5-1
Chapter 5
Troubleshooting
Overview
As an aid to troubleshooting the XRC, this chapter will provide troubleshooting guidelines for
the various subsystems.
This Chapter contains a troubleshooting flowchart (see Figure 5–1). As you follow the logic
in this flowchart, you will be directed to specific test instructions that are found in this
Chapter or you may be directed to the Power Troubleshooting Flowchart (see Figure 5–4) or
possibly the Communication Troubleshooting Flowchart (see Figure 5–8). In addition to
these flowcharts, this Chapter contains step by step procedures for troubleshooting an
XRC
with or without an installed radio communication unit.
Highlights
This Chapter covers the following topics:
Topic See
Page
Troubleshooting Visual Alarm Codes
5-4
Overview 5-4
Troubleshooting a Blank LCD Screen
5-5
Troubleshooting a Low Lithium Alarm (LL)
5-6
Troubleshooting a Low Charger Alarm (LC)
5-7
Troubleshooting a Analog to Digital Failure Alarm (AD)
5-7
Resistive Temperature Detector (RTD) Continuity Test
5-9
RTD Current Source (Resistive) Test
5-10
RTD Impedance Test
5-11
Power Troubleshooting
5-12
Overview 5-12
Power Supply Test
5-13
Solar Panel Charging System Test
5-13
AC Charging System Test
5-15
Auxiliary Equipment Isolation Test
5-16
TFIO Module Isolation Test
5-17
SLEEP Mode
5-18
Reset Procedures
5-19
Troubleshooting Communications
5-21
Communications Overview
5-21
Transceiver Supply Voltage Test
5-23
12V Communication Supply Voltage Test
5-23
Transceiver Check
5-25
RS-232 Communication Test
5-25
RS-485 Communication Test
5-27
RS-485 Communication Test
5-27
Continued on Next Page
Summary of Contents for XRC6490
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