Mitel SX-200 DIGITAL Pabx Engineering Information Manual

							Troubleshooting 
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itep 
10 
11 
Action 
A problem with the DX module on the Main 
Control card, or with Main Control card itself could 
cause these symptoms. Replace Main Control card. Description / Follow-up 
l If problem persists, contact MITEL Field Service. 
Check if Bay Control card ALARM LED is flashing. Yes 8 Go to step 12. 
No: l Go to step 15. 
STEP 12 SHOULD BE DONE DURING PERIODS OF LOW OR NO TRAFFIC, AS IT MAY HAVE AN ADVERSE EFFECT ON 
SYSTEM PERFORMANCE. DO NOT PROCEED TO STEP 12 UNLESS SPECIFICALLY DIRECTED TO IT FROM A PREVIOUS STEP, 
GHART 4-l (Cont’d) 
BAY CONTROL CARD TROUBLESHOOTING PkOCEDURES 
12 
13 
14 Power down the affected bay via the switch on the 
bav power supply. l Go to step 13. 
A problem with the Bay Control card on-board 
EPROM could cause these symptoms - remove 
card and ensure EPROM is installed correctly. (See 
Figure 4-l). l install EPROM correctly as required. 
l If EPROM is installed correctly, go to step 14. 
Replace Bay Control card. l If problem persists, contact MITEL Field Service. 
STEP 15 SHOULD BE DONE DURING PERIODS OF LOW OR NO TRAFFIC, AS IT MAY HAVE AN ADVERSE EFFECT ON 
SYSTEM PERFORMANCE. DO NOT PROCEED TO STEP 15 UNLESS SPECIFICALLY DIRECTED TO IT FROM A PREVIOUS STEP 
15 
16 
17 Check if there is an intermittent problem of loss of 
voice in Bays 3 and 4. 
Power down the affected bay and remove the Bay 
Control card. 
Ensure all switches (SWI-1, SWl-2, SW2-1, 
SW2-2) are in the CLOSED position (see Figure 
4-l). Yes: l Go to step 16. 
No: 0 Go to step 18. 
l Go to step 16. 
* Close all switches as required and go back 
to step 4. 
l If this is not the problem, go to step 18. 
18 1 Contact MITEL Field Service. 
I 
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							Troubleshooting 
TABLE 4-l 
BAY CONTROL CARD STATUS LEDs 
TX LED RX LED 
on on ALARM LED 
on Meaning 
Bay Control card is either waiting for, 
or has lost communication with the 
Main Control card. If this state 
persists for more than a few 
seconds, there is no communication. 
flashing flashing on Bay Control card is being 
downloaded by the Main Control 
card. 
flashing flashing 
Off Bay Control card is up and running 
and communicating to the Main 
Control card. 
Off Off Off 
.flashing This is the normal operating 
condition of the Bay Control card. 
There is a failure on the Bay Control 
card. 
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							Troubleshooting 
I 1 
EEI 
I I 
K40129RlEl 
Figure 4-I Bay Control Card Device Locations 
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							Troubleshooting 
ANALOG BAY PERiPHERAL CONTROL’ SUBSYSTEM 
4.11 The following paragraphs detail the troubleshooting procedures 
for the Analog Bay Peripheral Control Subsystem. 
Configuration 
4.12 The Analog Bay Peripheral Control Subsystem consists of the 
following cards: 
Name Part No. 
l Peripheral Control Card (PCC) 9 108-203-OOO-NA 
0 PCC EPROM 
* Digital Interface Card (DIC) 9 108-002-OOO-NA 
0 DIC EPROM 
l Scanner Card 9 11 O-l 04-OOO-NA, 
9 11 O-004-OOO-NA 
Peripheral Control Subsystem Power-Up Tests 
4.13 The Peripheral Control Subsystem power-up tests are run auto- 
matically upon’ operation of the SYSTEM RESET pushbutton 
located on the Scanner card front panel. The test results are indicated 
in code form on the Scanner card’s 7-segment displays, also located 
on the Scanner card front panel. 
First-Step Checks 
4.14 Prior to replacing cards as directed by the Peripheral 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 
4.15 The Peripheral Control subsystem power-up sequence is out- 
lined in detail in Section MITL9108-093-353-NA, General Main- 
tenance Information. Chart 4-2 summarizes the troubleshooting proce- 
dures for the Peripheral Control subsystem. 
