OHAUS MB120 Service Manual page 58

3.11.2.3 Replacing the Lid sensor board.
1. Open the Analyzer and remove the Main PCB (3.8)
2. Remove the housing cast iron plate (3.11.2)
3. Locate the Lid sensor board.
4. Remove cable from Fan and to temperature sensor, remove the 3 screws holding the
board is place.
5. Remove and replace the Lid sensor board.
3.11.2.4 Replacing the LCD display.
1. Open the Analyzer and remove the Main PCB (3.8)
2. Remove the housing cast iron plate (3.11.2)
3. Locate the LCD display.
MB90 MB120 Series Service Manual
CHAPTER 3 – MAINTENANCE PROCEDURES
52 Ohaus Corporation www.ohaus.com