Example Of Power-Up Tests With Errors - Digital Equipment VAXstation 3100 Maintenance Manual

Testing 5
be replaced. When you are not sure whether a device needs replacing or not,
refer to the troubleshooting section for that device in Chapter 2.
KA42-A Vl.O
F? •• E •••
o ... c ...
B ••• A ••• 9 •••
e ...
7 ••• 6 ••• 5 ••• 4 •• 3 •• 2 •• 1 •••
?? F OOBO 0001.F002
? E 0040 0000.0005
(Hard error)
(Soft error)
Figure 1-2 Example of Power-Up Tests with Errors
Usually, a 1 in the power-up summary indicates a minor problem and the
system may be usable without replacing any FRUs. A ?1 in the power-up
summary indicates a hard error. This indicates a serious problem that may
affect normal operation and use of some component in the system. The failing
device must be replaced before booting the operating system software.
You should always display the configuration table (enter TEST SO) after
power-up tests to be sure all of the devices in the system are listed (on-line).
If, for instance, a disk drive is installed but its power connector becomes
unplugged the tests would not show an error during testing. The system
boots automatically. You have to stop the booting process by pressing the
halt button and check the status of all devices in the system. You should be
familiar with the good status codes for each device listed in the configuration
table and know when a drive's status code shows it to be off-line when it
really should be on-line.
If the monitor screen remains blank for more than 5 minutes after the power
is
switched on, there may be a problem with the monitor, the video cable or the
system. Check the LEDs on the back of the system box or on the keyboard to
determine if the system has failed. If the system is normal, check the monitor
and cable. Appendix G contains the definitions of the LEDs on the back of
the system box. Table
1-3
lists the failing module indicated by the LEDs on
the keyboard.
Table 1-3 Kt:.tboard LEDs Defined
Keybo1rd LED
Hold Screen
Lock
Compose
Wait
Falllng Module
System module
Option module (8-plane graphics)
Ethernet circuits on system module
Not
used