TD140 Hardware Maintenance Guide 7.13.2
14
2
TD140 Chassis Subsystem
Rev. 001-140228
Front Panel LEDs
Four LEDs on the front panel indicate the operational status of the ShMC.
describes
the ShMC operational states represented by the four front panel status LEDs.
Backplane
The six-slot ATCA monolithic backplane provides these features:
Four ATCA node slots
Two ATCA hub slots
Two dedicated RCM slots
Two PEM slots
Two fan tray slots
Fan Trays
The platform contains two hot-swappable fan trays that force air through the platform for
cooling. Each fan tray contains blowers and circuitry that controls their speed. The fan trays
slide into the left and right sides of the chassis. Each fan tray is individually hot-swappable.
To deliver maximum air flow to modules installed in the chassis, the TD140 contains two
interchangeable fan trays located on either side of the chassis card cage.
Each fan tray contains six high-speed, high airflow fans that are controlled as a group by the
IPM controller in the fan tray.
Table 2.2 - Status LEDs
LED
Color
State
Explanation
Out of Service
(OOS)
Red
On
Out of service. Indicates a problem has been
detected on the ShMC that prevents it from
operating properly.
Off
Operating normally.
Power Good
(PWR)
Green
On
ShMC power supplies are within their
respective operating ranges.
Off
Power is bad from one or more supplies.
Active (ACT)
Amber
On
Active (performing assigned application)
indicates the ShMC is the active shelf
manager, instead of the standby backup unit.
Off
Standby.
Hot Swap (H/S)
Blue
Steady
Ready for hot swap.
Blinking
Transitioning.
Off
Running.
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