Maintenance Object Repair Procedures
555-233-123
10-500 Issue 4 May 2002
Data Channel Local Loop Back Test (#111)
Hardware and software share the dual port RAM. This non-destructive test
verifies the dual port RAM integrity. The test loops back data from the DATA-CHL
to the DATA-CHL, within the dual port RAM, and checks that the DATA-CHL
receives the data it sent.
NOTE:
If Error Code recommend busying out a CDR, System Printer, Journal
Printer, and/or PMS Link, restore each busied out link to service according
to Maintenance documentation, before concluding work on the problem.
Table 10-183. TEST #111 Data Channel Local Loop Back Test
Error
Code
Tes t
Result Description/Recommendation
4 ABORT Error Code 4 can mean 1 of 2 problems:
1. Target DATA-CHL is busy and, therefore, not available for
use.
2. Internal system error.
If the results of Tests #110 and #111 are both PASS, then there
is a high probability that the target DATA-CHL is not defective.
Proceed with the remaining steps only if it is necessary to
completely test the target DATA-CHL:
1. Determine if errors exist on links using target DATA-CHL
(status link).
2. If there are no errors, busyout the links (busyout link).
3. Retry the command at 1-minute intervals, up to 5 times.
4. Restore any busied out links.
40
70
75
ABORT Internal system error
1. Retry the command at 1-minute intervals, up to 5 times.
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