Thermo Scientific 450iQ Instruction Manual page 232

Photo Lamp
Use the following procedure to remove and replace the photo lamp
detector board.
Detector Board
Replacement
Equipment required:
Phillips drive, #1 and #2
1. Unplug cable.
2. Using #2 Phillips drive, unfasten three #6-32 pan head screws.
Figure 7–42. Replacing the Photo Lamp Detector Board pt 1
3. Pull detector cover outwards.
4. Using #1 Phillips drive, unfasten four #4-40 pan head screws.
5. Pull photo lamp detector board outwards.
6. Replace lamp detector board and assemble in reverse order.
450iQ Instruction Manual Thermo Scientific