Janome MB-4 Instruction Book page 85

Troubleshooting
Problem
The fabric puckers.
The LCD screen is not clear.
The touch panel keys do not
work correctly.
The PC card or USB
memory does not work.
Communication with the PC
does not work.
The thread barkage warning
appears though the thread
is not broken.
NOTE:
It is not abnormal that a slight humming sound is comming
from the internal motors when the machine stands still.
Cause
1. The needle thread tension is too tight.
2. The fabric is not stretched tight enough in the
hoop.
3. A stabilizer is not used.
1. The brightness of the LCD screen is not
adjusted properly.
1. The key position is out of alignment.
2. The control system does not work correctly.
1. The PC card or USB memory is not inserted
properly.
2. The memory bank of teh PC card or USB
memory is damaged.
1. The USB cable is not connected properly.
2. The existing machine ID number is used.
1. The thread detector sensitivity is too sensitive.
82
Reference
See pages 30.
See page 22.
See page 15.
See pages 24, 61.
See page 62.
Turn the power off and
turn it on again.
See pages 73, 74.
See pages 58, 64.
See page 14.
See pages 57, 63.
See pages 59, 68.