Alignment Procedure - Thermo Scientific GENESYS 20 Service Manual

7.1.3

Alignment Procedure

4. Replace the cover assembly (refer to "Section 9 - Disassembly and
Replacement").
5. Open the sample cover door and leave open through the procedure.
6. Place the alignment tool in the sample holder so the vertical alignment
line is facing the filter and lens assembly.
7. Insert the power cord and turn on power to the assembly.
8. Look straight down into the sample cuvette and observe the position of
the visible red dot relative to the vertical center line. If the red dot is
centered on the line, the filter and lens assembly alignment is correct. If
the red dot is not centered, proceed with the alignment procedure.
1. Remove the power cord from the instrument.
2. Remove the cover assembly, rear panel, main circuit board, and
monochromator cover (refer to "Section 9 - Disassembly and
Replacement").
3. Slightly loosen the screw securing the filter and lens assembly. The
assembly must not be loose enough to rock, or loose position but it must
be moveable.
4. Connect the cables for the power supply, limit switch, monochromator
motor, and lamp to the main circuit board. Do not connect the cable for
the filter wheel motor. (The detector cable can be connected but it is
not necessary.)
5. Without putting the monochromator cover back on, set the main circuit
board in position on top of the lugs. Make sure the filter and lens
assembly is not covered and that there is access to the attachment screw.
MAKE SURE THE MAIN CIRCUIT BOARD DOES NOT TOUCH ANY
METAL WHICH MIGHT SHORT CIRCUIT SOMETHING ON THE
BOTTOM OF THE BOARD. FAILURE TO OBSERVE THIS CAUTION
MAY RESULT IN DAMAGE TO THE MAIN CIRCUIT BOARD.
6. Place the alignment tool in the sample holder so the vertical alignment
line is facing the filter and lens assembly.
7 - 3
CAUTION
Optical Alignment