Tp 21 Jet Test Pages - Xerox ColorQube 9303 Series Service Manual

TP 21 Jet Test Pages

These A4 (8.5 x 11 inch) pages are a set of diagnostic test prints used to check print head jet
status. There are service jet test pages and customer jet test pages.
NOTE: Before printing this test page, ensure that A4 or 8.5 x 11 inch plain paper is loaded long
edge feed into tray 4. Use the best quality media available. Do not use hole punched paper.
Printheads occasionally get clogged jets that require user intervention to restore jet function.
When a clogged jet occurs, areas of solid colour may show signs of light stripes.
Jet test pages are used to check print head jet status. Two versions are available, service and
customer. Jet test pages demonstrate effective print quality and provide visual feedback on the
health of print head jet stack.
Service Jet Test Pages
Service jet test pages are printed from dC968
Figure 1 Jet test pages
ColorQube® 9303 Family
and dC977.
The service jet test pages, shown in
pages show the conditions of print heads 1 and 2. The second 4 pages show the condition of
print heads 3 and 4. After completing the jet test pages, a page containing a print quality man-
agement status check is produced,
refer to 91-636-00 IOD in Degraded Mode RAP for the corrective actions.
• The condition of each jet is shown in a bar of ink with the jet number directly beneath.
• The machine is able to detect the condition of jets in some conditions. Detected defective
jets are indicated by a pointer beneath the number. The jet number and pointer for defec-
tive jets are colour coded according to the known condition of the jet.
• The total number of missing, chronic and masked jets per print head is shown to the side
of the jet indicators.
• JSC[On,On]: indicates jet substitution is enabled (On) for both customer and machine set-
tings. The machine may override the customer setting temporarily if the Quick Light Lines
fix has been selected from the Tools/Fix Image Quality menu. After the next purge or
machine reboot, the settings revert to customer settings. When jet sub is enabled, print
speed slows down only when a jet is missing and is required for the current print.
• PC[On,On]: means the purge configuration is set to purge at night/when idle for both cus-
tomer setting and machine setting. Same override rule applies. The purge here is jet fix
purge that will only occur if the machine needs to auto recover an intermittent, weak, or
missing jet.
• Beneath the data for print head jet status the test page lists the print head serial number,
page count, current resolution, IME software version and page number.
To solve image quality problems related to weak, missing or sputtering jets, refer to
February 2013
3-97
Figure 1, consists of eight test pattern pages. The first 4
Figure 2. This table indicates the status of the each routine,
Figure 2 Print quality status
IQ 9.
Image Quality
TP 21