DEC 4000 600 series, Owner'S Manual, Page: 205 / 242

Problems Getting to Console Mode
Table 9–6 Diagnostic Flow for Problems Getting to Console
Symptom Action Reference
Power-up screens
are not displayed on
console terminal. Check terminal power source and
power cord.
Check terminal brightness and
contrast controls. Verify that the
terminal power switch is on.
Check system operator control panel
lights for a failure during self-tests.
If two operator control panel lights
remain on, either option could be at
fault. Figure 9–2 and Table 9–7
Make sure that baud rate settings
for terminal and system match. The
system default baud rate setting is
9600. Changing the Baud Rate in
Chapter 8
Try connecting the console terminal
to the auxiliary serial port.
Operator
Control Panel
Lights The operator control panel lights (Figure 9–2) are used to
indicate the progress and result of self-tests for Fu,
memory, CPU, and I/O modules. Refer to Table 9–7 for
information on interpreting the lights and determining what
actions to take when a failure is indicated.
Troubleshooting the System 9–9