IBM FlashSystem 900, Service Manual

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Safety
b. Put CB1 ON.
c. Power ON the 3745 and the 3746-900 (power control function to Local on the control panel).
d. Operate the EMERGENCY switch to POWER OFF (O) and check that:
1) The 3745 and the 3746-900 are powered OFF.
Note
In the 3746-900, the primary powers (ACDC) or filters section (DCDC) stay energized.
For total disconnection:
1. Turn the CBs OFF
2. Remove all the power plugs from supply outlets or shutdown the installation.
2) The diskette and disk drives are stopped.
3) All the fans are stopped (except the MOSS on the 3745 Models 21A to 61A which is sup-
plied by the PS6 24 V).
4) The convenience outlets on the 3745 are not supplied with ac power.
e. Relatch the EMERGENCY switch, then power ON the controller.
8
Power ON Indicator
Once the controller is powered ON, check that:
a. The Power ON indicator on the 3745 control panel is lit.
b. The Ready LED and the Standby LED (on the 3746-900 control panel) are lit according to the
table shown in “Control Panel LED Status Versus 3746-900 States.”
Control Panel LED Status Versus 3746-900 States
Table 0-3. LED Status Versus 3746-900 States
Standby
LED Ready LED 3746-900
State Comment
Blinking OFF AC ON Initialization of the CBSP hardware, and the 3746-900 waits for
first recognition by the MOSS-E on LAN connection.
ON OFF Standby The 3746-900, initially recognized by the MOSS-E, waits for a
power ON condition (only the CBSP EEPROM code is
running).
OFF Blinking Power ON IML loading in all 3746-900 processors.
OFF ON Ready The 3746-900 is now available.
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3746-900: Service Guide