Real-Time Clock (Rtc Reset); Troubleshooting; System Diagnostic Lights - Dell Vostro 3888 Service Manual

Real-Time Clock (RTC Reset)

The Real Time Clock (RTC) reset function allows you or the service technician to recover Dell Inspiron, systems from No POST/No
Power/No Boot situations. The legacy jumper enabled RTC reset has been retired on these models.
Start the RTC reset with the system powered off and connected to AC power. Press and hold the power button for thirty (30) seconds.
The system RTC Reset occurs after you release the power button.

System diagnostic lights

Power-supply diagnostics light
Indicates the power-supply state.
Hard-drive activity light
Turns on when the computer reads from or writes to the hard drive.
Table 4. LED codes
Diagnostic light codes
1,2
2,1
2,2
2,3
2,4
2,5
2,6
3,1
3,2
3,3
3,4
3,5
3,6
3,7
4,2
System diagnostic lights
Power-supply diagnostics light
Indicates the status of the power-supply in either of the two sates:
• Off: No Power
• On: Power is supplied.
Problem description
Unrecoverable SPI flash failure
CPU failure
System board failure, corrupt BIOS, ROM error
No memory/RAM detected
Memory/RAM failure
Invalid Memory installed
System board error, chipset error, clock failure, gate A20 failure, super I/O failure,
keyboard controller failure
CMOS battery failure
PCIe or video card/chip failure
Recovery Image not found
Recovery Image found but invalid
Power Rail Failure
Paid SPI volume error
Intel ME (Management Engine) error
CPU power cable connection issue

Troubleshooting

Troubleshooting
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