11. System Diagnostics
Express5800/R310g-E4, R320g-E4, R320g-M4 Maintenance Guide (Windows)
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Chapter 1 Maintenance
Note
Check the PRIMARY lamp on the front side of CPU/IO module to know
whether it is primary or not (Refer to
Chapter 1 (6.1 Error Indication by LED)
. If
PRIMARY lamp is not lightened up, it is secondary CPU/IO module at present.
If you want to change secondary CPU/IO module into primary CPU/IO module
while the power is not turned on, remove the power cables connected to both
CPU/IO modules. After 30 seconds elapse, connect the power cable to primary
CPU/IO module that you desire. After waiting for enough time (15 seconds or
more), connect the power cable to the other CPU/IO module.
After Sytem Diagnostics are completed, put back all the hard disk drives, which are removed, to original
locations. And make sure to switch back the primary and secondary CPU/IO modules as they were
before.
8. That would complete System Diagnostics. After reconnecting removed periphery cables, start the sytem.
Remove EXPRESSBUILDER DVD from the drive.
Important Do not start EXPRESSBUILDER while hard disk drives are installed to both
primary and secondary CPU/IO modules.
