Thermo Scientific GENESYS 20 Service Manual page 26

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Troubleshooting
"Gain Oscillating"
"Hardware Failure 13" 1.
"Hardware Failure 15" 1.
4 - 8
1.
Check lamp alignment. The lamp
may not be aligned to the entrance
slit. Turn the lamp adjustment cam
1/8 of a turn and power up again.
Repeat this until lamp cam has been
rotated for one full turn.
2.
Filter wheel, or detector board, or
mono motor cable not connected to
main board.
3.
A sample was left in the sample
compartment and is blocking the
light beam. Remove sample and
restart.
4.
Filter wheel motor is defective.
Replace filter wheel assembly.
5.
Detector assembly is defective.
Replace.
6.
Make sure filter and mono motor
wires do not interfere with the filter
wheel.
1.
This occurs when the instrument is
unable to set the proper gain during
an auto zero. The most probable
cause is a resistor error on the
detector board. Replace the
detector board.
Same as "Sample too bright".
2.
Also may be caused by excessive
dark offset due to detector board
contamination. Replace detector
board assembly.
Same as "Sample too bright".

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