Troubleshooting and Test Functions 4
1100 Series FD Reference Manual 89
Motor Errors
NOTE
Monochromator motor errors may show up during the initialization or during operation of
the detector.
There are individual messages for either the excitation or the emission side.
If an error occurs, do a lamp ignition. This will clear the error and a re-initialization of the
motors is performed.
Tabl e 17 Motor Errors
Message Description Probable Causes Suggested Actions
Motor Or Encoder Not Found
EX 6705
EM 6706
During initialization of the
detector, the excitation and
emission monochromator
are activated.
encoder cables mixed on
FLM board
monochromator assembly
not connected
monochromator or encoder
defective
monochromator motor
power driver defective
check encoder connections
to FLM
check motor connections to
FLF (Ex) and FLM (Em) and
encoders to FLM
replace monochromator
assembly
defective FLF board (Ex) or
FLM board (Em)
Encoder Index Not Found
EX 6707
EM 6708
During initialization of the
detector, the excitation- and
emission monochromator
are activated and the
encoder should generate an
index.
encoder defective
encoder electric defective
monochromator defective or
missing one phase
monochromator motor
power driver defective
replace monochromator
assembly
replace FLM board
check for connection to FLF
(Ex) and FLM (Em) or replace
monochromator assembly
defective FLF board (Ex) or
FLM board (Em)
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