OHAUS Ranger 7000 R71MHD3 Service Manual

Also see for Ranger 7000 R71MHD15: Instruction manual

Contents

Ranger 7000® Series Service Manual 11 Ohaus Corporation www.ohaus.com2 DIAGNOSTIC GUIDEThis section of the manual contains troubleshooting information. Information is contained to isolatespecific problems using Table 2-1, Diagnostic Guide. Follow all directions step by step. Make certainthat the work area is clean. Handle scale components with care. Use appropriate electro-staticprotection devices to prevent damage to the sensitive electronic components.2.1 TROUBLESHOOTINGGeneral procedures for Troubleshooting:1. Do the most obvious, user-level remedies.2. Visual Check:- Check that the internal parts are clean and free from debris.- Examine the scale for damage or signs of abuse, replace any damaged items.3. Use the error code table for solutions for specific codes.4. Use the Diagnostic Guide; locate the symptom then follow the suggested remedies in order.Note: Allow equipment to warm up for 60 minutes on precision models for optimal weighingperformance. Allow 4 hours for analytical models to stabilize.2.2 SOFTWAREIn most cases understanding the customer’s problem with the scale is easy. Physical damage,displayed error code, failure to power up and obvious poor performance can usually be repaired byfollowing the instructions in the following sections.Some scale issues may be software related. New releases of the software may correct theseissues. The Ranger 7000® Scale has upgradeable software in the Terminal and the Base modules.The software revision in the scale can be seen when the scale is in standby mode or during thepower up sequence. The software version is displayed in the lower right hand corner of the screen.The screen will show:Model number for example: Ranger 7000® R71MD3Capacity and readability 3000g x 0.05gSoftware Revision “Terminal” / “Base” Version 1.00 / 0.14The scale software can also be retrieved by sending a “PV” command via the RS232 or otherinterface.