TM 11-6625-291-14/TO 33A1-7-23-1
SYMPTOM INDEX
Page
METER INDICATION
No meter indication at all positions of impedance control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3
Meter indication only when impedance control is set at 300 ohms or
below (at 1,000 ohms or below for Output Meters TS-585C/U or TS-585D/U) . . . . . . . . . . . . . . . . . 6-4
Meter indication only when impedance control is set at 400 ohms or
above (at 1,250 ohms or above for Output Meters TS-585C/U or TS-585D/U) . . . . . . . . . . . . . . . . . 6-4
Meter indication too low at all positions of impedance control . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
Meter indication too low when impedance control is set at 300 ohms
below (at 1,000 ohms or below for Output Meters TS-585C/U or TS-585D/U) , . . . . . . . . . . . . . . . . 6-4
Meter indication too low when impedance control is set at 400 ohms or
above (at 1,250 ohms or above for Output Meters TS-585C/U or TS-585D/U) . . . . . . . . . . . . . . . . . 6-5
Meter indication too high at all positions of impedance control . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5
TROUBLESHOOTING
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. No meter indication at all positions of impedance control.
Step 1:
Check for bad meter.
See paragraph 6-16 for testing procedures.
Check for poor contact or no contact of wiper arms on rings of impedance control.
Step 2:
See paragraph 6-20 for cleaning and adjustment procedures
Step 3:
Check for poor contact or no contact of rotary switch parts.
See paragraph 6-22 for testing procedures.
6-3
