NEC ND-71762(E) system manual INSERTION/EXTRACTION of Circuit Cards, CCH Circuit Card

MAINTENANCE PROCEDURE

5. INSERTION/EXTRACTION OF CIRCUIT CARDS

This paragraph explains the procedure for inserting CCH, DTI, CCT and PLO/OSC circuit cards into their mounting slots and extracting them while the system is in On-Line mode.

5.1 CCH Circuit Card

(1)Procedure for Extraction:

START

Set the MBR switch (SW01-0, 1) of the CCH card UP.

Set the MB switch of the CCH card UP.

The OPE lamp (green) goes out and the N-OPE lamp (red) illuminates on the CCH card.

When the CCH card is connected with the DTI card via the front cable, remove the front cable from the CCH card.

Extract the CCH card from its mounting slot.

END

(2)Procedure for Insertion:

START

Set the MBR switch (SW01-0, 1) and MB switch of the CCH card UP.

Insert the CCH card into its mounting slot.

When the CCH card is connected with the DTI card, connect the front cable referring to CHAPTER 4 “INSTALLATION PROCEDURE”.

Set the MB switch of the CCH card DOWN.

Set the MBR switch of the CCH card DOWN.

The OPE lamp of the CCH card illuminates.

END

ND-71762 (E)CHAPTER 8

Page 119

Issue 2