Maintenance-Object Repair Procedures
555-233-143
8-1732 Issue 1 May 2002
System Technician-Demanded Tests:
Descriptions and Error Codes
Investigate tests in the order they are presented in Table 8-668. For example, by
clearing error codes associated with the Echo Cancellation test (#1420), you may
also clear errors generated from other tests in the testing sequence.
Table 8-668. System Technician-Demanded Tests
Order of Investigation
Short
Te s t
Sequence
Long Test
Sequence
Reset
Board
Sequence
test
ds1-loop D/ND
1
1. D = Destructive; ND = Nondestructive
Echo Cancellation test (#1420) X D
NPE Connection Audit test (#50) X ND
Control Channel Loop test (#52) X ND
Loss of Signal Alarm Inquiry test (#138) X X ND
Blue Alarm Inquiry test (#139) X X ND
Red Alarm Inquiry test (#140) X X ND
Yellow Alarm Inquiry test (#141) X X ND
Major Alarm Inquiry test (#142) X X ND
Minor Alarm Inquiry test (#143) X X ND
Slip Alarm Inquiry test (#144) X X ND
Misframe Alarm Inquiry test (#145) X X ND
Translation Update test (#146) X X ND
ICSU Status LEDs test (#1227) X X ND
SAKI Sanity test (#53) X D
Internal Loop-Around test (#135) X D
DS1/CSU Loopback tests:
DS1 Board Loopback test (#1209)
CSU Equipment Loopback test (#1210)
CSU Repeater Loopback test (#1211)
X
X
X
D
D
D
CPE Loop-Back Jack test (#1212) X D
Far CSU Loopback test (#1213) X D
One-Way Span test (#1214) X D
Inject Single Bit Error (#1215) X D
End Loopback/Span test (#1216) X D
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