Mitel SX-200 DIGITAL Pabx Engineering Information Manual

Troubleshooting 
POWER SUBSYSTEM 
4.19 The SX-ZOO@ DIGITAL PABX power subsystem consists of up to 
four bay power supplies, or up to two rear-door power sup- 
plies, depending. upon the configuration of the system. The optional 
uninterruptabie power suppiy (UPS) is optional, and is user-supplied; 
Charts 4-4 and 4-5 outline the troubleshooting procedures for the 
power subsystem. 
Page 4-14  

Troubleshooting 
CHART 4-4 
REAR-DOOR POWER SUPPLY TROUBLESHOOTING PROCEDURES 
tep Action Description / Follow-up Remarks 
1 Check if the ‘AC POWER ON’ LED, located on the Yes: * Go to step 5. see Note 
rear panel of the power supply is on. No : l Go to step 2. 1 
2 Verify that the system is plugged securely into the l Replace / repair cord as required. 
commercial AC source l Go to step 3. 
3 Check the AC power LINE fuse located on the rear l If it has blown, replace it; otherwise, go see Note 
panel of...

Troubleshooting 
CHART 4-5 
BAY POWER SUPPLY TROUBLESHOOTING PROCEDURES 
jtep Action Description / Follow-up Remarks 
1 Check if the power switch on the front panel bay Yes: l Go to step 8. 
power supply is in the “ON” position, and the No : l The power supply is not turned on. Put 
associated LED is on. the power switch into the “ON” position. 
l Go to step 2. 
2 Verify that the system is plugged securely into the * Replace / repair cord as required. 
commercial AC power source. l Go to step 3. 
3 Check...

Troubleshooting 
TB Pin Voltage 
I Minimum 
I Maximum 
-!= a Vdc 
0 Vdc 
- 5 Vdc 
- 10 Vdc + 7.6 
- 5.3 
- 10.5 + a.4 
- 4.7 
- 9.5 
- 48 Vdc 
GND or 0 Vdc. 
90 Vat - 52.0 - 45.0 
85.0 95.0  TABLE 4-2 
BAY POWER SUPPLY TEST POINT VOLTAGES 
Voltage 
+ 5 Vdc 
+ 12 Vdc 
- 12 Vdc 
- 5 Vdc 
- 28 Vdc 
-48 Vdc 
90 Vat 
- Minimum 
+ 4.925 
+ 10.8 
- 13.2 
- 5.5 
- 30.8 
- 53.76 
63.0 Maximum 
+ 5.075 
+ 13.2 
- 10.8 
- 4.5 
- 23.8 
- 40.8 
99.0 
TABLE 4-3 
REAR DOOR POWER SUPPLY TEST POINT VOLTAGES 
Page 4-17  

Troubleshooting 
UNINTERRUPTABLE POWER SUPPLY (UPS) 
4.20 Any UPS may be used with the SX-200F DIGITAL PABX, pro- 
vided that it meets the requirements specified in Section 
MITL9108-093-ZOO-NA, Shipping, Receiving and Installation. Since 
these are available from a number of suppliers, only rudimentary trou- 
bleshooting procedures for the UPS are provided in this document. 
Reference should be made to the appropriate manual provided by the 
manufacturer of the UPS for any self-diagnostic capabilities....

Troubleshooting 
CHART 4-6 
UPS TROUBLESHOOTING PROCEDURES 
Step Action Description / Follow-up Remarks 
1 
Verify the connection between the UPS and the l Secure connection / replace cable as 
commercial AC power source. required. 
l Go to step 2. 
2 Verify the connection between the UPS and the l Secure connection / replace cable as 
PABX. required. 
l Go to step 3. 
3 Check if UPS is functioning correctly. Yes: l stop. 
No : l Go to step 4. 
4 Consult manufacturer’s instructions and make * IMPORTANT:...

Troubleshooting 
MAINTENANCE / CDE TERMINAL 
4.21 Any terminal which is compatible with RS-232C type interface 
protocol may be used with the SX-200@ DIGITAL PABX. Since 
these are available from a number of suppliers, only rudimentary trou- 
bleshooting procedures are provided in this document. Reference 
should be made to the appropriate manual provided by the manufac- 
turer of the terminal for any self-diagnostic capabilities. Chart 4-7 
outlines the troubleshooting procedures for the video display...

Troubleshooting 
CHART 4-7 
MAINTENANCE / CDE TERMINAL TROUBLESHOOTING PROCEDURES 
itep Action Description / Follow-up Remarks 
1 See Note 1. 
2 Verify the connection from the commercial AC l Secure connection / replace cable as see Note 
power source and the terminal. required. 2 
l Go to step 3. 
3 Verify the connection from the terminal’s RS-232 l Secure connection / replace cable as see Note 
socket to the RS-232 socket on the maintenance required. 2 
panel (FE-232 pins 2. 3, 4, 5 and 7 are used). 
*...

Troubleshooting 
PRINTER 
4.22 Any printer which is compatible with RS-232C type interface 
protocol may be used with the SX-200@ DlGlTAL PABX. Since 
these are available from a number of suppliers, only rudimentary trou- 
bleshooting procedures are provided in this document. Reference 
should be made to the appropriate manual provided by the manufac- 
turer of the printer for any self-diagnostic capabilities. Chart 4-8 out- 
lines the troubleshooting procedures for the printer. 
Page 4-22  

Troubleshooting 
CHART 4-8 
PRINTER TROUBLESHOOTING PROCEDURES 
itep Action Description / Follow-up Remarks 
1 Test the printer; use the TEST DEVICE TYPE Pass: l Go to step 2. see Note 
PRINTER command. Fail: l Replace printer; if problem persists, 1 
go to step 2. see Note 
2 
2 Verify the connection from the commercial AC * Secure connection / replace cable as see Note 
power source and the printer. ’ required. 4 
l Go to step 3. 
3 Verify the connection from the printer’s RS-232 l Secure connection /...