IBM 2254 Hardware Maintenance Manual

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Contents

6 IBM : Hardware Maintenance ManualPhysical specification — small desktop modelDimensionsHeight: 88 mm (3.4 in.)Width: 305 mm (12.0 in.)Depth: 380 mm (14.9 in.)WeightMinimum configuration as shipped: 8.5 kg (18 lb)Maximum configuration: 8.6 kg (19 lb)EnvironmentAir temperature:System on: 10° to 35° C (50° to 95° F)System off: 10° to 43° C (50° to 110° F)Maximum altitude: 2134 m (7000 ft)Note: The maximum altitude, 2134 m (7000 ft),is the maximum altitude at which thespecified air temperatures apply. Athigher altitudes, the maximum airtemperatures are lower than thosespecified.Humidity:System on: 8% to 80%System off: 8% to 80%Electrical inputInput voltage:Low range:Minimum: 90 V acMaximum: 137 V acInput frequency range: 57–63 HzVoltage switch setting: 115 V acHigh range:Minimum: 180 V acMaximum: 265 V acInput frequency range: 47–53 HzVoltage switch setting: 230 V acInput kilovolt-amperes (kVA) (approximate):Minimum configuration as shipped: 0.08 kVAMaximum configuration: 0.30 kVANote: Power consumption and heat output varydepending on the number and type ofoptional features installed and the power-management optional features in use.Heat output (approximate) in British thermal units (Btu)per hour:Minimum configuration: 205 Btu/hr (60 watts)Maximum configuration: 375 Btu/hr (120 watts)AirflowApproximately 0.25 cubic meters per minute (9 cubicfeet per minute) maximumAcoustical noise-emission valuesAverage sound-pressure levels:At operator position:Idle: 38 dBAOperating: 43 dBAAt bystander position - 1 meter (3.3 ft):Idle: 33 dBAOperating: 37 dBADeclared (upper limit) sound-power levels:Idle: 3.75 belsOperating: 4.99 belsNote: These levels were measured in controlledacoustical environments according to theprocedures specified by the AmericanNational Standards Institute (ANSI) S12.10and ISO 7779 and are reported in accordancewith ISO 9296. Actual sound-pressure levelsin a given location might exceed the averagevalues stated because of room reflections andother nearby noise sources. The declaredsound-power levels indicate an upper limit,below which a large number of computerswill operate.Note: The computer is classified as a Class A orClass B digital device. See the Quick Referencefor further information about thisclassification.