TM 11-6625-847-45
c. Install the two screws securing the mixer
assembly firmly in place.
d. Mount the LEVEL control knob on its shaft, and
tighten the setscrew.
e. Resolder the two leads to pins 1 and 2 on A1A5
f. Resolder the three leads to the three mixer
assembly connectors.
3-22. Removal of Oscillator Subassemblies A2A1A2,
A2A1A3, and A2A1A4
To remove any of the three identical oscillator
subassemblies A2A1A2, A2A1A3, or A2A1A4 (fig. 4-4)
from the test set (fig. 3-10), proceed as given in a
through c below.
oscillator subassembly connector J2 and pin E1.
b. Loosen the setscrew securing the output level
control knob on the front panel (fig. 3-11). Remove the
knob.
c. Remove the three front panel screws and two
washers which secure the oscillator subassembly to the
front panel. Remove the oscillator subassembly from
the test set.
3-23.
Disassembly of Oscillator Subassemblies
A2A1A2, A2A1A3 and A2A1A4
To disassemble an oscillator subassembly (fig. 8-13)
after removal from the test set, proceed as given in a
through d below.
a. Remove the screw (1) and two washers (2)
securing the cover (3). Remove the cover.
b. Remove the metallic standoff (4).
c. Remove the three screws (5) and six flat
1
Pin
6
Shaft
washers (6) sewing the oscillator subassembly (7).
2
Sprocket gear
7
Transformer assembly
Unsolder and tag all leads. Remove the oscillator
3
Pin
8
Screw
subassembly from the case (8).
4
Hex Setscrew
9
Top plate
5
Screw
10
Transformer section
Note.
To
remove
electrical
Figure 3-9. Turrent transformer assembly, side and
components,
use
conventional
top view.
techniques. Refer to paragraph 3-1.
a. Secure the cover of the mixer assembly firmly
d. Disconnect and tag the leads attached to the
in place with the two screws and four washers.
crystal unit (9). Remove the two nuts (10) and four
washers (11) to remove the crystal unit (9) and crystal
b. Position the mixer assembly in its proper place,
socket clip (12) from the case (8).
at the rear of the test set front panel. Align the
assembly with its mounting holes in the front panel.
3-12
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