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Maintenance • Preventive Maintenance PS288 Owner’s Manual 5—15 Check the T ray-Present Sensors 1. Check fiber optics— Check that the fiber optics are illuminated at each tray position. 2. Check sensor mounting set s crew…

Maintenance • Preventive Maintenance

5—14 PS288 Owner’s Manual

Figure 5-8—Y-axis and X-axis servo motor amps

2. Check wiring harness connections—

2a) Check the wiring harness connections for the X-axis and Y-axis servo

motor amps.

2b) Tighten if necessary.

NOTE: The X-axis and Y-axis servo motor amps are located just

behind the panel and are marked 1Y1 and 1X1.

2c) Reinstall all guards and panels.

Check the Gantry (X and Y) Mounting Bolts

WARNING: Electric shock hazard. Shut down the PS288 (see

“Shut Down the System” on page 3-12) and turn off the main

power switch before removing the lead screw shields.

1. Prepare the system—

1a) Verify that the PS288 is shut down and the main power switch is in the

OFF position.

1b) Remove the four bolts that hold the two lead screw shields to the gantry

rails.

1c) Remove the shields.

2. Check X-axis lead screw rail—

From the bottom side of the X-axis lead screw rail, check and tighten

the mounting bolts located on each end of the rail.

3. Check Y-axis lead screw rail—

From the bottom side of the Y-axis lead screw rail in the center of the

rail, check and tighten the four mounting bolts.

4. Reinstall—

Reinstall the two lead screw shields.

Y- ax i s

X-axis

Maintenance • Preventive Maintenance

PS288 Owner’s Manual 5—15

Check the Tray-Present Sensors

1. Check fiber optics—

Check that the fiber optics are illuminated at each tray position.

2. Check sensor mounting set screws—

Check and if necessary tighten each sensor mounting set screw.

3. Reset sensor if position has changed—

3a) If the sensor position has changed, loosen the set screws.

3b) Insert a tray into the tray holder.

3c) Adjust the sensor so that I/O Controller LED Port 1, Bit 3 is on when

Tray 1 is inserted. See Figure 5-9.

3d) Adjust the sensor so that I/O Controller LED Port 1, Bit 4 is on when

Tray 2 is inserted.

Figure 5-9—I/O Controller LED showing Port 1, Bit 3 is on

3e) Tighten the set screws.

3f) Remove the tray and check that the LED is off.

Procedures Performed Every Six Months

Check the PNP Head and PNP Gantry Wiring Harnesses

1. Check—

1a) Check and if necessary tighten the mounting screws of the PNP head

wiring harness. See Figure 5-10.

Maintenance • Preventive Maintenance

5—16 PS288 Owner’s Manual

Figure 5-10—PNP head mounting screws

1b) Check PNP gantry wiring harness plug connections and make sure that

they are secure. See Figure 5-11.

Figure 5-11—PNP gantry wiring harness plug connections

Clean and Check the Cable Carriers

1. Clean—

Use dry compressed air to remove all foreign material from the cable

carriers.

2. Check—

2a) Check that the cables are not too loose or too tight. The cables should

be in good condition.

2b) Check the two screws on the upper carrier and tighten if necessary.

See Figure 5-12.

Mounting screw

Plug connection