Teledyne GFC 7001E 用户手册

 

Teledyne Analytical Instruments 

288 

 

13.5. SUBSYSTEM CHECKOUT 

The preceding of this manual discussed a variety of methods for identifying possible sources of failures or 
performance problems within the analyzer.  In most cases this included a list of possible causes.  This describes 
how to determine individually determine if a certain component or subsystem is actually the cause of the problem 
being investigated. 

 

13.5.1. AC MAINS CONFIGURATION 

The analyzer is correctly configured for the AC mains voltage in use if: 

1.  The Sample Pump is running.   
2.  The GFC Wheel motor is spinning.  LED’s D1 & D2  (located on the sync/demod PCA) should be 

flashing. 

3.  If incorrect power is suspected, check that the correct voltage and frequency is present at the line input 

on the rear panel.   
  If the unit is set for 230 VAC and is plugged into 115VAC, or 100VAC the sample pump will not start, 

and the heaters will not come up to temperature. 

  If the unit is set for 115 or 100 VAC and is plugged into a 230 VAC circuit, the circuit breaker built into 

the ON/OFF Switch on the Front Panel will trip to the OFF position immediately after power is 
switched on.   

 

13.5.2. DC POWER SUPPLY 

If you have determined that the analyzer’s AC mains power is working, but the unit is still not operating properly, 
there may be a problem with one of the instrument’s switching power supplies.  The supplies can have two faults, 
namely no DC output, and noisy output.   

To assist tracing DC Power Supply problems, the wiring used to connect the various printed circuit assemblies 
and DC Powered components and the associated test points on the relay board follow a standard color-coding 
scheme as defined in the following table.   

 

Dgnd 1 

Black 

+5V 2 

Red 

Agnd 3 

Green 

+15V 4 

Blue 

-15V 5 

Yellow 

+12R 6 

Purple 

+12V 7 

Orange