Mitel SX-200 DIGITAL Pabx Engineering Information Manual

Troubleshooting 
information Gathering and Problem Clarification 
2.08 Chart 2-5 provides a list of the information which may be 
necessary in order to adequately categorize a fault. All relevant 
information should be gathered and entered into a site fault record. If 
the fault has resulted in total or partial shutdown of the system, much 
of this data will be unobtainable or irrelevant. In ‘such cases, reference 
should be made to PROCEDURE 1 of this document. 
Page 2-14  

Troubleshooting 
tep 
CHART 2-5 
INFORMATION GATHERING AND CLARIFICATION 
Action 
-alk to attendants and station users. 
Check Maintenance / Alarm indications. 
Collect data concerning environmental conditions. 
Verify system programming. 
Make special checks for new installations, additions 
or modifications. Description / Follow-up 
Obtain the following information: 
*frequency of occurrence 
*intermittent or continuous nature 
*area of the system in which the fault 
occurs 
l time period during which...

Troubleshooting 
, - 
Step 
- 
6 
7 
- 
CHART 2-5 (Cont’d) 
INFORMATION GATHERING AND CLARIFICATION 
Action 
Make random miscellaneous checks. 
Check for minor alarm indications - these assist in 
isolating and categorizing faults 
Description / Follow-up 
l Ensure all circuit cards are properly 
seated. 
. Verify that the system fans are running. 
Check the cross-connect field for loose 
or damaged wiring, improperly seated 
connectors, or other signs of trouble. 
l Record relevant data and note the...

Problem Confirmation Troubleshooting 
2.09 
Many faults, particularly intermittent faults, “disappear” before 
the troubleshooter is able to make a positive trace. Wherever 
possible, attempts should be made to force the problem to recur, such 
that the effects may be observed and hence the cause determined. The 
information gathered up to this point may be used to set up conditions 
relating as closely as possible to those under which the fault originally 
manifested itself. 
Useful Aids 
2.10 The aids...

Troubleshooting 
TABLE 2-1 
TROUBLESHOOTING AIDS 
alarms. The primary source of troubleshooting information. 
8 A summary of all log messages is presented in Appendix A of 
this Section. 
Maintenance Terminal 
l Primary access to the maintenance log. 
e Allows testing of individual functional units, using directed 
diagnostics. 
0 Provides ability to query ALARM status, along with a variety 
of status reports. 
‘I-Segment Displays e Allows system power-up testing and operation to be 
monitored. 
Status...

Troubleshooting 
3. PERIPHERAL EQUIPMENT TROUBLESHOOTING PROCEDURES 
A. Line Cards 
3.01 The procedures detailed in the following paragraphs cover the 
isolation and correction of station line cards and SUPERSET@ 
line cards. Since these usually involve a degree of remoteness be- 
tween the individual sets and the SX-200m DIGITAL PABX, it is recom- 
mended that an additional person should assist the troubleshooter. 
ONS/Station Line Cards 
3.02 The 12 circuit ONS Line card (9109-010) is installed in the...

Troubleshooting 
- 
tep 
1 
erify the problem. * Go to step 2. 
2 isconnect the affected circuit(s) from the 
ross-connect field. o Go to step 3. 
3 ‘se a butt-set to check if the problem persists. (es: l Go to step 4. 
uo : 
l Problem lies outside the PEIX. Check for 
problems with cabling and the telephone 
set. 
4 og into the Maintenance Terminal. * Must enter username and password. 
5 se SHOW STATUS command on the affected bav. 0 Go to step 6. 
6 required, examine the maintenance log to obtain...

Troubleshooting 
CHART 3-l (Cont’d) 
ONS / 8-STATION LINE CARD TROUBLESHOOTING PROCEDURES 
tep Action Description / Follow-up Remarks 
15 
GO off-hook, and verify that dial tone is returned. Yes: l Go to step 21. 
No : l Go to step 16. 
16 Check if problem is intermittent. Yes: l Go to step 17. 
No: 
l Gotostep19. 
17 Ensure receivers are not busied out by Yes: l Return receivers to service, or refer to 
maintenance or due to malfunctions; (use SHOW DTMF receiver troubleshooting 
STATUS command). Busied...

Troubleshooting 
CHART 3-l (Cont’d) 
ONS / 8-STATION LINE CARD TROUBLESHOOTING PROCEDURES 
l Go to step 30. 
l Replace line card and retest. 
. If problem persists, reinstall the original 
line card, and go to step 32. 
Flash switchhook and check if the call is dropped. o If timing is too short, increase flash time 
via CDE. NOTE- Be aware of limitations 
of flashing while connected to a trunk. 
No : * Line circuit is functioning correctly - 
continue to monitor. 
* If there is a system CRITICAL ALARM...

Troubleshooting 
Notes to Chart 3-1: 
1. 
2. 
3. 
4. 
5. Refer to Section MITL9108-093-351-NA, RS-232 Maintenance Terminal for details of 
procedures. 
This is indicated by an error message returned to the terminal. 
Refer to Sections MITLS 108-093-210-NA, Customer Data 
MiTL9108-093-105-NA, Features Description for details of procedures. Entry and 
Refer to Section MITL9108-093-180-NA, Engineering Information for details on re- 
ceiver provisioning. 
90 V Ringing is labelled both on the backplane and...