Operating Instructions UVD 170S/340S
13
5 Troubleshooting
Problem
Probable cause
Remedial action
Lamp is not switched
on
Lamp is still too hot
(CHROMELEON
TM
message:
"Lamp too hot...")
Allow a delay of 5 minutes,
then switch the lamp on
again.
Lamp cannot be switched on
( CHROMELEON
TM
message:
"Lamp On failed...")
Allow a delay of 5 minutes,
then switch the lamp on
again. If several attempts are
unsuccessful, check the lamp
and the connecting cable (see
below).
Connecting cable between
UVD 170S/340S and PC not
correctly installed
Connectors on the detector
and the PC must be inserted
evenly and locked into place
with latching devices on both
sides.
No function
Detector not connected to
mains
Connect mains cable
Detector not switched on
Switch on detector
Fuse blown
Replace fuse
Replaced fuse blows
immediately
Call Dionex service
Connecting cable between
UVD 170S/340S and PC not
correctly installed
Connectors on the detector
and the PC must be inserted
evenly and locked into place
with latching devices on both
sides.
No signal / irregular
signal
Flow cell contaminated
Clean flow cell
(
→
Low transmission through
mobile phase
Select alternative
wavelength
Check solvent for
contaminants.
Incorrect spectral range
Alter spectral range
Faulty injection valve
Check fluidics
Fault in diode array
Call Dionex Service
No signal / irregular
signal
Lamp intensity too low
Change lamp
M68 board defective
Check M68 board, replace
Connecting cable between
UVD 170S/340S and PC not
correctly installed
Connectors on the detector
and the PC must be inserted
evenly and locked into place
with latching devices on both
sides.
