Technical data

2.1 Diagnostic Functions
The VAXstation 4000 Model 60 and VLC system firmware provides the
diagnostic functions listed in Table 2–1.
Table 2–1 Diagnostic Functions
Function Description
Power-up test Tests and initializes all devices
Extended self-test Tests devices in the system sequentially with the TEST
command
System test
(Model 60 only)
Tests all devices in the system interactively
Utilities Functions for visual screen test, mass storage devices, and
the network listener
Error reporting Displays error messages on the console when errors are
found during power-up tests, self-tests, and system tests
2.2 Power-Up Test
The power-up test includes initialization and power-up testing of all devices.
The initialization code executes when power to the system is turned on. During
initialization, the system is configured by creating the Master Configuration
Table (MCT) and the Device Configuration Table (DCT). During device testing,
if a device fails, the system Test Dispatcher continues to test the remaining
devices until all tests are completed.
Fatal Error Before Initialization
If the system finds a fatal error before initializing the console, the system tries
to forward the error message to the eight error LEDs.
• Refer to Section B.3 for a list of power-up initialization diagnostic LED
codes.
• If all error LEDs remain on, the ROM code does not start.
Alternate Console Switch
If the alternate console switch is set to alternate console (switch is in up
position), then the system assumes a console terminal is connected to the
printer/console port.
2–2 Diagnostic Testing