Toshiba Strata DK 280 Installation Manual page 219

terminal block. Voltage indication should be 4.5 -
1. Make an external page. The page should be heard
5 VDC.
over the HESB.
Note:
Ringing stops once the call is manually
answered.
There should be NO voltage
potential across terminals 1 and 2.
B. If voltage is not as specified during ringing,
check that the telephone wiring connections to
the HESB have been made properly (wires to
terminals 1 and 2 of the HESB TBl terminal
block may have been reversed).
2. Adjust the HESB volume control to the desired
level.
Talkback Amplified Speaker Installation
Install the HESB talkback amplified speaker option in
accordance with the following steps (refer to
Figure 6-l 4):
1.
Connect a jumper between terminals 1 and 2 of
the HESB TBl terminal block.
Amplified Speaker Installation
Install the HESB amplified speaker option in
accordance with the following steps (refer to Figure 6-
13):
2. Connect a jumper between terminals 3 and 4 of
the HESB TB2 terminal block.
3. Connect a jumper between terminals 5 and 6 of
the HESB TB2 terminal block.
Note:
1.
2.
3.
4.
5.
6.
7.
8.
9.
Connect a jumper between terminals 1 and 2 of
the HESB TBl terminal block.
Connect a jumper between terminals 6 and 7 of
the HESB TBl terminal block.
Connect a jumper between terminals 5 and 8 of
the HESB TBI terminal block.
HESB connections made in Steps 4 - 7 may
be accomplished using the HESB VOICE and
door phone modular jack instead of the TBl
terminal block.
4.
Connect a jumper between terminals 3 and 4 of
the HESB TB2 terminal block.
Connect terminal 7 of the HESB TBl terminal
block to Pin Ll of the MDFB.
5.
Connect a jumper between terminals 5 and 6 of
the HESB TB2 terminal block.
Connect terminal 8 of the HESB TBI terminal
block to Pin L2 of the MDFB.
6.
If using a PIOU or PEPU, connect the PIOU or
PEPU 600-ohm page output (Pins 13 and 38) to
terminals 3 and 4 of the HESB TB1 terminal block.
Connect terminal 9 of the HESB TBl terminal
block to Pin 1 of the MDFB.
7. Connect terminal IO of the HESB TBl terminal
block to Pin 2 of the MDFB.
- or -
8.
If using a PIOUS, connect the PIOUS 600-ohm
page output (SPT and SPR) to terminals 3 and 4
of the HESB TBI terminal block.
If using a PIOU or PEPU, connect the PIOU or
PEPU 600-ohm page output (Pins 13 and 38) to
terminals 3 and 4 of the HESB TBl terminal block.
-or-
Connect the power supply's +12V lead to terminal
1 of the HESB TB2 terminal block, and connect
If using a PIOUS, connect the PIOUS 600-ohm
page output (SPT and SPR) to terminals 3 and 4
the OV lead to terminal 2.
of the HESB TBI terminal block.
Plug the provided power cord into the power
supply and to a 117VAC, 60Hz power source.
Set the PIOU or PEPU SW4 switch to the SPO
position.
9.
10.
Set the PIOU or PEPU SW4 switch to the SPO
position.
Connect the HACU-120's +12V lead to terminal 1
of the HESB TB2 terminal block, and connect the
OV lead to terminal 2.
Amplified Speaker Test
Test the Amplified Speaker installation in accordance
with the following steps:
11. Plug the provided power cord into the-power
supply and to a 117VAC, 60Hz power source.
January 1996
6-19