Troubleshooting Guide - KERN 770-12 Operating Instructions Manual

1.8

Troubleshooting Guide

Problem
No segments appear on the
weight display
The weight display shows "H"
The weight display shows "L"
or "Err 54"
The weight display briefly
shows "Err 02"
The special code
displayed
The weight readout changes
constantly
The weight readout
obviously wrong
86
Possible Causes
- No AC power available
The AC adapter is not
-
plugged in
The load exceeds the
-
capacity of the balance
The weighing pan and/or
-
the pan support disk is/are
not in place
The display did not show a
-
zero readout when the
CAL key was pressed to
adjust
The balance is loaded
-
None of the keys has been
remains
-
pressed since the balance
was turned on
Unstable ambient
-
conditions
Too much vibration or the
-
balance is exposed to a
draft
The draft shield is not
-
completely closed
A foreign object is caught
-
between the pan and the
balance housing
The below-balance
-
weighing port is open
The sample does not have
-
a stable weight (absorbs
moisture or evaporates)
The sample is electrostati
-
cally charged
is The balance has not been
-
adjusted
The balance was not tared
-
before weighing
The air bubble of the level
-
indicator is not within the
circle
Solution
Check the AC power
-
supply
Plug in the AC adapter
-
Unload the balance
-
Position the pan and/or the
-
pan support disk
(depending on the balance
model)
Press the TARE key ; then
-
press the CAL key once
again
Unload the balance
-
Press a key
-
Set up the balance in
-
another area
Access the menu to select
-
the correct code for the
weighing environment
Close the draft shield
-
Remove the foreign object
-
Close the port
-
Adjust the balance
-
Tare before weighing
-
- Level the balance
-
770/GS/GJ-BA-defsi-0023