3-8 TM109902 (5/03)
USE OR DISCLOSURE OF DATA CONTAINED ON THIS PAGE IS SUBJECT TO THE
RESTRICTION ON THE TITLE PAGE OF THIS DOCUMENT.
C OMMAND S YSTEMS D IVISION
H. TR Limiter
If the TR Limiter is found to be defective replace the component as a complete assembly. When
assembling replacement component observe correct port orientation; input and output ports are
denoted by stencilled words “INPUT” “OUTPUT”. After replacement perform the following
tests located in “Chapter 2 Receiver-Transmitter Testing.”
Log Receiver Tests Paragraph 4.10.
I. Mixer Duplexer
Other than replacement of diodes CR1001 and CR1002, the assembly is non-repairable and
should be replaced as a complete assembly if found defective. After replacement of any diode or
the assembly perform the following tests located in “Chapter 2 Receiver-Transmitter Testing.”
(1) RF Power Test Paragraph 4.6.
(2) AFC Test Paragraph 4.7.
(3) Crystal Currents Paragraph 4.8.
(4) Receiver Tests Paragraph 4.10.
J. Power Supply Fuse F1001 Replacement
Refer to Figure 4-1 located in Chapter 4, Parts List. The power supply fuse F1001 is located on
the interconnect PC board, visible from the left side view of the unit (cover removed).
Replacement of the fuse (10A, AGC10) can be accomplished by using a suitable fuse puller.
After replacement perform the following tests located in “Chapter 2 Receiver-Transmitter
Testing.”
Power Supply Voltage Checks Paragraph 4.1 and 4.2.
K. Magnetron
If the magnetron is found to be defective, replace this component as a complete assembly. After
replacement perform the following tests located in “Chapter 2 Receiver-Transmitter Testing.”
(1) RF Power Output Test Paragraph 4.6.
(2) AFC Tests Paragraph 4.7.
L. Local Oscillator
If the local oscillator is found to be defective replace the component as a complete assembly.
After replacement perform the following tests located in “Chapter 2 Receiver-Transmitter
Testing.”
(1) AFC Test Paragraph 4.7.
The document reference is online, please check the correspondence between the online documentation and the printed version.
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