DR4300 Circular Chart Recorder
180 DR4300 Circular Chart Recorder Product Manual 4/00
8.5 Troubleshooting Procedures
8.5.1 Overview
Introduction
The troubleshooting procedures for the observable symptoms of failure are presented in the same order as
they appear in Table 8-5. Each procedure includes what to do if you have that particular failure, as well as
instructions for accomplishing the task, or a cross-reference to instructions elsewhere in the manual.
Equipment needed
You will need the following equipment in order to troubleshoot the symptoms listed in the tables that
follow:
• DC Milliammeter – mA DC
• Calibration sources – T/c, mV, Volt, etc.
• Voltmeter
Safety precautions
Exercise appropriate safety precautions when troubleshooting the recorder operation.
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.
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