<8. TROUBLESHOOTING>
8-3
IM 12E04A02-02E
(5) Err15 (memory comparison failure)
A data memory IC (EEPROM) failure is assumed.
Request checking and/or repair of the converter CPU board.
NOTE
If the power is turned off with a memory-comparison failure generated, the stored data are
initialized when the power is turned on again. If initialization is performed, re-setting of necessary
data, zero and span calibration for the input circuit, lamp control reference value calibration,
and turbidity zero and span calibration are required. If data cannot be properly written into the
memory, “Err17” is displayed to notify of a failure occurrence.
(6) Err16 (RAM failure)
A failure of the IC (RAM) used for the computation buffer is assumed.
Request checking and/or repair of the converter CPU board.
Note: Err16 is detected only when the power is turned on. All functions of the converter are
suspended when a failure occurs.
(7) Err17 (EEPROM failure)
A failure of the data memory IC (EEPROM) is assumed.
Request checking and/or repair of the converter CPU board.
Note: Err17 is detected only when the power is turned on. All functions of the converter are
suspended when a failure occurs.
(8) Err18 (reference signal voltage failure)
Operation and checking procedure
Failure Mode and Corrective Action
1. Measure the DC voltage across the converter
connection terminals [S2(+) and AG(-)]. Con
fi
rm
that it is lower than about -2.45 V or it is higher than
+0.5 V.
a. A failure of the control preampli
fi
er in the converter
is assumed.
=> Request checking and/or repair of the
control preampli
fi
er.
3rd Edition : May. 31, 2010-00
Содержание Vigilant Plant EXA TB Series
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