Xerox 7700DX Service Manual - Page 159
Fine Skew Adjustment Procedure, 2 is an IN/OUT Skew Procedure
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Page 159 highlights
Y:RADC Target=400 Ave RADC Trans=367 * (may be different and may change) Ideal LD Ill=251 * (may be different and may change) VBias=862 VBCR=0 M:RADC Target=400 Ave RADC Trans=450 * (may be different and may change) Ideal LD Illl=281 * (may be different and may change) VBias=862 VBCR=0 C:RADC Target=338 Ave RADC Trans=325 * (may be different and may change) Ideal LD Ill=293 * (may be different and may change) VBias=862 VBCR=0 K:RADC Target=380 Ave RADC Trans=397 * (may be different and may change) Ideal LD Ill=297 * (may be different and may change) VBias=862 VBCR=0 If the adjusting screws reach their maximum adjustment range either Clockwise or Counter Clockwise, center the adjusting position of the screws and restart the RegiCon procedure. The adjusting screws have 18 complete turns from fully CW to fully CCW. To adjust the screws to the center position, turn the screw to either limit and then turn it back 9 complete turns. #1 Fine Skew Adjustment Procedure - this process examines the fine RegiCon image on the belt and reports the skew adjustments needed to be made (page 4-137). #2 is an IN/OUT Skew Procedure - this process calibrates the end points of the scan line for magnification adjustment. There may be manual skew screw adjustments recommended by this test (page 4-138). #3 is a CENTER Skew procedure - this process requires moving the Mark-On-Belt (MOB) sensor from the edge of the Accumulator Belt to an inner position of the belt (at approximately 1/3 the distance from the edge) to calibrate the CENTER components of the scan line for the magnification-balance adjustment (page 4-139). Phaser 7700 Color Laser Printer Service Manual 4-129
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