NEC NDA-24300 Replace the MUX circuit card with a, Spare, and check it, Faulty system into Stby

A
	Replace the MUX circuit card with a
	spare, and check it.
END	If the connection is set up, set
	the faulty system into STBY
	side.

FAULT REPAIR PROCEDURES

ATTENTION

Contents

Static Sensitive

Handling

Precautions Required

Replace the MUX circuit card referring to Section 3.3.2, MUX Card Replacement Procedure in Chapter 4.

Place the MUX circuit card into ACT mode by flipping the MBR key on the active GT (PH-GT09) card. Refer to Section 12.1.6, Manual System Changeover of Speech Path System, in Chapter 6.

Check to see if a station-to-station connection can be set up and identify a circuit card responsible for the fault.

Perform the above check by extracting each MUX circuit card individually.

NDA-24300CHAPTER 5

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