User`s manual

9-3
The system will not cool
down to subambient
temperatures.
The laboratory is either
too humid or too hot.
Move the instrument to an
air-conditioned room. Or
run Diagnostic Test #3,
the Chiller Test. Call an
Applied Biosystems
Service Engineer if the
test fails.
An error message is
displayed when you
turn on the instrument.
One of the main
instrument systems has
failed.
Call an Applied
Biosystems Service
Engineer.
You are getting
unexpected or
unrepeatable cycle
times, or temperatures
that are too high or too
low.
Suspected poor cycling
performance.
Run Diagnostic Test #4
(System Performance
Test), then call an Applied
Biosystems Service
Engineer.
When starting a run,
the following display
appears:
This is normal if you start
a run just after turning the
instrument on or
completing a subambient
hold.
Wait a few minutes to
allow the block cover to
come up to temperature. If
it doesn’t, contact an
Applied Biosystems
Service Engineer.
Table 9-1 Troubleshooting Information
(continued)
Problem Possible Cause Check and / or Remedy
Cover temp is xx ° C
Run starts at 100 ° C