AT&T Network Adapter 25 Installation And Maintenance Manual page 186

MAINTENANCE
S Y S T E M
T R O U B L E
REPORTED
CAP ALARM
REPORTED
SYSTEM OR CANNOT
READ PERMANENT ACCESS ERROR LOG DEFECTIVE
SYSTEM ALARMS
TABLE IN ERROR
C H E C K
L O G :
L E D
A N D C H E C K
CIRCUIT BOARDS
C P U / M E M O R Y
AND POWER LED
CIRCUIT FRONTPLANE/
STATUS
BACKPLANE DIAGNOSTIC
TYPE OF TROUBLE INDICATED
BY THE LEDS AND ERROR LOG
P O W E R
PORTS
S U P P L Y
CABINET
OR FANS
I S O L A T E T R O U B L E
REPLACEABLE MAINTENANCE
UNIT (SEE TEXT)
Figure 4-1.
4-10
USER-REPORTED
CAP ALARMED
P O W E R
S U P P L Y
P O W E R
A N D F A N S
REPLACE
POWER
SUPPLY
C P U / M E M O R Y
SERVICE CIRCUIT
F R O N T P L A N E / RECREATE USER-REPORTED TROUBLE
B A C K P L A N E
D I A G N O S T I C
T O
S T A T I O N
T E S T
SEQUENCE
Response to System 25 Trouble Report
DISCUSS THE TROUBLE
WITH SYSTEM USERS
READ (1) PERMANENT SYSTEM
A L A R M S , ( 2 ) T R A N S I E N T
S Y S T E M E R R O R S T A B L E ,
AND/OR (3) MOST RECENT
SYSTEM ERRORS IN TABLE
E R R O R L O G ;
A N D C H E C K
BOARDS AND POWER SUPPLY
L E D S T A T U S
ERROR LOG CONFIRMS
USER-REPORTED TROUBLE
NO ERROR LOG
RESULTS
S T A T I O N S T R U N K S O T H E R
( D E P E N D I N G
R U N
RUN
T R U N K O N P R O B L E M ,
TEST (S)
( S )
SEQUENCE
PROBLEM PERSISTS
T R A N S L A T I O N S
F R O M
PROBLEM PERSISTS
C I R C U I T
SEVERITY)
FIRST. WARM
S T A R T . I F
R E S T O R E
T A P E . I F
E S C A L A T E .