CHAPTER 3 REPAIR PROCEDURES3.1.3 Main Printed Circuit Board (PCB) Removal & ReplacementIf the main Printed Circuit Board (PCB) is suspected of being faulty, it should be replaced.To replace the main Printed Circuit Board, proceed as follows:1. Open the Housing by referring to Section 3.1.1.Main PCB Cover ScrewsRS232 ScrewsFigure 3-9. Display Balance Load Cell Cover2. Remove 2 screws from the Main PCB cover and remove the cover.3. Remove the 2 screws that secure the RS232 connector.Discovery Balance Service Manual 3-7 Ohaus Corporation www.ohaus.com
