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CHAPTER 5 NDA-24300
Page 342
Issue 1
FAULT REPAIR PROCEDURES
(2) For Single Configuration
Check to see if the MUX (PH-PC36)
circuit card is making poor contact.
Set the MB switch of the MUX circuit card UP.
Extract the MUX circuit card from its mounting
slot and clean the contact portion.
If cleaning cannot be done, repeat insertion and
extraction of the circuit card two or three times.
Set the MB switch of the MUX circuit card UP
and insert the circuit card into its mounting slot.
Set the MB switch of the MUX circuit card
DOWN.
Check to see if a station-to-station connection
can be set up within the faulty unit.
Check by replacing the MUX circuit card
with a spare.
Replace the MUX circuit card referring to Sec-
tion 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 to identify a circuit card responsi-
ble for the fault.
ATTENTION
Contents
Static Sensitive
Handling
Precautions Required
START
A