21. MAINTENANCE
21.4 Troubleshooting
Troubleshooting methods are shown classified by symptoms. Read the item that corresponds to the symptom.
Caution Repair and modifications
Never repair or modify the instrument by replacing assembled component units or parts, otherwise correct repair or modifications cannot be executed and also electric shock or damage of your recorder may occur.
1
Not Working
Check | Causes and remedial measures | |
1) Check if power is supplied to the power | Turn on the external power supply source. | |
terminals. | ||
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2) Check if the power supply is as specified. | Supply the specified power (100 to 240V AC and 50/60 Hz). | |
3) Check if the connections to the power | Connect the cable to the power terminals (L, N) correctly. | |
terminals are correct. | ||
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4)Try turning off or on the external power supply source.
5)Initialize the parameters and check if your recorder recovers to normal conditions. See Section 20. (Caution) All parameters become the default values. Program them again.
2
Measured Value Abnormal
Symptoms | Causes and remedial measures |
•Check if the measuring terminals are loose.
•Check if the input signal is unstable.
1)Measured values are unstable.• Check if the thermocouple is connected with another instrument in parallel and the burnout function is programmed to [Enable].
2)Check if the measured value is displayed • Check if the input terminals are connected correctly.
as shown below. | • Check if the input terminals are loose. | |||||
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| • Check if the input signal wires are disconnected. | |
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| • Check if the input signal exceeds the measuring range. | |
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| • Check if the selection of ºC/ºF computation is correct. | |
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| • Check if the input signal is correct. | |
3) An error occurs. | • Check if an extension wire is connected to the input terminal. | |||||
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| • Check the scale and adjust the measured values if any error | |
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| is detected. (See Section 18.1.) | |
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| • Check if the RJ selection is 0 (disable) in [Range/Printing | |
4) Influences by ambient temperature | range] programming. (This is negligible if reference junction | |||||
(Thermocouple input type only) | compensation is executed externally.) | |||||
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| • Check if the terminal cover is mounted. | |
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