Troubleshooting By Contents Of Complaint; Explanation Of Symbols In Troubleshooting Procedure; Figure 2-4 Sections For Troubleshooting Procedure - NEC NEAX 2000 IVS2 Maintenance Manual

Troubleshooting by Contents of Complaint

This section describes the troubleshooting method when you receive a complaint of a problem
from a station user or an operator. Select the appropriate section corresponding to the problem
in Figure 2-4 and perform the troubleshooting.

Figure 2-4 Sections for Troubleshooting Procedure

EXPLANATION OF SYMBOLS IN TROUBLESHOOTING PROCEDURE

The following markings explain the instruction marks used in the troubleshooting procedures.
: With respect to the item indicated on the right side of this mark, perform a check
CHECK
or the required work. If an abnormality is found, take the required remedial action,
such as repair, replacement, etc.
: Replace the equipment or device (considered to be the fault) indicated on the right
REPLACE
side of the mark with a spare and confirm the recovery of the fault.
2
NEAX2000 IVS Maintenance Manual
ND-70926 (E), Issue 3.0
Complaint from Station User/Operator
Station Line Fault
(1) At Calling Station
(2) At Called Station
C.O. Line/Tie Line Fault
(1) On Outgoing Call
(2) On Incoming Call
(3) On Answering Call
Power Failure Transfer (PFT) Fault
term
D Fault (Page
ATTCON Fault (Page
DSS Console Fault
ATTCON Self-Test Procedure
CHAPTER 2 TROUBLESHOOTING
(Page 121)
(Page 124)
(Page
135)
137)
(Page 139)
(Page 140)
Fault Diagnosis and Troubleshooting
134)
Page 119