IBM FlashSystem 900, Service Manual

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Safety
– Page YZ576 for the power box PS Type 6 voltage adjustment
– Page YZ578 for the power supply PS Type 8 voltage adjustment.
Check that:
– The power rating plate of the 3745 is consistent with the voltage level measured at the cus-
tomer's power supply. If not, inform your branch office.
3746-900 Input Power Voltage
The power rating plate indicates the voltage range available and the frequency (50/60 Hz).
The 3746-900 voltage range is 200/220/240.
Check that:
¹
The power rating plate of the 3746-900 is consistent with the frequency and the voltage meas-
ured at the customer's power supply. If not, inform your branch office. Refer to “3746-900
Safety Label Identifications” on page lxxxv for power rating plate location.
dc Input Voltage
For dc input, the customer's voltage must be within -40.0 V to -60.0 V. There is no adjustment
for the optional dc input.
ac Input Voltage
For ac input, the customer's voltage must be within 180 V to 260 V.
Adjustment of the input voltage can be done according to the customer voltage on TB1 of the
transformers located at the rear of the 3746-900.
Important Note:
Since the 3745 can be remotely powered ON, all the following procedures must be performed with the
power control function on the 3745 and the 3746-900 control panel set to Local mode.
Controller Expansion Input Power Voltage
The power rating plate indicates the voltage range available (200/240) and the frequency (50/60 Hz).
Check that the power rating plate of the controller expansion is consistent with the frequency and the
voltage measured at the customer's power supply. If not, inform your branch office. Refer to “Controller
Expansion Label Locations” on page lxxxvi for power rating plate location.
7
Test of the Emergency Power OFF
a. Ask the customer to connect the power cord to the customer's mains supply.
Table 0-2. ac Input Adjustment
Voltage
Measured Wire
Position Nominal
Voltage
From 180
to 210 Volts TB1-2 200/208 Volts
From 210
to 230 Volts TB1-3 220 Volts
From 230
to 260 Volts TB1-4 240 Volts
SAFETY
xxxv