Preface; Entry Into An Sx-5 Cablnr; General; Levels Of Entry - Mitel SX-5 Manual

SECTION Mln9103-098-350-NA
2 PREFACE
Level
1 Emry
201
Thts sectlon prov~des
the
lllforrnation re-
quired by a repair person to locate and
repar any fault which may occur with an SX-5
Comrnunicabons System Description of the SX-
5 within this section, is contained to the details
required to carry out the troubleshooting pro-
cedures detailed in MAPs 350- 10 1 through 1 17.
The following documents
may be
used to provide
additional information where necessary
M m 9 1 03-098- 1 OO-NA. General De-
scription
M m 9 103-098- 105-NA. Features and
Services
M m 9 103-098- 150-NA, Ordering Infor-
mation
M m 9 103-098-200-(VA, Shipping, Re-
ceiving and Installation Procedures
M m 9 103-098-205-NA. Programming
n d Installation F o m
202 M M ~
fault repair requires modulo re-
placement ( a g . TNnk Moduld a skilled
t w h i c i a n must
be
employed. Undw no cir-
cumstances should the repair or replacement
of faulty PCB components be carried o u t
3 . ENTRY INTO AN SX-5 CABINET
General
3.a h e cabinet of an SX-5 should be locked
when installation is complete and should
remain locked throughout n o d use Only those
persons who possess the correct door key may
then gam access to the interior of the cabinet
Levels of
Emry
t02
There are two levds of entry into an SX-5
cabinet Level 1 Entry allows restricted
system access. Level 2
Entry
allows unrestricted
system access.
Caution: ACTlONS WHICH REQUIRE
W R 2
ENTRY T O THE SYSTEM MUST ONLY
BE PERFORMED BY A SKILLED
TECHNICIAN
3 . 0 3 Level
1
Entry is accomplished by unlocking
and opening the access door of the SX-5,
which then allows access to:
System Switches (SW 1, SW2)
Reset Switch
AlarmLanp
Trunk Connectors
Terminal Strip
Extension LED'S
Reserve Power Connector
AC Power Cord
AC Supply Fuse
Wrist Ground Strap
Power Supply
W r
3.04
Level 2 Entry is accomplished by opening
the access door, removing the two cover-
retaining screws. located at the top and bottom
of the internal blanking plate (refer to F i g 3-11.
and lifting
the
hinged cover. Level
2 Entry
allows
access to:
All items listed in Level 1 Entry
Trunk Module
Memory Module
I
Subscriber tine Interface Circuits (StlCs)
PcBtoPCB Jumper
Main Card
Power Supply Card
Location and Function
A01
Maintenance LED'S provide a n immediate
status indication of circuit divisions within
the SX-5. Table
4-
1 detaiis the location and fun-
ction of these maintenance LED'S.
5 . TROUBLESHOOTING PROCEDURES
General
5.01
The troubleshooting procedures given in
this section are in the form of MAP'S. An
introduction to the use of MAPs is given in Paras
5.04. to 5.07. Having located a fault the
ap-
propriate repair action (given in the MAP) should