IBM totalstorage 200, Service Manual

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Note: PCI bus A is often referred to as PCI bus 0.
PCI B Error on PCI channel B or system board.
Note: PCI bus B is often referred to as PCI bus 1.
VRM Error on voltage regulator module or on integrated voltage regulator.
DASD1
A hot-swap disk drive, backplane, or other part of SCSI channel A has
failed.
DASD2
A SCSI device on SCSI channel B has failed.
Adding or removing internal hardware components
This section describes how to add or remove internal hardware components.
Removing the cover (Model 200)
The following sections describe how to remove the cover, the door (for the Model
200), and the bezel.
To remove the left-side cover of the Model 200:
1. Review the information in “Before you begin” on page 43.
2. If you are planning to install or remove any part other than a hot-swap hard disk
drive or hot-swap power supply, switch off the appliance and all attached
devices and disconnect all external cables and power cords.
3. Slide the cover-release lever on the front of the appliance to release the cover;
then, slide the cover toward the rear of the appliance about 25 mm (1 in.). Move
the top edge of the cover out from the appliance; then, lift the cover off the
appliance. Set the cover aside.
Left-side cover
Cover
release
lever
Figure 13. Removing the cover of the Model 200
Chapter 4. Adding and replacing components
51