6-A

SYSTEM MESSAGES

System Failure

Default Alarm:

Default Grade:

Grade Modified:

Lamp Modified:

NON

3

(FIXED) NON

(FIXED) 3

 

 

 

 

This message displays when any of the following faults are detected:

Power failure

Fuse blowing

In-Frame abnormal temperature

1: XX00 XXXX 0000 0000 2: 0000 0000 0000 0000 3: 0000 0000 0000 0000

➁ ➂

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

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Probable cause for failure

 

 

 

b0:

Input power (-48V) down/abnormal detected

 

 

b7

 

b4

b3

b2

b1

b0

 

b1:

PWR Supply abnormal detected

 

 

 

 

 

 

b2:

PWR Supply Fuse Blown detected

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

b3:

Abnormal temperature MJ (70ºC (158ºF))

 

 

 

 

 

 

 

 

 

 

 

 

 

 

b4:

Abnormal temperature MN (60ºC (140ºF))

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Frame in which a fault is detected b7 b6 b5 b4 b3 b2 b1 b0

b0-b3: Frame No. (0 Only)

0/1 = CPU is mounted/Not mounted b4, b5: Frame Group No.

b6, b7: Kind of frame 00 = IMG

Factor of failure

 

 

 

 

b0:

0/1 = -/OBP Alarm 0 side

b7

 

 

b4

b3

b2

b1

b0

b1:

0/1 = -/OBP Alarm 1 side

 

 

b2:

0/1 = -/OBP Alarm MISC side

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

b3:

0/1 = -/Power Alarm 0 side

 

 

 

 

 

 

 

 

b4:

0/1 = -/Power Alarm 1 side

 

 

 

 

 

 

 

 

Reference: See Chapter 5, Section 8, for the repair procedure.

NDA-24300CHAPTER 3

Page 87

Issue 1

Page 114
Image 114
NEC NDA-24300 System Failure, ➀ Probable cause for failure, Reference See , , for the repair procedure, NON Fixed NON