TiE Businesscom Plus Hardware Manual

II-4INSTALLING THE  AND CHECKING WIRING
Static
Precautions The 
 are sensitive to static electricity. The
rules below are safe-handling techniques for 
sensitive equipment.
Following them when installing
or maintaining 
 will help you to guard against
static damage.
o Always handle a PCB in the static-free, conductive
bag in which it was shipped. Do not use this bag as
a holder for the PCB when it is outside the bag.
o Do not slide the PCB across a work surface.
o Only surfaces or items at ground...

II-4INSTALLING THE  AND CHECKING WIRING
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Cover
C/O
FIGURE 2-7 BUSINESSCOM  KSU (P/N 15000 or P/N 15001)
2-20 

II-4INSTALLING THE  AND CHECKING WIRING
 
Preparation,
BUSINESSCOM PLUS 
Before installing optional  prepare the 
as
1.
2.
3.
4.
follows:
Strap the battery into place, but do not plug it
into connector CNBT.When the battery is weak or
is not connected,
the letters BAT flash in the
upper right-hand corner of all Display phones.
On switch 
set toggle 1 so that it is opposite
the number 1.
On set toggle 2 so that it is next to the
number 2 for internal Music On Hold 
 or
opposite the number 2 for external...

II-4INSTALLING THE  AND CHECKING WIRING
BatteryBe sure that the lithium battery is in place but
unconnected.Display phones indicate if the battery
is not connected by flashing the letters BAT in the
upper right corner of the display.
Inserting 
 in BUSINESSCOM PLUS 
 &
To install a  (when only key telephone
circuits are used),
 and/or a  PCB,
refer to Figure 2-7 and Figure 2-8Installing the
B-COU-A PCB, BUSINESSCOM PLUS 
 and connect the
ribbon cables as follows:
Connector
 &   
CNA2 
 &  or  
CNB2 CNB2...

II-4INSTALLING THE  AND CHECKING WIRING
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Cover
FIGURE 2-8
INSTALLING THE  PCB,
BUSINESSCOM PLUS 
2-23 

II-4INSTALLING THE  AND CHECKING WIRING
Inserting  in the BUSINESSCOM PLUS 
Setting WR Set the WR switch on the B-MPU- PCB to the initial
position.
Setting
 B-TSU-ATo select internal or external Music On Hold on a
BUSINESSCOM PLUS 
 set SW1 on the B-TSU-A
PCB as follows:
Feature
 
Internal MOHPosition 1
External MOHOpposite end of Position 1
Potentiometer
AdjustmentsPotentiometer 
 on the B-TSU-A PCB is used to
adjust the background level for MOH.
(For installation of optional 
 see INSTALLING
OPTIONAL...

INSTALLING OPTIONAL EQUIPMENT
This section provides information on equipment and
accessories required to use optional features.
Installing the B-LBR-A PCB for Loud Bell Relay Operation
Refer to Figure 2-9Installation of B-TBU-D PCB for
B-LBR-A Operation.
Installation
1.
2.
3.
4.
5.
1
Unplug the telephone,
if previously installed.
Remove two screws from bottom of telephone, and
open it.
Remove the existing B-TBU-A/B/C
and replace it with the B-TBU-D
Remove the existing 4-conductor
Replace it with the...

INSTALLING OPTIONAL EQUIPMENT       -----
              
______
FIGURE 2-9INSTALLATION OF B-TBU-D 
FOR B-LBR-A OPERATION 

INSTALLING OPTIONAL EQUIPMENT
For any station position
r
66 Block
  I
 --1111GRN 
BCP-LBR
DC INI I
I 
M
C
Make
Common
Break
Make
Common
Break
Station Cable
  
 I
 KSLJSTA  
GRN  WHT
Modular Jack
FIGURE 2-10 BUSINESSCOM PLUS LOUD BELL RELAY WIRING
2-27 

INSTALLING OPTIONAL EQUIPMENT
Installing the B-LBR-A PCB for Loud Bell Relay Operation 
Refer to Figure 2-10BUSINESSCOM PLUS Loud Bell
Relay Wiring.
At the Station 
 Block end:
1. Terminate the 
 and  pairs normally.
Do not install bridging clips.
2. Connect:
o the 
 lead to screw terminal C on the
B-LBR-A box
o the 
 lead on terminal E.
o one pair of cross-connect cabling between the two
L terminals on the B-LBR-A box and each side of
the AT station leads on the B Block, for this
extension.
3. Install...