Removal And Replacement Procedures; To Remove A Power Supply Module; To Remove A Nonredundant Power Supply Module - Cisco VCO/4K Mechanical Assemblies

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6.0 REMOVAL AND REPLACEMENT PROCEDURES

Follow ESD rules when removing or replacing a system component. Use a wrist strap

connected to the system for grounding. Refer to Figure 1.

WARNING: Voltages present on the power backplane and at other

test points produce severe, perhaps fatal electrical shock. Observe

all precautions normally associated with the testing of electrical

equipment.

Turn off power at the source before performing any service.

Note: Follow ESD rules when removing a system component. Use a wrist strap for

grounding.

1. Turn the switch off on the power entry module if the system does not contain

redundant power supply modules, or if both power supply modules are to be removed

simultaneously. The power disconnect switch is located in the rear of the system on the

power entry module (see Figure 3).

2. Remove the front door of the VCO/4K system to access the power supply module.

3. Connect your wrist strap to the system (upper right corner). Refer to Figure 1.

4. Remove the two mounting screws on the front panel of the power supply module.

When the upper left screw is removed, the power is cut off from the module (the power

LED is off).

Note: If the LED is faintly illuminated red, and the interlock switch screw is removed,

it is safe to remove the power module.

5. Grasp the black hand grip on the front of the module with one hand and pull the

module out. Use your other hand to provide support underneath the module as you

remove it from the system.

Removal and Replacement Procedures

VCO/4K Power Subsystem 1-13

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