TM 11-5840-281-12-1
4-47.
PERFORMANCE TESTS. (CONT)
TRANSMITTER HIGH VOLTAGE TEST (CONT)
6. On transmitter control panel, observe that meter values are as listed. If any incorrect indication is observed, refer to
higher category of maintenance.
METER
INDICATION
POWER SUPPLY VOLTS meter
3.4 + 0.4 kv
POWER SUPPLY CURRENT meter
260 + 50 ma
MAGNETRON CURRENT meter
27.5 + 5.5 ma
7. On transmitter control panel, press HV OFF switch. Press NAR segment of PULSE SELECT WIDE-NAR switch and
HV ON segment of HV READY-HV ON switch. Segments pressed will light.
8. Observe that meter values are as listed. If any incorrect indication is observed, refer to higher category of
maintenance.
METER
INDICATION
POWER SUPPLY VOLTS meter
3.4 + 0.4 kv
POWER SUPPLY CURRENT meter
100 + 10 ma
MAGNETRON CURRENT meter
9.5 + 1 ma
9. On transmitter control panel, press HV OFF indicator switch and press REMOTE section of CONTROL LOCAL
REMOTE switch.
10. Place LOCAL/REMOTE switch on local control monitor to IND position.
11. Close receiver and transmitter doors.
4-48.
LUBRICATION.
Refer to LO 11-5840-281-12-1 for lubrication instructions for radar set.
4-49.
TOUCHUP PAINTING.
To protect painted surfaces that have been damaged or otherwise indicate deterioration, prepare surfaces and paint as
described below. Refer to TB 43-0118 and TM 43-0139 for detailed instructions on painting and preserving electronic
equipment. Refer to SB 11-573 for painting and preservation supplies available for field use. Refer to AR-746-5 for
color and marking of Army material.
CAUTION
Special nonconductive paint must be used on laminated reflective surfaces of elevation antenna and azimuth antennas.
Avoid excessive thickness of finish (refer to TB 43-0118 and TB SIG 356 for maintenance instructions). Prevent contact
of paint or cleaning solvent with any plastic surfaces.
1. Clean surface of area concerned of dust, dirt, loose or flaking paint, and grease (para 3-3).
2. Remove all dead paint, corrosion, and rust with fine sandpaper.
3. Brush on two thin coats of paint, letting first coat dry before applying second coat.
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