Meter indication too high at all positions of impedance control.

TM 11-6625-291-14/TO 33A1-7-23-1

TROUBLESHOOTING (CONT)

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

Step 2:

Check for bad capacitor Cl (Output Meters TS-585A/U and TS-585B/U only).

See paragraph 6-9 for test and replacement procedures.

Step 3:

Check for bad autotransformer.

See paragraphs 6-18 for testing procedure

6. Meter indication too low when impedance control is set at 400 ohms or above (at 1,250

or above for Output Meters TS-585C/U and TS-585D/U).

Check for poor contact or no contact of wiper arms on rings of impedance control

See paragraph 6-20 for cleaning and adjustment procedures.

7. Meter indication too high at all positions of impedance control.

Step 1:

Check for poor calibration of output meter.

See paragraph 6-26 for calibration procedures.

Step 2:

Check for bad rotary switch contacts.

See paragraph 6-22 for testing procedures.

Step 3:

Check for bad radial resistors R12, R13, or R14.

See paragraph 6-11 for test and replacement procedures.

Step 4: Check for bad axial resistors R4, R5, or R6.

See paragraph 6-13 for test and replacement procedures.

Step 5:

Check for bad meter.

See paragraph 6-16 for testing procedures.

6-5