Maintenance Object Repair Procedures
555-233-123
10-1026 Issue 4 May 2002
MGR I Channel Local Loop Around Test (#228)
This test is destructive.
This test checks the on-board circuitry of the EPN Maintenance circuit pack
associated with the serial link for the terminal connection. This test does not
cause the terminal to become disconnected. However, any data being displayed
on the terminal while the test is running is lost. Figure 10-62 shows the three serial
interfaces on the EPN Maintenance circuit pack and is meant to clarify that only
the one dealing with the EPN terminal is being tested.
Figure 10-62. EPN Manager I (G1) or G3MT Connection
Table 10-371. TEST #228 MGR I Channel Local Loop Around Test
Error
Code
Te s t
Result Description/Recommendation
1000 ABORT System resources required to run this test are not available.
2000 ABORT Response to the test request was not received within the
allowable time period.
2033 ABORT Internal system error
1. Retry the command at 1-minute intervals a maximum of 5
times.
Continued on next page
ACTIVE LINK
STANDBY LINK
EXPANSION INTERFACE
CIRCUIT PACK
M
G
R
1
EPN MAINTENANCE CIRCUIT PACK
SERIAL INTERFACES
MGR 1 SERIAL
INTERFACE
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