Technical data

Problem Possible Cause Corrective Action
Power switch tripped to
0. (BA215: Circuit
breaker tripped.)
Wait 1 minute, then set Power switch
to 1. (BA215: Set Power switch to
0, push Reset button, and set Power
switch to 1.) If problem persists, call
your Digital service representative.
Power cable incorrectly
installed.
Set Power switch to 0. Check that
cable is seated in socket. Set Power
switch to 1.
DC OK indicator not lit. Power Control Bus cable
connected to Secondary
In (SI) connector on
BA400-series power sup-
ply.
Turn on system or expander connected
to Power Bus Out (MO) connector on
power supply.
B213F expander not
turned on (BA400-series
system).
Turn on expander.
Power supply or module
failure.
Call your Digital service representa-
tive.
System has power; LED
on CPU cover panel
counting down; nothing
displays on console ter-
minal.
Console terminal turned
off.
Turn on console terminal.
Console terminal off line. Put terminal on line as described in
terminal manual.
Console terminal cable
incorrectly installed.
Make sure cable is installed at both
ends.
Console terminal setup
not done correctly.
Reread setup instructions in terminal
manual.
Baud rate setting of
system and terminal do
not match.
Set terminal baud rate to match
system.
Power-Up Mode switch
on CPU cover panel set
to T.
Set that switch to Run (arrow).
Terminal defective. Turn off terminal and turn it on
to see if it passes self-tests. If it
fails self-tests, call your Digital service
representative.
1–2 VAX 4000 Model 200 Troubleshooting and Diagnostics