Toshiba DK8, DK 16 manual Installation-Peripherals

2.Install an HHEU PCB and HESC-65A cable in the telephone per Section 100-816-206before proceeding with Step 3.

3)Connect Terminal 1 of the HESB TB1 terminal block to the red (+) wire of the HESC-65A using a modular block.

4)Connect Terminal 2 of the HESB TB1 terminal block to the green (–) wire of the HESC-65A using a modular block.

5)Connect Terminal 8 of the HESB TB1 terminal block to the yellow (L2) wire of the HESC-65A cable using a modular block.

6)Connect the HACU-120 power supply’s +12V lead to Terminal 1 of the HESB TB2 terminal block, and connect the power supply’s 0V lead to Terminal 2.

7)Plug the provided power cord into the power supply and to a 117VAC, 60Hz power source.

DK16 HESB Installation for Electronic Tele- phone Loud Ring Bell (Figure 7-11):

1)On the HESB TB1 terminal block: connect a jumper between Terminals 6 and 7, and con- nect another jumper between Terminals 5 and 8.

2)On the HESB TB2 terminal block, connect a jumper between Terminals 4 and 5.

NOTES:

1.HESB connections made in steps 3~6 may be accomplished using the HESB VOICE modular jack instead of the TB1 terminal block.

2.Install an HHEU PCB and HESC-65 (or HESC-65A) cable in the telephone per Section 100-816-206before proceeding with Step 3.

3)Connect Terminal 1 of the HESB TB1 terminal block to the red (+) wire of the HESC-65 cable using a modular block.

INSTALLATION-PERIPHERALS

SECTION 100-816-207

MARCH 1993

4)Connect Terminal 2 of the HESB TB1 terminal block to the green (–) wire of the HESC-65 cable using a modular block.

5)Connect Terminal 3 of the HESB TB1 terminal block to pin 3 of the electronic telephone’s modular block (VOICE TIP).

6)Connect Terminal 4 of the HESB TB1 terminal block to Pin 4 of the electronic telephone’s modular block (VOICE RING).

7)Connect the HACU-120 power supply’s +12V lead to Terminal 1 of the HESB TB2 terminal block, and connect the power supply’s 0V lead to Terminal 2.

8)Plug the provided power cord into the power supply and to a 117VAC, 60Hz power source.

4.22Loud Ringing Bell Test. Test the Loud Ring- ing Bell installation in accordance with the follow- ing steps:

1)Make a CO or station call to the station config- ured for the loud ringing bell.

•Ringing will be heard over the HESB.

2)Adjust the HESB volume control to the desired level. (Screwdriver adjustment on back of HESB and ring level control of associated telephone.)

3)If ringing is heard at the station, but not over the HESB, perform the following check while the station is ringing:

a) Using a suitable voltmeter, measure volt- age across terminals 1 (+) and 2 (-) of the HESB TB1 terminal block.

•Voltage indication should be 4.5 ~ 5.0 VDC.

NOTE:

Ringing stops once the call is manually an- swered. There should be NO voltage potential across terminals 1 and 2.

b)If voltage is not as specified during ring- ing, check that the telephone wiring con- nections to the HESB have been made properly (wires to terminals 1 and 2 of the HESB TB1 terminal block may have been reversed).

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