Emerson 2468CD Manuale Utente

Hydrastep 2468CB and 2468CD Manual 

Relay Output Board Option 

 

 

 

The relay board contains no replaceable circuit components, failure of the board requires 
replacement of the entire board.  The only component that can be replaced is the nylon spacer. 
 

The replacement of nylon spacers fitted to the output board requires access to the non-
component side of the PCB. 
 
Note:  Spacers will only be fitted on the output board if a second output board is to be fitted 

or has been fitted. 

 
The spacers are secured in their holes by nut and nylon washer.  To carry out a spacer 
replacement, the output board has to be removed from the input board.  The procedure 
adopted is: 
 

 

WARNING 

Mains voltages are present in this instrument when power 
is connected.  De-energise before opening front cover. 

 
1.  Isolate the 2468 electronic enclosure from the power supply. 
 
2.  Gain access to the PCBs and undo sufficient connections for the removal of the output 

board containing the defective spacer. 

 
3.  Remove the output board(s) by applying pressure 

to the upper spring-loaded spigots and easing the 
output board off its spacers and out of its Berg 
plug/socket connection. 

 
4.  Undo the nut and washer securing the faulty 

spacer and extract it from its hole, see inset 
diagram. 

 
5.  Fit the new spacer in position, align correctly on 

the board and secure firmly using the M4 nut and 
nylon washer. 

 
6.  Refit the PCB(s) into the enclosure, re-connect 

the PCB(s) as required and close the enclosure 
cover.  Re-apply the power. 

 

The following list items are available as spare parts: 

Electrical: 

Relay PCB assembly: 

  Socket 5K2 free (8-way)  

  Socket 5k3 free (8-way) 

 

24680504C 

351508100 

351503100 

Mechanical: 

Spacer, nylon 15.9 LG 
Washer, nylon 
Nut, M4 

 

412012080 
411999910 
410031020