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
is fast flashing,not necessarily at a constant rate.
Power-related Symptoms
1. Meter voltage at AC outlet for power supply: check
power supply indicators and switch position. If AC
power is present:
a.Turn off power supply switch, or pull the plug.
b. Wait 15 seconds.
C.Turn on supply again.
2. Turn power supply off.Remove all power supply
fuses,and measure each fuse for continuity. Do not
rely on visual appearances of fuses. Replace a
blown fuse only with same type and power rating.
3. With power supply turned off, disconnect DC power
cable from KSU connector.
4. Turn on power supply,and check LED status of all
 on the power supply unit.
5. Remove all cards from the KSU of a BUSINESSCOM
PLUS 
 except the MPU card,
or
Restore the BUSINESSCOM PLUS  to its minimum
configuration.
System-related Hardware Condition
1. Using a voltmeter,measure for continuity the CO Line
tip and ring protection fuses on the system backplane.
2. On the BUSINESSCOM PLUS 64, verify that the Matrix
Expansion B-XPU-A 
 are installed as needed.
3. Check that power supply cable is completely
plugged in.
4. Turn off power supply.Remove and firmly reinsert
all 
5. Verify that all cable connections are secure and
correct.
3-6 
						

							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 station cables between simi-
lar station groups (i.e., 
 and  to verify
that the condition is not a wiring problem.
Problem Procedure for Non-Hardware Troubleshooting
Programming-related conditions:
1. Verify that the system options are properly pro-
grammed as specified in the BUSINESSCOM PLUS Soft-
ware Manual for your system.
2. Verify that all of the extension programming
options for operating the feature have been
followed according to the User Guide for the
appropriate software version and Operational
Specifications in the manual for the correct
system-operating software.
3. If the problem exists on one instrument, try the
same steps on a similar instrument. If a problem
exists on one particular function (e.g., Intercom
Calls),try the same steps simultaneously on
several instruments and at several locations.
4. If the problem occurs during a specific procedure
(e.g.,the system is Toll Restricted when it is
not supposed to be),
try the steps one key at a
time and note the results.
Memory-related conditions:
1. Turn off system power supply, wait 15 seconds, and
then turn on power again.
This removes undesirable
data and volatile memory features such as LND and
Message Waiting indications.
2. Reinitialize the system (see Reinitializing the
System in INSTALLING THE KSU AND POWER SUPPLY).
3. Entirely reinitialize the system (see Initializing
the System in INSTALLING THE KSU AND POWER SUPPLY).
4. Turn on the power supply,
and check system status.
If conditions remain the same, replace the MPU PCB
with a new MPU PCB.
Replace the power supply or
replace the KSU itself.
3-7 
						

							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 and the KSU are made with the
correct interconnecting cables.
Problems Involving Interference
Locating a source of interference:
1. Turn off optional equipment, one item at a time.
2. Turn off other equipment in the area of the main
equipment.
3. To detect the presence of improper grounding through
wiring:
Disconnect optional equipment, such as Music Source
or Paging Equipment, by removing all electrical
connections to the system.
4. Try to observe a pattern to the interference, such
as AC hum,interference at a certain time of day,
or every time that some other device is turned on
or off.
5. Try a  AC branch circuit for system
optional equipment.
Ground-related interference:
1. Verify that the system is properly grounded.
2. Verify that the power supply is properly grounded
to the system ground.
3. To determine whether the ground provided is the
source of interference:
Temporarily remove the CWP ground connection from
the system. I f  i t  i s  the source of the inter-
ference,remove it and replace it with a better
ground  source. (The system must not be operated
without a suitable ground:see Site Requirements
in Part 2,PREPARING FOR INSTALLATION.)
3-8 
						

							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
Protection (located in Control
Circuit)
Battery Protection
BAT LED off
 Supply Protection
5V LED off
 Supply
28-Volt Supply
for Audio
28-Volt Supply
for Telephones
28-Volt Supply
for TelephonesProtection
Protection
Protection
Protection
 LED off
 LED off
 LED off
 LED off
HARMER SIMMONS POWER SUPPLY FOR THE BUSINESSCOM PLUS 
(HS117, P/N 
 *
Applied AC Switch On
Green AC NORMAL LED on and
all voltage 
 off
 output functional red LED off
 output functional red LED off
28V output functional
28V red LED on
Battery Backup Box supplies
power for system operation
during AC power failureBATT OP red LED off
out under normal AC power
* Circuit breaker replaces fuse. 
						

							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 
28-Volt Supply Protection
for Telephones 
Green Neon Lamp and all
Power Supply 
 off
All Power Supply 
off
BAT LED off
5V LED off
12V LED off
 LED off
 LED off
 LED off
 LED off
 LED off
3-10 
						

							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 BACKUP BOX
(HS130, P/N 
  Battery Backup Box 
current protectionUpon power failure,
Battery Backup Box does
not support system
operation
3-11 
						

							 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