Control Panel

TM 11-6660-204-25

Pen-lifter mechanism.

in the STANDBY position voltage is applied to all

2-19. Control Panel

circuits except the chart drive motor and the pen-

lifter solenoid; in the POWER ON position, volt-

a. The control panel, in addition to the measur-

age is applied to all circuits.

ing circuit, contains control circuits for the appli-

cation and checking of primary power to the

c. Neon indicator lamp 1201 indicates when

power supply chassis, and the speaker used for

switch S201 is in either STANDBY or POWER

monitoring the input signal.

ON position. Meter M201 is a synchronous reed-

type panel mounted frequency meter indicating

b. Overload circuit breakers magnetic type,

the powerline frequency from 48 to 62 cycles

K201 and K202, rated at 4 amperes, are provided

when switch S201 is operated in either position.

in series with each of the primary 110-volt ac

leads. Application of power is controlled by a

Meter M202 is an iron vane-type panel mounted

ac voltmeter with a range of 0 to 150 volts to

f o u r - p o l e , double-throw switch S201. In the

POWER OFF position no voltage is applied, and

indicate line voltage.