Kodak 800 SERIES service manual Servo Cycle/PWM Menu

NovaJet 800 Series Service Manual

Figure 4-94. Servo Cycle/PWM Menu.

8.Run the PWM test (3 default cycles) or Servo Cycle test (set for 100 cycles) under Diagnostics; if the tests were successful (without error or Halt time does not exceed 60) then check the firmware version. If the carriage assembly moves only 1- 3" (2 to 8 cm) from the home position at power up, resulting in a ‘Carriage Axis Error’ (occurs @ value 98), then the servo motor is most likely defective. Also, see step 10 below.

Figure 4-95. Carriage Bushings.

9.Power off printer, move carriage assembly to extreme left-hand side of unit. Power on printer. If the carriage returns to the service station on the first pass then the trailing cable (large flat white cable) is probably good - suspect worn outrigger bushings (2 total) or internal carriage bushings (4 total). Refer to Disassembly.

10.For erratic carriage movement at power up reseat the trailing cable and encoder sensor cable connections at the Right carriage PWA. Reseat inner trailing cable connection at the Main PWA. Ensure all ZIF (zero insertion force connections are locked securely).

Troubleshooting 4-90