TYAN FT48T-B7105, Service Engineer'S Manual

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Power LED Definitions
Bicolor
Power Supply condition Green LED Amber LED
No AC power to all power supplies OFF OFF
Power supply critical event causing a shutdown;
failure, OCP, OVP, Fan Fail, OTP, UVP OFF Amber Solid ON
Power supply warning events where the power
supply continues to opeate; high temp (inlet
temperature>51 deg (PMBus reading), or hot spot
temperature >95 deg (PMBus reading), high power,
high current, slow fan (Fan w/- 20% RPM) OFF Amber Blinking
@1Hz
AC present Only 12VSB on (PS off) or PS in Smart
Redundant state Green Blinking
@1Hz OFF
Output ON and OK Green Solid ON OFF
AC cord unplugged or AC power lost with a second
power supply in parallel still with AC input power OFF Amber Solid ON