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TM 11-5820-890-30-5
14-9. OPERATIONAL CHECK. Continued
Step 11. CONTINUITY CHECKS.
Action
Response
a. Disconnect W5 test cable P6 at J1.
a. DMM reads less than 5 ohms.
Set DMM to 200 ohms scale.
If not, go to chart 11.
RESPONSE: 6
RESP
SEL:
S2
TEST EQPT SELECTOR: DMM
b. Disconnect W5 test cable P4 at J5.
b. DMM reads less than 5 ohms.
Connect P6 to J1.
If not, go to chart 12.
RESPONSE: 10
RESP SEL: S1
c. RESPONSE: 9
c. DMM reads less than 5 ohms.
If not, go to chart 13.
d. RESP SEL: S2
d. DMM reads less than 5 ohms.
If not, go to chart 14.
e. RESPONSE: 8
e. DMM reads less than 5 ohms.
RESP SEL: S1
If not, 8A2P1 is bad.
f. Disconnect W5 test cable P6 at J1.
f. Scope CH1 reads 400 to 600 mV p-p.
STIMULUS: 8
If not, 8A2P1 is bad.
RESPONSE: 10
TEST EQPT SELECTOR: SCOPE
g. STIMULUS: 6
g. Scope CH1 reads 400 to 600 mV p-p.
If not, 8A2P1 is bad.
h. STIMULUS: 7
h. Scope CH1 reads 400 to 600 mV p-p.
RESPONSE: 9
If not, 8A2P1 is bad.
i.
STIMULUS:
5
i. Scope CH1 reads 400 to 600 mV p-p.
If not, 8A2P1 is bad.
j. Disconnect W1 from DMM.
j. DMM reads less than 5 ohms. If not,
Connect test leads to DMM.
wire from 8A2J3-B to 8A2A1-E5,
Disconnect W5 test cable P5 at J4.
or 8A2J3, is bad.
Connect P5 to J3.
Connect DMM (-) to 8A2E1.
Connect DMM (+) to TP9.
k. Connect DMM (+) to TP12.
k. DMM reads less than 5 ohms. If not,
Connect DMM (-) to 8A2E2.
wire from 8A2J3-C to 8A2A1-E4,
or 8A2J3, is bad.
l. Disconnect DMM test leads.
l. DMM reads 25 to 29 V dc. If not,
Connect W1 to DMM.
wire from 8A2J3-F to 8A2TB1-2,
Set DMM to 200 V scale.
or 8A2J3, is bad.
TEST EQPT SELECTOR: DMM
RESPONSE: 7
RESP
SEL:
S2
CB1:
ON
m. Operational Check Is Complete.
14-7
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