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EN-70
8.3 Troubleshooting
SYMPTOM
EEP Error
Unit will not turn on.
Cannot zero the Scale, or
will not zero when turned
on.
Unable to calibrate.
Cannot display weight in
desired weighing unit.
Cannot change menu
settings.
Error 8.1
Error 8.2
Error 8.3
Error 8.4
Error 8.6
Error 8.8
Error 8.9
Error 9.5
Battery symbol flashing
CAL E
NO.SW
REF WT Err
8.4 Service Information
If the troubleshooting section does not resolve your problem, contact an authorized OHAUS Service
Agent. For Service assistance in the United States, call toll-free 1-800-526-0659 between 8:00 AM
and 5:00 PM Eastern Standard Time. An OHAUS Product Service Specialist will be available to assist
you. Outside the USA, please visit our website www.ohaus.com to locate the OHAUS office nearest
you.
Find Quality Products Online at:
TABLE 8-1 TROUBLESHOOTING
PROBABLE CAUSE (s)
EEPROM Checksum Error
Power cord not plugged in or properly
connected.
Power outlet not supplying electricity.
Battery discharged (T52P).
Other failure.
Load on Scale exceeds allowable limits.
Load on Scale is not stable.
Load Cell damage.
Lock Calibration Menu set to On.
LFT menu set to On.
Incorrect value for calibration mass.
Unit not set to On.
Menu has been locked.
Weight reading exceeds Power On Zero
limit.
Weight reading below Power On Zero
limit.
Weight reading exceeds Overload limit.
Weight reading below Underload limit.
Weight exceeds six digits. Display
overflow.
Factory calibration data in memory
module at the end of the load cell cable
is not valid under LFT OFF status.
Fail to read serial number from memory
module or serial number does not match
the indicator's under LFT ON status.
Calibration data not present.
Batteries are discharged.
Calibration value outside allowable limits
Attempting to exit the menu with the LFT
setting ON and the security switch OFF.
Reference Weight too small. The weight
on the platform is too small to define a
valid reference weight.
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Defender 5000 Indicators
REMEDY
Corrupted EEPROM data
Check power cord connections.
Make sure power cord is plugged
in properly into the power outlet.
Check power source.
Replace batteries (T52P).
Service required.
Remove load on Scale.
Wait for load to become stable.
Service required.
Set Lock Calibration Menu to Off.
Refer to Section 3.12 Menu Lock.
Set LFT menu to Off.
Use correct calibration mass.
Enable unit in the Units Menu.
Refer to Section 3.7 in the Unit
Menu.
Set selected menu to Off in the
Lock Menu.
Lockout Switch on the circuit
board may need to be set to the
Off position.
Remove load from scale.
Recalibrate scale.
Add load to scale. Recalibrate
scale.
Reduce load on scale.
Add load to scale. Recalibrate
scale.
Reduce load on scale.
Calibrate scale.
Break the seal or replace the
original base/indicator.
Calibrate scale.
Replace batteries (T52P).
Use correct calibration weight.
Refer to Section 6.1. Set the
security switch to the ON position.
Use a greater weight for sample.
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