NEC UNIVERGE NEAX 2000 IPS, Maintenance Manual

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CHAPTER 2 TROUBLESHOOTING
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NWA-008847-001 Rev.3.0
a6ch2001.fm
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 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
depressing digit key 0.
(3) Depress function key 01.
• The green lamp will light.
(4) Depress function key 01 again.
• The green lamp will turn red.
(5) Depress function key 01 again.
• The red lamp will go off.
(6) Repeat above steps (3)-(5) for other func-
tion keys 02-12.
(7) Depress function key 13.
• The red lamp will light.
• Ringer will sound.
(To stop the ringer, depress any key
other than function keys 13-18, 90, 91.)
(8) Depress 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
FAULT DIAGNOSIS AND TROUBLESHOOTING