Clinton 870LCD, Руководство по обслуживанию

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E. TEST PROGRAM
A test program is available to test the treadle, synchronizer, encoder, and divider for proper
operation. To select the program, press the and keys simultaneously. The display will
show "SYSTEM TEST". Press the key to toggle between each test, i.e. Treadle,
Synchronizer, Encoder, or Divider. Press the key to activate whichever test is selected.
1. Treadle Test
Press the button until "TEST TREADLE" is displayed. Press the button once. The
display should show "NEUTRAL".
a. Move the pedal from neutral to heel 1 then to heel 2.
The display should show each position.
b. Move the pedal forward slowly. As the pedal is moved, a number (0 to 255, see NOTE#4)
will be displayed.
This number is proportional to how far the pedal is moved. The lowest number should be
no more than "8" and the highest number greater than "250".
(NOTE: the maximum speed pot should be in the full cw position.)
c. Press the pedal full forward. Turn the maximum speed pot ccw. The displayed count
should decrease as the pot is turned. Return the pot to its maximum cw position.
2. Synchronizer Test
Press the button. The display will read "TEST SYNCHRONIZER". Press the button.
Rotate the machine pulley by hand. The display will show the position. The positions are as
follows: "UP", "DOWN", and "TRIM".
3. Encoder Test
CAUTION: Remove sewing machine belt. The belt has to be removed because the motor
may not develop sufficient torque to turn the machine.
Press the button. The display will read "TEST ENCODER". Press the button. The
display will read "PUSH TREADLE". Press the pedal fully forward for approximately three
seconds then release the treadle. Do not heel. The result will be displayed, either "OK" or
"NOT OK".
Heel the pedal. The display shows the number of counts. The number should be between
795 and 800 pls.
4. Divider Test
NOTE: This test will not function properly if the encoder test fails. Also remove sewing ma
chine belt.
Press the button, the display will read "TEST DIVIDER". Press the button. The
display reads "PUSH TREADLE". Press the treadle fully forward for 3 seconds, then release
the treadle. If the test works the display will read "DIVIDER OK". If the test fails the display will
show the test which failed, ie. "PASS 1", "PASS 2", "PASS 3", "PASS 4", "PASS 5", or "PASS
6” .
5-4
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ML870LCD-10