Ricoh D124-17 Service Manual page 741

2 Absolute Humidity L
[0 to 9/0/1]
3 Standby Time
[0 to 240/0/1]
1952 Skew Adjustment DFU
1. When the leading edge of the paper feeds past the registration roller, paper feed stops and the
DRESS sensor reads the position of the right edge of the paper (S1).
2. If S1 (the amount of skew) is greater than ±10 mm, the roll feed motor rewinds the paper onto the
roll and out of the machine, and then the operator must load the paper again.
-or-
If the amount of skew is less than ±10 mm the paper is fed 100 mm (L) past the S1 detection point
and then paper feed stops. The vertical motor rotates forward at 100 mm/s while the roll feed
motor rotates in reverse at 35 mm/s. This straightens and stretches the paper in the paper path.
3. The DRESS sensor reads the position of the right edge again (S2) (100 mm upstream of S1).
4. The machine calculates the amount of skew between S1 and S2:
|S1 – S2|/L x 100
• If the value is more than ±5 mm, the roll feed motor rewinds the paper onto the roll and out of the
machine, and then the operator must load the paper again.
• If the value is less than ±5 mm, the correction is done again.
1. The correction is done twice. If the skew cannot be corrected to ±3 mm, the roll feed motor rewinds
the roll, and then the operator must load the paper again.
1 Skewed Value
Sets the value for the second reading after correction.
[0 to 1/0.5/0.01 %]
2 Skewed Value on Ejecting
Sets the value of the third reading after correction.
[1 to 10/3/0.01 %]
3 Measuring Length
The length of paper fed between the first and second reading by the DRESS sensor.
[50 to 300/100/1 mm]
SP1000
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