Mitel SX-200 DIGITAL Pabx Engineering Information Manual

. . 
General Maintenance Information 
TABLE 5-2 
THE MAINTENANCE DEVICE WORK AREA 
The status of the card; one of: 
ther unplugged, or not installed 
maintenance 
- programme 
but not installed 
- not programmed in CDE 
- suspect - failed one diagnostic test 
- busied-out from the maintenance terminal, the console, the test 
line, or the manual switches (applies to analog trunks only) 
lated to this 
circuit 
Indicates for each circuit on the card, if power-up diagnostics are enabled. 
Page 5-4/4  

Genera! Maintenance Information 
6. DIAGNOSTIC TESTS 
General 
6.01 For each physical device in the SX-200@ DIGITAL PABX there is 
a special set of diagnostic tests specifically designed to test 
the device as thoroughly as possible. If faults are detected, broader 
ranges of tests may be run in an attempt to isolate the fault to the 
board level, and to ensure that isolated faults are not merely side 
effects of other problems. The diagnostics are divided into four dif- 
ferent functional groups. This...

General Maintenance Information 
TABLE 6-2 
DIAGNOSTIC COVERAGE 
Device Type Power-up 
ONS Line (digital) 
ye= 
COV Line (digital) 
ye= 
OPS Line (digital) 
ye= Background 
ye= 
yes 
ye= Directed 
ye= 
ye= 
ye= PROM 
rLS/GS Trunk (digital) 
I ye= 
I ye= 
I ye= 
I I 
DID Trunk (digital) 
E&M Trunk Module (digital) 
DTMF Receiver Module 
Console Module yes 
ye= 
ye= 
ye= 
1 Music/Pager Module see Note 2 
[ System Printer 
I ye= 
I ye= 
I ye= 
I I 
Bav Control Card 
/ Analog Bay Control Cards 
I- ye= 
I 
I...

General Maintenance Information 
6.03 The following tests are performed on the Main Control Card: 
e Processor Viability Test 
l PROM Checksum Test 
e 
Dynamic RAM Chip Select independence Test 
l Dynamic RAM Data Bit independence Test 
0 
Memory Address Line Independence Test 
0 
Memory Address Space Independence Test 
l DMA Controller Test. 
Bay Control Card Tests 
6.04 
Like the Main Control card, it is not possible to thoroughly test 
the Bay Control card in the on-line environment. Therefore, 
most...

General Maintenance Information ~ 
6.08 A/D Conversion Reference Test. This test verifies the opera- 
tion of the Analog-to-Digital converter by checking the level on 
the PCM Encoder/Decoder (CODEC) reference source. All digital lines 
and trunks undergo this test. 
6.09 inject Codec Test. This test verifies the operation of the PCM 
paths from the DX Matrix on the Main Control Card to the 
CODEC on the peripheral card, and back again; this includes the DX 
Data memory, and the peripheral backplane. The...

General Maintenance Information 
low state and ground state. If the test fails, the fault is isolated to the 
junctor under test. 
6.17 Junctor Digital Codec Loopback Test. This test, performed on 
analog bays, if present, is similar to the Digital Codec Loopback 
Test; it verifies operation of the PCM paths from the Main Controller 
Card to the Peripheral Control Card, to the CODEC on the DIC Card, 
and back again, using a tone transmitted from the tone generator. If 
the test fails, it is not possible...

General Maintenance Information 
TABLE 6-6 
CONSOLE DIAGNOSTIC SEQUENCE 
Diagnostic 
State Test Name Circuit State 
if Test Fails 
1 state 1 1 console. test 1 faulty, unisolated 
I 
TABLE 6-7 
ANALOG VOICE PATH (JUNCTOR) DIAGNOSTIC SEQUENCE 
Diagnostic 
State Test Name Circuit State 
if Test Fails 
state 1 junctor force hi/low faulty, unisolated 
state 2 junctor digital CODE6 faulty, unisolated 
state 3 junctor analog CODEC faulty, isolated 
TABLE 6-8 
COV LINE/E&M TRUNK DIAGNOSTIC SEQUENCE 
Diagnostic...

General Maintenance information 
7. TEST LINE 
General 
7.01 The test line interface is designed to provide the maintenance 
person with a portable, inexpensive and readily available tool 
for diagnosing system failures and performing maintenance functions. 
A powerful subset of the maintenance functionality available via the 
maintenance terminal is available at the test line interface. In addition, 
the maintenance person can place calls without having a permanently 
wired extension on the premises....

General Maintenance Information 
TABLE 7-l 
TEST LINE COMMAND CODES 
COMMAND CODES 
Numeric 1 Alphabetic Description 
I 26 
I BO 
1 Busy-Out device 
I 
77 RS 
83 TD 
85 TJ Return device to Service 
Test Device 
Test Junctor 
I 25 I BJ I Busy-Out Junctor I 
I 
75 I RJ Return Junctor to service I 
Test Line Indicator LEDs 
7.05 The test line software uses the dual 7-segment display status 
indicators on the Main Control card as status indicators. When 
the user enters the test line access code on the test...

General Maintenance Information 
Status Code 
PA 
E5 
, TABLE 7-2 
TEST LINE STATUS INDICATOR CODES 
Meaning 
The attempted operation was successful 
(pass). 
The attempted operation was unsuccessful 
(fail).* 
System is waiting for command input. 
Test was inconclusive. 
Fatal disk error; refer to Section 
MITL9108-093-350-NA, Troubleshooting. 
Invalid command or device location entered; 
only those commands in Table 7-l are 
acceptable. 
Diskette information has been loaded into 
RAM; insert new...