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DR4300 Circular Chart Recorder
164 DR4300 Circular Chart Recorder Product Manual 12/03
7.3 Troubleshooting Procedures
7.3.1 Overview
Introduction
The troubleshooting procedures for the observable symptoms of failure are presented in the same order as
they appear in Table 7-1. Each procedure includes what to do if you have that particular problem, as well
as instructions for accomplishing the task, or a cross-reference to instructions elsewhere in the manual.
Equipment needed
You will need a voltmeter to troubleshoot the symptoms listed in the tables that follow.
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.