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							Troubleshooting 
CHART 4-2 
ANALOG PERIPHERAL BAY TROUBLESHOOTiNG PROCEDURES 
tw Action Description / Follow-up Remarks 
1 If Scanner 7-segment displays do not read “b3” or l Go to step 2. 
“b4”, press MASTER RESET pushbutton on the 
Scanner card front panel. 
2 Check if power-up tests have begun. Yes: l Go to step 7. see Note 
No : * Go to step 3. 1 
3 Ensure bay power is turned on. * TOP SHELF POWER switch on the 
maintenance panel should be in the ON 
position. 
* Go to step 4. 
4 Verify that power is available in the bay. Yes: l Go to step 5. 
No : * This indicates a power supply problem. 
Refer to the Rear Door Power 
Supply troubleshooting procedures. 
5 Check if Scanner card 7-segment displays are 
blank. 
6 Replace Scanner card. 
7 Check if the Scanner card 7-segment displays 
show the following error code : 
E 
2 Yes: * Go to step 6. 
No : 
* Go to step 7. 
l Go to step 7. 
Yes: * Go to step 6. 
No: 
l Gotostepl5. 
0 Go to step 9. 
maintenance panel. 
and verify that the EPROM IC is * If problem persists, go to step 10. 
helf; go to step 12. 
bay. Does fault per 
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							CHART 4-2 (Cont’d) 
ANALOG PERIPHERAL BAY TROUBLESHOOTING PROCEDURES 
tw Action Description / Follow-up Remarks 
12 Replace the Peripheral Control card; power up the Yes: l Power down shelf; go to step 13. 
bay. Does fault persist? No : l Problem fixed. 
13 Replace the Scanner card; power up the bay. Does Yes: * Possible problem with Main Control card; 
the fault persist? go to step 14. 
No : l Problem fixed. 
14 Power down the system; replace the Main Control Yes: * Refer problem to Mite1 field service. 
card. Does the fault persist? No : l Problem fixed. 
15 Check if the Scanner card 7-segment displays Yes: 0 Go to step 16. 
show the following error code: No: *Gotostep17. 
E 
1 
16 Replace the PCC card. l If problem persists, contact Mite1 Field 
Service. 
17 Check if the Scanner card 7-segment displays Yes: * The bay is functioning correctly. 
see Note 
show one of the following status codes: No: 
l GotosteplLI. 2 
b b 
3 4 
16 Check if the Scanner card 7-segment displays Yes: l Go to step 19. 
show one of the following status codes: No : * Go to step 22. 
0 A 
A A 
19 Press the MASTER RESET push-button on the front e If problem persists, go to step 20. 
panel of the Scanner card. 
20 Verify PCM cabling from front of DIC card to Bay 2 * Correct faulty cabling as required. see Nott 
backplane (Bay 3 and Bay 4 DIC cards), or from l If problem persists, go to step 21. 3 
Bay 4 DIC card to Bay 5 DIC card. see Note 
4 
21 Power down the affected shelf and replace the DIC 0 If problem persists, may indicate a 
card. problem with the Main Control card. 
Refer to Main Control card 
troubleshooting procedures. 
22 If anything else is on the Scanner card 7-segment l If the problem persists, power down the ‘see Note 
displays, press the MASTER RESET push-button on affected bay, and replace the effected 3 
the Scanner card front panel. DIC card. 
* If the problem persists, contact Mite1 Field 
Service. 
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							Troubleshooting 
Notes to Chart 4-2: 
1. 
2. 
3. 
4. The correct 7-segment display reset sequence is: 00, bb, OA, b3 (or b4). Refer to 
Section MITL9108-093-353-NA, General Maintenance Information for details on the 
Scanner card LED codes. 
At this point, if there is no call processing in the affected bay, contact Mite1 Field 
Service. 
In the peripheral cabinet, the affected DIC card will have the “Rx” LED on (i.e., not off, 
not flashing) and the “TX” LED off. 
Refer to Section MITL9108-093-200-NA, Shipping, Receiving and Installation for details 
on DIC card cabling. 
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							Troubleshookg 
FLOPPY DISK SUBSYSTEM 
4.16 The following paragraphs detail the troubleshooting procedures 
for the Floppy Disk Subsystem. Chart 4-3 outlines the trouble- 
shooting procedures for the Floppy Disk Subsystem. Note that some 
troubleshooting of the Floppy Disk Subsystem is done implicitly 
through the troubleshooting of the Main Control card. 
