Plotter Carriage Moves Erratically - ENCAD CADJET 2 Service Manual

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11.17 Plotter Carriage Moves Erratically

If the plotter Carriage does not move smoothly while plotting or the plot
quality is poor, perform the actions below until the problem is
corrected.
1. The Slide Shaft may be dirty. See "Slide Shaft Maintenance" in
Chapter 3, Section 3.0.
2. Run the Carriage Vibration Test in the DIAGNOSTICS Menu:
This option tests for Carriage vibration by printing a test pattern of
5 sets of 3 parallel lines bi-directionally.
If there is vibration, check for debris in the grooves of the Servo
Motor Pulley and the Idler Pulley and/or on the inside of the
Carriage Belt. A brush (such as a clean toothbrush) or toothpick
can be used to dislodge any debris in the pulley grooves. A clean,
dry cloth can be used to clean the inside of the Carriage Belt.
Although the pulleys and belt can be cleaned with the belt in place
on the pulleys, you may find it easier to do the cleaning by
removing the belt from the Servo Motor Pulley. See Chapter 5,
Sections 8.7 and 8.8 for instructions on removing and replacing
the Carriage Belt. Carriage vibration may also be caused by the
belt rubbing on the Frame Tensioner or by a noisy Servo Motor.
3. Run the Servo Motor Test.
Select FAST or SLOW speed to cycle the Servo Motor. Display
message will be either RESULT=OK or RESULT=ERROR.
ERROR appears, the Servo Motor or driver circuits may be faulty.
Replace the Servo Motor first.
instructions. If ERROR still appears, replace the MPCB. See
Chapter 5, Section 4.3 for instructions.
CADJET 2
DIAGNOSTICS
CARRIAGE VIBRATE
DIAGNOSTICS
SERVO MOTOR
Troubleshooting
See Chapter 5, Section 5.0 for
If
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