Mitel SX-200 DIGITAL Pabx Engineering Information Manual

							Troubleshooting 
SUPERSET qTM Set 
3.14 The SUPERSET qTM set is a microprocessor-controlled tele- 
phone set which interconnects with the SX-200@ DIGITAL PABX 
system. It provides visual PABX feature prompting by means of a 
Liquid Crystal Display (LCD) panel, and permits up to 15 line appear- 
ances. The SUPERSET qTM set derives its power from the system, and 
all voice and signal communication between the set and the system is 
achieved via the normal Tip and Ring leads. No special cabling is 
required for the SUPERSET qTM set, nor is any AC supply required. The 
SUPERSET qTM set is connected to the system via one of two card 
types. The COV line card connects the SUPERSET qTM set to the system 
through the digital bays, while the SUPERSET@ Line card connects the 
set through analog bays, if present. Chart 3-12 shows the steps in- 
volved in the troubleshooting of the SUPERSET qTM set. The line cards 
described above have their own related troubleshooting procedures. 
Page 3-46  
						

							Troubleshooting 
CHART 3-12 
SUPERSET qTM SET TROUBLESHOOTING PROCEDURES 
tep Action Description I Follow-up Remarks 
1 Identify the extension number of the suspect 
SUPERSET@‘set. l Go to step 2. 
2 Obtain a SUPERSET error summary from the l Use the SHOW SSET-ERRORS command see Note 
maintenance / CDE terminal. and check for abnormal conditions. 1 
l If errors are indicated, go to step 6; 
otherwise;go to step 3. 
3 Check maintenance log for indications of problems Yes: 
with the COV card / SUPERSET”’ card. Any * Refer to the troubleshooting procedures 
for the COV or SUPERSET& Line card. 
indication? No : 
0 Go to step 4. 
4 Check if problem exists with other sets from other Yes: @ Refer to the troubleshooting procedures 
line cards. for the COV or SUPERSET Line card. 
No : l Go to step 5. 
5 Check if problem exists with other sets from the Yes: 
l Refer to the troubleshooting procedures 
same line card. for the COW or SUPERSET@ Line card. 
No : * Go to step 8. 
6 Check if errors occurred on more than one card. Yes: 
* Refer to the troubleshooting procedures 
for the COV or SUPERSET@ Line card. 
No : l Go to step 7. 
7 Check if errors occurred in more than one circuit. Yes: * Refer to the troubleshooting procedures 
for the COV or SUPERSET@ Line card. 
No : l Go to step 8. 
8 Perform SUPERSET qTM Loopback Test from the 
suspect SUPERSETBset. Pass: 0 Go to step 10. see Note 
Fail: 0 Go to step 9. 2 
9 Replace the suspect SUPERSET@set, and rerun the Pass: 0 Problem fixed. 
Loopback test from the new set. Fail: 
o Go to step 10. 
10, Check that the voltage across the Tip and Ring Yes: * Go to step 11. 
leads at the SUPERSET qTM (with the set No : 
l Replace the set, and remeasure. If still 
connected, and on-hook) is between 40 VDC and out of range, go to step 11. 
48 VDC. 
11 Check cabling. l If no cabling problems, go to step 12. 
Page 3-47  
						

