Emerson Process Management 3000 - Manual (Page 133)

Instruction Manual
Appendix B Rev. 2.2
January 1997
Rosemount Analytical Inc. A Division of Emerson Process Management Appendices B-9
World Class 3000
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.
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.
B