Specifications

System Chassis and Sub-Assemblies QSSC-S4R Technical Product Specification
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10.2.2.2 Fan Module Functional Block Diagram
Figure 40. Fan Module Functional Block Diagram
10.2.2.3 Connector Signal Description and Pinouts
The fan module sends fan signals via a 2x3 connector to the front panel fan board (FPFB) as shown in the below table.
Table 36. Fan Module Connector Signal Description and Pinouts
Pin Signal Description Pin Signal Description
1 GND 4 FAN_PWMx
2 12V 5 FAN_PRSNTx_N
3 FAN_TACHx 6 LED_FANx_FAULT
10.2.2.4 LED Functionality
Table 37. LED Definition
LED Color/Behavior State
Fan#1, 2, 3, 4, 5, 6, 7, 8
Amber – On Fan Failed
Off Fan working correctly
10.3 Main Board Subsystem
The main board mounts to a sheet metal tray and is fixed on top of the PSU bay top plate with several tab hooks, as
shown in Figure 41. Main Board Mount Structure & Strengthened CPU Heat-sink. There is a stiffener mounted on the
reserve side of the mainboard to provide stiffness. The main board assembly is mounted in the chassis via slot and tab
hooks and secured by six captive screws. These captive screws are also used to fix the chassis mid-brace onto the
main board.