DEC DECstation 316+, Service Manual, Page: 30 / 94

2–6 Troubleshooting
7. If the system powers up and boots refer to Section 2.4.4.
2.4.3 System Does Not Boot
This procedure helps determine why the DECstation does not
boot. Before starting this procedure be sure you have done the
steps in Section 2.4.1.
1. Remove any third party options and try to reboot the system.
If the system generates any beep codes refer to Section 2.5.1,
Power Up Beep Codes.
2. Try booting from the operating system startup diskette.
a. If the system does not boot verify that all jumpers are set
correctly. Reboot the system after verifying the jumper
settings.
b. Lack of beep codes and video indicate a possible bad main
logic board.
c. If the system still does not boot remove all options and try
to boot the system.
d. Replace the Digital certified options one at a time and see
if the system powers up and boots each time an option is
replaced or a disk drive is reconnected.
3. When the system boots refer to Section 2.4.4.
2.4.4 System Boots
The DECstation can have a problem but still boot on power-up.
This procedure helps determine the problem with a DECstation
that boots but still emits error beep codes or displays an error
message. Before starting this procedure be sure you have done
the steps in Section 2.4.1.
CAUTION
The system must be disconnected from any network before
running the Diagnose diagnostics.
1. Determine what the failure is. Refer to Section 2.5 for a list of
possible error messages. If there are no error messages refer
to Section 2.6 for a list of symptoms and possible causes.