IBM B-Series, Maintenance Information

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Power Cords:
A ship group provides the power cords needed to implement the electrical environment
for the device. The power cords are 10-ampere line cords that provide either one-phase or two-phase
power and ground, with an appliance coupler at the device end of the cord. The other end of the cord is
determined by application and country and can be ordered by the customer.
See IBM Magstar MP 3570 Tape Subsystem Introduction and Planning Guide, B-Series Models for a list
of part numbers of power cables by country.
Power Control:
All 3570 models have a power-control switch located on the front of the devices.
Input-power overload protection is provided by an automatic (reset) circuit breaker.
There is no power-on indicator on the device. All models have LEDs on the front. These LEDs are turned
ON with power ON for a short time. The microcode turns OFF the LEDs after a checkpoint in the
power-on self-test (POST). Library models have operator panels where power-on status is displayed after
the LEDs have been turned OFF.
Remote power control is not the responsibility of the IBM 3570 Tape Subsystem. If required, it is provided
by the enclosure or higher level subassembly.
Figure 23. AC Input Voltages
Frequency
Frequency
Tolerance Input Voltage (VAC-RMS)
Nominal Input Voltage (VAC-RMS)
Minimum-Maximum
50 Hz
±
0.5 Hz 100
110
200
220
230
240 90–110
96.5–119
180–220
193–238
202–249
210–259
60 Hz
±
0.5 Hz 100
110
120
127
200
208
220
240 90–110
96.5–119
104–127
111–137
180–220
180–220
193–238
208–254
INTRO-12
IBM 3570 MI