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Page Title:
Section III. ORGANIZATIONAL TROUBLESHOOTING |
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|  TM 11-5820-509-12
quarterly preventive maintenance checks and services chart (para 3-13) in the sequence listed.
4-13. Quarterly Preventive Maintenance Checks and Services Chart
Sequence
Item to be inspected
Procedures
Paragraph
No.
references
1
Completeness .................................See that the equipment is complete.................................................................................... (Para 1-1)
2
Spare parts......................................Check all spare parts for general condition and method of
None.
storage. There should be no evidence of overstock, and all
shortages must be on valid requisitions.
3
Cleanliness ....................................See that the equipment is clean.......................................................................................... (Para 4-6).
4
Preservation....................................Check all surfaces for evidence of fungus. Remove corrosion ......................................... (Para 4-14.).
5
Publications....................................See that all publications are complete, serviceable, and
DA Pam 310-4.
current
6
Modifications .................................Check DA Pam 310-7 to determine if new applicable MWO's
TM 38-750 and
have been published. All URGENT MWO's must be ap-
DA Pam 310-7.
plied immediately. All NORMAL MWO's must be
scheduled
7
Connections....................................Check to see that connections are clean and tight. ............................................................ None.
paint on the bare metal to protect it from further
4-14. Touchup Painting Instruction
corrosion. Refer to the applicable cleaning and refinishing
Remove rust and corrosion from metal surfaces by lightly
practices specified in SB 11-573 and TB 746-10.
sanding them with fine sandpaper. Brush two thin coats of
Section III. ORGANIZATIONAL TROUBLESHOOTING
condition or result is observed, perform the corrective
4-15. General
measures indicated in the Checks and corrective measures
Troubleshooting of this equipment is based upon the
column. If the corrective measures indicated do not result
operational checks contained in the weekly preventive
in correction of the trouble, a higher category of
maintenance checks and services chart (para. 4-11). To
maintenance is required.
troubleshoot the equipment, proceed until an abnormal
condition or result is observed. When an abnormal
4-16. Organizational Troubleshooting Chart
Item
Trouble symptom output.
Probable trouble
Checks and corrective measures
No.
1
Panel lamps do not light
a. Defective fuse.
a. Replace appropriate fuse (ac or dc)(para
b.
Lamps burned out.
2
Radio set does not energize
a.
Power cable not properly connected.
a. Check cable connection.
b.
Defective battery.
c.
Defective power source.
3
No audio in headset
a.
VOLUME control set too low.
a. Adjust VOLUME control.
b.
Defective receiving apparatus.
b. Replace apparatus {handset, headset, or
loudspeaker).
4
Weak or no receive output
b. Discharged battery.
5
Weak or no transmit
a. Defective handset or key.
a. Check handset or key
output
b. Discharged battery.
c. Tune transmitter (para 3-6).
(3) Replace the defective fuse with a new
4-17. Removal and Replacement
applicable fuse (5 amp or 20 amp) in the fuseholder.
Procedures
(4) Replace the fuseholder cap in the receptacle and
Remove and replace lamps and fuses (fig. 3-1), using the
turn a quarter turn clockwise.
following procedures:
b. Lamps
a. Fuses. Replace the POWER 5A AC or 20A DC fuses
(1) Unscrew the lampholder cap by turning it
in the holders on the front of the RT-671/PRC-47 as
counterclockwise.
follows:
(2) Pull the lamp out of the holder.
(1)
Turn the fuseholder cap a quarter turn
(3) Insert a replacement lamp in the holder.
counterclockwise.
(4) Replace the lampholder cap by turning it
(2) Remove the fuseholder cap and the fuse from the
clockwise into the receptacle.
holder.
4-3
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