Attaching the cable chains

The final step in installing a drive drawer is attaching the left and right cable chains to the drive shelf. When attaching a cable chain, reverse the order you used when disconnecting the cable chain. You must insert the chain's horizontal connector into the horizontal bracket in the enclosure before inserting the chain's vertical connector into the vertical bracket in the enclosure.

Before you begin

• You have replaced the drive drawer and all of the drives.
• You have two replacement cable chains, marked as LEFT and RIGHT (on the horizontal connector next to the drive drawer).

Callout	Cable chain	Connector	Connects to
1	Left	Vertical	Midplane
2		Horizontal	Drive drawer

Callout	Cable chain	Connector	Connects to
1	Right	Horizontal	Drive drawer
2		Vertical	Midplane

1. Follow these steps to attach the left cable chain:
   1. Locate the horizontal and vertical connectors on the left cable chain and the corresponding horizontal and vertical brackets inside the enclosure.
   2. Align both cable chain connectors with their corresponding brackets.
   3. Slide the cable chain's horizontal connector under the guide rail on the horizontal bracket, and push it in as far as it can go.
      The figure shows the guide rail on the left side for the second drive drawer in the enclosure.
      

      1	Guide rail

      CAUTION

      Risk of equipment malfunction — Make sure to slide the connector underneath the guide rail on the bracket. If the connector rests on the top of the guide rail, problems might occur when the system runs.
   4. Slide the vertical connector on the left cable chain into the vertical bracket.
   5. After you have reconnected both ends of the cable chain, carefully pull on the cable chain to verify that both connectors are latched.
      Attention

      Risk of equipment malfunction — If the connectors are not latched, the cable chain might come loose during drawer operation.
2. Reinstall the left fan module.
3. Follow these steps to reattach the right cable chain:
   1. Locate the horizontal and vertical connectors on the cable chain and their corresponding horizontal and vertical brackets inside the enclosure.
   2. Align both cable chain connectors with their corresponding brackets.
   3. Slide the cable chain's horizontal connector under the guide rail on the horizontal bracket and push it in as far as it will go.
      CAUTION

      Risk of equipment malfunction — Make sure to slide the connector underneath the guide rail on the bracket. If the connector rests on the top of the guide rail, problems might occur when the system runs.
   4. Slide the vertical connector on the right cable chain into the vertical bracket.
   5. After you reconnect both ends of the cable chain, carefully pull on the cable chain to verify that both connectors are latched.
      Attention

      Risk of equipment malfunction — If the connectors are not latched, the cable chain might come loose during drawer operation.
4. Reinstall the right fan module.
5. Reapply power:
   1. Turn on both power switches on the drive shelf.
   2. Confirm that both fans come on and that the amber LED on the back of the fans is off.