Toshiba DK8, DK 16 Hheu Installation for Electronic Telephones, Carbon Headset/Handset Straps

the base (Figure 6-1). The HHEU modular connector for the headset will be accessed through this opening.

3)If using a V.3 or earlier HHEU1, set the SW601 switch to the HEADSET position for HESB and/or headset connection (Figure 6- 15). This switch is not on either the V.4 HHEU1 or the HHEU2, because the opera- tion is automatic with these subassemblies.

4)Connect the HESC-65 or HESC-65A cable (either one) to P601 of the HHEU if the Loud Ringing Bell option is required (Figure 6-11). Refer to Section 100-816-207for HESB in- stallation procedures.

5A) For the V.3 or earlier HHEU1: If only the headset is connected to the HHEU, cut both sides of the R607 resistor on the HHEU (Figure 6-15) and then remove the resistor to eliminate electrical contact.

COMPONENT SIDE OF HHEU
R607 (HHEU1 V.1 ~ V.3)
TO P1, HHEU	SW601
CONNECTOR	(HHEU1A V.1 ~V.3)
OF
TELEPHONE	OCA (HHEU1
PCB
	V.4 or HHEU2)
	P601
HHEU

FIGURE 6-15

HHEU INSTALLATION FOR ELECTRONIC TELEPHONES

INSTALLATION-STATION APPARATUS

SECTION 100-816-206

MARCH 1993

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.

5B) For the V.4 HHEU1 or the HHEU2: If only the headset is connected to the HHEU, cut the OCA strap (Figure 6-15).

NOTE:

Do not cut the 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 subassembly on the stand- offs inside the base (Figure 6-15), and secure with the two provided screws.

7)Connect the HHEU subassembly wire plug to the P1 connector on the electronic telephone PCB (Figure 6-13).

8)Cut the HHEU strap on the telephone PCB (Figure 6-13).

NOTE:

The HHEU strap must be replaced if the HHEU PCB is removed from the telephone.

9)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 the back of the HESB and the ring volume control on the telephone.

4.30Carbon Headset/Handset Straps

4.31If a carbon-type handset or headset is con- nected 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 accor- dance with the following steps:

NOTE:

It is not necessary to cut these straps if the headset is connected to the HHEU.

6-13