Hardy HI 2151/30WC Single-Scale Controller - Manual (Page 57)

Section 8: Troubleshooting
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Section 8 Troubleshooting Procedures
8.1. SCOPE
Chapter Eight consists of all the procedures for troubleshooting the electrical, mechanical
and software of the PROFIBUS Interface Card in the event of a malfunction. All the
information covers the diagnosis and repair of malfunctioning components.
8.2 DISASSEMBLY AND REASSEMBLY NOTES AND CAUTIONS
Disconnect the power cord before disassembling.
Make sure that any disassembly is done in a clean, well ventilated, properly controlled
static environment.
Always make sure that the assemblies and sub-assemblies are well supported and
insulated when doing any repairs on the PROFIBUS Interface Card or the HI 2151
Series Weight Controller.
Place small fasteners, connectors and electrical parts in closed containers so as not to
lose parts during reassembly.
Read all the disassembly instructions before any disassembly begins. Be sure that you
are familiar with the procedures. If any of the instructions for disassembly are unclear,
contact Hardy Process Solutions, Customer Support Department for additional
information and assistance.
Do not disconnect any electrical plug, connector or terminal unless an identification
tag is present or one is attached. Always note where the connector or plug was
attached to the electrical component or wiring harness.
Always install complete hardware groups (Screws, Washers, Lock Washers, Spacers,
Etc.) back to the original point of removal.
Always replace broken or damaged modules or hardware immediately!
Always check to be sure that no loose parts are sitting on printed circuit boards or
electrical connectors or wires when disassembling or reassembling.
Always protect printed circuit boards from electrostatic discharge (ESD). Always use
approved ESD wrist straps and anti-static pads when working on the PROFIBUS
Interface Card.
Always perform a final inspection after completing any reassembly to be sure that all
fasteners are tight, all connectors are secure and there are no loose parts on the
PROFIBUS Interface Card or other PCB Cards in the HI 2151 Series Weight
Controller.
Always follow proper safety procedures when working on or around the PROFIBUS
Interface Card.