TM
11-5820-921-40-1
1.
Refer to Detail B of figure 3-2.
Power amplifier tubes 1A14V1 and 1A14V2 (Y-621B) contain BERYLLIUM
OXIDE (BeO) CERAMICS. The dust or fumes from BERYLLIUM OXIDE
CERAMICS are HIGHLY TOXIC and breathing them can result in serious
personal injury or DEATH.
2.
Disconnect bayonet connector 1A8P2, on Tank Circuit Module Assembly 1A8, from jack
1A9J2 on Plate Assembly 1A9 if it has not already been disconnected. Disconnect bayonet
connector 1A13P1 on High Voltage Module Assembly 1A13 from jack 1A9J1 on Plate Assem-
bly 1A9. Disconnect bayonet connector 1A10P3 on Tune Detector Module Assembly 1A10
from jack 1A9J3 on Plate Assembly 1A9.
3.
Use an 8-inch flat blade screwdriver to loosen the two captive screws that secure the plate assembly
to the case assembly. Care should be taken so as not to damage any components mounted on the
plate assembly while loosening the retaining captive screws.
4.
When the captive screws are loosened, the spring contacts that apply pressure to exposed anodes
of power amplifier tubes 1A14V1 and V2 will cause the plate assembly to move away from the
tubes. Pick up the plate assembly and remove it from the case assembly.
REMOVAL OF TUNE DETECTOR MODULE ASSEMBLY 1A10
1.
Refer to Detail B of figure 3-2. Use an 8-inch flat blade screwdriver to loosen the two captive
retaining screws that secure the tune detector module to the case assembly.
Grasps the tune detector module firmly and remove it from the case assembly by rocking it gently
2.
back and forth while lifting straight up.
REMOVAL OF RF DRIVER MODULE ASSEMBLY 1A11
3-28.
Refer to Detail B of figure 3-2. Use an 8-inch flat blade screwdriver to loosen the three captive
1.
retaining screws that secure the rf driver module to the case assembly.
2.
Grasps the rf driver module firmly and remove it from the case assembly by rocking it gently
back and forth while lifting straight up.
REMOVAL OF STATIC POWER INVERTER ASSEMBLY lA12
Refer to Detail B of figure 3-2. Use an 8-inch flat blade screwdriver to loosen the two captive
1.
retaining screws that secure the static power inverter assembly to the case assembly.
Grasps the static power inverter assembly firmly and remove it from the case assembly by rocking
2.
it gently back and forth while lifting straight up.
