Thermo Fisher Scientific CyberScan DO 110 - Manual (Page 54)

Instruction Manual CyberScan DO 110
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11 ERROR MESSAGES
The following table provides a guideline to enable diagnosis of possible problems
indicated by the messages generated by the meter. The table also provides possible
solutions to the problems encountered.
ERROR MESSAGE INDICATES POSSIBLE CAUSE CORRECTIVE
ACTION
Err. Annunciator Wrong keypad input Wrong input in
selected mode. Release key.
Select valid
operations
depending on
mode.
Battery icon lights up Low Battery Battery power is low Replace batteries
with fresh ones as
soon as possible.
12 TROUBLE-SHOOTING
When experiencing difficulties with the equipment, keep in mind of the following:
1. Check for the obvious, such as physical condition of the probe, any signs of
damage to the cable, power and signal connections etc.
2. Determine whether it is the probe, meter or the surrounding environment that
is causing the problem.
The following troubleshooting table identifies most of the problems likely to occur:
Problem Probable Causes Solution
Nothing is displayed when
the ON/OFF key is
selected. Batteries not in place.
Batteries (+ & - poles) not in
correct polarity.
Weak batteries. Insert batteries.
Re-insert batteries in the
correct polarity.
Replace batteries or attach
AC adapter.
Fluctuating readings when
probe is shaken or bumped
lightly or when membrane is
touched. Probe has lost electrolyte – a
sloshing noise will be heard
when the probe is shaken.
Torn or damaged membrane.
Wet connections in the wiring or
within probe. See Problem 2.
Unscrew the membrane cap,
discard the electrolyte,
membrane and O-ring.
Dry the internals of the
probe, especially the cathode
with a soft cloth.
Switch the meter ON and
observe the display.
If the display reads zero, the
probe and cable circuitry are
alright. Service probe and
change membrane.
If the display does not read
zero, but some other value,