Level 2 Entry; Maintenance Led's; Troubleshooting Procedures; Precautions - Mitel SX-5 Manual

SECTION MITL9103-098-350-NA
TABLE
4-1
MAINTENANCE LED'S
t
The Alarm Led flashes for 8 seconds after Power-up or System Reset, this does not indicate
a Memory Module Fault
LED
ALARM
(1
on
EXTENSION
(6 OF)
POWER
SUPPLY
(4
on
WATCHDOG
( 1 OF)
be carried out and the system returned t o normal (dl Handle modules, as far as practical, by the
operation
edges. Avoid contact with exposed elec-
trical connections
Precautions
LOCATION
Level 1 Entry
immediately below the
Reset Switch
Level 1 Entry
adjacent t o the terminal
strip.
Level
1
Entry
below the terminal
strip.
Level 2 Entry,
in the top left-hand
comer of the Main
Card
Test Equipment and Tools
5.02 When troubleshooting the SX-5 certain
5.03 A minimum o f equipment is required t o
precautions must be observed, particularly
troubleshoot an SX-5, which is as follows:
when handling modules or using test equipment
t o measure voltages The precautions are as fol-
A multimeter, capable o f
0-1
Kohm and
lows: 0- 120 V measurement
A Phillips screwdriver.
STATUS
ON
FLASHING+
ON
OFF
ALL ON
1 OR
MORE OFF
ON
FLASHING
(a) The wrist ground Strap, located inside the Environmental Conditions
door of the SX-5, must be worn when
making either a Level 1 or a Level 2
WY
5.04 When a fault occurs, and prior
to
t o the system o r when handling modules troubleshooting procedures being carried
out, the following environmental conditions
(b) Conductive packages should be grounded
should be investigated as possible causes o f the
prior t o removal and replacement o f con-
fault
MEANING
Memory Module OK
Memory Module fault
Line circuit seized
Llne circuit free
Power supplies correct
Power supply fault
System processor OK
System processor fault
tents Suspected faulty cards should be
placed in conductive packages t o prevent
(a)
Physical Environment
-
Do adequate ven-
further damage.
tilation, cooling and low humidity conditions
prevail?
(c) When removing or replacing modules from (b) Electrical Environment
-
Do potential sour-
the SX-5 ensure that power is first ces o f radio frequency interference (RFI)
switched off, but maintain good ground exist which may affect the operation o f
connections t o the equipment the SX-5, e.9 the close proximity o f radio
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