Specifications

800.6 POWEF? FAILURES
The loss of commercial power will shut the system
down unless external battery backup is provided.
This loss of power could come from tripped circuit
breakers, AC cords unplugged, or a fuse blown.
When a power failure occurs, working toward the
source, test for voltage. The power monitor LED will
remain lit when power is present. Since the proces-
sor or power failure will cause switchover to the
power failure telephone, the LED should be used to
determine whether it is a power failure or processor
failure. It can be seen through the bottom air vents
located on the front cover of the KSU.
800.9 KEY TELEPHONE FAILURES
The following statements should be considered
when isolating & categorizing key telephone failures:
Is the reported fault:
A. Present on one telephone only? Check wiring,
programming, telephone and KSU. Move tele-
phone to a good working position to eliminate
possible telephone failure.
5. Common to station numbers in pairs (l-2, 3-4,
5-6, etc.)? Check wiring polarity & KSU.
C. Common to all station numbers? Check pro-
gramming & KSU.
D. Associated with a key telephone that was re-
cently moved? Check ;wiring, programming,
telephone & KSU.
E. Associated with programming changes made
recently? (Ringing, CO line access, etc.)
Check for proper & accurate programming.
F. Occurring intermittently? Set up a test to dupli-
cate the problem.
G. Accompanying a software failure? Test the
feature operation, programming & KSU.
800.10 COlPBX LINE FAILURES
Problems with CO/PBX lines can be isolated and
categorized by the following statements:
Is the reported fault:
A. Present on one CO line only? Check the af-
fected line, wiring, plug connections & KSU.
B. Common to 2 or more CO lines? Check the
lines, wiring & KSU.
C. Associated with a key telephone? Check pro-
gramming, telephone & KSU.
D. Associated with signaling (DTMF, dial pulse)?
Check programming, CO line & KSU.
E. Associated with CO incoming ringing? Check
programming & KSU.
F. Occurring intermittently’? Set up test to dupli-
cate problem. Once the problem can be dupli-
sTARPLUS@ 616 FLEX
KEY TELEPHONE SYSTEM
cated, check programming, telephone, CO line
or KSU.
800.11 FEATURE OPERATION FAILURES
All operational features are controlled by software
and specific database assignments. Most features
are provided exclusively by software. However
some require supporting equipment. For this rea-
son, database assignments should be checked be-
fore corrective maintenance is performed. Also
check for proper usage by the customer, as feature
failures are often the fault of the user.
Features that
use supporting equipment could have faulty equip-
ment. This should be checked.
The following is a list of features that use additional
equipment:
@ Alarm - alarm system
0 Background Music - music source connections
l Battery Back-up - battery package & charger
l Loud Bell Control - external power source &
ringing device
l CO Line Control - ancillary equipment
l Power Failure Transfer - telephone wiring
l External Paging - amplifier, speaker & connec-
tions
800-2
ISSUE 1, JANUARY 1991