Lenovo ThinkSystem DE Series Manual page 88

5.4.7. Step 5: Attach cable chains
Attach the cable chains so you can safely re-install the drives in the drive drawer.
About this task
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 guide rail in the enclosure before
inserting the chain's vertical connector into the vertical guide rail in the enclosure.
Steps
1. Make sure that:
◦ A new drive drawer installed.
◦ You have two replacement cable chains, marked as LEFT and RIGHT (on the horizontal
connector next to the drive drawer).
2. From the back of the drive shelf, remove the fan canister on the right side, and set it aside.
3. If the shelf is powered on, ensure that the left fan goes to its maximum speed.
Possible equipment damage due to overheating — If the shelf is powered

on, do not remove both fans at the same time. Otherwise, the equipment
might overheat.
4. Attach the right cable chain:
a. Locate the horizontal and vertical connectors on the right cable chain and the
corresponding horizontal guide rail and vertical guide rail inside the enclosure.
b. Align both cable chain connectors with their corresponding guide rails.
c. Slide the cable chain's horizontal connector onto the horizontal guide rail, and push it in as
far as it can go.
Risk of equipment malfunction — Make sure to slide the connector into

the guide rail. If the connector rests on the top of the guide rail, problems
might occur when the system runs.
The figure shows the horizontal and vertical guide rails for the second drive drawer in the
enclosure.
81