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TM 11-5820-890-30-5
5-10. OPERATIONAL CHECK. Continued
Step 1. SAFE TO TURN ON CHECK.
Action
Response
a. Read DMM.
a. DMM reading is greater than 2 k W. If not,
the power amplifier case (6A1) is bad.
b. Set RESPONSE: 8. Read DMM.
b. DMM reading is greater than 2 k W. If not,
the decoder control (6A2) is bad.
c. Set RESPONSE: 9. Read DMM.
c. DMM reading is greater than 5 k W. If not,
go to chart 1.
d. Set RESPONSE: 10. Read DMM.
d. DMM reading is greater than 50 k W. If not,
the decoder control (6A2) is bad.
Step 2. RF OUTPUT CHECK.
Action
Response
a. Connect equipment as shown in figure 5-3.
a. No response.
Set 28 V:
ON.
Set RF SWITCH: 1.
b. Load the following frequencies into
b. No response.
the RT:
CHAN
FREQUENCY (kHz)
1
87975
2
55000
3
33000
c. Set RT CHAN: 1.
c. No response.
d. Press handset PTT switch. Read and
d. Recorded DMM reading is RT channel 1
record level shown on DMM.
RF power (RT 1).
e. Set RT CHAN: 2.
e. No response.
f. Press handset PTT switch. Read and
f. Recorded DMM reading is RT channel 2
record level shown on DMM.
RF power (RT 2).
g. Set RT CHAN: 3.
g. No response.
h. Press handset PTT switch. Read and
h. Recorded DMM reading is RT channel 3
record level shown on DMM.
RF power (RT 3).
5-7
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