Teledyne MODEL T703 Manual Do Utilizador

Página de 287
Teledyne API T703 Calibrator Operation Manual 
General Troubleshooting & Repair 
  
199 
11.4.  SUBSYSTEM CHECKOUT 
The preceding sections of this manual discussed a variety of methods for identifying possible sources of failures 
or performance problems within the T703 calibrator.  In most cases, this includes a list of possible components 
or subsystems that might be the source of the problem.  This section describes how to check individual 
components or subsystems to determine if which is actually the cause of the problem being investigated. 
 
11.4.1. VERIFY SUBSYSTEM CALIBRATION 
A good first step when troubleshooting the operation of the T703 calibrator is to verify that its major subsystems 
are properly calibrated.  These are: 
  Test Channel D  A conversion (see Section 6.9.2). 
  Gas pressure calibration (see Section 8.3). 
When optional O
3
 components are installed, you should also check: 
  Photometer calibration (see Section 8.1). 
  O
3
 generator calibration (see Section 8.2). 
 
 
11.4.2. AC MAIN POWER 
The T703 calibrator’s electronic systems will operate with any of the specified power regimes.  As long as 
system is connected to 100-120 VAC or 220-240 VAC at either 50 or 60 Hz it will turn on and after about 30 
seconds show a front panel display.   
  Internally, the status LEDs located on the Relay PCA, motherboard and CPU should turn on as soon as 
the power is supplied.    
  If they do not, check the circuit breaker built into the ON/OFF switch on the instruments front panel  
 
CAUTION 
SHOULD THE AC POWER CIRCUIT BREAKER TRIP, INVESTIGATE AND CORRECT 
THE CONDITION CAUSING THIS SITUATION BEFORE TURNING THE 
CALIBRATOR BACK ON. 
 
07223B DCN6378