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DIAGNOSIS TEST
TO START THE DIAGNOSIS TEST
1. WHILE PRESSING THE NEEDLE UP/DOWN AND
LOCK STITCH BUTTONS, TURN THE POWER
SWITCH ON.
THE LCD SCREEN DISPLAY “FACTORY ADJUST”,
THEN ADJUSTING SCREEN WILL APPEAR.
2. TURN THE JOG DIAL TO SELECT “03.Self-Check”.
3. PRESS THE CONFIRM BUTTON.
NOTE:
1. THE POWER SWITCH MUST BE TURNED OFF WHEN REPLACING PARTS.
2. THE LANGUAGE ON THE LCD IS ENGLISH ONLY.
PREPARATION
1. SHIFT THE BOBBIN WINDER SPINDLE TO THE RIGHT.
2. SLIDE THE DROP FEED LEVER TO THE RIGHT (AWAY FROM YOU) TO RAISE THE FEED DOG.
3. SLIDE THE SPEED ADJUSTING LEVER TO THE LEFT.
4. REMOVE THE PRESSER FOOT AND RAISE THE PRESSER BAR LIFTER (AT NORMAL UP POSITION).
5. SET THE NEEDLE BAR AT THE HIGHEST POSITION.
BEFORE STARTING THE DIAGNOSIS TEST,
CHECK OR REPLACE THE FOLLOWING PART(S) IF NOTHING HAPPENS WHEN THE POWER SWITCH IS
TURNED ON:
1. THE CONNECTORS ARE CONNECTED PROPERLY (REFER TO PAGE 20)
2. REPLACE THE CIRCUIT BOARD A (REFER TO PAGE 19 AND 20)
3. REPLACE THE POWER SUPPLY CORD.
4. REPLACE THE SWITCHING POWER SUPPLY.
WHEN THE SEWING LAMPS (LED LAMPS) DO NOT TURN ON,
1. REPLACE THE LED LAMP.
2. REPLACE THE CIRCUIT BOARD A.
Содержание MC7700 QCP
Страница 1: ...SERVICE MANUAL PARTS LIST MC7700 QCP...
