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Service Manual
Disassembling covers
SEC.1
Test mode with warning function deactivated
SEC.2
Needle clearance to shuttle
SEC.3
Alignment of needle plate to shuttle
SEC.4
Presser foot height and direction
SEC.5
Origin point positioning of zigzag bight
SEC.6
Needle bar height
SEC.7
Needle threader height
SEC.8
Adjustment of feed dog height
SEC.9
Tension of timing belt
SEC.10
Needle timing to feed dog
SEC.11
Needle timing to shuttle hook
SEC.12
Adjustment of timing of take-up lever to shuttle
SEC.13
Adjustment of meshing position of gears for take-up lever
SEC.14
Retaining bracket for bobbin case
SEC.15
Origin point positioning of feed "zero"
SEC.16
Stitch length
SEC.17
Ajustment of upper thread tension
SEC.18
Adjustment of CAM sensor
SEC.19
SEC.20
Check the Knee Lifter
Sewing machine test mode
SEC.21
Removing top cover and carriage cover of embroidery unit
SEC.22
Adjustment of stop position of embroidery carriage
SEC.23
along X & Y axis
Embroidery unit test mode
SEC.24
Trouble contents with LED on panel
SEC.25
Wiring diagram part1 & part2
SEC.26
Main circuit board and functions of each connector
SEC.27
Contents
Original issue
May 2014
Page 2／64
Model
XL-420
| 2
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