TiE Businesscom Plus Hardware Manual

SYSTEM TROUBLESHOOTING
Basic System Operation
Visible symptoms with power on:
1. Examine and record any improper indications on all
telephones, including key depression as well as
lamp and LED displays.
2. Locate the Port 10 Display telephone, and check to
see if the hyphen in the Clock display is flashing
 sec. on,   off). If the hyphen is not
flashing or there is no display, the phone is not
operating or the system MPU/CPU card clock is not
running.
3. Check Clock LED on MPU/CPU card. Normal condition...

SYSTEM TROUBLESHOOTING
Problem Related to One Card or One Group of Telephones/Lines
 Remove and firmly reinsert the PCB experiencing
the condition.
2. Temporarily swap this PCB with another similar
PCB in a different KSU location.
3. Remove all 
 of a similar type from the KSU
(i.e.,all station  or all CO Line   and
replace them one at a time.
Check system operation
after inserting each PCB.
A problem on one circuit
card can affect the operation of another PCB in the
system.
4. Temporarily swap the...

SYSTEM TROUBLESHOOTING
Problems Related to  Lines
1. Disconnect system from CO Line input, and meter CO
Line protection fuses to verify continuity.
2. Verify that necessary CO Line Expansion and Matrix
expansion cards are installed in the correct
positions.
3. Measure Loop Current of all lines, as well as
Ringing Voltage,On-Hook and Off-Hook Voltages.
4. Verify that each telephone number is associated with
the line connection that is indicated.
5. Verify that the connections between the 
registered jacks...

III-3 POWER SUPPLY FUSES
Be sure to replace a blown fuse only with one of the
same type and power requirement.
TABLE 3-3 POWER SUPPLY FUSES FOR BUSINESSCOM PLUS SYSTEMS 
Fuse
 
 
 
 
 
 
 
 
 
Function
Indication of Failure
NITSUKO POWER SUPPLY FOR THE BUSINESSCOM PLUS 
 P/N 62505 or P/N 15420)
Power Supply Protection
Red LED off
NITSUKO POWER SUPPLY FOR THE BUSINESSCOM PLUS 
 P/N 
Power Supply Protection
Green Neon Lamp off
All Power Supply 
 off
Transformer Thermal Fuse
All Power Supply 
 off...

III-3POWER SUPPLY FUSES
TABLE 3-3 POWER SUPPLY FUSES FOR THE BUSINESSCOM PLUS SYSTEM 
Fuse
 
 
 
 
 
 
 
 
 
 
FunctionIndication of Failure
NITSUKO POWER SUPPLY FOR THE BUSINESSCOM PLUS 64
 P/N 
Power Supply Protection
Transformer Thermal Fuse
Protection (located in Control
Circuit)
Battery Protection
5-Volt Supply Protection
 Supply Protection
28-Volt Supply Protection
for Audio
28-Volt Supply Protection
for Telephones 
28-Volt Supply Protection
for Telephones 
28-Volt Supply Protection
for Telephones...

III-3POWER SUPPLY FUSES
TABLE 3-3 POWER SUPPLY FUSES FOR BUSINESSCOM PLUS SYSTEMS 
F u s e Function
Indication of Failure
HARMER SIMMON POWER SUPPLY FOR THE BUSINESSCOM PLUS 64
 P/N 15323H or HS118, P/N 15320H)
 Applied AC switch on
Green AC NORMAL LED on
 250 VAC
and all voltage  off
 output functional red LED off
 output functional red LED off
28V output functional28V red LED off
Battery Backup Box supplies
power for system operationBATT OP red LED off
out under normal AC
power
HARMER SIMMONS BATTERY...

 Manual 

BUSINESSCOM PLUS’”
Software Manual 

BUSINESSCOM PLUS’”
Software Manual
Software Release 3
(Enhanced Software Package)
System Practice 01652 
Issue l-lAugust 21, 1987 

This manual has been developed by TIE/communications, Inc. It is intended for the use of its customers and service
personnel, and should be read in its entirety before attempting to install or program the system. Any comments or
suggestions for improving this manual would be appreciated. Forward your remarks to:
TIE/communications, Inc.
8 Progress Drive
Shelton, 
 06484
Attention: Manager, Technical Publications