NEC NEAX 2000 IPS Maintenance Manual page 238

A
LCD does not display any informa-
tion.
No Tone Ringer
END
CHAPTER 2 TROUBLESHOOTING
FAULT DIAGNOSIS AND TROUBLESHOOTING
(1) Adjust Display Contrast.
CHECK
(2) To test the LCD, perform the ATTCON
Self-Test. See
Procedure"
(1) ATTCON
REPLACE
(2) DLC card
(1) System Data Programming for the con-
CHECK
sole tone ringer: CM60 Y=16, 27
(2) Adjust Ringer Volume on the console.
(3) To test tone ringer, perform the
ATTCON Self-Test. See
Self-Test Procedure"
Page 230.
(1) ATTCON
REPLACE
– 228 –
"ATTCON Self-Test
Page 230.
"ATTCON
NWA-008847-001 Rev.3.0
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