© National Instruments Corporation

15

NI USB-622x/625x/628x OEM User Guide

Replacing Fuses

USB-622x/625x/628x OEM devices have a replaceable T 2A 250V

(5

× 20 mm) fuse that protects the device from overcurrent through the

power connector.

(USB-628x Devices Only)

USB-628x OEM devices also have a replaceable

F 2A 125V fuse that protects the device from overcurrent through the +5 V

terminal(s).

Replacement fuse information can be found in Table 1. To replace a broken

fuse in USB-622x/625x/628x OEM devices, complete the following steps.

1.

Power down and unplug the device.

2.

Replace the broken fuse while referring to Figure 13 for the fuse

locations.

Figure 13. USB-622x/625x/628x OEM Fuse Locations

1

T 2A 250V (5 x 20 mm) Fuse

2F

2A 125V Fuse on USB-628x OEM Devices

2

1