CHAPTER 2 TROUBLESHOOTING
– 190 – NWA-008847-001 Rev.3.0
a6ch2001.fm
Remedial Action on Each Lamp Status
Continued on next page
CARD NAME
LAMP
STATUS
FAULT
CONTENT
REMEDIAL ACTION
PN-IPTB
(IPT)
RUN lamp is not
flashing
Abnormal opera-
tion of IPT card
Check whether the MODE switch is
set to 0 or 1.
(Standard setting: 0)
Confirm the programming data:
CM05 Y=0, CM06.
Reset the system (Push the SW1 of
MP).
Check to see if the SENSE and SW1
switch is set as per the AP Number
(04-15, 20-31) assigned by CM05
Y=0.
If the fault cannot be cleared,
replace the card.
BUSY lamp is not
on, when even one
line is busy
Abnormal opera-
tion of IPT card
Confirm the programming data:
CM30.
Reset the MB switch.
(Down Up Down)
If the fault cannot be cleared,
replace the card.
SUBOPE0-3 lamp
is not on
Abnormal connec-
tion between IPT
and 4VCT
Check to see if the cable between
IPT and 4VCT is correctly con-
nected.
Reset the MB switch.
(Down Up Down)
If the fault cannot be cleared;
Replace the cable between IPT and
4VCT.
Replace the 4VCT card.
Replace the IPT card.
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FAULT DIAGNOSIS AND TROUBLESHOOTING
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