TM 11-5820-890-304
13-9. OPERATIONAL CHECK. Continued
Step 1. INPUT POWER CHECK.
Action
Response
a. Connect equipment as shown in figure 13-1.
a. No response.
b. Set 28 V: ON.
b. CB1 does not trip. If it does,
Set 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 2. POWER SUPPLY OUTPUT CHECK.
Action
Response
r
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. Set RESPONSE: 10.
c. DMM reads 25 to 29 V dc.
Set RESP SEL: S2. Read DMM.
If not, go to chart 6.
d. Set RESPONSE: 11. Read DMM.
d. DMM reads 12.3 to 13.7 V dc.
If not, go to chart 7.
e. Set RESPONSE: 8. Read DMM.
e. DMM reads 25 to 29 V dc. If not, the
wire from 8A2TB1-1 to 8A2J1 -B,
or connector 8A2J1, is bad.
f. Set RESPONSE: 7. Read DMM.
f. DMM reads 25 to 29 V dc. If not, the
wire from 8A2A2-E11 to 8A2J4-F,
or connector 8A2J4, is bad.
g. Set RESPONSE: 5. Read DMM.
g. DMM reads 6.5 to 7.0 V dc.
If not, go to chart 8.
h. Set RESPONSE: 4. Read DMM.
h. DMM reads 12.3 to 13.7 V dc. If not,
the wire from 8A2TB1-3 to 8A2J5-C,
or connector 8A2J5, is bad.
i. Set RESPONSE: 3. Read DMM.
i. DMM reads 25 to 29 V dc. If not, the
wire from 8A2TB1-2 to 8A2J5-D,
or connector 8A2J5, is bad.
j. Set RESPONSE: 2. Read DMM.
j. DMM reads 180 to 220 V dc.
If not, go to chart 8.
13-5
