User's Manual

Table Of Contents
Section 5877 User Instructions
Issue AQ, January 15, 2013 Spec. No. 582140000 (Models 802NLDB, 802NLEB and 802NL-B)
Page iv Table of Contents
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CHAPTER 6 SYSTEM TROUBLESHOOTING AND REPAIR ............................................... 6-1
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
REVISION RECORD