Measurement Computing WBK Options - Manual (Page 161)

Fuse Replacement
CAUTION
Turn OFF the power to, and UNPLUG the WBK25 Ethernet Interface Module and all
connected equipment. Electric shock or damage to equipment can result even under
low-voltage conditions.
Take ESD precautions, to include using a grounded wrist strap.
Use care to avoid touching board surfaces and onboard components. Ensure boards
do not come into contact with foreign elements such as oils, water, and industrial
particulate.
You should only replace a fuse if your device shows no sign of damage. If your device
appears damaged, such as evidenced by a “smoked” component, contact the factory as
soon as possible.
If the replacement fuse blows contact the factory as this indicates a problem may
exist with your WBK25 module.
Each WBK25 Ethernet Interface Module has one user-replaceable fuse designated as F201.
F201 Input Power Fuse. 4.0 A, MINI ATO.
This 4-amp fuse is located near the rear panel’s 5DIN POWER IN connector.
If this fuse has blown, the WBK25 module will not power up.
Factory Part Number: FU-8-4
Littelfuse Part Number: 297-004, Littelfuse Body Color Code: Pink
You will need the following:
Phillips Screwdriver •
•
•
•
3AG Fuse Puller, or needle-nose pliers*
Grounding wrist strap and associated anti-static pad
Replacement fuse F201
*
Needle-nose pliers can be used to pull MINI ATO fuses; but should not be used to insert fuses.
1. If you have not already done so, turn OFF the power to, and UNPLUG the WBK25 module
and all connected equipment. Remove all lines from the unit.
2. Using a Phillips screwdriver, remove the 4 cover plate screws and the cover plate (not shown).
WBK25, Fuse and Cover Plate Screw Locations
Cover Plate
Screws (2 of 4)
Cover Plate
Screws (2 of 4)
Fuse F201
WBK25, pg. 16 919896 WBK25 Ethernet Interface Module User’s Guide