Dell OptiPlex 5070 Small Form Factor Service Manual - Page 67

Amber LED state, White LED state, System state, Notes, Table 4. Amber LED blinking failures - specs

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Amber LED state Off Previous State Blinking White LED state Blinking Previous State Off Steady Off Off Steady Table 4. Amber LED blinking failures Amber LED state White LED state 2 1 2 2 2 3 2 4 Table 5. States Under Host BIOS Control Amber LED state White LED state 2 5 2 6 2 7 System state S1, S3 Notes System is in a low power state, either S1 or S3. This does not indicate a fault condition. S3, no PWRGD_PS S0, no PWRGD_PS This entry provides for the possibility of a delay from SLP_S3# active to PWRGD_PS inactive. Boot Failure - The computer is receiving electrical power, and power supplied by the power supply is normal. A device might be malfunctioning or incorrectly installed. Refer to the table below for Amber Blinking Pattern diagnostics suggestion and possible failures. S0, no PWRGD_PS, Code fetch = 0 Boot Failure - This is a system fault error condition, including the power supply. Only the +5VSB rail on the power supply is working correctly. S0, no PWRGD_PS, Code fetch This indicates that the host = 1 BIOS has started to execute and the LED register is now writable. System state Bad MBD Bad MB, PSU or cabling Bad MBD, DIMMS, or CPU Bad coin cell Notes Bad MBD - Rows A, G, H, and J from table 12.4 of SIO Spec Pre-Post indicators [40] Bad MBD, PSU or PSU cabling Rows B, C and D of table 12.4 SIO spec [40] Bad MBD, DIMMS or CPU Rows F and K from table 12.4 of SIO spec [40] Bad coin cell - Row M of table 12.4 in SIO spec [40] System state BIOS state 1 BIOS state 2 BIOS state 3 Notes BIOS Post code (Old LED pattern 0001) Corrupt BIOS. BIOS Post code (Old LED pattern 0010) CPU config or CPU failure. BIOS Post code (Old LED pattern 0011) MEM config in process. Appropriate mem modules detected but failure has occurred. Troubleshooting 67

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Amber LED state
White LED state
System state
Notes
Off
Blinking
S1, S3
System is in a low power state,
either S1 or S3. This does not
indicate a fault condition.
Previous State
Previous State
S3, no PWRGD_PS
This entry provides for the
possibility of a delay from
SLP_S3# active to PWRGD_PS
inactive.
Blinking
Off
S0, no PWRGD_PS
Boot Failure - The computer is
receiving electrical power, and
power supplied by the power
supply is normal. A device might
be malfunctioning or incorrectly
installed. Refer to the table
below for Amber Blinking
Pattern diagnostics suggestion
and possible failures.
Steady
Off
S0, no PWRGD_PS, Code fetch
= 0
Boot Failure - This is a system
fault error condition, including
the power supply. Only the
+5VSB rail on the power supply
is working correctly.
Off
Steady
S0, no PWRGD_PS, Code fetch
= 1
This indicates that the host
BIOS has started to execute and
the LED register is now writable.
Table 4. Amber LED blinking failures
Amber LED state
White LED state
System state
Notes
2
1
Bad MBD
Bad MBD - Rows A, G, H, and J
from table 12.4 of SIO Spec -
Pre-Post indicators [40]
2
2
Bad MB, PSU or cabling
Bad MBD, PSU or PSU cabling -
Rows B, C and D of table 12.4
SIO spec [40]
2
3
Bad MBD, DIMMS, or CPU
Bad MBD, DIMMS or CPU -
Rows F and K from table 12.4 of
SIO spec [40]
2
4
Bad coin cell
Bad coin cell - Row M of table
12.4 in SIO spec [40]
Table 5. States Under Host BIOS Control
Amber LED state
White LED state
System state
Notes
2
5
BIOS state 1
BIOS Post code (Old LED
pattern 0001) Corrupt BIOS.
2
6
BIOS state 2
BIOS Post code (Old LED
pattern 0010) CPU config or
CPU failure.
2
7
BIOS state 3
BIOS Post code (Old LED
pattern 0011) MEM config in
process. Appropriate mem
modules detected but failure has
occurred.
Troubleshooting
67