Training Guide Course No. 196514
Level 2 Maintenance, X-1000 Series Dispensing Systems 5-48 P/N 196515 (Revision A)
Exercise Sheet 5-8-2
Installing the XY Servo Interface PWA
Tools and Materials Needed:
3-mm Hex Key 1.0 k-ohm Bleeder Resistor (P/N 50-5190)
ESD Grounding Strap Removable Thread Locker (P/N 40-0019)
Small A-frame Ladder Torque Wrench
• Small Flat Head Screwdriver
ESD precautions must be taken while handling the cards or severe damage
from electrostatic discharge may occur.
Apply removable thread locker to all threaded fasteners unless otherwise noted.
1. Remove the new XY Servo Interface PWA from its ESD protective bag.
2. Use a 1.0 k-ohm bleeder resistor to discharge each Capacitor. Touch the positive
and negative terminals on each Capacitor for at least 10 seconds.
Terminals are the slotted screws located on the underside of the board.
3. Verify that the red dots on the bottom of each Capacitor can be seen through the
holes on the underside of the board.
If you cannot see the red dot on any of the Capacitors, remove the terminal
screws, adjust the position of the Capacitor until the red dot can be seen, and
then reinstall the screws. Torque the screws to 20 in-lbs (0.230 kg-m).
4. Position the new XY Servo Interface PWA on the Servo Shelf such that the mounting
holes in the board match those on the Servo Shelf.
5. Apply a small amount of removable thread locker to each of the hold-down screws.
6. Reinstall the nine 3-mm hold-down screws removed from the old XY Servo Interface
PWA. Torque the screws to 20 in-lbs (0.230 kg-m).
Do not overtighten the screws or the Board may be damaged.
7. Reconnect all of the cables to the appropriate connectors on the XY Servo Interface
PWA.
8. Replace the Servo Shelf Cover and secure it in place by tightening the two captive,
slotted thumbscrews. Do not use removable thread locker.
When installing the Servo Shelf Cover, avoid contacting the electrical and
pneumatic components on the Servo Shelf or they may be damaged.
9. Remove the ladder.
10. Remove any locks or tags on the Main Power Inlet and the Main Air Inlet and
reconnect facility power and air to the dispensing system.
11. Perform a Post-Service Start-up as detailed on page 1-14 of this manual.
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