HP StorageWorks HSG80 Array Controller V8.7 Maintenance And Service Manual page 66

Replacement Procedures for BA370 Enclosure Elements
CAUTION: ESD can easily damage the cache module or DIMM. Wear a snug-fitting,
grounded ESD wrist strap.
IMPORTANT: The replacement cache module must contain the same cache memory
configuration as the module being replaced.
1. Insert each DIMM 1 straight into the appropriate slot 2 of the replacement cache
module, ensuring that the notches in the DIMM align with the tabs in the slot (see
Figure 3–6).
2. Press the DIMM gently into the slot until seated at both ends.
3. Engage the two retaining clips 3 for the DIMM.
4. Make sure both ends of the DIMM are firmly seated in the slot and both retaining
clips engage the DIMM.
5. Repeat step 1 through step 4 for each DIMM.
CAUTION: Carefully align the cache module in the Cache A guide rails. Misaligning
the module might damage the backplane.
6. Disable the ECB by pressing the battery disable switch until the status light stops
F
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7. Connect the ECB Y-cable to the replacement cache module.
8. Insert the replacement cache module into the Cache A bay and engage the
retaining levers.
CAUTION: The ECB must be disabled—the status light is O
ECB Y-cable to the cache module. Failure to disable the ECB might result in cache
module damage.
The ECB Y-cable has a 12-volt and a 5-volt pin. Improper handling or misalignment
when connecting or disconnecting might cause these pins to contact ground, resulting
in cache module damage.
9. If not already connected, connect a PC or terminal to the controller maintenance
port.
10. Restart the controller by pressing the reset button.
NOTE: A controller restart can take as long as 60 seconds, indicated by the temporary
cycling of the port LEDs and a F
3–12
—approximately 5 seconds.
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HSG80 Array Controller V8.7 Maintenance and Service Guide
reset button.
—before connecting the
FF