TM 10-3530-207-14
Table 3-1. Operator troubleshooting - continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
BUTTON SEWING MACHINE
Step 5. Lamp assembly or lamp ON/OFF switch may be defective.
Replace lamp assembly (para. 3-12).
Step 6. Electrical power outlet receptacle may be defective.
Notify next higher level of maintenance.
42.
MOTOR DOES NOT START.
Step 1. Check motor ON/OFF switch.
Set motor ON/OFF switch to the ON position.
Step 2. Check that motor power cable is plugged into input power outlet.
Plug power cable into input power outlet, if necessary.
Step 3. Motor ON/OFF switch may be defective.
Notify next higher level of maintenance.
Step 4. Motor may be defective.
Notify next higher level of maintenance.
43.
UNUSUAL NOISE IN MOTOR.
Motor may be defective.
Turn off motor and notify next higher level of maintenance.
44.
MOTOR DOES NOT PULL LOAD.
Step 1. Check to see if motor to sewing machine drive belt is loose, has slipped, frayed or
deteriorated.
Turn off motor and adjust and/or replace belt (para 3-10).
Step 2. Input voltage to motor may be low or motor may be faulty.
Turn off motor and notify next higher level of maintenance.
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