HP Disk System 2300 HP StorageWorks Disk System 2300 User's Guide(This manual - Page 119

BCC, Tools, Procedure

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BCC Tools Procedure Replace a BCC when troubleshooting shows that the card is faulty (see "Isolating Faults" in Chapter 4). There is no need to turn off the disk system to remove and replace a BCC. In full bus mode with two BCCs, there is also no need to stop I/O to the disks. In other configurations, however, the host must be notified that all disks on the affected bus will be unavailable for I/O. Refer to Preparation (HP-UX 11.XX) on page 110. Caution Touching the BCC pins can cause high energy discharge and permanently damage the BCC. ESD wrist strap (no hand tools are required to perform this procedure). Whenever possible, follow ESD procedures. Caution Do not remove a BCC from an operating product until you have the replacement BCC and are ready to install it. An empty slot will cause uneven cooling and eventual overheating. 1 Remove the cables and/or terminators from the failed BCC. 2 Loosen the locking thumbscrew (A in Figure 54) until it clears the BCC bulkhead. The screw stays in the ejector handle. 3 Open the cam levers (B) by pulling them away from the center of the card. This disconnects the BCC pins from the midplane. 4 Pull the BCC out of the slot (C). Replace the BCC immediately if the product is in use (see next step). 5 Attach the clip end of your ESD wrist strap to the ground stud at the top of the rack. Caution Touching the BCC pins can cause high energy discharge and permanently damage the BCC. Removal and Replacement 119 Removal and Replacement

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Removal and Replacement
119
Removal and Replacement
BCC
Replace a BCC when troubleshooting shows that the card is faulty (see “Isolating
Faults” in Chapter 4).
There is no need to turn off the disk system to remove and replace a BCC. In full
bus mode with two BCCs, there is also no need to stop I/O to the disks. In other
configurations, however, the host must be notified that all disks on the affected
bus will be unavailable for I/O. Refer to Preparation (HP-UX 11.XX) on
page 110.
Caution
Touching the BCC pins can cause high energy
discharge and permanently damage the BCC.
Tools
ESD wrist strap (no hand tools are required to perform this procedure).
Whenever possible, follow ESD procedures.
Procedure
Caution
Do not remove a BCC from an operating product until you have
the replacement BCC and are ready to install it. An empty slot will
cause uneven cooling and eventual overheating.
1
Remove the cables and/or terminators from the failed BCC.
2
Loosen the locking thumbscrew (A in Figure 54) until it clears the BCC
bulkhead. The screw stays in the ejector handle.
3
Open the cam levers (B) by pulling them away from the center of the card.
This disconnects the BCC pins from the midplane.
4
Pull the BCC out of the slot (C).
Replace the BCC immediately if the product is in use (see next step).
5
Attach the clip end of your ESD wrist strap to the ground stud at the top of the
rack.
Caution
Touching the BCC pins can cause high energy
discharge and permanently damage the BCC.