Xerox 7700DX - Phaser Color Laser Printer, Service Manual

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Phaser 7700 Color Laser Printer Service Manual 4-129
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).