Specifications

Table 9-8. Interpreting Diagnostic Indicator Lights on the System Unit
Four Left Lights Action
No display; test
does not start
Check for loose or damaged connectors. Reseat any loose modules.
If the system still does not start, there is a basic problem in the
system. Contact your Digital service representative.
On On On On A hardware problem is preventing the test from running. Contact
your Digital service representative.
Off On On On If, in addition, the right indicator lights display On On On On,
replace the memory module in memory slot 1. If the right indicator
lights do not display On On On On, the problem is in the system
module. Replace the system module and chassis.
Off On On Off The problem is in the system module. Replace the system module
and chassis.
Off On Off On The problem is in the system module. Replace the system module
and chassis.
Off Off On Off Replace the module in option slot 2.
Off Off Off On Replace the module in option slot 1.
Off Off Off Off If any of the indicator lights on the right are on, replace the option
module in option slot 0.
If the indicator lights blinked as the system ran its tests and
the four right indicator lights are off, the self-test completed
successfully. Check your monitor.
9–16 Troubleshooting