Figure 6-11.--Dial speed adjustment diagram.

The following paragraphs will discuss the

dial frame as shown in figure 6-11. To increase dial

procedures for replacing the components of the type

speed, use a pair of needle-nosed pliers to detach the

G (version 1) telephone set.

tension spring hook from the tab being used. Then,

Handset Transmitter and Receiver Units.--

attach the tension spring hook to the next tab in the

The transmitter and receiver units are not repairable

clockwise direction. To decrease dial speed, attach the

and must be replaced if defective.

hook to the next tab in the counterclockwise direction.

To replace a transmitter unit, unscrew the

REPLACEMENT OF COMPONENTS.--

transmitter cap and lift the transmitter unit out of the

Most malfunctions of the type G (version 1) telephone

transmitter mounting cup. Insert the new transmitter

set will be reported by those using the set. After

unit in the mounting cup and screw the transmitter cap

verifying the malfunction, you should check all

onto the handset.

associated wiring for correct and secure connections

To replace a receiver unit, unscrew the receiver

before you attempt to troubleshoot the set for faulty

cap and lift the receiver unit out of the handset.

components.

Disconnect the handset cord red lead and green lead

from the screw terminals of the receiver unit. Connect

When working on the inside of the telephone set,

the red lead and green lead to the the screw terminals

you must follow high-voltage safety procedures.

of the new receiver unit. Insert the new receiver unit

System line voltages can be as high as 54 volts dc and

into the handset and screw the receiver cap onto the

ringing voltages as high as 110 volts and can be

handset.

dangerous. Always turn off and tag out the telephone

Handset Cords.-- Handset cords are standard

station line switch at the automatic telephone

stock items and can be readily replaced when the cord

switchboard before you begin working on the internal

becomes worn, frayed, or defective. To replace a

components of the telephone set.

handset cord, remove the telephone set from its

When replacing the type G modular telephone

enclosure and disconnect the three handset cord

sets, be sure you use the correct model set for the

terminal wires from the terminal board on the set.

enclosure concerned.

Remove the cord from the telephone set and the

handset from its holder. Remove the receiver unit from

the handset, and disconnect the cord terminal wires

from the receiver unit. Remove the transmitter unit

and the transmitter mounting cup. Disconnect the

handset cord terminal wires from the mounting cup.

Carefully pull the handset cord from the cord hole in

the handset housing.

Insert new cord terminal wires into the housing

cord hole. There is one long green wire and one red

jumper wire for connection to the receiver. There is

also one short red wire and one short yellow wire for

connection to the transmitter mounting cup. The other

end of the red jumper wire connects to the same

terminal on the mounting cup as the short red wire.

The cord is pressure-fitted in the handset housing and

locked in place by two tabs on the transmitter

mounting cup.

Connect the handset cord terminal wires to the

mounting cup, and put the transmitter back in the

handset. Connect the cord terminal wires to the

receiver, and put the receiver back in the handset.

Gently insert the handset cord through the cord hole

in the chassis of the telephone set. Install the strain

Figure 6-11.--Dial speed adjustment diagram.

6-12