Service Manual

42
Diagnostics
The following table describes the POST (Power-On Self Test) diagnostic light format. For example, the power-status light blinks
amber two times followed by a pause, and then blinks white three times followed by a pause. This 2,3 pattern continues until the
system is powered o indicating no memory or RAM is detected.
Table 12. Diagnostics
Light pattern Problem description
2,1 CPU failure
2,3 No memory or RAM detected
2,4 Memory or RAM failure
2,5 Invalid memory installed
2,6 System board or chipset error
3,1 CMOS battery failure
3,2 PCI/video card failure (Edge Gateway 3003 only)
3,3 Recovery image not found
3,4 Recovery image found but invalid
The following table describes the function of each status light.
Table 13. Status-light indicators
Function Indicator Color Control Status
System Power status and
System status
Green or Amber BIOS O: System o
On (Solid Green):
System on or Boot
successful
On (Solid Amber):
Power up or boot fail
Blinking Amber: Fault or
error
WLAN or Bluetooth Green Hardware O: WLAN or Bluetooth
module is o
On: WLAN or Bluetooth
module is on
Cloud Green Software O: No connection to
the cloud device or
service
On: Edge Gateway
connected to a cloud
device or service
67