MULTISKAN RC and MS SERVICE MANUAL
9.
FOCUSING THE
LAMP
A) Check that the filter and track cover are at their places.
B) Press "CALC MODE-key. Select
1
ADJUSTMENT and press "ENTER-key. Select 3
LIGHTALLandpress "ENTER-key. Select GAINX (X=level where the readings are not
yet
HIGH)
and press "ENTER-key.
C)
Adjust the distance between the lamp and optics so that the maximum value
(>
2000) is on
the display.
D) Check with GAIN
0
that the smallest channel value is over 350. If the value is lower than
350, check the components of the light path (lamp, filter, fibre bundle, lenses
...
)
10.
CHECKING THE
AID
OFFSET
an? the offsa
Instrument must
be
warm, installed with a filter wheel and track cover.
A) Press "CALC MODE-key. Select
1
ADJUSTMENTS and press "ENTERw-key. Select 2
AID OFFSET and press "ENTER-key.
B) Select 405 and press "ENTERu-key.
C) Input
"0"
for "GAIN".
D) Adjust the trimmerRl2onpcb MACU2 to setthevalue on theright handsideof thedisplay
to 40. After adjusting re-install the track cover and re-check the value.
Checkine the ligh-
10.2.1 Minimum light
A) Select
6
LIGHT CHANNEL and press "ENTER-key.
33)
Select 405 nm and press "ENTER-key.
C) Select channels
A(
...
H)
and press "ENTERM-key. Select GAINOandpress "ENTERv-key.
Before selecting a new channel press "STOP-key and "ENTERw-key twice. The lowest
channel value has to be 350. If
is
not, check the components of the light path.
10.2.2 Checking the detector electronics (D/AC)
A) Select
"3
LIGHT ALL" and press "ENTER-key. Select filter
1
(340 nm) and press
"ENTERw-key. Select GAIN 0 and press "ENTERN-key.
B) If the maximum value is over 350 on the display, carry out the following measurements,
otherwise go to the point C).
-
Select GAIN
1(
... 7) and press "ENTER-key. When selecting another GAIN press
"STOP-key once and "ENTERw-key twice. COUNT-value has to increase 180
...
400
COUNTSIgain step.
Document Release
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Section Page
35 11352-100-~
1
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Labsystems
8
25
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