Elna Envision CE20 service manual

Disassembly and assembly the external parts
face plate and top cover
belt cover
base cover
lower free arm cover
base (embroidery unit)

Adjustments
Presser bar height and alignment
-Height and alignment of the embroidery foot "p"
needle centering
hook timing
needle bar height
clearance between needle and hook
backlash of hook drive gear and lower shaft gear
needle bar swing/sensor
feed dog height
upper and lower thread tension
tension release mechanism
knee lifter position
knee lifter position
feed balance
needle thread hook
buttonhole
presser bar sensor

to replace electrical and mechanical component
upper tension
circuit boards
motor and belts
transformer
mechine socket
LCD screen
touch panel
bobbin thread sensor
alignment of embroidery carriage
feed dog up/down function
change the language
CE 20 diagnosis chart

45 pages