# WHITE OR BLACK BANDS

Check the settings

Check the settings of the main unit/printer driver listed below.

• Check that the paper type and size are appropriate.
• Check that the rubbing avoidance mode is “off”.

Are the printer/driver settings appropriate?

Go to step 2

Change the settings

Check implementation of printing troubleshooting (answer and handing an incoming call)

Check implementation of printing troubleshooting at an incoming call.

Has printing troubleshooting been performed?

This is to be dealt with by a service engineer.

Go to step 3

Check implementation of printing troubleshooting at an incoming call.

If the symptom is not resolved even after performing printing troubleshooting, judge that this needs to be dealt with by a service engineer, and go to step 3.

1. If occurs periodically at head length (33 mm) = Nozzles missing, adjustment values
2. If occurs in multiple places within the head length (33 mm) = Nozzles missing

* If the spacing of bands is 66 mm and a white band and black band occurs alternately or a dark white band and light white band or a dark black band and a light black band appears alternately and repeatedly, contact service support.

In the case_1
Check that there is no nozzles missing and then perform print trouble resolutions.
* However, if the trouble only occurs with specific paper, perform the print trouble remedies for each paper.

In the case_2
Go to step 4

Check the nozzle check pattern

Print nozzle check patterns and check whether there are nozzles missing or deflection.

• Nozzle check pattern print method is belows.
  • Normal menu
    • [Setting] > [Maintenance] > [Print Head Nozzle Check]
• Service Support Mode
  • NOZZLE CHECK PATTERN [B32]

Check the Ink system Assy
Check the following point about the Ink system assy
(Execute “CR Unlock Power Off” from the Service Support Mode   in advance to release the CR lock before checking the Ink system assy.)
Inksystem Assy is correct condition?

1. Check the cap parts
   • Check that the cap surfaces are not dirty.
   • Hold the CR belt with a hand and move the CR to the home position and visually check that the nozzle surfaces are capped properly.
2. Check the wiper parts
   • Check that there is not soiling or damage to the wiper parts
   • With the cap sliders drawn to the right side, rotate the PF gears by hand and check that the wipers move up and down.

• When cap/wiper is dirty
  
  • Cleaning the cap surface / wiper part
• When capping failure of the nozzle surface is confirmed
  • Replace the Ink system assy. (Refer to Ink System Assy  )
• When the wiper part breakage / wiper operation failure is confirmed
  • Replace the Ink system assy. (Refer to Ink System Assy  )

If the symptom continues to occur after changing to the genuine ink packs, go to step 6.

Check whether or not skewing

• Check that there is no paper skewing when feeding.
• Is there a difference between the banding on the left and right (left black and right white, etc.)
• If there is skewing, check the paper loaded, paper feeding path, and solenoid operation.
  (Execute the following item from the service support mode.)
  
  • NIP SOLENOID/SENSOR [B25]