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
off 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 Off: System off
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 Off: WLAN or Bluetooth
module is off
On: WLAN or Bluetooth
module is on
Cloud Green Software Off: No connection to the
cloud device or service
On: Edge Gateway
connected to a cloud
device or service
Blinking Green: Activity to
a cloud device or service
LAN (RJ-45) Link Green/Amber Driver (LAN) Off: No network link or
cable is not connected
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