Kodak 800 SERIES service manual Servo PWM Test

NovaJet 800 Series Service Manual

Servo PWM Test	*	Carriage Test
Servo Cycle Test		Color Test Menu
Accessory 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.

MAINTENANCE

Fan #1 Test	*	Sensor Status
Fan #2 Test
Legs Test		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.

Maintenance 3-41