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Page Title:
Section II. Troubleshooting Procedures |
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  TM 11-6625-3059-10
Section II. Troubleshooting Procedures
TROUBLESHOOTING
MALFUNCTION
TEST OR INSPECTION
· CORRECTIVE ACTION
1.
ALL OF DISPLAY IS BLANK WITH POWER-OFF SWITCH IN POWER POSITION (Power on)
Step 1. Check that primary power is present
at ME-525A/USM power input (rear panel).
· Verify 120 or 240 VAC present at ME-525A/USM.
Step 2. Check fuse (0.5A, 120 VAC or 0.25A
240 VAC).
· Verify proper fuse installed.
2.
ME-525A/USM DOES NOT OPERATE IN TUNING AUTO MODE.
Step 1. Check connections to signal under
test.
· Verify connections are correct and adequate signal
present.
Step 2. Provide local oscillator signal at
rear EXT OSC connector and operate in EXT
mode.
· If operation in TUNING EXT mode is satisfactory, higher
level of maintenance needed.
3.
ME-525AIUSM DOES NOT OPERATE IN TUNING AUTO AND EXT MODE.
Check connections to signal under test.
· If satisfactory, higher level of maintenance required.
3-1/3-2(blank)
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