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Maintenance Object Repair Procedures
555-233-123 10-1478 Issue 4 May 2002
Speech Synthesis Memory Test (#166)
The encoded speech for the Speech Synthesis circuit pack is stored in on-board
read-only memory. A checksum is computed for each 32K speech memory block
and compared against a known checksum value. If all computed checksum
values are successfully compared against the stored checksum values, the test
passes. If, while testing the speech complex memory, the on-board
microprocessor finds a memory error, the test is terminated and a failure is
reported. This type of failure may affect other ports on the Speech Synthesis
circuit pack, resulting in errors or alarms on each port.
2000 ABORT Response to the test request was not received within the allowable
time period.
2100 ABORT Could not allocate the necessary system resources to run this test.
1. Retry the command at one-minute intervals a maximum of 5
times.
Any FAIL The 440-Hz tone was not detected by the Tone Detector circuits.
1. If the test fails again, verify all Tone Detector circuit packs in
the system are functioning correctly by checking the Error Log
and using the test board PCSS long command. Replace any
faulty Tone Detector circuit packs and repeat the test.
2. If the test fails again, replace the Speech Synthesis circuit
pack.
PASS The 440-Hz tone has been detected correctly. User-reported
troubles should be investigated using other tests and verifying
other ports on this circuit pack are working correctly.
Table 10-560. TEST #165 Speech Synthesis DSP Tone Test — Continued
Error
Code Test
Result Description/Recommendation
Continued on next page