TM 11-6625-539-14-4
Operators
control.
Section III. OPERATION UNDER USUAL CONDITIONS
the cover. These are used for in-circuit testing of
devices.
a. Unsnap the latches that secure the cover to
the test set (fig. l-l); remove the cover.
Batteries must be installed before initial opera-
NOTE
tion. If the battery test check indicates that bat-
Batteries must be installed before initial
teries are depleted during subsequent operation,
operation. Refer to paragraph 2-8.
replace them as follows:
b. With the polarity switch in the OFF position,
check the zero adjustment of the meter pointer. If
secure the battery compartment cover (3) to the
it is not zeroed, use a screwdriver to turn the
rear of the unit; remove the cover.
meter zero adjusting screw as required to zero the
b. Remove the six size D dry cell batteries (2)
meter mechanically.
drom the battery holder and discard them.
c. Operate the BAT CHK switch in the direction
c. Install the new dry cell batteries (2) into the
of the arrow and hold it while checking the indica-
battery holder; be sure to observe the polarity
tion of the meter. It should read in the BAT CHK
marked on the battery holder in the case. The
area. If it fails to indicate in this area, the batter-
bottom side is marked + and the top side is
ies are defective and must be replaced. Refer to
marked . Install batteries with polarities shown
in figure 2-2.
marginal, check batteries while circuits are loaded
to assure that sufficient power is available.
d. Reinstall the battery cover (3) using the six
captive screws (1).
d. Remove the three electrical test leads from
