Mitsubishi PLK-E2010R Instruction Manual page 50

Bad condition
Pre-tension is too loose
Trimmer timing is delayed
4.
Thread tail
from needle is
Upper thread tension release timing
too long after
is too fast
timing
Thread guide is in wrong position
Trimmer function is canceled
Fixed knife is dull
Movable knife is in wrong position
5.
Trimming is not
Skip stitching happens at trimming
functioned
Trimmer air cylincle is out of order
Trimmer timing is wrong
Needle and rotating hook clearance is
too big
Needle and rotating hook timing is not
6.
correct
Skip stitching
Needle is bent
often happens
Needle is in wrong position
Stepping foot position is not correct
Upper thread tension is not tight
enough
Thread tension regulator's discs are
opened during sewing
7.
Stitch forming
is loose
Stepping foot position is not correct
Stepping foot up and down timing is
not proper
Cables wiring is disconnected
8.
System software is not loaded
Sewing
machine does
not work eve Emergency stop switch is kept ON
start switch is
turned ON
Start switch is out of order
9. Synchronizer cable is disconnected
Sewing machine
runs idle at high
Synchronizer is out of order
speed when power
switch is turned ON
Work holder activate solenoid valve
cable is disconnected
10.
Work holder Work holder presser is not strong
does not work enough
Work holder switch is out of order
Cause
- 45 -
Remedy
Make pre-tension tighter
Adjust trimmer cam position
Adjust synchronizer position
Delay tension release timing
Adjust thread guide position
properly
Resume trimmer function
Change it new knife
Adjust movable knife position
properly
Fix skip stitching
Change it new air cylincle
Adjust trimmer cam position
adjust synchronizer position
Adjust needle and rotating hook
clearance properly
Adjust needle and rotating hook
timing properly
Change it new needle
Amend needle position
Adjust stepping foot position
properly
Increase upper thread tension
Adjust tension regulator position
properly
Adjust upper tension foot timing
properly
Adjust stepping foot timing properly
Adjust stepping foot timing properly
Connect all cables precisely
Load system software to control
box
Release emergency stop switch
lock
Change it new start switch
Connect synchronizer cable
precisely
Change it new synchronizer
Connect the cable precisely
Increase work holder presser
Change it new work holder switch
Ref. page &
Item
P36-7-11
P32-7-9-2.6
P37-7-15
Control unit
P35-4)
Control unit
P30-7-9-2.1
P30-7-9-2.2
P44-3
---
P37-7-9-2.6
P37-7-15
P21-7-2-8)
P21-7-2-7)
---
P20-7-1
P23-7-5
P19-6-3-2)
P36-7-13
P35-7-10
P23-7-5
P26-7-5-3
P9-3-12
P12-5-1
P16-6-1
---
Control unit
---
Control unit
P28-7-8-1
---