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Troubleshooting 4-61
NovaJet 800 Series Service Manual
Figure 4-63. Normal Color Test (3 Pass).
Normal Color Test. Some microbanding or banding will be seen in the
bar patterns – the purpose of the test is to check for ink pressure and not
the quality of the printed pattern. Verify all bars print at 100% ink
saturation.
Abnormal Color Tests:
Figure 4-64. Abnormal Test Examples.
A – Total ink starvation; recheck using the EasyPrime.
B – Partial ink starvation; check ink level in cartridge, ensure 20 ml
installed using the syringe provided.
Failure Analysis - Color Test Incorrect:
1. Ensure the cartridge is properly primed and pressure has been
established inside the cartridge (see Set Up procedures) Note:
when priming the cartridge it is important to ensure the suction
end of the EasyPrime assembly is flush against the cartridge jet
plate. Prime the cartridge using 3 consecutive one (1) second
bursts and then wait 3-4 seconds, repeat 4-6 times over a 1
minute period. A sucking noise should be heard from the
EasyPrime when procedure is performed correctly.