Automatic Dial telephone Switchboard

the hookswitch contact springs, bend the

nuts that hold the ringer to the panel and remove the

contact-spring stiffeners with a spring adjuster and

ringer from the panel.

measure the contact separations with a standard feeler

Secure a new ringer to the panel. Solder the red

gauge. With the hookswitch plunger fully operated on

ringer wire to terminal E4. Connect the black ringer

the hook, adjust the X and Z combinations for a

wire to terminal 2 of the network assembly. Reconnect

contact separation of 0.025 to 0.035 inch and the Y

the line cord, if required, and secure the telephone set

contact combination for a contact separation of 0.045

to its enclosure.

to 0.055 inch.

To replace the ringer capacitor, remove the

After adjustment, check the follow (overtravel) of

telephone set from its enclosure. Remove the

each contact combination. In going from on hook to

capacitor retainer nut and unsolder the capacitor wires

off hook, the minimum follow must be 0.010 inch and

from the terminals. Remove the capacitor from the

the contact springs must not touch adjacent stiffeners.

set. Solder the new capacitor to the terminals and

secure the capacitor to the panel with the retainer nut.

Ringer.-- To adjust the ringer, slightly loosen the

Secure the telephone set to its enclosure.

three screws located on the bottom of the ringer. Be

careful not to loosen the screws too much as the

Network Assembly.-- To replace the network

magnetic field could be broken and the ringer will

assembly, remove the telephone set from its

need remagnetization. Next, insert a nonmagnetic

enclosure. Remove the three nuts holding the network

feeler gauge of 0.025 inch thickness between the

assembly to the frame. Disconnect the wires from the

armature face and the pole face. Slide the coil and

assembly and remove the assembly from the frame.

lamination assembly toward or away from the

Connect the wires to the new network assembly and

armature until a setting of 0.020 to 0.025 is obtained.

secure the assembly to the frame. Secure the

Tighten the screws and remove the gauge.

telephone set to its enclosure.

Gong.-- To adjust the gong, loosen the gong nut

Dial Illumination Lamp.-- To replace the dial

and have someone dial the number of the telephone

illumination lamp, remove the telephone set from its

set. While the telephone is ringing, rotate the gong

enclosure. Remove the locking nut holding the lamp

until you get the desired ring level. Lift the handset to

socket. Lift out the lamp socket and remove the lamp.

stop the ringing. Hold the gong so it does not move,

Insert a new lamp in the socket and secure the lamp

and tighten the gong nut.

socket to the frame. Secure the telephone set in its

enclosure.

REPLACEMENT OF COMPONENTS.-- As

with the version 1 set, most malfunctions of this

COMMON TELEPHONE TROUBLES.--

telephone set will be reported by those using the set.

Common troubles for the version 2 telephone set are

When replacing components in the version 2 set, use

basically the same as those for the version 1 set.

the same basic troubleshooting procedures and safety

precautions as described earlier for the version 1 set.

AUTOMATIC DIAL TELEPHONE

The following paragraphs will discuss the

SWITCHBOARD

procedures for replacing the components of the

version 2 set. Only those components that are

The automatic dial telephone switchboard is the

removed and replaced in a different manner than those

switching center of the dial telephone system. The

described earlier for the version 1 set will be

switchboard is designed to perform the automatic

discussed.

switching functions necessary for shipboard

point-to-point communications between telephone

Ringer.-- To replace a ringer, remove the

sets operating over automatic dial telephone lines.

telephone set from its enclosure. If you are replacing

Some of the automatic dial telephone switchboards

the ringer on a bulkhead-mounted telephone set, you

installed on board Navy ships include the Dynalec

will need to disconnect the 9-lead line cord and take

100/150 line, the Marine Dialmaster, the Dynalec

the set to a workbench.

200/500 line, and the Dimension 2000. The most

Unsolder the red ringer wire connected to

c o m m o n type of automatic dial telephone

terminal E4. Disconnect the black ringer wire from

switchboard installed on board Navy ships today is

terminal 2 of the network assembly. Remove the four

the Dynalec 100/150 line.

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