Chapter Eight: Maintenance and Troubleshooting Troubleshootin
133
Test A: Localizing Malfunction to the Cable or the Electronics Unit
Equipment Required:
Digital Volt Meter (DVM)
1. Disconnect the transducer cable from the transducer.
2. Press the [
CAL
] key on the front panel of the 670 instrument.
The system responds by displaying the calibration screen.
3. Press an arrow key, ( [
] or
[ ] ), until the system check screen appears.
Ch 1 9.8799 Volts
SYSCHK
The reading should be between 9.5 and 10.5 Volts. A reading outside this range
indicates a problem with the pressure transducer or its cable.
4. Press the [
SETUP
] key.
The system responds by displaying a setup screen.
5. Repeatedly press an arrow key, ( [
] or
[ ] ), until the Heater screen appears.
Ch 1 Heater OFF
6. Use the Adjust knob to turn the heater OFF.
7. Press the [
ENTER
] key to turn off the heater.
The system responds by turning off the heater.
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