Instruction Manual
748441-D
April 2002
5-28 Maintenance and Service
Rosemount Analytical Inc. A Division of Emerson Process Management
Model CAT100
o. Replacing
the
EPROM
1. It may be necessary to replace the
EPROM if it becomes faulty or if a
change to the internal program is nec-
essary or desired.
2. Remove the analyzer from the enclo-
sure (see Section 5-2a, page 5-3)
3. Remove the analyzer cover (see Sec-
tion 5-4b, page 5-16)
4. On the BKS circuit board (Figure 5-20,
page 5-28):
a. Remove
jumper
J7.
b.
Note the orientation of the
EPROM in the socket. Remove
the EPROM from its socket at
D30, being careful not to dam-
age it.
c.
If the Pressure Sensor option
(BAF 01) is installed, the
EPROM is located on the BAF
circuit board.
d.
Correctly orient the new EPROM
with respect to the socket before
re-insertion. The EPROM is in-
serted correctly if the half-moon
mark is facing the front panel of
the analyzer as shown in Figure
5-20, page 5-28.
e.
Reconnect the jumper J7.
5. Reconnect that analyzer to the power
source and switch it on. The display will
chow a flashing “batt.”
6. All data will have been restored to de-
fault values. All user and application
data, such as system parameters, lim-
its, etc., must now be re-entered.
7. A complete re-calibration of the ana-
lyzer (see Section 3-4, page 3-12) must
be performed after an EPROM re-
placement.
Figure 5-20. BKS PCB Location of EPROM and
Battery Buffer Jumper (J7)
BAF 01
(option)
J7
D30
Front Panel
X16
X18
