Yokogawa Standalone MW100 - Manual (Page 120)

App-18
IM MW100-17E
Appendix 7 Error Display on the 7-Segment LED
and Corrective Actions
The main module has a two-digit 7-segment LED. The 7-segment LED displays the
system status.This section describes the displays on the 7-segment LED when errors
occur on the system and their corrective actions.
If servicing is necessary, or if the instrument is not operating correctly after performing
the corrective actions below, contact your nearest YOKOGAWA dealer.
Errors upon Startup
The left and right digits of the 7-segment LED display “b” and an error code, respectively.
The LED illuminates.
Display Possible Problem Corrective Action
b* (where * is The dipswitch settings are not correct. Turn OFF the power, remove the CF card, turn ON all dip , switches
any character and power up again. If the situation does not change servicing is
other than F). required.
bF The dipswitch settings are not correct. Power up in setup reset mode.Turn OFF the power, turn ON all
dipswitches, and power up again. Since all settings such as the IP
address are initialized, reconfiguration is necessary.
System Errors
The left and right digits of the 7-segment LED display “F” and an error code, respectively.
The LED illuminates.
Display Possible Problem Corrective Action
F0 System ROM error. Servicing required.
F1 SRAM error Servicing required.
F2 EEPROM error Servicing required.
F3 Error in the internal battery of the Servicing required.
main module. However, this error is also displayed immediately after the battery is
replaced. If this happens, power-cycle the MW100.
F4 Ethernet controller error Servicing required.
F6 Web file load error Servicing required.
FF Error in writing unit information. Servicing required.
Module Errors
The left and right digits of the 7-segment LED display are U and an error code,
respectively. The LED illuminates.
In the case of module errors, the error number and the corresponding module number
are displayed alternately as shown in the figure below.
Error number Module number
Display Possible Problem Corrective Action
U0 Range information error. Servicing required.
U1 Calibration value error. Check the module’s installation status, then recalibrate the module.
If the error occurs even after recalibrating, servicing is required.
U2 Calibration reference voltage is not Check whether the correct calibration reference voltage is or being
correct. applied or whether the channel to which the voltage is applied is
(during calibration) correct.
U3 Error in writing the calibration value. Servicing required.
U4 The installed module cannot be used. Replace the module with one that can be used.