February 2013
3-98
ColorQube® 9303 Family
TP 21
Image Quality
Definitions of Jet Conditions
NOTE: Service jet test pages are printed without jet substitution turned on and therefore will
always show the true condition of each jet. The detected machine status may not always match
the true condition of a jet at the time the jet pages are printed. Even if a jet number is purple,
red or green you may see a colour bar over the jet number if the jet has managed to recover on
its own.
There are 3 jet conditions indicated by the jet test pages:
• Missing Jets
Missing jets may be visible on the jet test pages as white space where the coloured bar
for the jet should be. When a missing jet is detected by the machine, the jet number will
be purple with a purple pointer indication beneath the jet number, Figure 3.
Figure 3 Missing jet number
• Chronic Jets
Chronic jets may be visible on the jet test pages as white space where the coloured bar
for the jet should be. If the machine detects a missing jet but is unable to retrieve it with
maintenance or corrective action the missing jet is designated as chronic. The jet number
will be red with a red pointer indication beneath the jet number, Figure 4.
Figure 4 Chronic jet number
• Masked Jets (GP 30 How to Mask Jets/Jet Substitution)
Masked jets may be visible on the jet test pages as white space where the coloured bar
for the jet should be. Problem jets identified by the customer but not by the machine,
which cannot be revived, can be masked manually. Once masked, the jet number will be
green with a green pointer indication beneath the jet number, Figure 5.
Figure 5 Masked jet number
Customer Jet Test Pages
NOTE: Information on the customer jet test pages is included here for completeness. Cus-
tomer jet test pages are not used for fault isolation.
The customer jet test pages, shown in Figure 6, are located in Fix Image Quality and available
for customers to use when diagnosing print quality problems. Figure 7 shows how the cus
-
tomer jet test pages includes jet status information for each print head and the current status of
jet substitution. The customer jet test pages use jet substitution if enabled.
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