IBM DR550, Problem Determination And Service Manual

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CAUTION:
The battery is a nickel metal hydride or lithium ion battery. To avoid possible
explosion, do not burn the battery. Exchange it with the IBM approved part.
Recycle or discard the battery as instructed by local regulations. In the United
States, IBM has a process for the collection of this battery. For information, call
1-800-426-4333. Have the IBM part number for the battery unit available when
you call.
Attention: If the cache battery pack is not already in the error state, follow the
steps described in “Forcing a Rechargeable Battery Error” on page 97 before
proceeding to prevent data loss. After the battery is in the error state, replace it
with a new battery by doing the following:
Procedure for non-Concurrently Maintainable Battery Packs: Use the following
procedure for replacing non-concurrently maintainable battery packs.
1.
Determine that it is safe to replace the cache battery pack. It is safe to replace
the cache battery pack when the display lists Yes next to Battery pack can be
safely replaced .
2. Remove the adapter from the system.
3. Refer to Figure 26 to locate the adapter. It is represented by letter E in the front
view of the drawer.
A
Battery Pack Casing
B
Cache Directory Card (do not disturb, shown here for identification
purposes only)
4. Remove the plug that connects the battery unit and the card.
Note: The plug fits in the board only one way so that it cannot be inserted
incorrectly during the replacement steps of this procedure.
Figure 26. Locating the adapter and battery
98
DR550 Version 4.5 Problem Determination and Service Guide