Emerson Process Management IM-106-340 Alarms EEprom Corrupt, Fault 12, EEprom Corrupt

Oxymitter 4000

Figure 8-14. Fault 12, EEprom Corrupt

	HEATER T/C
DIAGNOSTIC	HEATER	SW2
ALARMS	O2 CELL	ON
	CALIBRATION

CALIBRATION RECOMMENDED

Instruction Manual

IM-106-340, Rev. 4.0

May 2006

Fault 12, EEprom Corrupt

Figure 8-14shows the electronic assembly for an Oxymitter 4000 with a membrane keypad (upper view) and an Oxymitter 4000 with an LOI (lower view).

Membrane Keypad

When Fault 12 is detected, the O2 CELL LED flashes four times, pauses for three seconds, and repeats.

TEST

POINTS

INC INC

HIGH LOW GAS GAS

DEC DEC

O2 CELL mV +

O2 CELL mv - HEATER T/C + HEATER T/C -

CAL

TEST GAS +

PROCESS -

% O2

TP1 TP2 TP3 TP4

TP5

TP6

J1 RED YEL GRN ORG

1.	This alarm can occur if the EEprom is
	changed for a later version. At power up,
	the EEprom is not updated.
2.	To correct this problem, power down and
	then restore power. The alarm should clear.
3.	If the alarm occurs while the unit is running,
	there is a hardware problem on the
	microprocessor board.
4.	If cycling the power does not clear the
	alarm, see "Electronic Assembly
	Replacement" in Section 9: Maintenance

KEYPAD

Alarms

EEprom Corrupt

LOI 37260030

and Service.

LOI

When Fault 12 is detected, the LOI displays the "EEprom Corrupt" message. Refer to the comments and procedures in paragraphs 1 through 4 above.

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