Chapter 3 Installing and Removing AC and DC Input Power Supply and Fan Modules
Power Supply Module Description
Each power supply module is cooled by three internal fans. A fan failure triggers an alarm. When a fan fails, replace the power supply module immediately.
Caution Both slots must be occupied either by two power supply modules or a power supply and a fan module. Do not run the switch with an empty slot unless you are replacing a faulty power supply or fan module. Running the switch with an empty slot triggers an alarm.
Figure 3-1 AC Input Power Supply Module Handle Side
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1 | AC input power supply module | 4 | Extraction handle |
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2 | Power supply module LED | 5 | Power switch |
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3 | Power input LED | 6 | AC power connector |
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Figure 3-2 DC Input Power Supply Module Handle Side
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| 1 | DC input power supply module | 4 | Extraction handle |
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2 | Power supply module LED | 5 | DC input power terminal block | ||||||
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3 | Power input LED | 6 | Power switch | ||||||
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