ATT System 25 Maintenance Manual

OPERATING THE DIGITAL TAPE UNIT
7.
8.
9.
10.Enter 1. The system responds with the complete line:
Save/Restore: Action=2 Data=1
W25: YOU ARE ABOUT TO START A TAPE VERIFY
c for continue, any other key for abort
The tape unit is automatically started by the system. Verifying
translations takes about 5 minutes.
When verification is complete, the unit stops automatically.
If verification is successful, the SAT displays:
(feature code issue, date, time, size)
followed by:
VERIFY COMPLETED SUCCESSFULLY.
Press...

OPERATING THE DIGITAL TAPE UNIT
3.
4.
5.
6.
7.
8.
9.Log on to the SAT, if not already logged on.
The system displays the main menu prompt:
Make one selection from menu ->.
Enter 9 for the SAVE/RESTORE selection.
The system responds with:
Action=, Enter 3.
The system responds with:
Save/Restore: Action=3 Data=.
Enter D. The system completes the word Data followed by the =
sign.
Enter 1. The system responds with:
Save/Restore: Action=3 Data=1
W26: YOU ARE ABOUT TO START A TAPE RESTORE
c for continue, any...

OPERATING THE DIGITAL TAPE UNIT
10.
11.
12.In the event of an unsuccessful restoration, repeat the restoration
process. Otherwise, escalate the problem to a higher support level.
Press the REWIND button to rewind the tape fully.
Be sure the tape and the backup tape are labeled and dated
accurately and stored in a secure place for future access.
7-6 

CLEARING SYSTEM-DETECTED TROUBLES
Most troubles are detected and reported via the Alarm light-emitting diode
(LED) located on the Attendant Console, the error log, and, in some cases,
the LEDs on the circuit packs (CPs). The following covers general trouble-
clearing techniques and recommends procedures for identifying and clearing
a variety of specific system troubles:
General Trouble-Clearing Techniques
l Consulting Error Log
l Reseating and Replacing Circuit Packs
l Removing and Restoring Power
l...

CLEARING SYSTEM-DETECTED TROUBLES
Note:When you remove a CP from an unused slot (slot was being used
for storage), a Port Board Out of Service error message is
generated by the missing CP and the attendant Alarm LED flashes.
You must remove the error message from the Error Log.
To remove a CP:
1.
2.
3.
4.
5.
6.
7.
Remove cabinet front cover.
Make sure your hands are clean and dry. Put on a wrist grounding
strap and attach it to the metal grounding block on the back of the
cabinet to discharge static...

CLEARING SYSTEM-DETECTED TROUBLES
8.
9.
10.
11.
To reseat a CP, slide it back firmly in its slot. When it is almost back
in place, youll feel resistance and the removal lever will start to return
to its vertical position, flush with the edge of the circuit pack.
Push the lever all the way to vertical, until it catches on the latch.
The red LED on the CP lights for up to 4 seconds during self-testing
and then goes dark when the self-test is okay. If the CP has already
been translated, the green LED...

CLEARING SYSTEM-DETECTED TROUBLES
Restarting the System
The system automatically warm starts after power is restored. (The systems
maintenance software may restart the system under certain self-detected
error conditions.) There are two types of restart: cold and warm.
A Cold Start (which takes about 4 to 5 minutes) causes the system to check
all slots for valid CP types and assign default translations to all ports, except
auxiliary trunk ports.
A Warm Start (which takes about 3 minutes) causes the system...

CLEARING SYSTEM-DETECTED TROUBLES
6.Enter 9 (for the SAVE/RESTORE selection) and press .
7.The system responds with:
Action=, Enter 10 for a warm restart.
The system responds with:
Save/Restore: Action=10 Data=.
8.Enter D. The system completes the word Data followed by the =
sign.
9.Enter 1. The system responds with:
Save/Restore: Action=10 Data=1
You are about to initiate a warm start
c to continue, any other key to abort.
10.
Press the character c to initiate the warm restart.
To perform a cold...

CLEARING SYSTEM-DETECTED TROUBLES
Table 8-A provides a listing of SAT messages that may be displayed during a
cold or warm restart. The displayed message is a result of CP occupancy,
type, and port translations.
Table 8-A. Displayed SAT Messages During Cold or Warm Restart
CIRCUIT PACK (CP)PORTDISPLAYED
IN SLOTTRANSLATEDMESSAGE
NoYesMissing
Yes
NoCP Type Listed *
YesYesCP Type Listed
YesYes (doesnt matchMismatch
physical CP)
Yes (UnsupportedYes or No
Illegal
CP Type)
* Mark indicating that the CP is...

CLEARING SYSTEM-DETECTED TROUBLES
The SAT message for a cold restart appears after the system has performed
all self-tests and reading of its configuration. The time required for a cold
start is a function of the number of CPs in the system but is generally several
minutes. A typical Version 1 cold restart SAT message is as follows:
Note:A Version 1 message lists five MEM ROM pairs while a Version 2
message lists eight MEM ROM pairs.
RESTART
CPU ROM pair
MEM ROM pair
MEM ROM pair
MEM ROM pair
MEM ROM...