32
Symptoms Check Possible solutions
1. Check if the power cable is
securely plugged into the outlet.
1. Reconnect the cable
securely, if disconnected.
The instrument does
not operate at all.
2. Remove the power cable from
the outlet and check the fuse in
the main unit. Replace the fuse if
blown.
2. Replace the fuse if it
blows. (Refer to Section
5.3.1.) If the fuse blows
immediately after
replacement, the electrical
system is faulty. Contact
your local JASCO
distributor.
WI lamp does not
come on.
Check the WI lamp to see if it has
burnt out.
Replace the lamp with a new
one if burnt out. (Refer to
Section 5.3.2.)
D
2
lamp does not
come on.
Check the D
2
lamp to see if it has
burnt out.
Replace the lamp with a new
one if burnt out. (Refer to
Section 5.3.2.)
The baseline is curved
greatly, in excess of
1%.
Check if baseline correction is set
to “OFF”.
Set it to “ON” if set to “OFF”
(Refer to the Software
manual.)
1. Check if baseline correction is
set to “OFF”.
1. Set it to “ON” if set to
“OFF”. (Refer to the
Software manual.)
2. Poor adjustment of light source
mirror.
2. Re-adjust the mirror
referring to Section 5.3.2.2
or Section 5.3.2.3.
When the light source
is changed from WI to
D
2
, the step height of
the baseline is greater
than 1%.
3. Check if the standard cell holder
is in good contact with the two
positioning pins. The beam may
be incident upon the cell holder.
3. Set the standard cell
holder in the correct
position.
The performance at
wavelengths shorter
than 320 nm is not
stable.
D
2
lamp is “OFF”. Turn the D
2
lamp “ON”
(Refer to the Software
manual.)
The performance at
wavelengths longer
than 400 nm is not
stable.
WI lamp is “OFF”. Turn the WI lamp “ON”.
(Refer to the Software
manual.)
1. Check if light is incident upon
the center of the entrance slit.
1. If not, adjust the light
source mirror. (Refer to
Section 5.3.2.2 or Section
5.3.2.3.)
2. Spectral bandwidth is too small.
2. Increase the spectral
bandwidth.
3. The absorption of the solvent
placed on the reference beam
side is too high.
3. Replace the solvent with a
more suitable one.
Noise is high.
4. Lamp output has deteriorated. 4. Replace the lamp with a
new one. (Refer to Section
5.3.2.)
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