7
7 - 1
No. 99MBC095A
This chapter describes the method of maintenance and troubleshooting, as
well as the contents of the error messages and remedies.
INSPECTION AND
MAINTENANCE
7.1 Display Unit
The Display Unit will, if it is turned on, perform a self-check.
7.1.1 Display check
• If the power is on, display check mode is entered.
All LEDs and display sections turn on and then turn off. Then digit 8 turns on succes-
sively [888···8] from the upper display section: during which check the display elements if
they are normal and uniform in intensity.
• Internal circuit checking is carried out and if found to be normal, LD1 ON LED turns on
(LD1 ON and LD2 ON LEDs turn on if performing dual-unit measurement). Then the
BUSY LED starts flashing and measurement will start from the ready state.
• Error message will be displayed if abnormality is detected during selfcheck of the internal
circuit. For details of error message, refer to 7.3, “Error Messages and Remedies”.
7.1.2 Cleaning method
If the Display Unit is contaminated, unplug the power cord from the inlet first, then wipe
lightly with a soft dry cloth for the operator’s safety.
