IBM Power 775 Manual page 53

Power775 Disk Enclosure Fan Service Procedure
CAUTION: Following the service procedure assures power is removed from 350 VDC power distribution
STEP 38
connectors before they are unplugged. However, unplugging 350 VDC power distribution connectors while
powered on, should not be done because it can cause connector damage and could result in burn and/or
shock injury from electrical arcing. (C039)
Disconnect the HPIC and E/NET extension assemblies from DCCA1
Using the 2mm Hex Torque Driver P/N 74Y0983, disconnect the HPIC extension assembly from DCCA1.
Disconnect the E/NET extension assembly from DCCA1.
STEP 39 Replace fan cover (see Figure 35.)
With cover oriented vertically insert tabs into chasses and rotate cover to the closed position. Rotate the ¼ turn
fasteners clockwise to the locked position.
STEP 40 Disconnect the HPIC (P/N 45D7998) and E/NET (P/N 45D8000) extension assemblies from the DCCA Power
(HPIC) and DCCA Communication (E/NET) cables that go to DCCA1. Return the assemblies to the Fill and
Drain Tool.
STEP 41 Applying force to the cable tray, slide the DE back into the frame carefully. Be careful not to damage any cables.
ATTENTION: Do not push on any FRUs. Apply force only to the cable tray.
Insert tabs into Chassis
Figure 40 Reinstall cover
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