NEC ND-71762(E) system manual Maintenance Procedure

MAINTENANCE PROCEDURE

“13-D”: CCH Lock Up Failure (Permanent)

(1)Meaning

The system message “13-D” indicates that a PM (Port Microprocessor) of CCH/CCT card did not send CPU card an answer and this has occurred more than 15 times within an hour. When this fault has occurred, the specific PM is placed into make-busy state and restarted.

Note: The CPU transmits the Routine (cyclic) diagnostic command to all the PM’s at a predetermined cycle. Each PM upon receiving the Routine (cyclic) diagnostic command from the CPU, returns an answer to the CPU within a predetermined timing. The CPU checks the normality of the PM upon receiving an answer.

(2)Related System Message

When the PM Lock Up Failure occurs less than 16 times within an hour, the Phase 1 restart or Phase 3 restart is executed at the specific PM and the system message “13-E” is output.

(3)Example of Printout

SYSTEM MESSAGE 13-D [SUP]		CCH LOCK UP FAILURE (PERMANENT)
NEC TOKYO		MAY 14 10:30
LP00-0-ACT
1: XX00 0000 0000 0000	2: 0000 0000 0000 0000		3: 0000 0000 0000 0000
(a)	5: 0000 0000 0000 0000		6: 0000 0000 0000 0000
4: 0000 0000 0000 0000
7: 0000 0000 0000 0000	8: 0000 0000 0000 0000		9: 0000 0000 0000 0000

(4)Message Detail Data

(a)Accommodated location of the CCH detected fault. (Refer to paragraph 2.2.1)

MG

U

G

MG: Module Group

U:Unit

G:Group

CHAPTER 8 ND-71762 (E)

Page 96

Issue 2