IBM 7133 Series Service Manual

| Environment (Models 500 and 600)OperatingEnvironmentNonoperatingEnvironmentStoringEnvironmentShippingEnvironmentAir temperature 16°C to 32°C(61°F to 90°F)10°C to 43°C(50°F to 109°F)1°C to 60°C(34°F to 140°F)–40°C to 60°C(–40°F to 140°F)RelativeHumidity8% to 80%noncondensing8% to 80%noncondensing5% to 80%noncondensing5% to 100%condensing butnot precipitatingMaximum wet bulb 23°C (73°F) 27°C (80°F) 29°C (84°F) 29°C (84°F)AltitudeOperatingEnvironmentNonoperatingEnvironmentStoringEnvironmentShippingEnvironmentAltitude(from sea level)0 to 2133 m(0 to 7000 ft)–305 to 12 192 m(–1000 to 40 000 ft)–305 to 12 192 m(–1000 to 40 000 ft)–305 to 12 192 m(–1000 to 40 000 ft)Heat Output (Maximum)Base configuration 140 watts (478 Btu per hour)Expanded configuration 275 watts (938 Btu per hour)Maximum configuration 480 watts (1638 Btu per hour)Capacities of Disk Drive ModulesThe capacities that are given here for the different types of disk drive module apply whendata is stored in 512-byte logical blocks.Disk Drive ModuleTypeActual FormattedCapacity1.1 GB 1 126 337 536 bytes2.2 GB 2 255 098 368 bytes4.5 GB 4 512 701 440 bytes| 9.1 GB| 9 100 191 744 bytesPower SequencingAll the disk drive modules start their power sequence when the input voltage is inside thespecified limits. Their motors are started under control of the SSA adapters in the usingsystem. To prevent the need for excessive electrical current, the disk drive module motorsare not all started together. A maximum of four motors in the front of the 7133 and fourmotors in the back of the 7133 can be started together. At least 10 seconds must elapsebefore the next group of motors is started. Normally, all the disk drive module motors arerunning in less than 30 seconds from the time the 7133 is turned on.1-34 7133 Service Guide