Entrance Slit/Illumination Assembly - Thermo Scientific GENESYS 20 Service Manual

9.3.5
Entrance Slit/
Illumination Assembly
2. Remove the main cover assembly (refer to "Section 9.1.3 - Cover
Assembly").
DO NOT TOUCH THE DETECTOR.
ASSEMBLY AT THE SIDES OR TOP AND BOTTOM ONLY. DO NOT
REACH BEHIND THE ASSEMBLY. FAILURE TO OBSERVE THIS
CAUTION MAY RESULT IN LOSS OF ACCURACY AND
PERFORMANCE.
3. Disconnect the preamp cable connector from the detector assembly.
4. Remove the top two screws which attach the assembly to the base
assembly. Do not remove the lower screw or the board will fall out of
the assembly.
REPLACEMENT
5. Align the detector assembly with the mounting holes and replace the
screws. DO NOT OVER TIGHTEN!
6. Replace the foil shield.
7. Replace the main cover assembly (refer to "Section 9.1.3 - Cover
Assembly").
REMOVAL
1. Remove the main cover assembly (refer to "Section 9.1.3 - Cover
Assembly").
2. Remove the main circuit board (refer to "Section 9.3.1 - Main Circuit
Board").
3. Move the Mono Motor wires out of the way.
4. Lift off the monochromator cover.
5. Move the wires for the filter wheel motor out of the way.
6. Remove the two screws on the top of the assembly and lift up on the
assembly to remove it from the base assembly.
9 - 17
Dissassembly and Replacement
CAUTION
HOLD THE DETECTOR