Photometer Board Replacement - Thermo Scientific 49i Instruction Manual

Photometer Board
Replacement
Thermo Fisher Scientific
1. From the Main Menu, press
to scroll to Lamp Setting > and press
The Bench Lamp Setting screen appears.
Note If Service is not displayed, refer to
page 7-4, then return to the beginning of this step.
2. At the Bench Lamp Setting screen, use
increment/decrement the Lamp Setting % until Cell A Int and Cell B
Int indicate approximately 100,000 Hz.
3. Press to save the setting.
Use the following procedure to replace the photometer board
Equipment required:
Photometer board
Philips screwdriver
Equipment Damage Some internal components can be damaged by small
amounts of static electricity. A properly grounded antistatic wrist strap must
be worn while handling any internal component.
Use the following procedure to replace the photometer board.
1. Turn instrument OFF, unplug the power cord, and remove the cover.
2. Remove the cables from the board. Note the locations to facilitate
reconnection.
3. Remove the two screws from the top of the board.
4. Pop off the board from the bottom mounting studs and remove the
board.

Photometer Board Replacement

to scroll to Service > press
.
""Accessing the Service Mode"
to
(Figure
Model 49i Instruction Manual
Servicing
>
on
7-9).
7-29