NEC NDA-24300 manual ATTCON/DESKCON Fault, ATTCON/DESKCON Control

Models: NDA-24300

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FAULT REPAIR PROCEDURES

3.ATTCON/DESKCON FAULT

This section explains the fault repair procedure when a specific Attendant Console (ATTCON) is in any of the following faulty conditions.

No speech can be made.

No operations can be made.

3.1 Check Point

When repairing an ATTCON/DESKCON fault, consider the following items:

(1)Check the cable connections on the backplane.

(2)When replacing the ATI circuit card for master ATTCON/DESKCON, the system is placed under Night Mode during replacement procedure.

(3)When replacing the master ATTCON/DESKCON, the system is placed under Night Mode during replace- ment procedure.

3.2ATTCON/DESKCON Control

Each ATTCON/DESKCON is controlled from an ATI (PA-CS33) circuit card. The ATI circuit card is con- trolled from the CPU card via the INT on the TSW card. Figure 5-3shows the control route of the ATI circuit card.

The ATI (PA-CS33) circuit card is used as an interface card between the PBX and ATTCON/DESKCON. The card is mounted in Slots 12 or 23.

NDA-24300CHAPTER 5

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Page 356
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NEC NDA-24300 manual ATTCON/DESKCON Fault, ATTCON/DESKCON Control