NEC ND-71762(E) system manual Start, Supervision Fault

MAINTENANCE PROCEDURE

(5)Diagnostic Work

START

When system message 13-B is displayed, Turn ON the MBR Key on the CCH/CCT circuit card, and then set the MB key ON→OFF.

System message 13-B is displayed￿

￿￿￿￿￿￿￿

System message 13-B is not￿ displayed

END

FAULT : CCH/CCT circuit card is faulty.

Paragraphs 3.3 or 3.4

SUPERVISION FAULT

ND-71762 (E)CHAPTER 8

Page 93

Issue 2