Sun Fire[TM] V445 SC Alert: Host system has shut down.

Asset ID:	1-72-1011353.1
Update Date:	2018-02-15
Keywords:

Solution Type Problem Resolution Sure

Solution 1011353.1 : Sun Fire[TM] V445 SC Alert: Host system has shut down.

Applies to:

Sun Fire V445 Server - Version All Versions and later
All Platforms

Symptoms

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Sun Fire[TM] V445 Server; The following message is displayed

"SC Alert: Host system has shut down"

Cause

Cause could be one of the three modes listed below

Solution

If the system suddenly powers OFF or you can no power up the system. There are three primary failure modes.

Failure Mode 1:
a) System suddenly powers off with no ALOM messages except "SC Alert: Host System has Reset".
b) You do have access to SC prompt( ALOM).
c) Front panel GREEN led ON and it is flashing.
d) None of the Yellow LEDs are ON the front panel or any of the PSUs that are installed.

ACTIONS:

1a. Check to see if intrusion switch opening is root cause.
Prior to issuing a poweron command, at AlOM prompt type the following

sc>fpga read 0xc10000

Example:

sc> fpga read 0xc10000
Reading 0x03c10000 0x0

1.a.1) If it is Reading 0x03c10000 = 0x0 or 0x4: Then the intrusion switch is NOT the root cause. Continue on troubleshooting (go to Action 1b & 1c).
1.a.2) If it is Reading 0x03c10000 = 0x8 or 0xC: Then double check that the top cover is properly installed. If cover is properly seated then replace the intrusion switch DO NOT SEND BACK the intrusion switch.

1b. Check all cabling between the PDB and MB. Check that all four busbar screws are properly tighten down(819-3742-11; Sun Fire V445 Server Service Manual; chapter 4; page 111). Also, check the small ribbon cable from the front I/O module to MB is properly installed (you need to pull the fan tray to check both sides of the cable)

1c. Check for any lose debris on the MB that could cause a shorting problem (like lose screw).

1d. If your ALOM code is 1.6.0 upgrade to latest ALOM version. Reset ALOM and see if system will powerup OK.

1e. If all this fails, escalate the Service Request to the next level of support.

Failure Mode 2:
a) System suddenly powers off with one or more of the ALOM messages listed in 2a.
b) Some Yellow LEDs are ON.
c) You still have SC prompt (ALOM).
d) None of the Yellow LEDs are ON any of the installed PSUs.

ACTIONS

2a. Go to ALOM and do the following command:

sc>showlog

Look for these errors in the log.

SC Alert: FAULT_SENSOR @ C1.P0.FF_POK has FAILED.
SC Alert: Access to TEMP_SENSOR @ C1.P0.T_CORE has failed.
SC Alert: Access to TEMP_SENSOR @ C1.T_AMB has failed.
Note: Yellow service LED will be ON

If any of the following errors appear in ALOM messages, trying re-seating all four cpus. If after re-seating the cpu modules these message(s) still persist, then replace the indicated FRU.

2b. If all this fails, escalate the Service Request to the next level of support.

Failure Mode 3:
a) System suddenly powers off
b) You have no ALOM response.

ACTIONS

3a. Check to see if PSU GREEN LED are off, or Yellow LED is ON.

    3.a.1) In these cases you need to consider AC power source problems or bad PSUs.
    3.a.2) Check to see if any LEDs will turn ON. If none of the LED are ON, and AC power & PSU's are OK:
       3.a.2.1) Check cabling between PDB and MB.
         3.a.2.2) Swap out the PDB. (double check leds at first ac power on)
3b. Green LED in front panel is ON but no ALOM response. Check connections to ALOM (either serial or network). If connections are OK, then remove AC power and see if ALOM will respond.
3c. If all this fails, escalate to sys-tsc-vsp.

V445, Host system has shut down, interlock
Previously Published As
90485

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