Omega Engineering OMEGASCOPE OS523E User Manual page 59

7
Troubleshooting Guide
The thermometer is
"locked up" (the
display is "frozen").
The display is either
erratic or stays at
one reading.
You can expect to see and hear the following:
7-2
Problem
Remove and reinstall the batteries or
disconnect and reconnect the ac
adapter.
1. Clean the thermometer lens.
Refer to Section 4.2.
2. Activate the Diagnostic routine of the
thermometer as follows (while looking
at room temp):
a. Pull the trigger and press the
to lock the trigger.
b. Press the
FUNC
same time.
• You will see the model and version
number "VER X.X" of the software for
about 1 second.
• You will hear a beep, "TST" is displayed.
• Soon after, all of the segments of the
display including the backlighting will
light up for about 1 second.
• The display will clear and a PAS (pass)
or ERR (error) code may be seen on the
display.
ERR1: Infrared temp reading is >150°F
or < 23°F.
ERR2: Ambient temp >122°F or < 32°F
ERR3: Can not read from EEPROM
memory
EER4: Can not write to EEPROM memory
Solution
LOCK
key and key at the
LOCK
key
☞