User's Manual

Preventive Maintenance
Troubleshooting 7-1
Chapter 7
Troubleshooting
This chapter describes maintenance and troubleshooting procedures that you must follow when
using the RFID System 21. These procedures complete the troubleshooting information given in
Chapter 5, Configuration and Operation, for the initial system installation and configuration.
Preventive Maintenance
By using special commands, built-in Self Diagnostic circuits can check any part of the system and
report an error code, if necessary. Depending on the error code received, the service technician will
know the piece of hardware that is malfunctioning, and can immediately take corrective action to
remedy the situation.
All units have a warranty seal placed on their enclosures. Removal of this seal will void the
warranty.
General Guidelines
Below is a list of some assumptions and guidelines:
1. The chapter assumes that repairs for any electronic assemblies are not made on site. Unless
otherwise stated, if a specified condition cannot be met, the electronic assembly must replaced
and returned to the manufacturer for repairs.
2. For a complete technical description of the RFID System S21, refer to the RFID System S21
Technical Guide. For a detailed description of the commands and parameters used to configure
or to control the 95 Series RFID System, refer to the RFID System S21 Reference Guide.
3. Information regarding the RFID System S21 configuration and operation is described in
Chapter 5, Configuration and Operation.
4. The locations of the DATA LED, the POWER LED, and the RESET button are shown in
Figure 5-1.
5. All the reference to commands are made assuming that the Reader’s address is 0.