Calibration; Test Points - Teledyne HASTINGS 200 Instruction Manual

This section contains a troubleshooting guide to help locate and repair failed components. This
troubleshooting guide is designed as a general reference only and will not cover every possible
component failure. It is possible for problems with the flow instruments to appear as a failed power
supply and vice versa. Therefore, if possible, try to verify the proper operation of the flow instru-
ments on a different power supply. The components and test points mentioned in this section can
be located by aquiring the component layout drawing listed in Section 6.0.
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ponents on the printed circuit board. DO NOT perform these steps if the power ponents on the printed circuit board. DO NOT perform these steps if the power ponents on the printed circuit board. DO NOT perform these steps if the power
ponents on the printed circuit board. DO NOT perform these steps if the power ponents on the printed circuit board. DO NOT perform these steps if the power
supply is still under w supply is still under w supply is still under war ar ar ar arranty
supply is still under w supply is still under w
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4.1

Test Points:

Refer to Figure 4.1. Test point 1 (TP-1) is common. All of the voltages specified in this section are
referenced to this point unless stated otherwise. These voltages should be checked under load
condition. Test point 2 (TP-2) is the output of the positive regulator and should read +14.25, -
15.75 VDC. Test point 3 (TP-3) is the output of the negative regulator and should read -14.25, -
15.75 VDC. Test point 4 (TP-4) is the output of the 5 volt reference and should read +5.01 VDC.
Test point 5 (TP-5) is the voltage applied to the front panel display. Since the display is a minia-
ture digital voltmeter, the voltage on TP-5 should be the same as the number on the display.
Check these voltages prior to using the troubleshooting chart.
TP-5
TP-1
TP-3
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SECTION 4

Calibration

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Figure 4.1
TP-4
TP-2
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