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TVME8240 User Manual Issue 1.2.9
Page 57 of 70
9.3 LEDs
During board reset all LEDs are ON.
9.3.1 FAIL LED
The FAIL LED (Red) can be set by software control via the Utility LED Register to indicate a failure
condition.
9.3.2 FUSE LED
The FUSE LED (Red) is set by hardware control if any of the on board resettable fuses triggers.
There is one resettable fuse for each of the following power supplies:
•
IP Slot A/B +5V
•
IP Slot C/D +5V
•
IP Slot A/B/C/D +12V
•
IP Slot A/B/C/D -12V
•
VME P2 LAN +12V
9.3.3 ACT LED
The ACT (Activity) LED (Green) is set by hardware control if there is any activity on the Local Memory
bus or PCI bus.
9.3.4 SYS LED
The SYS (System Controller) LED (Green) is set by hardware control if the Universe (VME-PCI
Bridge) is the VME bus System Controller.