What To Do When The Powerup Led Indicator Is Inactive; Interpreting Diagnostic Led Indicator During 2Nd - DEC Personal DECstation 5000 User Manual

13.6 Understanding the Powerup Self-Test Sequence and the LED Display
Table 13–5 (Cont.) Interpreting Diagnostic LED Indicator During First 30 Seconds
After Power-Up (Firmware Initialization Period)
LED Function
One long flash followed by
two short flashes
Actual test time will vary depending on the memory and the
TUROBchannel options which have been installed.
Table 13–6 Interpreting Diagnostic LED Indicator During 2nd 30 Seconds Following
First Video (Power-Up Self-Test Period)
LED Function
LED stays on continuously

13.7 What to Do When the Powerup LED Indicator is Inactive

Sometimes the single powerup indicator of the Personal DECstation is itself
not working.
When the powerup indicator is inactive, it means one of the three following
parts are defective:
• Power supply
• CPU daughter card
• System module
To determine if the power supply is defective, turn on the power supply and
place an Ethernet loopback connector (12-22196-01) on the Ethernet port
(shown as slot number 10 in Figure 13–3. The LED in the loopback connector
will glow when the power supply is generating correctly regulated DC power.
Meaning
tty (Serial line input/output) connected
to the Personal DECstation's RS232
port has been selected as the firmware's
console device: system is configured as a
server.
Note
Meaning
Firmware test sequence has completed
without detection of any errors.
Troubleshooting
Corrective Action
None, unless you were
expecting a workstation
configuration, in which
case you should
troubleshoot the
SERIAL.bus keyboard.
Corrective Action
None.
Troubleshooting 13–13