Interpreting Diagnostic Indicator Lights - DEC DECstation 5000 Model 100 Series Hardware Operator's Manual

Table 10-1. Interpreting Diagnostic Indicator Lights
Lights Meaning
 
If the workstation does not turn on, a device or module is not connected
properly or is broken.
If the workstation turns on, all components of the workstation have
been initialized, and the workstation is ready for use.
 
Workstation hardware initialization could not begin.
 
The firmware could not calculate the cache size.
 
The firmware could not calibrate the millisecond delay loop.
 
The firmware could not start the power-up versus reset code.
 
Memory bank 0 could not be initialized.
 
The firmware could not initialize the IO ASIC to a known state.
 
The read-only memory (ROM) in the system module or in one of the
option modules could not be initialized.
 
The system console programs could not be initialized.
 
The system module or one of the option modules could not be
 
initialized. The lights on the left show the slot number of the module.
 
This table shows slot numbers 0 (Off Off Off Off) to 3 (Off Off On On).
 
 
The workstation was initialized, but there is a problem in the system
 
module or one of the option modules. The lights on the left show the
 
slot number of the module with the problem. This table shows slot
 
numbers 0 (Off Off Off Off) to 3 (Off Off On On).
 
The worksystem software could not be loaded. The lights on the left
 
show the slot number of the module where the software is stored. This
 
table shows slot numbers 0 (Off Off Off Off) to 3 (Off Off On On).
 
Notes:

Light is off.

Light is on.
Troubleshooting 10–5