Service manual

Troubleshooting 3-9
Table 3-1 Power Control Module LED States
LED State Description
DCOK_SENSE
On Both +5.0V and +3.43V are present and within limits.
PS0_OK
On Power supply 0 is present and has asserted POK_H.
PS1_0K
On
Off
Power supply 1 is present and has asserted POK_H.
Power supply 1 not present.
PS2_OK
On
Off
Power supply 2 is present and has asserted POK_H.
Power supply 2 not present.
TEMP_OK
On The system temperature is below 55° C.
CPUFAN_OK
On
Off
All CPU fans are OK.
A CPU fan has failed. The specific fan is identified by the
CS_FANx or C_FAN3 LED that remains lit.
SYSFAN_OK
On
Off
All system fans are OK.
A system fan has failed. The specific fan is identified by
the CS_FANx that remains lit.
CS_FAN0
On
Off
CPU fan 0 and system fan 0 are being sampled or one of
them has failed as indicated by CPUFAN_OK and
SYSFAN_OK.
CPU fan 0 and system fan 0 are not being sampled and are
functioning properly.
CS_FAN1
On
Off
CPU fan 1 and system fan 1 are being sampled or one of
them has failed as indicated by CPUFAN_OK and
SYSFAN_OK.
CPU fan 1 and system fan 1 are not being sampled and are
functioning properly.
CS_FAN2
On
Off
CPU fan 2 and system fan 2 are being sampled or one of
them has failed as indicated by CPUFAN_OK and
SYSFAN_OK.
CPU fan 2 and system fan 2 are not being sampled and are
functioning properly.
C_FAN3
On
Off
CPU fan 3 is being sampled or has failed as indicated by
CPUFAN_OK and SYSFAN_OK.
Off CPU fan 3 and system fan 3 are not being sampled and
are functioning properly.