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Maintenance Object Repair Procedures
555-233-123 10-1368 Issue 4 May 2002
System Technician-Demanded Tests: Descriptions
and Error Codes
Always investigate tests in the order presented in the table below. By clearing
error codes associated with the MTP Reset Test, for example, you may also clear
errors generated from other tests in the testing sequence. The following table is
for the TN2404/TN790 [RISC] System.
Notes:
a. Refer to PROCR (TN2404/TN790 RISC Processor) for a description of
these tests.
b. Refer to PR-MEM (TN2404/TN790 RISC Memory) for a description of
these tests.
c. This test is run only on the standby SPE in a high or critical reliability
system. On other systems or on the Active SPE, the test is run only via a
reset system 4 command or a reset system 5 command.
d. This test only runs on the active SPE.
e. This test aborts if an external modem is not administered.
Order of Investigation
Short Test
Sequence
Long Test
Sequence
D/ND
1
1 D = Destructive; ND = Nondestructive
Processor Cache Test (#895)(a) X ND
Processor Cache Audit (#896)(a) X X ND
Processor Bus Time-out Exception Test (#82)(a) X X ND
Processor BOOTPROM Checksum Test (#80)(a) X X ND
Processor Write Buffer Test (#900)(a) X X ND
Memory Burst Read Test (#908)(a) X X ND
Read All Memory Test (#85)(a) X ND
Memory Parity Error Detection Test (#87)(a) X X ND
Flash Memory Checksum Test (#86)(a) X ND
Memory Functional Test (#332) (b)(c) X D
MTP Outpulse Relay Test (#102)(d) X X ND
External Modem Present Test (#230)(d)(e) X X ND
MTP Analog Loop Around Test (#103)(d) X X ND
MTP Sanity Handshake Test (#106) X X ND
MTP SAT Loop Around Test (#228) X X ND
MTP Aux Loop Around Test (#229) X X ND
MTP Reset Test (#101) X D
MTP Dual Port Ram Test (#104)(d) X D