Ricoh D124-17 Service Manual page 848

2. Appendix 2: Service Program Mode
11 Position 11
12 Position 12
13 Position 13
14 Position 14
15 Position 15
Detailed Description for SP4993, SP4994
When a long original, or a special original (extremely thin or fragile) with a carrier sheet, is fed into the
scanner unit, this creates a load on the scanner when the scanned portion of the original behind the
scanner unit starts to sag. This can cause the original to slip in the original feed path and interfere with
smooth operation of the scanner motor. To correct this, the scanning speed can be switched at a desired
location in order to compensate for slippage of the special originals in the original feed path.
The scanning speed can be switched at designated points:
• Up to 15 switching points can be designated for a long original up to the maximum length of
15,000 mm (15 m or approximately 50 ft.).
• The first starting point (the reference point) is upstream of the CIS.
• The points can be entered with SP codes SP4993, SP4994, SP4995
• The speed of the scanner motor can be set in the range of ±10% where it can be adjusted in fine
increments (±0.1%)
Look at the settings above. Note that as more of the original feeds through the scanner unit, the speed of
the scanner motor is decreased slightly.
• If the speed is set at "0" at any point, the speed will be 100% the normal speed of the scanner
motor.
• If the image is to be magnified, the speed of the vertical motor is automatically adjusted to account
for the changes in scanning speed, so magnification will not be affected.
• The machine can also be set not to release the trailing edge of the original at the end of the scan
job. This prevents the original from falling on the floor. The trailing edge is held in the nip of the exit
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