Configuration 
4.17 The Floppy Disk Subsystem consists of the following compo- 
nents: 
Name Part. No. 
l Floppy Disk Drive 9 109-024-OOO-NA, 
9109-‘l24-OOO-NA 
l Main Control Card 9 108-003-OOO-NA 
0 
Interconnecting cables 
Action in Case of Power Loss 
4.18 In order to prevent corruption of the data on the floppy disk- 
ettes, care should be taken to disable system access to the disk 
drive unit prior to taking it off-line for troubleshooting purposes. Al- 
ways release the lock-latch before removing power from the unit. 
Similarly, always ensure power is applied to the disk drive before 
inserting the diskette. 
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							Troubleshooting 
CHART 4-3 
FLOPPY DISK SUBSYSTEM TROUBiESHOOTlNG PROCEDURES 
ep 
Action Description / Follow-up Remarks 
I Ensure bay power is turned on. . Bay power supply switch should be in the 
ON position. 
l Go to step 2. 
! Verify that power is available in the bay. (Measure Yes: l Go to step 3. see Fig 
at backplane.) No : . This indicates a power supply problem. 2-2 
Refer to the Bay Power Supply 
troubleshooting procedures. 
3 Verify power cable and signal ribbon cable are * Go to step 4. see Note 
properly connected to the backplane. 1 
1 Check if Main Control card 7-segment displays Yes: l Indicates original system diskette has see Note 
show the following error code: been replaced, and logs are pending; go 4 
E. to step 5. see Note 
1 No : * Go to step 6. 2 
5 Either (a) Re-insert original diskette, or l NOTE : ONLY RESTART THE SYSTEM see Note 
(b) Restart system DURING LOW OR NO TRAFFIC 3 
CONDITIONS, AS THIS HAS AN ADVERSE 
EFFECT ON SYSTEM PERFORMANCE. 
6 Check if Main Control card 7-segment displays Yes: * Indicates original system diskette has 
show the following error code: been replaced; go to step 7. . 
E. No : 0 Go to step 8. 
2 
3 Either (a) Re-insert original diskette, or e NOTE : ONLY RESTART THE SYSTEM 
(b) Restart system DURING LOW OR NO TRAFFIC 
CONDITIONS, AS THIS HAS AN ADVERSE 
EFFECT ON SYSTEM PERFORMANCE. 
8 Check if Main Control card 7-segment displays Yes: 0 Indicates that the disk drive is empty, and see Note 
show the following error code: that disk updates are pending; 90 to step 2 
E. 9. 
3 No: *Gotosteplg. 
9 Either (a) Re-insert original diskette, or 0 NOTE : ONLY RESTART THE SYSTEM see Notr 
(b) Insert new diskette and restart the system DURING LOW OR NO TRAFFIC 3 
CONDITIONS, AS THIS HAS AN ADVERSE 
EFFECT ON SYSTEM PERFORMANCE. 
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							Troubleshooting 
CHART 4-3 (Cont’d) 
FLOPPY DISK SUBSYSTEM TROUBLESHOOTING PROCEDURES 
jtep Action Description / Follow-up Remarks 
10 Check if Main Control card 7-segment displays Yes: l indicates that the disk drive is empty; go 
show the following error code: to step Il., 
E. No: iGotostep12. 
4 
11 Either (a) Re-insert original diskette, or * NOTE : ONLY RESTART THE SYSTEM 
(b) insert new diskette and restart the system DURING LOW OR NO TRAFFIC 
CONDITIONS, AS THIS HAS AN ADVERSE 
EFFECT ON SYSTEM PERFORMANCE. 
12 Check if Main Control card 7-segment displays Yes: 0 indicates that there is an obstruction 
show the following error code: over the diskette “write notch” (i.e., a 
E. write-protect sticker); remove it. 
5 No: *Gotostep13. 
13 Refer to the troubleshooting procedures for the 
Main Control card. 
Notes: 1. Refer to Section MlTL9108-093-200-NA, Shipping, Receiving and Installation for details 
of the Floppy Disk Drive installation. 
2. Disk update information (e.g., log reports) is stored in system RAM until a period of 
low traffic before being transferred to the floppy disk. 
3. If system is restarted at this point,.the pending logs will be lost. - 
4. Software GENERIC 1001 error codes are: E.l, E.2, E.3, E.4, and E.5; Software GENERIC 
1000 error codes are: lE, 2E, 3E, 4E, and 5E. 
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