Carbon Headset/Handset Straps - Toshiba Strata DK 280 Installation Manual

4.
5.
6.
7.
8.
9.
Connect either the HEX-65 or HESC-65A cable
to P601 of the HHEU if the Loud Ringing Bell
option is required (Figure 5-11). Refer to
Chapter 6-Peripheral Installation for HESB
installation procedures.
For the V.3 or earlier HHEUl: if only the headset
is connected to the HHEU, cut both sides of the
R607 resistor on the HHEU (Figure 5-15) and
remove the resistor to eliminate electrical contact.
Note:
Do not cut the R607 resistor if connecting an
HESB to the HHEU for the Loud Ringing
Bell-even if a headset is also installed on the
HHEU.
- or -
For the V.4 HHEUl or the HHEU2: if only the
headset is connected to the HHEU, cut the
speaker OCA strap (Figure 5-15).
Note:
Do not cut the speaker OCA strap if
connecting an HESB to the HHEU for the loud
ringing bell-even if a headset is also
installed on the HHEU.
Position the HHEU subassembly on the standoffs
inside the base (Figure 5-15) and secure with the
two screws provided.
Connect the HHEU subassembly wire plug to the
PI connector on the electronic telephone PCB
(Figure 5-l 3).
Cut the HHEU strap on the telephone PCB (Figure
5-13).
Note:
The HHEU strap must be replaced if the
HHEU PCB is removed from the telephone.
Reinstall the telephone base, and secure it with its
four captive screws.
10. To adjust the volume of the HESB loud ringing
bell: call the telephone connected to the HESB,
and adjust the volume control on both the back of
the HESB and the ring volume control on the
telephone.
COMPONENT SIDE OF HHEU
R607 (HHEUI V.l - V.3)
TO PI, HHEU \ . SW601
DK0074
Figure 5-l 5
HHEU Installation for Electronic Telephones
5.4.3 Carbon Headset/Handset Straps
If a carbon-type handset or headset is connected to
the handset jack on the side of the 6500-series
electronic telephone, two straps inside the telephone
must be cut. Cut the straps in accordance with the
following steps:
t
1.
2.
3.
Note:
It is not necessary to cut these straps if the
headset is connected to the HHEU.
Loosen the four captive screws securing the
telephone base (Figure 5-l), and remove the
base.
Refer to Figure 5-l 3, and locate the carbon straps,
W201 and W202. Cut both straps.
Reinstall the telephone base, and secure it with its
four captive screws.
January 1996
5-13