Mitel SX-200 DIGITAL Pabx Engineering Information Manual

							Troubleshooting 
PSX E&M 
TRUNK CIRCUIT CROS;;ECPDNNECT TRANSMISSION/SIGNALLlNG 
EQUIPMENT 
1 1 
1 I 
I 0 
- 
NOTE: X = NORMALLY OPEN 
9 = NORMALLY CLOSED 
BUTT-SET 
KAOlOZRlEl 
Figure 3-l E&M Trunk Testing 
Page 3-26  
						

							Troubleshooting 
PBX DID/TIE 
TRUNK CIRCUIT 
1 1 
CROSS-CONNECT 
FIELD 
TIP 
RING 
:I 
TO 
CENTRqL 
OFFICE 
VOLTMETER 
KAOlOlROE 
Figure 3-2 DID/Loop/Tie Trunk Testing 
Page 3-27  
						

							Troubleshooting 
C. Other Peripheral Cards 
Universal Card 
3.08 The Universal card provides a general interface for SX-200@ 
Digital modules. The modules are: the E&M Trunk module, the 
DTMF Receiver module, the Console Interface module, and the Music 
On Hold (MOH) module. The Universal card plugs into any high power 
(upper) slot of any digital bay of the PABX. Chart 3-7 shows the steps 
involved in the troubleshooting of this card type. 
Further information on the Universal card may be found in Sections 
MITL9108-093-200-NA, Shipping, Receiving and Installation and 
MITL9108-093-125-NA, Circuit Card Descriptions. 
Page 3-28  
						

							P 
Troubleshooting 
CHART 3-7 
UNIVERSAL CARD TROUBLESHOOTING PROCEDURES 
tep Action Description / Follow-up Remarks 
1 Identify the affected Universal card. l Go to step 2. 
2 Check maintenance log for indications of problems Yes: l Refer to the troubleshooting procedures 
with modules, or the Attendant console. Any such for the appropriate device. 
indications? No : * Go to step 3. 
3 Check which module types are installed on the 8 Go to step 4. 
card; use the SHOW CONFIG command. 
4 Check cabling to the Universal card, and all of the Yes: 0 Correct faulty cabling. If problem persists, see Note 
modules installed on it. Any cabling problems? go to step 5. 2 
No : 0 Go to step 6. 
5 Check programming for the Universal card and all Yes: l Correct faulty programming. If problem see Note 
of the modules installed on it. Any programming persists, go to step 6. 3 
errors? No : l Go to step 6. 
6 If there are DTMF Receiver modules on the card, Pass: * Go to step 7. see Note 
test them. Otherwise, go to step 7. Fail: 8 Replace faulty module and retest. If 1 
problem persists, go to step 7. 
7 If there are E & M Trunk modules on the card, test Pass: e Go to step 8. see Note 
them. Otherwise, go to step 8. Fail: l Replace faulty module and retest. If 1 
problem persists, go to step 8. 
8 If there are Console modules on the card, test Pass: 0 Go to step 9. see Note 
them. Otherwise, go to step 9. Fail: l Replace faulty module and retest. If 1 
problem persists, go to step 9. 
9 If there is a Music On Hold (MOH) module on the Yes: l Go to step 10. 
card, remove it. Does problem persist? No : o Problem fixed. Replace faulty module. 
10 Replace the faulty Universal card, and check if Yes: l Possible problem with Main Control card. 
problem persists. Go to step 11. 
No : 0 Problem fixed. 
STEP 11 SHOULD BE DONE DURING PERIODS OF LOW OR NO TRAFFIC, AS IT WILL HAVE AN ADVERSE 
EFFECT ON SYSTEM PERFORMANCE. BEFORE PROCEEDING, ATTEMPT A SYSTEM RESET, USING THE 
“SYSTEM RESET” PUSHBUTTON ON THE MAIN CONTROL CARD FRONT PANEL. IF ANALOG BAYS ARE 
PRESENT, THESE MAY BE RESET USING THE “MASTER RESET” PUSHBUTTON ON THE SCANNER CARD. 
CHECK IF THE RESET SOLVES THE PROBLEM. DO NOT PROCEED TO STEP 11 UNLESS SPECIFICALLY 
DIRECTED TO IT FROM A PREVIOUS STEP. 
11 Power down the system; replace the Main Control Yes: a Refer problem to Mite1 field service. 
card. Does the fault persist? No : e Problem fixed. 1 
1 
I 
Notes: 1. Refer to Section MITL9108-093-351~NA, RS-232 Maintenance Terminal for details of 
procedures. 
2. Refer to Section MITL9108-093-200-NA, Shipping, Receiving and Installation for details 
of cabling. 
3. Refer to Sections MITL9108-093-105-NA, 
Features Description, and 
MITLS 108-093-2 1 0-NA, Customer Data Entry for details. 
Page 3-29  
						

