Service manual

STP 11-25R13-SM-TG
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Performance Steps
b. If the problem appears to be in a module duplicated in the console, interchange the suspect
module with one operating properly.
NOTE: If the problem remains at the position, the module suspected is not at fault; if the problem moves
with the module, the suspect module is the source of difficulty.
c. Ensure DIP switch field options are set according to desired specification.
4. Isolate the fault to a component.
NOTE: Refer to schematic drawing and location map.
a. Perform resistance and continuity tests with a multimeter.
b. Perform power distribution voltage tests.
c. With a reference level of +4 dB at 1 kHz, check frequency response from 50 Hz to 15 kHz for a
+/- 2 dB tolerance.
5. Replace, repair, or adjust faulty component.
NOTE: Refer to manufacturer's parts list for replacement parts.
6. Operations check the console controls and potentiometers to ascertain that no problems exist;
readjust or align as necessary.
7. Complete DA Form 2407 (Blocks 27, 28, and 36) using the appropriate codes listed in DA Pam 738-
750.
8. Turn the DA Form 2407 into the supervisor to inspect work.
Performance Measures Results
1. Review the DA Form 2407. P F
2. Sectionalize the trouble to a defective stage. P F
a. Visually inspect for discrepancies. P F
b. Operations check the console. P F
3. Localize the trouble to a specific circuit. P F
a. Signal trace. P F
b. If the problem appears to be in a module duplicated in the console, interchange
the suspect module with one operating properly.
P F
c. Ensure DIP switch field options are set according to desired specification. P F
4. Isolate the fault to a component. P F
a. Perform resistance and continuity tests. P F
b. Perform power distribution voltage tests. P F
c. Check frequency response. P F
5. Replace, repair, or adjust faulty component. P F
6. Operations check; readjust or align as necessary. P F
7. Complete DA Form 2407. P F
8. Turn the DA Form 2407 into the supervisor. P F