OHAUS PA64 Service Manual

Also see for Carat PAJ1003: Instruction manual

Contents

OHAUS PA64 Service Manual Manual pdf 38 page image

CHAPTER 3 MAINTENANCE PROCEDURESOhaus Corporation www.ohaus.com 3-14 Pioneer™ Balances Service Manual11. Insert and tighten the tworemaining screws to secure theLoad Cell. Check again that anError 8.X is not displayed. If thereis an IDNR error, fix this error first,and then check that an Error 8.X isnot displayed.3.3.9 Position Sensor PC Board Removal/Replacement/Adjustment – Precision12. After completing the adjustment, turn the balance off and remove the Pan and PanSupport.Figure 3-35. Position Sensor Board.13. If a new Position Sensor Board has been installed, see Appendix C and follow theinstructions to restore the EEPROM.3.3.10 Main Printed Circuit Board (PCB) Replacement – All BalancesIf the Display persistently shows Error 1 (invalid checksum data) or 2 (overload or underloadcondition), and normal remedies fail to solve the problem, the PCB may need to be replaced.1. Disconnect the Load Cell Cable, RS232 Cable, and Power Cable.2. Remove the screws on the Main PC Board which secure it to the Base.3. Install replacement Main PC Board in the reverse order as removed. Check the LCDdisplay on the new board and remove the protective plastic covering if in place.4. Reassemble the balance.5. Complete the PCB installation using the Pioneer Software Service Tool – seeAppendix C.3, Install New Main Printed Circuit Board.6. After assembly, verify that the balance meets all specifications. (See Chapter 1.)Perform all tests. (See Chapter 4.)Mounting ScrewsMountingScrew