NEC NDA-24300 manual Speech Path TSW System Fault, Faulty Situation Reference Section

FAULT REPAIR PROCEDURES

5.SPEECH PATH (TSW) SYSTEM FAULT

This section explains the fault repair procedure when any of the faults shown in Table 5-7has occurred in the whole system.

Table 5-7 Speech Path (TSW) System Fault Situation

FAULTY SITUATION	REFERENCE SECTION
• Noise, one-way speech, no tone	Section 5.2, Speech Path System Fault - Fault
• Even if dialing has been made, dial tone does not stop.	Related to Speech
Dial tone cannot be heard.	Section 5.3, Speech Path System Fault - When Dial
	Tone (DT) Cannot Be Heard
A fault occurring in the STBY side TSW is indicated by a system	Section 5.4, Speech Path System Fault - STBY Side
message or an alarm lamp.	Has Become Faulty

5.1Check Point

When repairing a speech path fault, consider that when any of the faults shown in Table 5-7have occurred in the system, it is possible that the TSW circuit card is at fault. Always check the alarm lamps on the TSW circuit card.

CHAPTER 5 NDA-24300

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