Parker AC890 Product Manual page 241

Routine Maintenance and Repair
SMPS PCB Replacement
1. Follow steps 1 to 3 of procedure 'Power Control PCB and CALIBRATION Card Replacement'. Release
hinged panel fixing - 1 off ¼ turn fastener as shown in Figure 10.1.
2. The SMPS PCB may now be viewed on reverse side of hinged panel as shown below.
3. Take note of PCB connectivity and carefully remove and replace PCB, ensuring that PCB is re-
connected correctly. Correctly refit any insulating parts that may be present.
4. Re-fit hinged panel and ¼ turn fastener as shown in figure 10.1.
5. Replace drive front cover (metal) which is attached via 4 off ¼ turn fasteners (take care not to damage
PCBs beneath cover).
6. Re-connect 4-way op-station cable to LED PCB (see figure 10.1).
7. Re-fit drive top and bottom terminal cover (plastic) via 2 off ¼ turn fasteners at top and bottom of drive.
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AH464883U101
Figure 10.2 SMPS PCBs
890SD (Standalone) Drive: Frame G, H & J