TD140 Hardware Maintenance Guide 7.13.2
20
2
TD140 Chassis Subsystem
Rev. 001-140228
Blade Slots
The chassis provides six front and rear slots for 6 blades and their Rear Transition Modules
(RTMs).
Slots 1 and 2 are reserved for PPM40s and their RTMs.
Slots 3-6 are currently not used and have filler plates installed.
Airflow Management Panels
If any front or rear slots are not occupied, airflow management panels must be installed to seal
the card cage opening. The airflow panels perform these functions:
Restrict the flow of air into unused slots so the balance of available airflow is directed
to pass through occupied slots instead.
Maintain the Electromagnetic Interference (EMI)/ Radio-Frequency Interference (RFI)
integrity.
The panels use the card guide features in the card cage for alignment and retention within the
space. They also have face panels with thumbscrews, consistent with a standard module, but
do not have ejector latches.
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