Sharp AR-280 Service Manual page 112

(DEN-A)
Used to set the timing for the RRC ON timing (paper timing) set with EEC-B.
RRC ON timing = (RRC-B) - Lead edge void set value (DEN-A)
When this adjustment value is changed, the print image position for the paper position is changed. As a result, the
lead edge void area is also changed.
When the set value is increased, the RRC ON timing is advanced and the lead edge void area becomes greater.
When the set value is changed by 1, the lead edge void area is changed by about 0.1mm.
(0~99: Default value 50)
(DEN-B)
The rear edge void area is adjusted by controlling the effective print data length with the image lead edge signal (LD
START signal) output from the ICU as the reference.
The effective image (effective image data) is determined when scanning the image.
When the set value is increased, the rear edge void area becomes great.
When the set value is changed by 1, the rear void area is changed by about 0.1mm.
(0~99: Default 50)
(REAR LOSS (SPF)) (AR-2X1/3X1/4XX/250/XX6 series only)
Used to adjust the rear edge image loss in the SPF copy mode.
The greater the set value is, the greater the rear edge image loss is.
When the set value is changed by 1, the rear edge image loss is changed by about 1mm.
(0~20: Default 0)
Adjust in the following sequence:
1) Set the image loss amount (IMAGE LOSS) and the paper lead edge void amount (DEN-A) to arbitrary values (20).
(0~99: 0.1mm/step)
2) Adjust the document scan start position (RRC-A) so that the actual copy image loss becomes the value set in
procedure 1. (0~99: 0.24mm/step) (0.29mm/step (AR-4XX series))
3) Adjust the resist roller clutch ON timing (RRC-B) so that the actual copy image loss becomes the value set in
procedure 1. (0~99: 0.17mm/step)
4) In the SPF copy mode, adjust the SPF image position (SPF) to the value set in procedure 1). (0~99, 0.1mm/step)
5) Adjust the rear edge image loss (REAR LOSS (SPF)) in the SPF copy mode. (0~20, 1mm/step)
(AR-2X1/3X1/4XX/250/XX6 series only)
6) Adjust the rear edge void amount (DEN-B). (0~99: 0.1mm/step)
Note
50 - 2 Purpose Adjustment
Function Used to adjust the copy image position and the void area (image loss) on the print paper in the copy mode.
(Purpose) (Simple adjustment)
(This simulation allows the same simulation with SIM 50-1 more simply. )
Section
Item Picture quality
Operation/ 1. Select the adjustment item with [↑], [↓] keys.
Procedure
2. Enter the adjustment value with the 10-key.
3. Press the [OK] key. (The value entered in procedure 2 is set.)
IMAGE LOSS
DEN-A
DEN-B



Same as SIM 50-1


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Image position
AR-405
1/21/1999