User manual

DEFINITY Enterprise Communications Server Release 6
Maintenance for R6vs/si
555-230-127
Issue 1
August 1997
Maintenance Object Repair Procedures
Page 10-1258TAPE (Tape Unit) [G3iV1.1-286]
10
■ Issue the test tape long repeat 3 command, or, for a High or
Critical Reliability system, the test tape [a|b] long repeat 3
command.
If all tests pass:
The alarm should be cleared ([G1 Only] unless Error Type #1793,
#1828, #2049, or #2084 is present, in which case 48 hours must
elapse). The problem was that the original tape drive was defective.
(To see the hardware errors against the TAPE MO, issue the
display errors command. Enter "a" in the Interval field and "tape" in
the Category field.)
If any of the tests fail, proceed to Step 6.
6. Determine if the defective tape drive has damaged the tapes.
■ Clean the tape drive head again since the main tape may have left
abrasive particles on the tape drive head during the execution of
the test tape commands.
■ Insert a new tape (not the one used in Step 4).
!
CAUTION:
Make sure that the tape is not write-protected and that the
new tape contains the same or newer vintage of software
compared to the vintage currently in the system.
■ Issue the test tape long repeat 3 command, or for a High or
Critical Reliability system, the test tape [a|b] long repeat 3
command.
If all tests pass:
The alarm should be cleared ([G1 Only] unless Error Type #1793, #1828, #2049,
or #2084 is present, in which case 48 hours must elapse). The problem was that
the original drive is defective and that it damages any tape you put in it. (To see
the hardware errors against the TAPE MO, issue the display errors command.
Enter "a" in the Interval field and "tape" in the Category field.)
If the alarm persists, the cause of the problem is either the Maintenance/Tape
Processor (MTP) residing on the TN773 Processor circuit pack or the Shared
Memory (SRAM) on the TN770 Memory circuit pack. Replacement of either of
these two circuit packs in a Standard system requires powering down of the
control carrier. Therefore, use the following procedures to determine that there
is a good (bootable) tape with the customer’s translations (since the main and
backup tapes may have been corrupted and, as a result, would then prevent the
successful reading in of translations during power-up).
NOTE:
Follow Steps 7 through 10 for Standard systems and Steps 11 through 13
for High or Critical Reliability systems.