Training Guide Course No. 196514
Level 2 Maintenance, X-1000 Series Dispensing Systems 5-46 P/N 196515 (Revision A)
Exercise Sheet 5-8-1
Removing 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
The faulty XY Servo Interface PWA should be returned to Asymtek. All
components and fasteners removed during this procedure should be
retained in an orderly manner and in a safe location for reinstallation or
shipment back to Asymtek.
1. Perform a Service Shutdown as specified in on page 1-11 of this manual.
The Capacitors on the XY Servo Interface PWA present an extreme shock
hazard. Before removing the Servo Shelf Cover, wait at least one minute
after system shutdown to allow the Capacitors to discharge to safe levels.
2. Loosen the two captive, slotted thumbscrews holding the Servo Shelf Cover in
place. Carefully remove the Servo Shelf Cover by pulling it outward and upward
(See Diagram Sheet 5-8-1 on page 5-47).
When removing the Servo Shelf Cover, avoid contacting the electrical and
pneumatic components on the Servo Shelf or they may be damaged.
3. Position the ladder at the back of the dispensing system.
4. Locate the XY Servo Interface PWA and verify that the Power Indicator LEDs are
no longer illuminated (See Diagram Sheet 5-8-2 on page 5-49).
Lighted LEDs indicate that electrical power is still present in the system. Wait
until all LEDs go out before proceeding.
5. After verifying all of the cables on the XY Servo Interface PWA are clearly
labeled, disconnect all of the cables attached to the XY Servo Interface PWA.
Label the cables if necessary.
6. Remove the nine 3-mm socket head cap screws holding the XY Servo Interface
PWA in place.
Note the orientation of the XY Servo Interface PWA to make reinstallation
easier.
7. Remove the XY Servo Interface PWA from the Servo Shelf.
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