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C-8
C122-E001-10EN
Appendix C Power Control
C.1.1.4 Power-off procedure (PRIMEQUEST 520A/520/420)
Power-off procedure
1
Turn off the main unit.
Use the management board (MMB) for the power-off operation. For details, see
Section C.1.2, "Power-on and power-off procedures for the entire system."
2
Confirm that only the following LEDs of the OPL and the MMB are lit:
•
MMB-Ready LED of the OPL
•
Power LED of the MMB
•
Ready LED of the MMB
•
Active LED of the MMB
3
Disconnect the power cable from the power distribution box.
Data destruction
When power to the main processing unit is turned off in an operation from the
MMB, only the following LEDs of the OPL and the MMB stay lit:
z
MMB-Ready LED of the OPL
z
Power LED of the MMB
z
Ready LED of the MMB
z
Active LED of the MMB
Before turning off the main power (UPS, power distribution box, circuit breaker
switches, etc.), be sure to confirm that all LEDs other than the above are off.
Otherwise, turning off the main power may cause damage to data.
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