							Troubleshooting 
CHART 3-12 (Cont’d) 
SUPERSET qTM SET TROUBLESHOOTING PROCEDURES 
:ep Action 
2 Check if the resistance of the loop exceeds 200 
ohms. 
13 Check if display reads “No Communication” or 
“Consecutive Errors”. 
Description / Follow-up Remarks 
No: l Gotostep13. 
Yes: l Check for loose connection and 
remeasure. If still out of range, refer 
to the troubleshootinggrocedures for 
the COV or SUPERSET Line card. 
Yes: l If set has not bean replaced yet, replace 
it. Otherwise, refer to the troubleshoo$ng 
procedures for the COV or SUPERSET 
Line card. 
No : l Go to step 14. 
14 Take the receiver off-hook and check if dial tone is Yes: 0 Go to step 17. 
returned. No: 
l Gotostep15. 
I5 Check if side tone is present. Yes: l Go to step 16. 
No : l Refer to troubleshootin procedures for 
the COV or SUPERSET Line card. 
I6 Check if calls may be completed without dial tone. Yes: l Problem with Main Control card - go to 
step 18. 
No : l Refer to troubleshootin procedures for 
the COV or SUPERSET Line card. 
17 If problem persists, check the Class Of Service l If there are programming errors, correct 
see Note 
options of the set. them; otherwise refer problem to Mite1 
3 
field service. 
STEP 18 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 
I “SYSTEM RESET” PUSHBUTTON ON THE MAIN CONTROL CARD FRONT PANEL. IF ANALOG BAYS ARE 
.A 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 18 UNLESS SPECIFICALLY 
DIRECTED TO IT FROM A PREVIOUS STEP. 
18 Check if line card is of type 9109-020. Yes: l Go to step 23. 
No: 
l Gotostep19. 
19 Power down the affected bay via the power switch l Go to step 20. 
on the maintenance panel/top panel. 
20 Replace the Digital Interface card; power up the Yes: l Power down shelf; go to step 21. 
bay. Does fault persist? No : l Problem fixed. 
Page 3-48  
						

							Troubleshooting 
CHART 3-12 (Cont’d) 
SUPERSET qTM SET TROUBLESHOOTING PROCEDURES 
Action Description / Follow-up 
Replace the Peripheral Control card; power up the Yes: 
l Power down shelf; go to step 22. 
bay. Does fault persist? No : l Problem fixed. 
Replace the Scanner card; power up the bay. Does Yes: l Possible problem with Main Control card; 
the fault persist? go to step 23. 
No : 
l Problem fixed. 
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. Remarks 
1 
Notes: 1. Refer to Section MITL9108-093-351-NA, RS-232 Maintenance Terminal for details of 
procedures. 
2. SUPERSET qTM Loopback Test is System Feature # 26. Refer to CDE Form 02 - Feature 
Access Codes for the actual access code. If there is no dial tone, the test fails. 
3. Refer to Section MITL9108-093-105-NA, Features Description for details of features 
and options. 
Page 3-49  
						

							Troubleshooting 
SUPERSET 3TM Set 
3.15 The SUPERSET 3TM set is a microprocessor-controlled tele- 
phone set which interconnects with the SX-200@ DIGITAL PABX 
system. The set permits up to 12 line appearances The SUPERSET 3TM 
set derives its power from the system, and all voice and signal com- 
munication between the set and the system is achieved via the normal 
Tip and Ring leads. No special cabling is required for the SUPERSET 3TM 
set, nor is any AC supply required. The SUPERSET 3TM set is connected 
to the system via one of two card types The COV line card connects 
the SUPERSET 3TM set to the system through the digital bays, while the 
SUPERSET Line card connects the set through analog bays, if present. 
Chart 3-13 shows the steps involved in the troubleshooting of the 
SUPERSET 3TM set. The line cards described above have their own 
related troubleshooting procedures. 
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							Troubleshooting 
CHART 3-13 
SUPERSET 3TM SET TROUBLESHOOTING PROCEDURES 
tw 
Action Description / Follow-up Remarks 
1 Identify the extension number of the suspect l Go to step 2. 
SUPERSET@ set. 
2 Obtain a SUPERSET@ error summary from the * Use the SHOW SSET-ERRORS command see Note 
maintenance / CDE terminal. and check for abnormal conditions. 1 
l If errors are indicated, go to step 6; 
otherwise, go to step 3. 
3 Check maintenance log for indigtions of problems Yes: l Refer to the troubleshooting procedures 
with the COV card / SUPERSET card. Any for the COV or SUPERSET@ Line card. 
indication? No : l Go to step 4. 
4 Check if problem exists with other sets from other Yes: e Refer to the troubleshooting procedures 
line cards. for the COV or SUPERSETa Line card. 
No : * Go to step 5. 
5 Check if problem exists with other sets from the Yes: * Refer to the troubleshooting procedures 
same line card. for the COV or SUPERSET@ Line card. 
No : * Go to step 8. 
6 Check if errors occurred on more than one card. Yes: 0 Refer to the troubleshooting procedures 
for the COV or SUPERSET@ Line card. 
No : l Go to step 7. 
7 Check if errors occurred in more than one circuit. Yes: e Refer to the troubleshooting procedures 
for the COV or SUPERSET@ Line card. 
No : 8 Go to step 8. . 
8 Check that the voltage across the Tip and Ring Yes: 0 Go to step 9. 
leads at the SUPERSET 3TM set (with the set No : * Replace the set, and remeasure. If still 
connected, and on-hook) is between 40 VDC and out of range, go to step 9. 
48 VDC. 
9 Check cabling. l If no cabling problems, go to step 10. 
10 Check if the resistance of the loop exceeds 200 No: *Gotostepll. 
ohms. Yes: l Check for loose connection and 
remeasure. If still out of 
range, refer to the troubleshooting 
procedures for the COV 
or SUPERSET@ Line card. 
Page 341  
						

