Ruled line misalignment or Character distortion

Assumed cause
  • Paper transport failure
  • Head correction value offset
  • Head nozzle clogging
  • Foreign objects on Nozzle surface
  • Waveform data is not transferred to the Head.
  • Image data generation or transfer failure
Defect-related parts
  1. Head Drive Board
    Due to failure in applying voltage, ink droplets fired positions differ between head chips.
  2. Belt Drawer Unit
    Failure in the feeding operation or ink droplets are fired onto incorrect positions
  3. Head Unit
    Error of alignment correction values
  4. HP Sensor, PG
    PG is wider than the set value
  5. Main Board
    Abnormal input signal to head
  6. Head FFC
    Image data transfer failure
  7. Anti Static Brush unit
    Poor paper adsorbing power due to defective paper static
  8. High Voltage Board
    Abnormal input voltage
Troubleshooting
Step Confirmation and action YES NO
1

Run Head Cleaning (CL3)

  • Is the Ruled Line Pattern defect improved?
 End of work Go to step 2
2

Print the 20102 Ruled Line Pattern on non-user paper

  • Has the image defect been improved?

(Due to user paper or separation. Use unopened or conditioned paper)

 End of work Go to step 3
3

Print the “Adsorption Check Pattern"

  • Is head rubbing (paper stain) occurring?

(Paper conveyance failure or separation of ink droplet landing position deviation)

 Go to step 5 Go to step 4
4

Replace the Head Drive Board
Print the Ruled Line Pattern

  • Has the image defect been improved?
 End of work Go to step 5
5

Clean the Belt Drawer Unit
Print the Ruled Line Pattern

  • Has the image defect been improved?

(Identifying poor suction due to poor charging)

 End of work Go to step 6
6

Replace the Belt Drawer Unit
Print the Ruled Line Pattern

  • Has the image defect been improved?

(Identifying defective charging due to belt flaws and charging roller contamination)

 End of work Go to step 7
7

Replace the Head Unit
Print the Ruled Line Pattern

  • Has the image defect been improved?
 End of work

Replace the parts/components to be checked one by one.