Troubleshooting; Figure 6-2 An I/O Unit (4-Slot Mount Base) And The Locations Of The Operation Indicators - Hitachi HSC-2100 Hardware Manual

6 MAINTENANCE

6.2 Troubleshooting

If a problem arises with the programmable controller, troubleshoot the problem based on the
indications given by the operation indicators of the power supply, remote I/O station, and I/O
modules.
Operation indicators

Figure 6-2 An I/O Unit (4-Slot Mount Base) and the Locations of the Operation Indicators

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