This Technical note walks users thru on how to replace the LED board(or LED) in ASIs LEDs illuminator (MIM-LED-LAMP or MIM-LED-LAMP-NR assembly)
The MIM-LED-LAMP assembly consists of the Cap (which houses the LED board and acts like a heatsink) and the Condenser Lens.
Separate the MIM-LED-LAMP assembly from rest of the microscope(or RAMM). The Condenser lens is held on the microscope with Three 2mm setscrews. Use a 2mm allen wrench to loosen the setscrews and detach it from the scope.
Now Separate the Cap from the Condenser lens. The Cap and the Condenser lens ring are held together with three 1.5mm set screws. User a 1.5mm allen wrench to unscrew them. Location is shown in pictures below.
We are down to the Cap.
LED board is held inside with a C ring and three M2.5 screws
Use a 2.5mm Allen wrench to screw the three M2.5 screws. This will separate the LED board from the cap.
Now to reassemble the Illuminator with the new LED board. Drop it into the cap. Orient it such that the Connector is accessible thru the opening.
Then drop the C ring onto the board.
Use your finger to apply pressure and hold the C ring and board in place.
Flip the Cap so you can access the Mounting holes for the M2.5 screws.
Drop the three M2.5 screws one by one and screw it to the C ring thru the LED board.
User might notice that there is a lot of clearance on the M2.5 mounting holes. This is to give the user flexibility in adjusting the LED boards XY position to better align with the microscope optics.
For now , try to position the LED board as close to cap center, and the LED boards's connector is in middle of the connector's openinging.
The Three M2.5 screws are accessible even when the illuminator is fully assembled.User can go board loosen these screws and adjust the xy position of the LED board anytime.
ReAttaching the condenser lens. The Lens needs to be at a certain distance from the LED board to focus the light correctly. The procedure is as follows.
Assembly is complete, reattach the Illuminator back onto the scope. Contact support[at]asiimging[dot]com for additional support if needed.