							Troubleshooting 
DTMF Receiver ModJle (9109-016) 
3.09 The DTMF Receiver module is installed on the Universal card in 
the digital bays of the SX-ZOO@ DIGITAL PABX system. The 
module provides four DTMF Receiver circuits. Also provided are two 
relay circuits. The troubleshooting procedures for DTMF Receivers are 
provided in Chart 3-8. Further information concerning the characteris- 
tics, parameters and operation of the moduleis contained in Section 
MITLS 108-093-l 2%NA. 
Page 3-30  
						

							CHART 3-8 
DTMF RECEIVER MODULE TROUBLESHOOTING PROCEDURES 
‘tep Action Description I Follow-up Remarks 
1 Check the status of the suspect circuit. l Use the SHOW STATUS command, and see Note 
check for abnormal conditions. 1 
2 Check if problem is with DTMF circuit or a relay DTMF: l Go to step 3. 
circuit. Relay: l Go to step 17. 
l If unknown, go to step 3. 
3 Perform a directed test on the suspect circuit(s). l First busy out the receiver, then use 
the TEST command. If possible, avoid 
busying a circuit involved in a call. 
l Go to step 4. see Note 
1 
4 Check for test failure. Fail: 8 Reseat the card and the module, then 
rerun the test. 
 
0 If failure persists, go to step 5. 
Pass: l Go to step 14. 
5 Check backplane continuity from Universal card to Yes: * Correct as required; if problem persists, 
Main Control card. Problems? go to step 6. 
6 Check maintenance log for indications of problems Yes: e Ftefer to the applicable troubleshooting see Note 
with the Universal card, other modules on the procedures. 1 
Universal card, or the Main Control card. Any such No : * Go to step 7. 
indications? 
7 Use SHOW CONFIG command on the card slot to Yes: l Go to step 6. 
identify any other modules on the Universal card. No : 
* Gotostepll. 
Other modules? 
8 Perform directed tests on any other receiver Yes: 0 Go to step 9. 
modules, E & M trunk modules, and the console (if No : 0 Gotostepll. 
there is a console module installed). Do these fail 
as well? 
9 Is one of the other modules a Music On Hold Yes: l Go to step 10. see Note 
(MOH) module? No : 0 Gotostepll. 2 
IO Remove the MOH module, and check if problem Yes: l Gotostepll. 
persists. Does problem persist? No : l Problem fixed. Replace faulty MOH 
module. 
Page 3-3.1  
						

							Troubleshooting 
CHART 3-8 (Cont’d) 
DTMF RECEIVER MODULE TROUBLESHOOTING PROCEDURES 
tep Action Description / Follow-up Remarks 
11 Replace suspect DTMF Receiver module and test. Pass: l Problem fixed. 
Fail: Q Go to step 12. 
12 Test the signal processor; use the TEST DEVICE 
TYPE DSP command. Pass: o Go to step 13. 
Fail: * Problem with Signal Processor; go to 
step 22. 
13 Replace Universal card and retest. Pass: * Problem fixed. 
Fail: e Possible problem with Main Control card. 
* Go to step 22. 
14 BUSY out all of the DTMF Receivers in the system, * IMPORTANT : THIS STEP MUST BE DONE see Note 
except the suspect receiver. DURING A PERIOD OF LOW OR NO 1 
TRAFFIC, AS IT WILL ADVERSLY AFFECT 
SYSTE@PERFORMANCE. 
* Go to step 15. 
15 Initiate a station-to-station call. Can the call be Yes: 8 Record details; return all circuits to 
completed? service. Use SHOW STATUS and TEST 
CONTINUOUS commands, and periodically 
refer to the maintenance log to observe 
the progress of the circuit. 
No: eGotostep16. 
16 Replace the suspect module. * If problem persists, indicates possible 
problem with Main Control card. Go to 
step 22. 
17 Ensure relay is properly programmed in CDE Forms * Correct programming as required. see Note 
18 and 19. 0 If problem persists, go to step ‘18. 3 
18 Disconnect relay from the external equipment at a Go to step 19. 
the MDF. 
19 Ensure external equipment is functional - short out * If external equipment is activated (i.e., see Fig 
at the MDF. night bell rings) go to step 20. If not, 3-3 
problem with external equipment. 
20 Connect ohmmeter across relay leads at the MDF. 0 An open circuit should be read. If not, see Fig 
verify connection at the backplane, and 3-3 
reseat the module. 
@ If this persists, replace the module. 
8 Otherwise, go to step 21. 
Page 3-32  
						

