Thermo Scientific Surveyor RI Plus, Hardware Manual

Page: 52 / 58

5
Troubleshooting
Detector-Related Problems
40 Surveyor RI Plus Detector Hardware Manual Thermo Scientific
4. No peaks, or peaks
much smaller than
expected.
a. Lamp not On, or defective. a. Make sure the lamp is On.
Run the detector diagnostic
tests to check the lamp.
Call a Thermo Fisher
Scientific service
representative to replace the
lamp.
b. Integrator input voltage
does not match detector
output voltage.
b. Verify that the integrator is
connected to the
appropriate Analog Output
connections on the
detector. Check the
attenuation setting on the
integrator.
c. Insufficient sample
reaching the detector. c. Check the entire system for
leaks. Verify the sample
injection volume.
5. Broad, tailing
peaks.
a. Rise time is too large (too
slow).
a. Lower the rise time
selection.
b. Poor connection at flowcell
inlet.
b. Check the end of the inlet
tubing for a clean, flat
surface free of obstructions.
6. Detector will not
power up.
a. Tripped circuit breaker at
power outlet.
a. Resolve the problem. Then
reset the circuit breaker.
b. Blown detector fuse. b. Resolve the problem. Then
replace the fuse.
c. Incorrect voltage. c. Verify that the line voltage
is within the specified range
as listed in
“Specifications”
on page 10 .
d. Power cord not connected. d. Connect the power cord.
7. Detector does not
go into run upon
injection.
a. Detector not receiving Start
signal.
a. Check the connection to
the Run contacts on the
back panel.
8. LED1 - Power a. Green - power On. a. No action is required.
b. Off - no power. b. Check the fuse, line
voltage, and so on.
Table 7. Troubleshooting detector-related problems (Sheet 4 of 5)
Symptom Cause Remedy