TM 5-6675-318-14
Section V DIRECT/GENERAL SUPPORT MAINTENANCE
4-18.
REPAIR PARTS, SPECIAL TOOLS;
(TMDE) ; AND SUPPORT EQUIPMENT.
4-18.1 Common Tools and Equipment.
refer to the Modified Table of Organ
u n i t .
TEST, MEASUREMENT, AND DIAGNOSTIC EQUIPMENT
For authorized common tools and equipment,
ization and Equipment (MTOE) applicable to your
4-18.2 Special Tools; Test, Measurement, and Diagnostic Equipment; and Support
Equipment.
Special Tools, TMDE, and Support Equipment is listed in the applicable
repair parts and special tools list and in Appendix B of this manual.
4 - 1 8 . 3 R e p a i r P a r t s .
Repair parts are listed and illustrated in the Repair Parts
and Special Tools List, TM 5-6675-318-24P covering direct/general support
maintenance for this equipment.
4-19 .
DIRECT/GENERAL SUPPORT TROUBLESHOOTING PROCEDURES. The most common failures
c o v e r e d i n t h i s s e c t i o n u s e t h e s e l f - t e s t f e a t u r e ( p a r a g r a p h 4 - 6 . 2 ) . F a i l u r e or
malfunction not covered requires that systematic evaluation and step-by-step
analysis of the problem be made to isolate the fault.
Perform the preliminary steps
a s f o l l o w s:
a.
Assemble and prepare the equipment in accordance with paragraph 4-6.1.
b.
Perform a display test and self-test in accordance with paragraph 4-6.2.
c.
During self-test, TEST is displayed with receiver status codes, and error
codes are detected.
M u l t i p l e e r r o r s a r e i n d i c a t e d b y d i s p l a y i n g a d d i t i o n a l e r r or
c o d e s t o t h e r i g h t o f t h e f i r s t - d i s p l a y e d e r r o r c o d e .
Upon completion of self-test,
TEST is removed from the display but the codes of any faults detected remain until
the faults are corrected and a successful self-test is completed .
d. Error codes are also recorded on tape if a tape cassette is installed in the
u n i t .
Refer to “Diagnostic Indicators” and “Troubleshooting Aids” in the following
s u b - s e c t i o n s f o r c o r r e c t i v e a c t i o n i f s e l f - t e s t c a n n o t b e c o m p l e t e d s u c c e s s f u l l y or
f o r p r o c e d u r e s t o c o r r e c t l i s t e d f a u l t s.
Maintenance displays.
Several maintenance displays are provided as an aid in
troubleshooting the MX 1502.
The maintenance displays include the self-test, the
150 and 400 MHz channel frequencies, the reference oscillator offset, the 150 and 400
MHz channel signal-to-noise ratios and the display test. The codes are as follows:
4-191
e .
