IBM TotalStorage NAS Gateway 500, Руководство по обслуживанию

Страница: 98 / 471

Purpose of this MAP
This MAP is used to locate defective FRUs not found by normal diagnostics. For this procedure,
diagnostics are run on a minimally configured system. If a failure is detected on the minimally configured
system, the remaining FRUs are exchanged one at a time until the failing FRU is identified. If a failure is
not detected, FRUs are added back until the failure occurs. The failure is then isolated to the failing FRU.
Step 1548-1
1. Ensure that the diagnostics and the operating system are shut down.
2. Turn on the power.
3. Insert the diagnostic CD-ROM into the CD-ROM drive.
Note: If you cannot insert the diagnostic CD-ROM, go to “Step 1548-2”.
4. When the keyboard indicator is displayed:
v
On an ASCII terminal, the word keyboard , press 5.
5. If you are prompted to do so, enter the appropriate password.
Is the Please Define the System Console prompt displayed?
NO Go to “Step 1548-2”.
YES Go to “Step 1548-17” on page 86.
Step 1548-2
1. Turn off the power.
2. If you have not already done so, configure the service processor with the instructions in note 7 on
page 77. Then return here and continue.
3. Exit the service processor menus and remove the power cords.
4. Disconnect all external cables (serial port 1, serial port 2, Ethernet, and so on).
5. Place the drawer of the NAS Gateway 500 into the service position and remove the service access
cover.
6. Record the slot numbers of the PCI adapters. Label and record the locations of any cables attached
to the adapters. Disconnect any cables attached to the adapters and remove all the adapters.
7. Disconnect all power and signal cables from the media drives, located in media bay 1 and media bay
2.
8. Remove the media drives as described in “Media drive removal” on page 337.
9. Remove the media support shelf by loosening the thumbscrew and grasping the back edge of the
shelf, sliding it back, then lifting it up and out of the system chassis.
Note: The support leg located on the bottom of the media support shelf is used to deactivate a
microswitch. The microswitch is located on the CEC backplane and, when deactivated, cuts off
all power to the CEC backplane. This support shelf must be correctly seated and secured in
position after any new FRU is added to the system.
78
NAS Gateway 500 Service Guide