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NDA-24300 CHAPTER 5
Page 349
Issue 1
FAULT REPAIR PROCEDURES
5.2 Speech Path System Fault - Fault Related to Speech
Faulty Situation:
• Fault related to speech such as noise, one-way speech, no-speed, etc. occurs.
• Even if dialing started, Dial Tone (DT) does not stop.
• [1-C] Both TSW Write Failure
• [1-D] TSW Write Failure
(1) For Dual Configuration
Check to see if fault occurs by extracting
TSW circuit cards one by one.
Replace the TSW circuit card referring to
Section 2.3.2, TSW Card Replacement
Procedure, in Chapter 4.
Place the TSW 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 TSW circuit card
responsible for the fault.
Perform the above check by extracting the
TSW circuit cards individually.
Check to see if fault occurs by extracting
MUX circuit cards one by one.
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.
ATTENTION
Contents
Static Sensitive
Handling
Precautions Required
START
A
B