NI PXI-2584 Relay Replacement

The NI PXI-2584 uses reed relays.

Refer to the following table for information about ordering replacement relays.

Complete the following sets of steps to disassemble your switch module, replace a failed relay, and reassemble your switch module.

Disassemble the Switch Module

1. Ground yourself using a grounding strap or a ground connected to your PXI chassis.

   Note  Properly grounding yourself prevents damage to your switch module from electrostatic discharge.

2. Remove the four screws that secure the plastic cover on the top and plastic lead cover on the bottom of the switch assembly.
   
   

   1 Screws 2 Plastic Cover 3 Plastic Lead Cover

3. Carefully separate the adhered top cover absorber from the relays by slowly prying up on the cover. (Note: some metal relay caps might come loose during this process and can be put back onto the relays after you have completed relay replacement.)
4. Locate the relay you want to replace. Refer to the following figure and table for relay locations.
   
   

   Channel Name	Relay Name
   CH0	K0
   CH1	K1
   CH2	K2
   CH3	K3
   CH4	K4
   CH5	K5
   CH6	K6
   CH7	K7
   CH8	K8
   CH9	K9
   CH10	K10
   CH11	K11

Replace the Relay

Make sure you have the following:

• Temperature-regulated soldering iron set to 300 °C
• 60/40 Lead/Tin solder (flux core)
• Solder wick
• Isopropyl alcohol
• Cotton swabs

Replace the relay as you would any other through-hole part. Trim the replaced relay leads to under 0.05 inch protrusion.

Reassemble the Switch Module

Replace the top cover while carefully aligning the standoffs with the mounting holes in the module. Secure the bottom cover using the four screws removed in Disassemble the Module, step 2.

Tip  In NI-SWITCH 3.1 or later, you can use the Switch Soft Front panel to reset the relay count after you have replaced a failed relay.