promelectroavtomat M3000C, Руководство по обслуживанию

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Test mode for main PC board only
Feed dog position, thread cutting check
1. Turn on the power with the front cover removed.
(Disregard whether the needle is up or down and run Z, F, S, AT initialization.)
2. Press the SW4 switch.
Feed dogs = change between the left position and right position each time the switch is pressed.
Left position 10 pulses at point 1-2 left from the center (5 pulses at point 2-2)
Right position 10 pulses at point 1-2 right from the center (5 pulses at point 2-2)
NOTE) Needle position is right position
3. SW5
Feed dogs = change between the front and middle position each time the switch is pressed.
Front position Feed 5mm
Middle position Feed 0mm
4. Press the SW3 switch.
<When the needle is down>
A.
Thread cutting solenoid = changes between ON/OFF each time the switch is pressed.
When ON, it will perform at a 90% efficiency of normal operation.
B. Operate the feed maximum thread tension maximum actions when the thread cutting solenoid timing is OFF.
Feed maximum operation
After operating the feed to the 4mm position, operate the feed to the 5mm position.
Thread tension maximum operation
After operating to 9 on the thread tension scale, operate to the 0 position on the scale.
<When the needle is up>
Perform the maximum width operation.
After operating to the needle bar release position, operate to the rightmost position.
The pulse motor will operate at 70% power.
5. Press the SW1 switch.
Needle position = changes between the up and down position each time the switch is pressed.
Feed Front/Back Check
1. With the front cover removed, switch on the power.
(Z, F, S, and AT initializations are run whether the needle is up or down.)
2. Press the SW3 switch.
3. Bobbin thread detection If the bobbin thread is not detected, the buzzer buzzes on and on.
4. Press the S/S switch.
The needle is fed 100 front and back at a fixed high speed (710 RPM) and the sewing machine sews
forward and reverse.
When the sewing is complete, the needle is raised and the sewing machine stops.
Pressing the S/S switch during the operation also stops the sewing machine with the needle raised.
NOTE) Once the sewing has been executed, the bobbin thread can no longer be detected.
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