Toshiba Strara CTX Series Installation And Maintenance Manual page 237

4. Connect the HESC-65A cable to P601 of the
HHEU (both HHEU1A versions and the HHEU2
have P601) if the Loud Ringing Bell option is
required.
Refer to Chapter 8 – Peripheral Installation
HESB installation procedures.
5. For the V.3 HHEU1: If only the headset is
connected to the HHEU, cut both sides of the
R607 resistor, then remove the resistor to
eliminate electrical contact.
Do not cut the R607 resistor if
Note
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 HHEU1 and the HHEU2: if only the
headset is connected to the HHEU, cut the
speaker OCA strap.
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.
6. Position the HHEU PCB on the standoffs inside the base, and secure with the two provided screws.
Note See Figures 7-35~7-36
7. Connect the wire plug of the HHEU PCB to the HHEU connector on the PCB in the phone.
8. If an HESB will be connected to the HHEU (for Loud Ringing Bell), locate the EX.SP strap on
the PCB in the telephone and cut the strap.
9. If a headset will be connected to the HHEU, locate and cut the HHEU strap on the PCB in the
phone.
Note If the HHEU PCB is removed from the phone, the HHEU strap must be replaced for
proper telephone operation.
Strata CTX I&M September 2002
Feed Through
for HESC-65(A) Cable
for
1488
Figure 7-34
for Steps 7~8.
HESC-65 Cable
or
HESC-65A Cable
HHEU
HESC-65A Cabling
Station Apparatus
To HESB
Block
SW601
P601
7-39