Seagate ST336854FC, ST3146954FC manual LED connections, Physical interface, LED indicator connector

Models: ST336854FC ST373554FC ST3146954FC

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8.2LED connections

8.2LED connections

A connector, J6, is provided on the printed circuit board assembly (PCBA) to provide port bypass, drive active, and drive fault LED connections (see Figure 15). See Sections 9.5.7, 9.5.8, and 9.5.9 for descriptions of LED functions.

J6

Figure 14. Physical interface

Drive

Front

Pin 1

J6

Reserved

Port A Bypass LED [1]

Port B Bypass LED [1]

Fault LED [1]

Reserved

Active LED [2]

Reserved

+5V

Active LED [1]

Ground [3]

[1]The drive has a 2.2K ohm resistor in series with this LED driver. Tie the minus side of an external high-effi- ciency LED (i.e., 2ma) to this pin. Connect the plus side of the LED to +5V.

[2]An external current-limiting resistor is required when connecting an LED to this pin. The minus side of the resistor/LED combination is connected to this pin. Connect the plus side to +5V.

[3]Jumper storage location (across pins 2 and 4).

Figure 15. LED indicator connector

44

Cheetah 15K.4 FC Product Manual, Rev. B

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Seagate ST336854FC, ST3146954FC, ST373554FC manual LED connections, Physical interface, LED indicator connector