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CHAPTER 4 ND-46550 (E)
Page 68
Revision 2.0
PN-DAIB (DAIB) RUN lamp is not flashing Abnormal operation of
DAIB card
➀ Reset MB switch.
(Down→Up→Down)
➁ If fault cannot be cleared,
replace card.
LINK lamp is not on Layer 2 link connection
failure between DAIA and
DAIB
➀ Check whether cable between
DAIA and DAIB is correctly
connected. (Refer to Chapter 3,
Section 2.3.)
➁ Reset MB switch
(Down→Up→Down)
RED lamp is on PCM signal loss or Frame
Alignment signal loss
➀ Check whether cable between
DAIA and DAIB is correctly
connected. (Refer to Chapter 3,
Section 2.3.)
➁ Reset MB switch of DAIA card
on main site.
(Down→Up→Down)
RMT lamp is on Remote alarm ➀ Check whether cable between
DAIA and DAIB (sending side)
is correctly connected. (Refer
to Chapter 3, Section 2.3.)
Table 4-1 Remedial Action on Each Lamp Status (Continued)
CARD NAME LAMP STATUS FAULT CONTENT REMEDIAL ACTION