NEC NEAX 2000IVS2, Maintenance Manual

Page: 148 / 156

NEAX2000 IVS
2
Maintenance Manual
Page 140
ND-70926 (E), Issue 3.0
CHAPTER 2 TROUBLESHOOTING
Fault Diagnosis and Troubleshooting
ATTCON SELF-TEST PROCEDURE
The ATTCON has a self-test function performed on an off-line basis. The self-test procedure is
as follows:
ATTCON means SN610 ATTCON (4-wire type ATTCON) and SN708/709/712/741 ATTCON
(2-wire type ATTCON). SN716 DESKCON has no self test function.
OPERATION LCD DISPLAY
(1) Remove the modular cord.
(2) Reconnect the modular cord while
pressing Digit Key 0.
(3) Press Function Key 01.
•
The green lamp will light.
(4) Press Function Key 01 again.
•
The green lamp will turn red.
(5) Press Function Key 01 again.
•
The red lamp will go off.
(6) Repeat above steps (3)-(5) for other
Function Keys 02-12.
(7) Press Function Key 13.
•
The red lamp will light.
•
Ringer will sound.
(To stop the ringer, press any key
other than Function Keys 13-18, 90,
91.)
(8) Press Function Key again.
•
The red lamp will go off.
•
The ringer will sound.
(9) Repeat above steps (7) and (8) for
other Function Keys 14-16.
START
A
** DIAL 0 **
ATT SELF TEST MODE
** FUNC 01 **
ATT SELF TEST MODE
** FUNC XX **
ATT SELF TEST MODE
XX shows 02-12
** FUNC 13 **
ATT SELF TEST MODE
** FUNC XX **
ATT SELF TEST MODE
XX shows 14-16