50
Teledyne API Model 480H O
3
Monitor User Manual
09421A DCN8343
8. TROUBLESHOOTING
WARNING – ELECTRICAL SHOCK HAZARD
The operations outlined in this section are to be performed by
qualified maintenance personnel only!
8.1. REFERENCE DRAWINGS
There are several illustrations throughout this manual that can be used for reference
when performing some of the troubleshooting activities. The flow diagram is
located in Section 3.6 for additional reference if needed.
8.2. TROUBLESHOOTING USING FRONT PANEL STATUS LED AND
STATUS OUTPUTS
Figure 8-1. Display and Control Panel
The status LED on the front panel reflects the current operating status of the
monitor and indicates fault conditions. See Section 3.4.2 for more information on
the Status Outputs and Table 8-1 for additional information.
The status details and outputs are categorized into Critical and Non-Critical
warnings. Critical warnings are those that would normally require immediately
removing the monitor from service and repairing it. Non-critical warnings are those
that indicate some maintenance would be useful, but not immediately required. If
the front panel LED indicates a status issue, details can be viewed in the STATUS
