Xerox WorkCentre Pro 423 Service Manual page 324

WorkCentre Pro 423/428
[4.] DADF Vertical Magnification Adjustment on
sending Fax (Document Feed speed adjustment on
sending Fax)
Inst. This adjustment should be performed when
precision of a vertical magnification ratio for a fax
receiving machine is required when sending a fax
using the DADF.
• l Standard setup:
While transmitting to NSC,
check/adjustment.
• l Customer Request:
While transmitting to a machine that a customer
requests a fax to be sent to, perform the
check/adjustment.
Check
1. Load Test Chart 499T281 on the DADF with its long
edge, send a fax with 100% and B4 set to NSC (or a
machine a customer requests a fax to be sent to).
2. (Figure-4) Ensure that a measured value of the
specified area on the received copy is 196±2.7mm.
(Figure-4) j0hn4a31
Adjustment
1. Enter the C/E mode.
2. Change the set value for Chain/Function Codes
"21/84".
• l When the measured value is shorter: Increase the
value.
• l When the measured value is longer: Decrease the
value.
perform the
Min
Set range 0
-3.5%
Changes
4-50 CHAPTER 4 DISASSEMBLY/ASSEMBLY AND ADJUSTMENT
03/02
ADJ 3.1.5 Magnification Adjustment in LEF (Fast
Nominal Max
35 70
±0% +3.5%
0.1% / 1Step
• l When the measured value is shorter: Increase the
• l When the measured value is longer: Decrease the
Set range
Changes
4.3 Adjustment
Scan Direction)
Purpose To obtain a proper magnification ratio in LEF
(fast scan) direction when making a 100% copy.
Check
1. Make two 100% copies of Test Chart 499T247 onto
A3 paper.
3. (Figure-1) Ensure that a measured value of the
specified area on the second copy is 200±1.6mm.
(Figure-1) j0hn4a32
Adjustment
1. Enter the C/E mode.
2. Enter IIT memory R/W.
3. Change a set value for Chain/Function Codes "21/2".
value.
value.
Min Nominal
0 10
-1% ±0%
Mag. Ratio x 0.1% / 1Step
Max
20
+1%