Section II. REMOVE AND REPLACE DEFECTIVE MODULES OF
LOCATIONS OF PARTS
The modules included in this lesson represent a portion of the total number of
modules in this piece of equipment. The skills required to remove and repair or replace a
portion of the modules are transferable to removing and repairing or replacing all modules.
Study the location of the modules and components in figure 2-6, Main chassis assembly
REMOVE AND REPLACE A DEFECTIVE BUZZER
You have isolated a malfunction to a defective buzzer. Refer to the steps below and
figures 2-1 and 2-6 to replace it.
a. Turn off the unit.
b. Remove power from the unit.
c. Remove the back six screws.
d. Remove the back cover.
Remove the intensity knob.
Remove the printed circuit board (PCB) assembly.
e. Remove and replace the buzzer.
f. Replace the back cover and screws.
g. Perform an operational checkout (Refer to paragraphs 1-7c(1) through (9).
h. Return the unit to service.