Emerson 2468CB, 2468CD manual 4.7COMPONENT REPLACEMENT, 4-16, Item, Mobrey Part Number

Remote Display Options 24683B, C & D Hydrastep 2468CB & 2468CD Manual

4.7COMPONENT REPLACEMENT

Hydrastep remote display units contain no user-replaceable electronic components. Board failure requires the faulty PCB to be removed and returned for service and a serviceable PCB to be fitted in its place. A list of replacement parts is given in Table 4.2.

The procedure for replacing a PCB in a remote display is:

1.Ensure that the Hydrastep 2468 unit is switched off.

2.Gain access to the interior of the remote display unit. The method depends on the type of remote display being serviced:

For a 24683B: Remove the cables from terminal block TB1 at the rear of the unit. Remove the clamps. Withdraw the unit from the front of the mounting panel and lay on a clean surface. Pull off the bezel from the unit front panel, unscrew and remove the side panel, and lift off the front and rear panels, and use a suitable flat bladed screwdriver to prise apart the PCB interconnecting edge connectors. Both PCBs can now be removed from their securing slots in the unit case.

For a 24683C: Remove the cables from terminal block TB1 at the rear of the unit. Remove the clamps. Withdraw the unit from the front of the mounting panel and lay on a clean surface. Remove the front and rear panels. Both PCBs can now be removed from the unit case.

For a 24683D: Remove the unit clear cover and the front panel. The LED display and the decode PCB can now be accessed and it can easily be seen which screws and connections it is necessary to remove in order to remove the faulty board(s).

3.Fit the serviceable PCB(s), following the reverse order to that given in step 2.

Item

For 24683B:

LED PCB assembly Decode PCB assembly

Header (for 8-16, 18-32 electrode operation) Holding bar (two off, with two knurled knobs)

For 24683C:

LED PCB assembly Decode PCB assembly

Header (for 8-16, 18-32 electrode operation)

For 24683D

LED PCB assembly Decode PCB assembly

Header (for 8-16, 18-32 electrode operation)

Mobrey

Part Number

24680514A

24680513B

399100390

460202260

24680519A

24680520A

460202260

24680521A

24680522A

460202260

Table 4.2 - Remote Display Replacement Parts

4-16 24685034