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Maintenance 3-41
NovaJet 800 Series Service Manual
MAINTENANCE
Servo PWM Test
Servo Cycle Test
Accessory Menu
Carriage Test
Color Test Menu
Continuous Test
Exit
*
Figure 3-28. Diagnostics Menu.
All tests under the Diagnostics Menu should be performed by competent technicians only.
The types of tests that can be performed are: Servo PWM Test, Servo Cycle Test,
Carriage Test, Color Test, Continuous Test, Fan #1 Test, Fan #2 Test and Legs Test.
The Fan #1 Test, Fan #2 Test and Legs Test are located in the Accessory Menu as
shown in Figure 3-29. A Sensor Status Menu is also available in the Accessory Menu.
Fan #1 Test
Fan #2 Test
Legs Test
*
Sensor Status
Exit
Figure 3-29. Accessory Menu.
Servo PWM Test - Monitors the PWM (pulse width modulation) signal applied to the
servo motor from the driver on the Main PWA to check the amount of force required
to move the Carriage. The test performs three complete cycles of the carriage
assembly and lists the average PWM via a Halt Time count. If Halt Time reaches
98 then a ‘Carriage Axis Error’ will result. When Halt Time exceeds 90 during
normal operations rountine or corrective maintenance is required.