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ERROR AND STATUS DISPLAYS
The 204 is equipped with a diagnostic software program that tests various portions of the
indicator's circuitry and verifies proper operation. Should a problem be detected, an error or
status message will be displayed alerting the operator to that condition. The following lists
these errors and status displays and their meaning:
Display
-UnS-
Motion is present when the 204 is attempting to perform one of the
following operations: Power Up Zero or Zero Weight Display
Attempting to display a negative number greater than –99,999 or a
-OF-
positive number greater than 99,999
Scale weight exceeds scale capacity
-OCAP-
Indicates improper stored calibration data, calibration is necessary.
CALib
Ad Err
The analog to digital circuit has failed. Consult the scale service
representative.
The analog to digital sample is invalid.
Err A
ErrAL
The load cell input is below the range of the indicator.
The load cell input is above the range of the indicator.
ErrAH
NOVRAM failure. Consult the scale service representative.
EE Err
-trL-
Indicates an attempt to zero a weight outside the scale zero range.
(See Four Percent Zero Tracking Range Limit).
Indicates the remaining battery voltage expressed as a percentage (%)
battry
of the total battery voltage.
Attempting to switch to Net mode without a tare value.
nOtArE
General error, invalid keypad entry was attempted.
-Err-
OFF
Displayed to indicate the 204 is turning off.
BEFORE YOU CALL FOR SERVICE
The 204 has been designed to provide you with years of trouble-free operation. In spite of this,
troubles sometimes happen. Before calling for service assistance you should make some
initial checks to verify that a problem does exist. The following describes several types of
symptoms along with suggested remedies.
Problem
Display does not
turn on
Incorrect weight
displayed
Indicator will not
display weight
8555-M313-O1 Rev H • 204 Installation & Technical
Possible Solutions
AC Operation:
Is the AC power cord fully inserted into the wall receptacle? Check
wall receptacle for proper AC power. Try another electrical appliance
in the same receptacle, does it work? Check the circuit breaker. Has
there been power failure?
Battery operation:
Check if batteries are installed and correctly. Are batteries
discharged? Replace if Alkaline or recharge if NI-CAD or NiMH.
Has the indicator been calibrated? Insure that the scale platform isn't
touching an adjacent object. Check the load cell connector wiring. If
using four (4) wire load cells, insure the sense lead jumpers (J1 & J2)
are installed. If using a low dead-load scale, install the dead load
boost jumper, J3. Have proper operation procedures been followed?
Refer to Error and Status Display section and make certain that the
O CAP message is not displayed. If so, and scale is not loaded,
perform the calibration sequence.
Meaning
21
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