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Hydrastep 2468CB and 2468CD Manual Relay Output Board Option
24685034 3a-15
3A.4 COMPONENT REPLACEMENT
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.
3A.4.1 REPLACEMENT OF NYLON SPACERS
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.
3A.4.2 PARTS LIST - RELAY OUTPUT BOARD 24680504
The following list items are available as spare parts:
Item Description
Mobrey Part
Number
Item Description
Mobrey Part
Number
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