Module Leds On Power-Up - Digital Equipment AlphaServer 4000 Configuration And Installation Manual

Table 7–2 Module LEDs on Power-Up
LED
CPU Module
DC OK
SROM Oscillator
CPU Self-Test Pass
REGULATOR_OK
Base Bridge Module
IOD0 Self-Test Pass
IOD1 Self-Test Pass
Optional Bridge Module
IOD2 Self-Test Pass
IOD3 Self-Test Pass
POWER FAN OK
TEMP OK
Power Control Module
DCOK SENSE
PS0 OK
PS1 OK
PS2 OK
TEMP OK
CPUFAN OK
SYSFAN OK
CS FAN0
CS FAN1
CS FAN2
C FAN3
If a system drawer does not power up, the problem may be a disconnected power
cord, a fan, or a cover interlock. Check the following:
•
In a pedestal system, is the AC power strip breaker on?
•
In a cabinet system, is the AC input box breaker on? Are the cabinet fans
running? Check the green FAN LED on the fan tray. Is it on?
•
Is the system drawer power cord(s) plugged into the AC power strip?
•
Are the covers on the system drawer closed and the interlocks engaged? The
cover interlocks must be engaged to enable power-up.
Power-Up State Description
On DC power is OK.
Off SROM loaded into processor.
On Processor chip passed SROM tests.
On Regulator is working.
On Bridge module passed SROM tests.
On Bridge module passed SROM tests.
On Power fan is running.
On Bridge module temperature is OK.
On DC power is okay.
On First power supply is operating.
On (if present) Second power supply is operating.
On (if present) Third power supply is operating.
On Temperature is OK.
On CPU fans are OK.
On System fans are OK.
Blinking Fan is OK.
Blinking Fan is OK.
Blinking Fan is OK.
Blinking Fan is OK.
System Power-Up and Verification 7-11