							Troubleshooting 
CHART 3-8 (Cdnt’d) 
DTMF RECEIVER MODULE TROUBLESHOOTING PROCEDURES 
I I 
Step Action Description I Follow-up Remarks 
21 From any station, dial the access code for the 
external equipment (i.e., the Night Bell access 
code). 
l If the meter reads a short circuit, the 
relay is functioning properly; if not, 
replace the suspect module. 
l If problem persists, possible Main Control 
problem - go to step 22. 
r 
T STEP 22 SHOULD BE DONE DURING PERIODS OF LOW OR NO TRAFFIC, AS IT WILL HAVE AN ADVERSE 
EFFECT ON SYSTEM PERFORMANCE. BEFORE PROCEEDING, ATTEMPT A SYSTEM RESET, USING THE 
“SYSTEM RESET” PUSHBUTTON ON THE MAIN CONTROL CARD FRONT PANEL. IF ANALOG BAYS ARE 
PRESENT, THESE MAY BE RESET USING THE “MASTER RESET” PUSHBUTTON ON THE SCANNER CARD. 
CHECK IF THE RESET SOLVES THE PROBLEM. DO NOT PROCEED TO STEP 22 UNLESS SPECIFICALLY 
i DIRECTED TO IT FROM A PREVIOUS STEP. 
I I 
22 Power down the system; replace the Main Control Yes: l Refer problem to Mite1 field service. 
card. Does the fault persist? No : l Problem fixed. 
Notes: 1. Refer to Section MITL9108-093-351-NA, RS-232 Maintenance Terminal for details of 
procedures. 
2. This step is required, as it is not possible to run diagnostics on the MOH module due 
to its permanent “on-line” nature. 
3. Refer to Sections MITL9108-093-105-NA and MITL9108-093-210-NA for information 
on programming. 
Page 3-33  
						

							Troubleshooting 
Console interface Module 
3.10 The Console interface module is installed on the Universal card 
in the digital bays of the SX-200’ DIGITAL PABX system. The 
module provides an interface to the system for the Attendant Console. 
For Console Module troubleshooting procedures refer to the part on 
the Attendant Console. 
Further information on the Console Interface module may be found in 
Section MITL9108-093-200-NA, Shipping, Receiving and Installation. 
Music On Hold (MOH) / Pager Module 
3.11 The Music Qn Hold (MOH) / Pager module is installed on the 
Universal card in the digital bays of the SX-200@ DIGITAL PABX 
system. The module provides a music source input, a paging output, 
and a pair of relay contacts to control an external paging amplifier. The 
troubleshooting procedures for this module type are provided in Chart 
3-9. Further information on the MOH/ Pager module may be found in 
Section MITL9108-093-200-NA, Shipping, Receiving and Installation. 
B 
Page 3-34  
						

							Troubleshooting 
;tep 
1 Check the status of the suspect circuit 
2 Check maintenance log for indications of problems 
with other modules, or the Universal card. Any 
such indications? 
3 Check if problem is with Music On Hold or Pager. 
4 Disconnect the music source from the MOH 
module at the MDF. 
5 Connect butt-set to music source pair at the MDF 
and go off-hook. Is music heard? 
6 Reconnect music source to MOH at the MDF. 
7 
8 
9 
10 
11 
12 Access MOH from any station (put on hold) - is (es: * MOH portion is functioning correctly. 
music heard? Uo: *Gotostep12. 
Disconnect the PA system from the Pager at the 
MDF. 
Connect butt-set to the PA system pair at the 
MDF, go off-hook and speak. Is PA system 
accessed? 
Connect butt-set to the pager pair at the MDF. 
Access the pager from any station with the 
appropriate pager access in its COS, and speak. Is 
this heard on the butt-set? 
Check CDE programming of the module. Check fes: l Correct programming errors; if problem 
Forms 01, 18, 19 and station/trunk COS. Any persists, go to step 13. 
programming problems? No: 
l Gotostep13. 
CHART 3-9 
MUSIC ON HOLD / PAGER MODULE TROUBLESHOOTING PROCEDURES 
Description / Follow-up lemarks 
l Use the SHOW STATUS command, and ee Note 
check For abnormal conditions. 1 
(es: 0 Refer to the appropriate troubleshooting 
procedures. 
Uo : l Go to step 3. 
l If MOH, go to step 4. 
l If Pager, go to step 6. 
l If unknown, treat as problem with both. 
* Go to step 5. 
(es: l Go to step 6. 
uo : l Problem with music source or cabling. 
l Go to step 7. see Fig 
3-3 
l Go to step 9. 
fes: l Go to step IO. 
uo : l Problem with PA system or cabling. 
e Go to step 11. 
fes: l Pager portion is functioning correctly. 
No: eGotostep12. see Fig 
3-3 
;ee Notr 
3 
Page 3-35