Chapter 7. Maintenance And Inspections 7-1 To; Daily Inspections; Regular Inspections - Hitachi EH-150 Applications Manual

Chapter 7 Maintenance and Inspections
7.1

Daily inspections

Check the following items to ensure the operational status of the equipment. Refer to Chapter 6 (Error
Displays and Troubleshooting) for further details on errors.
Item
Link system
participation status
Error display LED
confirmation
Data transmission and
receiving
7.2

Regular inspections

Check the following points without any power applied for both I/O signals and power line.
Check
connector is tightened firmly.
Check whether the case and connectors are
clean.
Perform the regular inspections once every six months. The inspection cycle may be speeded up in
accordance with the environment in which the modules are installed.
Table 7.1 Daily inspection items
LED Normal
RUN LED ON
ERR LED OFF
TXD LED
Blinking
RXD LED
Table 7.2 Regular inspection items
Item
whether the transmission
Chapter 7. Maintenance and Inspections
Abnormal
OFF
ON or
Depending on
Blinking
each error display.
ON or OFF
cable Tighten
Remove dusts by a vacuum
cleaner
7-1
Error cause
Method