2BCooling Sub-System
Intel® Server System SR2500AL
Revision – 1.6
Intel order number D31980-009
22
•
Each fan has an associated fault LED on the mid-plane located next to the fan header.
In the event of a fan failure, the fault LED for the failing fan can be illuminated by system
management.
Table 14. Non-redundant Fan Connector Pin Assingment
Pin
Signal Name
Description
1 Tachometer
B
Reserved,
unused by the non-redundant fan
2
PWM
Fan speed control signal
3
12V
Power for fan
4
12V
Power for fan
5
Tachometer A
Fan RPM sensor output
Two pulse per revolution for the 80mm fan
Four pulses per revolution for the 60mm fan
6
Return
Return path to ground
7
Return
Return path to ground
8 Fan
Presence
Reserved,
unused by the non-redundant fan
9
LED Cathode
Loopback signal to pin 10
10
LED Anode
Loopback signal to pin 9
The system fans plug into headers on the mid-plane board according to the following diagram.
Figure 16. Non-Redundant Fan Header Assignments on Mid-plane
Summary of Contents for SR1500 - AXXMINIDIMM DDR-2 RAID Controller Cache Memory
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