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CHAPTER 4 NDA-24300
Page 280
Issue 1
UNIT/CIRCUIT CARD REPLACEMENT PROCEDURE
Note:
After all steps are completed, check the ACT mode of TSW cards, which are in the same switching block
with the replaced PLO. Because the PLO-located MUSIC ROM supplies hold tones only to the TSW
cards belonging to the same switching block, verify all the TSW cards are also in the ACT-mode status.
Refer to Section 12, System Control Procedures, in Chapter 6.
• OPE lamp on the new card is OFF.
Note
ATTENTION
Contents
Static Sensitive
Handling
Precautions Required
END
A
Insert the new PLO card into the TSWM.
On the new PLO card, set the MB key UP.
Set the MB key on the new card DOWN.