64
6. Replace a new power supply board back
onto the analyser.
7.18 Error Code 0222, 0223, 0224 & 0225
Error Code 0222: Upper NTC fault. In the range of the upper temperature thermistor to test
the voltage by loading a current to the resistant.
Error Code 0223: Lower NTC fault. In the range of the lower temperature thermistor to test the
voltage by loading a current to the resistant.
Error Code 0224: Upper heating film fault. Check whether the voltage of the upper heating film
is normal when the voltage is loaded to the heating film. The voltage drop on the dividing
voltage resistance should more than a threshold theoretically and detected by the circuit get a
high lever signal.
Error Code 0225: Lower heating film fault. Check whether the voltage of the lower heating film
is normal when the voltage is loaded to the heating film, the voltage drop on the dividing
voltage resistance should more than a threshold theoretically and detected by the circuit get a
high lever signal.
7.18.1
Reasons
1)
The thermal resistance is broken or the welding place is not in good contact, resulting in
the wrong test data.
2)
Poor contact with electrical wiring.
3)
The heating film plug is not properly inserted.
4)
The welding spot of the heating wire is broken.
7.18.2
Troubleshooting
Please follow the steps in order. After each step is finished, retest whether the fault is cleared
or not. If not, proceed to the next step.
1)
Disassemble the machine enclosure and check whether all cables are properly plugged in
and connected, focusing on heating film connect wire.
2)
Replace the heating film.
Summary of Contents for InSight V-CHEM
Page 1: ...Veterinary Chemistry Analyser Service Manual...
Page 9: ...3 Back View Right View...
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