Troubleshooting - Geokon 8025 Instruction Manual

6. TROUBLESHOOTING

This section will NOT attempt to cover all possible problems that could be encountered in the
course of Datalogger operations. Consult the factory if other problems arise or remain
unresolved.

Cannot communicate with the Datalogger.
Suggestions:
1. The wrong communication cables are being used or the cables in use are defective.
Consult Appendix D.3 to verify cable pinout. Consult the factory for interfacing information.
2. The internal battery could be dead. Charge overnight and try again. If it still doesn't work
check the voltage across the terminals of the battery. If the voltage is still below 10 volts the
battery may need to be replaced.
3. The wrong communication port is being used on the host computer (default is COM1).
Consult the appropriate software manual for instructions on changing the communication port.
4. The communication port on the host computer is defective. Verify the functioning and
configuration of the COM port by using it with another RS-232 device, such as a modem or
serial printer.
5. The Datalogger Auxiliary Fuse on the Dual-Mode Charger board is blown. Refer to
Appendix D.7 for proper fuse replacement.

The system battery voltage and panel temperature read odd numbers.
Suggestions:
1. The system battery could be low. Charge and check again (see previous section).
2. A disruptive current loop may be operating as a result of improper grounding or
excessive noise. Consult the factory for more information.

The internal battery measurement does not increase and charging LED (Yellow =
Charging and Green = Charged) does not light when the AC adaptor is plugged in.
Suggestions:
1. The adaptor may be damaged. Check the output pins of the adaptor with a voltmeter.
2. The charger fuse is blown. Consult Section 5.5 for checking and/or replacement.
3. The internal battery is no good. Consult the factory.
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