Troubleshooting/Service
108 UDC2300 Controller Product Manual 12/00
10.7 Troubleshooting Procedures
Introduction
The troubleshooting procedures are listed in numerical order as they appear in Table 10-4.
Each procedure lists what to do if you have that particular failure and how to do it or
where to find the data needed to accomplish the task.
WARNING—SHOCK HAZARD
!
TROUBLESHOOTING MAY REQUIRE ACCESS TO
HAZARDOUS LIVE CIRCUITS, AND SHOULD ONLY BE
PERFORMED BY QUALIFIED SERVICE PERSONNEL. MORE
THAN ONE SWITCH MAY BE REQUIRED TO DE-ENERGIZE
UNIT BEFORE SERVICING.
Equipment needed
You will need the following equipment in order to troubleshoot the symptoms listed in
the tables that follow:
• DC Milliammeter – mAdc
• Calibration sources – T/C, mV, Volt, etc.
• Voltmeter