Mitel SX-200 DIGITAL Pabx Engineering Information Manual

Troubleshooting 
CHART 3-4 (Cont’d) 
GENERAL TRUNK CARD TROUBLESHOOTING PROCEDURES 
tep 
Action Description / Follow-up Remarks 
!9 Is one of the modules installed a Music On Hold Yes: 
l Go to step 30. 
(MOHVPager module? No 
: l Go to step 31. 
30 Remove the MOH/Pager module from the Universal Pass: * Fault was with MOH/Pager module. see Note 
card and retest. Problem fixed. 7 
Fail: 
l Go to step 31. 
31 Replace Universal card and retest. Pass: * Problem fixed. 
Fail: * Possible problem with Main...

Troubleshooting 
CHART 3-4 (Cont’d) 
GENERAL TRUNK CARD TROUBLESHOOTING PROCEDURES 
1 
;tep Action Description / Follow-up Remarks 
40 Use SHOW ALARMS ALL ALL command to obtain l If there is a system CRITICAL ALARM see Note 
an overall view of the problem(s). condition, go to the Critical Alarm 1 
troubleshooting procedures in paragraph 
2.06. 
0 If there is a system MAJOR ALARM 
condition, go to the Major Alarm 
troubleshooting procedures in paragraph 
2.07. 
* If there is a system MINOR ALARM...

Troubleshooting 
6. This step is necessary to ensure that other faulty modules are not preventing the E&M 
trunk module from functioning properly. 
7. This step is necessary because there are no MOH/Pager module diagnostics (since the 
MOH is always “on-line”, it cannot be taken “off-line” for testing). 
8. Refer to Section MITL9108-093-200-NA, Shipping, Receiving and Installation for details 
on trunk card switch settings. 
Page 3-18  

Troubleshooting 
TABLE 3-1 
TRUNK VOLTAGE AND LOOP CURRENT MEASUREMENTS 
E and M Tip to gnd = OV 
Ring to gnd = OV 
Tip to Ring = OV 
E lead = -48V 
M lead = OV 
E to M lead = 48V Tip to gnd = OV 
Ring to gnd = OV 
Tip to Ring = OV 
E lead = OV 
M lead = -48V 
E to M lead = -48V 
Loop Start 
Ground Start 
Tip to gnd = -2V 
Ring to gnd = -48V = -17V to -6V 
Loop/Tie Tip to gnd = -2V 
Ring to gnd = -48V 
Tip to Ring = -46V = -17V to -6V 
Ring to gnd = -33V to -44V 
= -16V to -38V 
= 12mA to 30mA 
Page 3-19  

Troubleshooting 
Supplementary E&M Trunk Troubleshooting Procedures 
3.06 E&M Trunks are provided for the SX-200@ DIGITAL PABX in two 
forms. The E&M Trunk module (9109-013) is installed on the 
Universal card in the digital bays. The module provides a single E&M 
circuit, which may be programmed as either 2-wire or 4-wire, as well 
as being conditioned via switches as Bell Standard E&M Types I or V. 
The E&M Trunk card (9110-013) is installed in the analog peripheral 
shelves (Bays 3, 4 and 5). This...

Troubleshooting 
CHART 3-5 
SUPPLEMENTAL E&M TRUNK TROUBLESHOOTING PROCEDURES 
itep Action Description / Follow-up Remarks 
1 Perform General Trunk Troubleshooting Procedures l Go to step 2. 
in Chart 3-4. 
2 Disconnect the affected circuit(s) from the l Go to step 3. 
cross-connect field. 
3 IDLE STATE TEST- connect voltmeter between l If not -48VDC. repiace card; otherwise go see Fig 
-48VDC and the M lead. Reading should be to step 4. 3-l 
-48VDC. 
4 INCOMING TEST - seize the trunk incoming - l If...

Troubleshooting 
CHART 3-5 (Cont’d) 
SUPPLEMENTAL E&M TRUNK TROUBLESHOOTING PROCEDURES 
Step Action Description / Follow-up Remarks  , 
12 Power down the affected bay via the power switch l Go to step 13. 
on the maintenance panel/top panel. 
13 Replace the Digital Interface card; power up the Yes: l Power down shelf; go to step 14. 
bay. Does fault persist? No : * Problem fixed. 
14 Replace the Peripheral Control card; power up the Yes: * Power down shelf; go to step 15. 
bay. Does fault persist? No : 0...

Troubleshooting 
Supplementary DID Trunk Troubleshooting Procedures a 
3.07 The DID Trunk (9109-031) card is installed in the digital bays of 
the SX-200@ DIGITAL PABX system. The card provides six trunk 
circuits. The DID/Tie Trunk (9110-031) is installed in analog peripheral 
shelves, if present, and provides two trunk circuits. The Supplementary 
Troubleshooting Procedures for these types of trunks are provided in 
Chart 3-6. Further information concerning the characteristics, param- 
eters and...

Troubleshooting 
CHART 3-6 
SUPPLEMENTARY DID/LOOP/TIE TRUNK TROUBLESHOOTING PROCEDURES 
tep 
Action Description / Follow-up Remarks 
1 Perform General Trunk Troubleshooting Procedures l Go to step 2. 
in Chart 3-4. 
2 Disconnect the affected circuit(s) from the l Go to step 3. 
cross-connect field. 
3 Connect the butt-set across the Tip and Ring of 0 If not, replace the card; if problem 
the trunk circuit - the circuit LED should light persists, possible control problem - go to 
when the butt-set goes...

Troubleshooting 
CHART 3-6 (Cont’d) 
SUPPLEMENTARY DID/LOOP/TIE TRUNK TROUBLESHOOTING PROCEDURES 
:ep Action Description / Follow-up Remarks 
STEP 9 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...