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TM 11-5820-890-30-5
14-9. OPERATIONAL CHECK. Continued
Step 8. INPUT POWER CHECK.
Action
Response
a. Connect equipment as shown in figure 14-1.
a. No response.
b. 28 V: ON
b. CB1 does not trip. If it does,
CB1:
ON
go to chart 1.
Adjust lamp DS1 for maximum brightness.
DS1 lights. If not, go to chart 2.
c. Read DMM.
c. DMM reads 25 to 29 V dc.
If not, go to chart 3.
Step 9. POWER SUPPLY OUTPUT CHECK.
Action
Response
a. Set S1:
RMT
a. DS1 turns OFF. If not, go to chart 4.
b. Connect jumper between TP5 and TP4.
b. DS1 lights. If not, go to chart 5.
c. RESPONSE: 10
c. DMM reads 25 to 29 V dc.
RESP
SEL:
S2
If not, go to chart 6.
d. RESPONSE: 11
d. DMM reads 12.3 to 13.7 V dc.
If not, go to chart 7.
e. RESPONSE: 8
e. DMM reads 25 to 29 V dc. If not,
wire from 8A2TB1-1 to 8A2J1-B,
or 8A2J1, is bad.
f. RESPONSE: 7
f. DMM reads 25 to 29 V dc. If not,
wire from 8A2A2-E11 to 8A2J4-F,
or 8A2J4, is bad.
g. RESPONSE: 5
g. DMM reads 6.5 to 7.0 V dc.
If not, go to chart 8.
h. RESPONSE: 4
h. DMM reads 12.3 to 13.7 V dc. If not,
wire from 8A2TB1-3 to 8A2J5-C,
or 8A2J5, is bad.
i. RESPONSE: 3
i. DMM reads 25 to 29 V dc. If not,
wire from 8A2TB1-2 to 8A2J5-D,
or 8A2J5, is bad.
j. RESPONSE: 2
j. DMM reads 180 to 220 V dc.
If not, go to chart 8.
14-5
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