Emerson 3000 manual World Class, B-9DAUGHTER BOARD REPLACEMENT

World Class 3000

Instruction Manual

Appendix B Rev. 2.2 January 1997

i.Making a note of the location and color of each wire, disconnect wires from terminal strip on mother board.

j.Remove four screws (9) holding mother board to stand offs (10) on subplate (14).

k.Remove mother board (12).

l.Position new mother board on stand offs and reinstall screws removed in step j.

m.Reconnect wires to terminal strip in posi- tions noted in step i.

n.Reinstall four stand offs removed in step h. Position daughter board on stand offs and reinstall stand offs removed in step g.

o.Plug ribbon cable back into receptacle on daughter board. Reinstall terminal covers.

p.Reinstall transformer, tightening hex nut only enough to hold transformer firmly in position. Reconnect transformer harness plug to mother board.

q.Reinstall HPS cover.

B-9 DAUGHTER BOARD REPLACEMENT

When turning power off at the HPS, also turn off the respective probe at associated electronics. When service on the HPS is completed, restore power at the HPS and the associated electronics.

a.Turn off power to system.

b.Loosen captive screws retaining HPS cover.

Remove cover. B

c.Remove screws on either side of terminal strip covers (2, Figure B-7). Remove termi- nal strip covers (4 and 8).

d.Making a note of the location and color of each wire, disconnect wires from the termi- nal strip on the daughter board (7).

e.Unplug ribbon cable from receptacle on daughter board.

f.Unscrew two stand offs from daughter board. Remove daughter board (7).

g.Position new daughter board on four stand offs on mother board. Reinstall the stand offs removed in step f.

h.Plug ribbon cable into receptacle on daughter board.

i.Reconnect wires to terminal strip in posi- tions noted in step d. Reinstall terminal covers.

j.Reinstall HPS cover.

Rosemount Analytical Inc. A Division of Emerson Process Management Appendices B-9