							Troubleshooting 
CHART 3-13 (Cont’d) 
SUPERSET 3TM SET TROUBLESHOOTING PROCEDURES 
tep 
Action Description / Follow-up Remarks 
11 Check if all three line appearance LEDs are Yes: 
l If set has not been replaced yet, replace 
permanently on. it. Otherwise, refer to the troubleshoogng 
procedures for the COV or SUPERSET 
Line card. 
No: eGotostep12. 
12 Take the receiver off-hook and check if dial tone is Yes: * Go to step 15. 
returned. No: eGotostepl3. 
13 Check if side tone is present. Yes: e Go to step 14. 
No : Q Refer to troubleshooting procedures for 
the COV or SUPERSET Line card. 
14 Check if calls may be completed without dial tone. Yes: 5 Problem with Main Control card - go to 
step 16. 
No : * Refer to troubleshooting procedures for 
the COV or SUPERSET Line card. 
15 If problem persists, check the Class Of Service 8 If there are programming errors, correct see Note 
options of the set. them; otherwise refer problem to Mite1 2 
field service. 
. STEP 16 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 
G THE “MASTER RESET“ PUSHBUTTON ON THE SCANNER CARD. 
BLEM. DO NOT PROCEED TO STEP 16 UNLESS SPECIFICALLY 
Q Go to step 16. 
Yes: 0 Power down shelf; go to step 19.. 
* Problem fixed. 
bay. Does fault persist? 
the fault persist? 
l Power down shelf; go to step 26. 
8 Problem fixed. 
a Possible problem with Main Control card; 
go to step 21. 
* Problem fixed. 
l Refer problem to Mite1 field service. 
Notes: 1. Refer to Section bllTL9108-093-351~NA, RS-232 Maintenance Terminal for details of 
procedures. 
2. Refer to Section MlTL9108-093-lO+NA, Features Description for details of features 
and options. 
Page 3-52/52  
						

							Troubleshooting 
4. SUBSYSTEM TROUBLESHOOTING PROCEDURES 
MAIN CONTROL CARD 
4.01 The following paragraphs outline the troubleshooting proce- 
dures for the Main Control Card (Part No. 9109-003). 
Configuration 
4.02 The Main Control card consists of the following: 
Name Part No. 
0 Main Control card 9109-003 
l DX Module 
8 
DRAM module 
0 
Decryption module 
0 
EPROM 
Main Control Card Power-Up Tests 
4.03 The Main Control card power-up tests are run automatically 
upon operation of the SYSTEM RESET pushbutton located on 
the Main Control card front panel. The test results are indicated in 
code form on the Main Control card’s T-segment displays, also located 
on the Main Control card front panel. 
Note: The Main Control card T-segment displays are also used for 
the troubleshooting of the Floppy Disk Subsystem - refer to 
the Floppy Disk Subsystem troubleshooting procedures. 
First-Step Checks 
4.04 
Prior to replacing cards as directed by the Main Control card 
troubleshooting procedures, carry out the following checks: 
(a) Reseat the suspect card. 
(b) Check for bent pins at the backplane or module connector, 
where applicable. 
If the above does not clear the fault, proceed.to replace the card. 
Power-Up Sequence 
4.05 The Main Control card power-up sequence is outlined in detail 
in Section MITL9108-093-353-NA, General Maintenance Infor- 
mation. See Emergency Troubleshooting Procedures (Chart 2-2) for 
Main Control card procedures. 
Page 4-l  
						

