User's Manual

Table Of Contents
User Instructions Section 5877
Spec. No. 582140000 (Models 802NLDB, 802NLEB and 802NL-B) Issue AQ, January 15, 2013
Chapter 6. System Troubleshooting and Repair Page 6-1
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CHAPTER 6
SYSTEM TROUBLESHOOTING AND REPAIR
CONTACT INFORMATION
Support contact information is provided on the inside of the back cover of this document.
TABLE OF CONTENTS
Contact Information ......................................................................................................... 6-1
Admonishments ............................................................................................................... 6-2
General Safety .......................................................................................................... 6-2
Voltages .................................................................................................................... 6-2
Circuit Card Handling ................................................................................................ 6-3
LMS Troubleshooting Procedures ................................................................................... 6-3
Troubleshooting Information ............................................................................................ 6-4
General ..................................................................................................................... 6-4
Adjustments .............................................................................................................. 6-4
MCA Messages ......................................................................................................... 6-4
Rectifier Current Sharing Unbalance ........................................................................ 6-5
Rectifier Module Fault Symptoms and Troubleshooting ........................................... 6-6
Updating the Inventory after Changes to the System Have Been Made .................. 6-7
Replacement Information ................................................................................................ 6-8
Replacement Assemblies ......................................................................................... 6-8
Replacement Cables ................................................................................................. 6-8
Replacement Procedures ................................................................................................ 6-9
Rectifier Replacement ............................................................................................... 6-9
MCA Circuit Card Replacement .............................................................................. 6-11
Router Circuit Card Replacement ........................................................................... 6-15
Distribution Bus Monitoring Circuit Card Replacement........................................... 6-18
MCA Customer Alarm Relay Circuit Card Replacement ........................................ 6-21
MCA I/O Circuit Card Replacement ........................................................................ 6-21
Alarm, Reference, and Control Fuse Replacement ................................................ 6-22
Rectifier Fan Replacement ..................................................................................... 6-25
Adding a Battery Charge Digital Temperature Compensation Probe to a
Previously Operated System ......................................................................................... 6-26
Removing a Battery Charge Digital Temperature Compensation Probe from a
Previously Operated System ......................................................................................... 6-27