OHAUS EC SERIES Service Manual

Also see for EC Series: Instruction manual Instruction manual

Contents

OHAUS EC SERIES Service Manual Manual pdf 12 page image

2-4CHAPTER 2 DIAGNOSISTABLE 2-5 BALANCE READING INCORRECT OR UNSTABLE.TABLE 2-6 CANNOT CALIBRATE THE SCALE.SYMPTOMBalance reads incorrectly.Balance reading unstable.PROBABLE CAUSENeeds calibration.Load Cell is damaged.Main PC Board defective.REMEDYPerform Service Calibration in Appen-dix B. If calibration fails, refer to Table2-6.Test the Load Cell, refer to Section 3.3.If defective replace, see Section 4.4.After repair, proceed with PerformanceTests in Section 3.6.The Main PC Board should be tested inaccordance with Section 3.4. The MainPC Board if defective should be re-placed. See Repair Procedures 4.3.After repair, proceed with performanceTests in Section 3.6.SYMPTOMScale can be turned on but willnot calibrate.PROBABLE CAUSEIncorrect weights.Load cell assembly defec-tive.Main PC Board defectiveREMEDYVerify that proper weights are used.Test the Load Cell, refer to Section 3.3. Ifdefective replace, see Section 4.4. Afterrepair, proceed with Performance Testsin Section 3.6.The Main PC Board should be tested inaccordance with Section 3.4. The MainPC Board if defective should be replaced.See Repair Procedures 4.3. After repair,proceed with Performance Tests in Sec-tion 3.6.