IBM 3274 51C Maintenance Information page 250

F. 1.2 Machine Characteristics
F.1.2.1 Physical Characteristics
The 51 TO diskette weighs 5.0 kg (11.0 pounds) and has a
speed of 360 rpm. See Figure F-5 for other physical
characterist ics.
F.1.2.2 Electrical Characteristics
The system supplies all the power needed to operate the
diskette drive, which includes:
• All the following:
Logic
Maximum
Voltage
Operating
(dc)
Current (A)
Tolerance
(%)
-5
0.08
±10
+5
0.50
±10
+24
0.50
±12
• A selection of the needed ae power from the following
lists:
-60 Hz, single-phase, ac power
230mm
(9 inches)
Figure F-5. 51 TD Physical Characteristics
Input
Average
Input
Voltage Operating
Voltage (V)
Range
Current (A)
100
90-110
0.30
110
96.5-119 0.30
120
104-127
0.30
127
111-137 0.30
200
180-220
0.20
208
180-220 0.20
220 193-238
0.20
240
208-254 0.20
-50 Hz, single-phase, ac power
Input Average
Input
Voltage
Operating
Voltage (V)
Range Current (A)
100.
90-110
0.30
110
96.5-119 0.30
200
180-220
0.25
220
193-238 0.20
230
202-249 0.20
240 210-259
0.20
Appendix F. IBM 51 TD Diskette Drive Maintenance F-5