SYSTEM MESSAGES

[42H] CPU ACT/STBY Changeover Failure (DM Verification NG or PM Verification NG)

1: 42XX 0000 0000 0000 2: 0000 0000 0000 0000 3: 0000 0000 0000 0000

 

 

➀ ➁

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4:

0000

0000

0000

0000

5:

0000

0000

0000

0000

6:

0000

0000

0000

0000

7:

0000

0000

0000

0000

8:

0000

0000

0000

0000

9:

0000

0000

0000

0000

 

 

 

 

 

 

 

 

Error detection by Routine

 

 

[42H] CPU ACT/STBY Changeover Failure

 

 

 

Diagnosis

 

 

 

 

 

 

(DM Verification NG)

 

 

 

 

 

ACT system after changeover

 

b0:

CPU

 

 

 

 

 

 

 

b7

 

 

 

b1

b0

 

 

0/1 = #0 is ACT/#1 is ACT

 

 

 

 

 

 

 

 

b1:

TSW

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0/1 = #0 is ACT/#1 is ACT

CHAPTER 3

NDA-24300

Page 146

Issue 1

Page 173
Image 173
NEC NDA-24300 manual 42H CPU ACT/STBY Changeover Failure