System Leds; Interlock Leds - HP PROLIANT 8500 Troubleshooting Manual

SYSTEM LEDs:

Table 1 – 2: Processor and I/O board LEDS
On the I/O Board:
(In front of PCI slot 1)
Silk screen
Aux 5v
+12v
5V
+3.3v
+2.5v
VTT
ROC 2
ROC 3
ROC 4
ROC 5
ROC 6
NOTE: If any of the voltages are missing on the System I/O board, the system will not come out of
reset (won' t boot)
The voltage level LEDs are an indication that the voltage rail is present when ON (green). The Aux 5v
should be present all the time the power cord is plugged in and connected to facility power.

• INTERLOCK LEDs:

Interlock circuitry exists to pinpoint missing or unseated processor, VRM, memory board, or I/O
module. (NOTE: Chassis panels are not connected to interlocks). The interlock LEDs can be view on
the top of the system along with their corresponding label.
• I/O BOARD LEDs:
Definitions to be added later.
• PORT 84 LEDs:
Port 84 LEDs will not be populated on production machines. If a PCI Port 84 card is being used, it
must be installed in one of the primary/compatibility bus slots 7, 8 or 9.
CAUTION: Be aware that whenever power is applied to the system (power cord plugged in), even
when the power switch is OFF, there is +5v power on inside the system. The AUX 5V
power is ON anytime the power supply is plugged in and the AUX 5V LED on the I/O
board should also be ON to indicate its presence. This should also provide power for the
IMD, which should also be ON.
• HOT PLUG PCI SLOT LEDS:
Each hot plug PCI slot is accompanied with an LED to indicate whether it' s active. If the LED is not
ON it could mean one of two things. First the hot plug latch must be in the down position and second
it must not be disabled in software.
CR47
CR1
CR2
n/a
n/a
n/a
CR6
CR5
CR4
CR7
CR8
:
On the Processor Board:
(Behind processor 1 and 2. Impossible to view )
n/a
CR505
CR504
CR501
CR503
CR502
n/a
n/a
n/a
n/a
n/a
2