							0 . Troubleshooting 
DIGITAL BAY CONTROL SUBSYSTEM 
4.06 The following paragraphs detail the troubleshooting procedures 
for the Digital Bay Control subsystem. 
Configuration 
4.07 The Digital Bay Control subsystem consists of one card - the 
Bay Control card (Part No. 9109-017-OOO-NA). 
Bay Control Power-Up Tests 
4.08 The Bay Control card power-up tests are run automatically 
upon power-up of the associated bay, or a reset of the Main 
Control card. Failure of any of the power-up tests will result in the 
flashing of the Bay Control card ALARM LED soon after initialization. 
First-Step Checks 
4.09 Prior to replacing cards as directed by the Digital Bay Control 
subsystem troubleshooting procedures, carry out the following 
checks: 
(a) Reseat the suspect card. 
(b) Check for bent pins at the backplane or module connector, 
where applicable. 
If the above does not clear the fault, proceed to replace the card. 
Power-Up Sequence 
4.10 The Bay Control card power-up sequence is outlined in detail in 
Section MITL9108-093-353-NA, General Maintenance Informa- 
tion. Chart 4-l summarizes the troubleshooting procedures for the Bay 
Control card. 
Page 4-2  
						

							Troubleshooting 
CHART 4-1 
BAY CONTROL CARD TROUBLESHOOTING PROCEDURES 
w 
Action Description / Follow-up 
I Check if the Bay Control card status LEDs indicate l Go to step 2. 
problems (see Table 4-l), or if the Main Control 
‘I-segment displays indicate a Bay Control problem 
- displays show one of the following: 
3 4 -_ 
0 or 0 
z Verify the power is available in the affected bay Yes: l Go to step 3. 
(there should be one or more LEDs lit on the Bay No: l This indicates a bay power supply problem. Refer tc 
Control card, or any other card in the affected Bay Power Supply Troubleshooting Procedures. 
bay). Power available? 
3 Check if all three Bay Control card status LEDs are Yes: * Go to step 4. 
on. No: e Go to step 11. 
4 Reset the Bay by switching the Bay Power Supply l Go to step 5. 
OFF, and then ON again. 
5 Check if all three Bay Control card status LEDs Yes: * This indicates that there is no communication 
light up and remain on. between the Bay Control and the Main Control. 
No: l Go to step 6. 
* Go back to step 1. 
6 Check the PCM cable connecting the bay backplane l Connect the cable properly as required. 
to the control backplane - ensure it is firmly l If the cable is connected pmperly, replace the 
connected at both ends. cable; if the problem persists, go to step 7. 
;TEP 7 SHOULD BE DONE DURING PERIODS OF LOW OR NO TRAFFIC, AS IT MAY HAVE AN ADVERSE EFFECT ON SYSTEN 
‘ERFORMANCE. DO NOT PROCEED TO STEP 7 UNLESS SPECIFICALLY DIRECTED TO IT FROM A PREVIOUS STEP. 
7 Power down the affected bay and remove the Bay * Go to step 8. 
Control card. 
8 Ensure all switches (SWl-1, SWl-2. SW2-1, l Close all switches as required; go beck to step 4. 
SW2-2) are in the CLOSED position (see Figure l If this is not the problem, go on to step 9. 
4-l ). 
9 A problem with the DX chips on the Bay Control l if the problem persists, reinstall the original Bay 
card could cause these symptoms - replace the Control card and go to step 10. 
Bay Control card. 
Page 4-3