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Removing the input wiring board – Rockwell Automation 1394 Analog Servo System Firmware User Manual

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Installing New 1394 Analog Servo System Firmware

Publication 1394-6.1 — February 2000

Removing the Input Wiring Board

To gain access to the EPROMs on the control board, you must first
remove the input wiring board. To remove the input wiring board:

1. Remove all 24V control power, contactor enable power, and

360/480V AC input power from the system.

2. Wrap the black adhesive end of the disposable ESD wrist strap to

your wrist and secure the copper foil adhesive end to an
unpainted surface on the 1394 chassis. Ensure good adhesive
contact to your wrist and unpainted chassis surface.

3. Label and remove all external control board connections

(feedback, A Quad B, etc.). Note the location of each cable
removed for re-assembly later.

Important: Do not remove wires connected to the input wiring

board.

4.

!

ATTENTION: This product contains stored energy
devices. To avoid hazard of electrical shock, verify that
all voltage on the system bus network has been
discharged before attempting to service or repair this
unit. Only qualified personnel familiar with solid state
control equipment and safety procedures in publication
NFPA 70E or applicable local codes should attempt
this procedure.

If the 1394 system module: Then open the front door and:

Has a HIM mounted on the
front door

1.

Disconnect the cable from the
HIM module.

2.

Go to main step 5.

Does not have a HIM
mounted on the front door

1.

Disconnect the cable from the
HIM module cradle.

2.

Go to main step 5.