Hitachi GR4000 Series Installation Manual page 159

Power supply unit 1-1
（POW1-1）
Power supply unit 0-1
（POW0-1）
Power supply unit 1-0
（POW1-0）
Power supply unit 0-
0（POW0-0）
Figure 4.11-3 GR4000-320E (AC) powered on
!
(2) Powering off the GR4000-320E (AC)
Set all the breakers attached to the device to OFF.
WARNING: THE GR4000 HAS MULTIPLE POWER SOURCES WHEN IT HAS A
!
520-10-014-20X
Caution: Wait at least two seconds before restarting the GR4000 once it has been
powered off.
REDUNDANT POWER SUPPLY UNIT, EACH HAVING A SEPARATE SOURCE OF
MAIN POWER. WHEN POWERING OFF THE DEVICE, MAKE SURE THAT ALL
THE POWER SWITCHES AND CIRCUIT BREAKERS ATTACHED TO IT ARE SET
TO OFF.
Caution: While the access indicator of BCU (ACC lamp) is lit, the memory card is being
accessed. DO NOT pull out a memory card or turn off the power switch while the
memory card is being accessed. If so, you could permanently damage the
memory card.
GR4000 Installation Guide Version 1.00 - Preliminary
4. set to ON.
3. set to ON
2. set to ON
1. set to ON
ON
OFF
Power switch
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