Dell OptiPlex 5060 Small Form Factor Service Manual - Page 67

Power-Supply Unit Built-in Self-Test, Diagnostics - specs

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Power-Supply Unit Built-in Self-Test Built-in Self-Test (BIST) helps determine if the power-supply unit is working. To run self-test diagnostics on the power-supply unit of a desktop or all-in-one computer, see the knowledge base article 000125179 at www.dell.com/support. Diagnostics The computer POST (Power On Self Test) ensures that it meets the basic computer requirements and the hardware is working appropriately before the boot process begins. If the computer passes the POST, the computer continues to start in a normal mode. However, if the computer fails the POST, the computer emits a series of LED codes during the start-up. The system LED is integrated on the Power button. The following table shows different light patterns and what they indicate. Table 3. Power LED summary Amber LED state White LED state Off Off Off Blinking Previous State Previous State Blinking Steady Off Off Off Steady System state S5 S3, no PWRGD_PS S3, no PWRGD_PS S0, no PWRGD_PS S0, no PWRGD_PS, Code fetch = 0 S0, no PWRGD_PS, Code fetch = 1 Notes This entry provides for the possibility of a delay from SLP_S3# active to PWRGD_PS inactive. 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 2 1 2 2 2 3 2 4 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] Table 5. States Under Host BIOS Control Amber LED state White LED state 2 5 2 6 System state BIOS state 1 BIOS state 2 Notes BIOS Post code (Old LED pattern 0001) Corrupt BIOS. BIOS Post code (Old LED pattern 0010) CPU config or CPU failure. Troubleshooting 67

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Power-Supply Unit Built-in Self-Test
Built-in Self-Test (BIST) helps determine if the power-supply unit is working. To run self-test diagnostics on the power-supply
unit of a desktop or all-in-one computer, see the knowledge base article
000125179
at
www.dell.com/support
.
Diagnostics
The computer POST (Power On Self Test) ensures that it meets the basic computer requirements and the hardware is working
appropriately before the boot process begins. If the computer passes the POST, the computer continues to start in a normal
mode. However, if the computer fails the POST, the computer emits a series of LED codes during the start-up. The system LED
is integrated on the Power button.
The following table shows different light patterns and what they indicate.
Table 3. Power LED summary
Amber LED state
White LED state
System state
Notes
Off
Off
S5
Off
Blinking
S3, no PWRGD_PS
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
Steady
Off
S0, no PWRGD_PS, Code
fetch = 0
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.
Troubleshooting
67