IBM Aptiva 2124 Hardware Maintenance Service page 63

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Power off: -20° to 60°C
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Temperature for 15"/17" (13.7"/15.7" viewable image size) monitor types:
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Power on: 5° to 40°C (15"), 10° to 35°C (17")
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Power off: -20° to 60°C (15"), -20° to 60°C (17")
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Humidity for system unit:
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Power on: 20% to 80%
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Power off: 20% to 80%
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Humidity for monitor :
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Power on: 20% to 80% (15"), 8% to 80% (17")
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Power off: 20% to 90% (15"), 20% to 90% (17")
Power consumption:
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System unit:
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Maximum: 95 Watts(for 2153) and 145 Watts(for 2139)
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15" (13.1"/13.6" viewable image size) monitor types:
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Maximum: 90 Watts
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15"/17" (13.7"/15.7" viewable image size) monitor types:
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Maximum: 80 Watts (15"), 130 Watts (17")
Electrical input:
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Input voltage for system unit (Sine-wave input is required) :
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Low Range: 90 Vac to 132 Vac
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High Range: 180 Vac to 264 Vac
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Input voltage for monitor (Sine-wave input is required) :
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88 Vac to 264 Vac (15")
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90 Vac to 264 Vac (17")
General Information 1-23