TABLE 5-6
SYSTEM FAULTS
Fault
Reported As
System completely dead
-
no power
Step 1 Step 2 Step 3
Check power at commercial Check that the system Go to Appendix F,
AC outlet. power switches are on. paragraph
F1.03
STOP
Shelf 2 dead
-
no power
Calls cannot be made
within the system.
Power on.
Check Shelf 2 power
MAP350-603.
Perform Common Control
Test,
MAP350-701.
STOP
Meaningless diagnostics
or system resets
Error E012 with
an equipment number
greater than 160
Perform Common Control
Test,
MAP350-701.
Intermittent shelf cables.
STOP
Error E008 Change tone control card
or if the problem is
intermittent, change shelf.
STOP
Double connections Replace Scanner card. STOP
Lockout shown on console Replace Scanner card. STOP
while station conversing
Shelf power will not
Check
P301.
Replace Interconnect STOP
come up card.
If only on Trunk calls Replace Console
check for a tip/ring reversal
Calls with no one there
(at console)
Replace Console. STOP
Low console volume
Station Conference
oscillates
Replace Console.
Trunk limitations.
STOP
STOP
System powered-down; RAM battery dead. STOP
requires new programming
Console goes to Night 1
-
Bad handset.
STOP
no reason
-m----m-~
l/8
A ringing fuse blows
_-~-
~.
_~
Short on external ringing
leads.
STOP
Extension cannot page
Check programming.
Check extension COS.
Check access codes.
Go to
MAP350-704
STOP
Night bells don’t ring
Music on Hold is not
audible
Check user
48
Vdc and
Check trunk programming. Go to
MAP350-705
90
Vat
fuses.
STOP
Check input at
cross-
Change Tone Control
connect field by clipping a
card.
butt-in on incoming pair
STOP
or by dialing 32 on
thumbwheel on Tone Control
card and listening on test
line.
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