Fansink

Removal

1.Inform the customer that the system must be powered off for approximately one hour for the fan to be replaced.

2.Power off the system as described in "Removing the Cover" and continue to

unlock and remove the cover.

3.Determine the system board assembly part number by noting the white bar code label attached to the card.

Locate the assembly part number in the leftmost alphanumeric block of

characters, following the first three characters, which are always 11S. In the following example, the assembly part number is 41L5812.

The FRU part number is in the center alphanumeric block of characters, following the first three characters, which are always FRU. In the example below, the FRU part number is 41L5912.

11S41L5812YL1109140246 FRU41L5912 905

After you have identified both the system board assembly part number and the FRU part number, see the table, Fansink numbers by System Board Assembly and FRU Numbers, on page 8-5to determine the appropriate fan to be replaced.

4.To remove the disk drive bracket, refer to the "Removing Internal Drive" section to remove the disk drive bracket.

Note: If a hard file is attached to the disk drive bracket, unplug the hard file before removing the bracket.

Chapter 7. Removal and Replacement Procedures

7-13

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IBM B50 manual 11S41L5812YL1109140246 FRU41L5912, Fansink Removal