Paper Feed Accuracy Compensation Value Adjustment - Canon BJ-W3000 Service Manual

4. Paper feed accuracy compensation
value adjustment
Media feed accuracy can be adjusted as
follows.
1) Set up the service mode and select the
"ADJUST" mode.
2) Load a cut sheet larger than A3.
3) Use the left or right arrow key to display
"PRINT PATTERN" and then press the
down arrow key.
4) Make sure that "Scale" is displayed, then
press the ENTER key.
• The scaling adjustment pattern will be
printed.
• While printing, the message is followed
by a "*" mark.
PRINT PATTERN
Scale*
CAUTION
The paper feed accuracy compensation
value adjustment pattern may not be
adjustable, since the pattern cannot be
printed in the paper feed direction if the
Auto Layout/Rotation are set.
Adjustment is also difficult if Scale/Y
Mirror are set. Therefore, return the
settings of "Auto Layout", "Scale",
"Rotation", and "Y Mirror" to their
default values.
CHAPTER 5. TROUBLESHOOTING
5) Measure the length of the printed scale
adjustment pattern in the paper feed direction.
• Specified value: 380±0.5mm
Black Scale 15inch
Figure 5-201
6) If the measured value does not satisfy the
specified value, change the value of "X-
SCALE" in the ADJUST mode.
• Setting range: -32 to 32
• To change the value: Left and right
arrow keys.
• Value registration: ENTER key
X-SCALE
REFERENCE:
• Changing the value by 1 changes the
length of the adjustment in the X axis
direction by 1 dot (about 0.07mm).
• When the value is increased, the line
becomes longer, and by decreasing the
value, the line becomes shorter.
7) Repeat steps 2) through 6) until the
specified value is satisfied.
8) Turn OFF the power switch to leave the
service mode.
Scale 380mm
00*
5–13