Xerox WorkCentre Pro 423 Service Manual page 323

[1.] IOT Vertical Magnification Adjustment (Main Motor
speed adjustment)
Check
1. Enter the C/E mode.
2. Enter Test Print.
3. In Chain/Function Code "24/15", make two copies of
the Grid+Slanting lines (4BIT)
4. (Figure-1) Check that a distance of 202.5±1mm is
measured between the first line and 26th line.
(Figure-1) j0hn4a28
Adjustment
1. Enter the C/E mode.
2. Change the set value for Chain/Function Codes
"50/28".
• l When the measured value is shorter: Increase the
value.
• l When the measured value is longer: Decrease the
value.
Min Nominal
Set range 0 11
Changes 0.1% 0.1%
/1Step /1Step
WorkCentre Pro 432/428
[2.] IIT Vertical Magnification Adjustment (Scan Motor
speed
adjustment)
Inst. The IOT Vertical Magnification Adjustment should
have already been adjusted.
Check
1. Make two 100% copies of Test Chart 499T247 onto
A3 paper.
2. (Figure-2) Ensure that a measured value of the
specified area on the second copy is 400±3.2mm.
(Figure-2) j0hn4a29
Adjustment
1. Enter the C/E mode.
2. Change the set value for Chain/Function Codes
"21/1".
• l When the measured value is shorter: Increase the
value.
• l When the measured value is longer: Decrease the
value.
Max
Min
21
Set range 0
0.1%
-1%
/1Step
Changes
Nominal Max
5 10
±0% +1%
Mag.ratio x 0.2% / 1Step
03/02
4-49 CHAPTER 4 DISASSEMBLY/ASSEMBLY AND ADJUSTMENT
Note Perform the following adjustment only for the
DADF equipped models.
[3.] DADF Vertical Magnification Adjustment (Document
Feed speed adjustment)
Inst.. The IOT Vertical Magnification should have
already been adjusted.
Check
1. Loading the Test Chart 499T281 on the DADF with
its long edge, make its 100% copy onto B4 paper.
2. (Figure-3) Ensure a measured value of the specified
area is 196±2.4mm.
(Figure-3) j0hn4a30
Adjustment
1. Enter the C/E mode.
2. Change the set value for Chain/Function Codes
"21/83".
• l When the measured value is shorter: Increase the
value.
• l When the measured value is longer: Decrease the
value.
Min Nominal
Set range 0 35
-3.5% ±0%
Changes 0.1% / 1Step
4.3 Adjustment
Max
70
+3.5%