3) Centering adjustment value (for Tray 4 and/or Tray 5) is wrong
To correct it, readjust the centering adjustment of “Tray 4” and “Tray 5”.
Service mode => [01 Machine Adjustment] => [01 Printer Adjustment] => [02 Centering
Adjustment]: Print the pattern and measure the off-center amount with the sale.
[CAUTION FOR THE WORK]
* For the “Tray 4”, “Tray 5” and “ADU” adjustment value, 50 and larger value cannot be
entered.
* During this adjustment, PFU centering sensor should be ON (default).
DipSW 26-4 (Printer auto centering correction PF ON: 0, OFF: 1)
When the Printer auto centering correction sensor is set to OFF, sudden shift with 5mm will
not occur but centering correction itself is not performed. Consequently, the registration
accuracy between side 1 and side 2 may becomes poor.
(Use this setting to check if the centering error is caused by sensor)
* Even if the main body and PF are connected properly, there may be the slight difference.
Centering adjustment for Tray 4 and Tray 5 are to correct this difference.
After re-adjusting the centering error, exit service mode and perform side1/2 adjustment
for each tray with the specific paper customer want to use. For details, refer to
14.
Side1/2 image registration
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