, and the
correction values are applied to the charge corona unit according to the
environment
- The machine is left unused overnight in a low temperature/humidity environment
with its power turned off
Dark Bands could appear on the first job in the morning when meeting the above
conditions.
Solution
First step: Set the machine so that the exhaust fans continue to operate while the
machine power is turned on. (You may want to ask for customer approval when
applying this setting to the SP.)
How to activate the exhaust fans
1. From the control panel, go to [User Tools] – [System Settings] – [Timer Settings], and set the
Panel Off Timer to “Off”.
2. Change the settings for the ozone and developer unit fans in the following SPs:
SP1-940-03, -04; default 56 (=60min) 1270 (=21 hours)
3. Change the low power mode fuser temp in the following SPs:
SP1-202-01, -02; default 110 (=110 degrees C) 0 (=0 degree C)
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