1. Sensor Adjustment
2. Back Bar Adjustment
3. Adjustment of the treverse and square-shaft

Sensor Adjustment

1. Remove the carriage cover. (See Fig. 1)
2. Put a pen in the carriage and turn the machine on. Make sure there is paper in the plotter.
3. Move the carriage over aproximately 12"
4. Put the force knob (On the keypad of the plotter) to 1:00.
5. Hit the "Sensor Test" button. The pen will draw two lines (See Fig. 2)
6. Each time the sensor passes over the marks, you should hear a "Beep". If you hear a beep every time, the sensor is already adjusted. If there is NO beep, proceed to step 7.
7. Locate the sensor screw (See Fig. 1). While the test is still running, loosen the screw so the sensor can be moved up and down.
8. Move the sensor up or down until you hear the Beep. The light emitting from the sensor onto the paper should look like the drawing in Fig 3.

If you have performed this test and still can’t hear the Beep, It is possible that the Beeper on the logic board has failed. To verify this, run a marker plot to see if the sensor reads the mark for a frame advance. If it still doesn’t read, contact Ioline Technical Support at (425) 398-8282, or E-Mail us at techsupport@ioline.com

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Back Bar Adjustment

Note: Before starting, make sure both back bar bolts are tight. Pinch wheel placement is also crucial. Follow the directions in the operation manual for pinch wheel placement.

1. Loosen the left side back bar bolt, center the bolt in the slotted hole, and re-tighten.
2. Run the "Sqwave.plt" plot (If you don’t have this file, one can be obtained from us via E-Mail at techsupport@ioline.com) or run a marker plot.
3. At the frame line, take notice of what direction the frame is moving (See Fig. 1)
4. On the left rear side of the machine, tighten the thumbscrew against the back bar, and loosen the bolt that holds the bar. (Loosen the left side bolt ONLY)
5. If the frame is moving to the right, turn the thumb screw (Clockwise) one turn, and tighten the bar bolt. If the frame is moving to the left, turn the thumb screw (Counter-Clockwise) one turn, and tighten the bar bolt.
6. Run a marker plot, if the frame is still moving repeat steps 3 and 4. Until the frames line up.

Note: You may have to run a few frames, to allow the paper to align itself.

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Adjustment of the treverse and square-shaft

1. Remove the left end cover.
2. Remove the four screws that hold the traverse to the end plate (Fig 1) Make sure and hold the traverse so that it doesn't fall on the platen.
3. Replace screw #4, but do not tighten.
4. Put in screw #3 while holding the traverse up as far as it will go. Tighten screws 3 & 4.
5. Put in the rest of the screws, and tighten.
6. Walk around to the front of the machine and check the gap between the traverse and square-shaft. The gap should be even all the way across.