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NovaJet 800 Series Service Manual
Table of Contents (cont)
Chapter 4 Troubleshooting .............................................4-1
Introduction .................................................................................. 4-1
No Power ............................................................................... 4-1
No Power ............................................................................... 4-2
Initialization Failure ................................................................. 4-2
Media Does Not Move............................................................. 4-3
Internal ERROR “Carriage Axis Failure” ................................... 4-4
Internal ERROR “Encoder Sensor Failure” ............................... 4-5
Internal ERROR “Paper Sensor Failure” ................................... 4-6
Internal ERROR...................................................................... 4-6
Auto-Load Paper Sensor Failure” ............................................ 4-6
Internal ERROR “MPCB Failure” ............................................. 4-7
Unrecognized Cartridges Error ................................................ 4-7
Media Sen Ref. Pts Not Initialized (NJ880 only) ....................... 4-8
Image Skews or Moves........................................................... 4-8
Does Not Print ....................................................................... 4-8
Ink Cartridge Misfiring ............................................................. 4-9
Paper Skewing ..................................................................... 4-10
Printer Output is Banding (Horizontal) ................................... 4-10
Printer Output is Banding (Vertical) ....................................... 4-12
Printer Output is Banding (Horizontally and Vertically) ........... 4-12
Keypad Locked-Up or Not Functioning Properly ..................... 4-13
Noisy Operation ................................................................... 4-13
Line Quality Degraded .......................................................... 4-14
Fan Does Not Power Up ....................................................... 4-16
Media Take-UpMotor Not Operating, Sensor Works ............... 4-16
Media Feed Motor Not Operating, Sensor Works................... 4-17
Media Feed and Take-Up Motors Not Operating,
Both Sensors Working.......................................................... 4-17
Media Feed or Take-Up Sensor(s) Not Operating ................... 4-17
Print Quality Issues .............................................................. 4-19
Cartridge Misfires (Intermittent Banding) ................................ 4-19
Failure Analysis - Print Misfires............................................ 4-20
Common Misfire Problems.............................................. 4-25
Clearing Cartridge Misfires .............................................. 4-26
Multiple Cartridge Failures .............................................. 4-26