Janome 5300QDC, Service Manual

28

CORRECT CONDITION

LCD displays “08”.

STEP AND 

ITEMS TO 

CHECK

08)

FOOT 

CONTROL

PROCEDURE

Attach the foot control to the 
machine.
Depress the foot control as far as 
it goes, then release it.
If the result is correct condition, 
press the start/stop button to 
proceed the next step.
If the result is defective condition, 
press the reverse stitch button to 
proceed the next step.

DEFECTIVE CONDITION 

The foot control symbol 
does not appear.
Buzzer does not sound.

–REMEDY–

Replace the foot control.
Replace the machine 
socket (foot control socket).
Replace the printed circuit 
board A.

Shift the slide volume from left to 
right, then return to the left.
If the result is correct condition, 
press the start/stop button to 
proceed the next step.
If the result is defective condition, 
press the reverse stitch button to 
proceed the next step.

09)

SLIDE 

VOLUME

Press the needle up/down button.

If the result is correct condition, 
press the start/stop button to 
proceed the next step.

If the result is defective condition, 
press the reverse stitch button to 
proceed the next step.

The foot control symbol appears when 
the foot control is attached.

Buzzer sounds when the foot control 
is deeply depressed.
Buzzer sounds when the foot control 
is released.
LCD displays “09”.

10)

DC MOTOR

Buzzer sounds at rightmost or leftmost 
position.

LCD displays “10”.

Buzzer does not sound.

–REMEDY–

Replace the printed circuit 
board A.

The machine motor does not 
start.
The motor stops 
immediately.
The motor runs unstable.
 LCD displays “NG“.

–REMEDY–

Replace the DC motor.
Replace the printed circuit 
board A.

SELF-DIAGNOSTIC TEST

Machine runs slow, then fast, and the 
needle bar stops at its highest position.
LCD displays “OK”.

11)

THREAD 

TENSION 

RELEASE 

SOLENOID

Foot control 
symbol

Lower the presser foot.
Press the needle up/down button.

If the result is correct condition, 
press the start/stop button to 
proceed the next step.

If the result is defective condition, 
press the reverse stitch button to 
proceed the next step.

LCD displays “11” and “–off”.
Press the needle up/down button to 
switch the solenoid on or off.
[ON]

Buzzer sounds and the thread 
tension disk opens, and LCD displays 
“--on” while the thread tension disk 
opens. The thread tension disk will be 
closed automatically 5 seconds after 
the thread tension released.

[OFF]

Buzzer sounds and the thread tension 
disc closes, and LCD displays “–off”.

The thread tension disk does 
not open.

–REMEDY–

Replace the solenoid.
Replace the printed circuit 
board A.