
16-26 Troubleshooting startup problems
System fails to boot completely
Standard 1.0 Modular Option EC Installation and Maintenance Guide November 1999
If the terminal output has stopped at some other point in stage 1
or 2, follow these steps.
Troubleshooting stage
3 bootup failure—disk
subsystem check
Failure during this stage of bootup can indicate problems with
the SCSI subsystem. Follow these steps.
Step Action
1 Replace the Enhanced MMP40 (or MMP40) card.
2 Check for Meridian Mail power problems.
DC system—as described in “Preliminary action” on page
16-18, “Resolving DC system power problems” on page 16-18,
“Testing the pedestal power supply” on page 16-19, “Testing the
power harness” on page 16-20, and “Testing the DCEPS” on
page 16-21.
AC system—as described in “Preliminary action” on page
16-18, “Resolving AC system power problems” on page 16-22,
“Testing the power harness and pedestal power supply” on
page 16-22, and “Testing the CEPS” on page 16-23.
3 Replace the utility card.
Step Action
1 Ensure that an incorrect Install tape has not been mistakenly
left in the tape drive.
2 Check the SCSI device jumper settings. Refer to the tape drive
and disk drive figures in Chapter 7.
3 Check the tape drive and each disk drive to ensure that the
SCSI cable and power cable between the drive and the
backplane connector are secure.
4 Check the voltage to disk and tape (+5 V, +12 V).
5 If on a non-prime node, replace the Enhanced MMP40
(MMP40) board.
6 Replace the disk as described in Chapter 7.
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