JUKI DDL-9000C-F Instruction Manual page 73

Error
Description of error
code
E750 Sewing machine
stops
E811 Over-voltage
E813 Low voltage
E815 Regenerative
resistor is not
connected
E900 Main shaft motor
IPM overcurrent
protection
E901 Main shaft motor
IPM overload
E903 85-V power supply
fault
E904 24-V power supply
fault
E910 The presser motor
origin retrieval error
E912 Main shaft motor
speed detection
error
E915 Failure of
communication with
operation panel
E918 Main shaft
temperature error
E922 Main shaft control
failure
E924 Motor driver fault
E946 Machine-head
EEPROM write error
E955 Electric current
sensor error
E961 Pitch motor deviation
error
E962 Presser motor
deviation error
E963 IPM temperature
error
Cause
• In the case the optional-input safety
switch is pressed.
• In the case a voltage that is equal to or
more than the guaranteed voltage is
input.
• In the case a voltage of 200 V is applied
though the voltage is set to 100 V.
• In the case a voltage of 220 V is input
to the box of "JA: 120 V".
• In the case a voltage of 400 V is applied
to the box of "CE: 230 V".
• In the case the regenerative resistor is
not connected.
• Maloperation of the main shaft motor.
• In the case the 85-V voltage is not
properly output.
• In the case the 24-V voltage is not
properly output.
• In the case the presser motor has failed
to return to its origin.
• In the case communication with the
operation panel cannot be carried out.
• In the case the temperature of the CTL
PCB is excessively high.
• In the case the main shaft motor is out
of control.
• In the case the motor driver has broken.
• In the case the machine head PCB is
not correctly connected.
• Main motor shaft failure.
• Electric current sensor failure.
• In the case the pitch motor fails to
operate because of an excessive load.
• In the case the presser fails to operate
because of an excessive load.
• In the case the temperature of the CTL
PCB is excessively high.
– 69 –
Item to be checked
• Check whether the supply voltage of
"rated supply voltage ±10 % or more"
is applied.
• Check whether the 100 V/200 V
changeover connector is set correctly.
In the above-described cases, the
power PCB has broken.
• Check whether the regenerative
resister is connected to the
regenerative resistor connector
(CN11).
• Check whether the stepping motor is
faulty.
• Check the F2 fuse.
• Check whether the presser setting is
correct (memory switch No. 23).
• Check whether the presser motor
origin has been correctly adjusted.
• Check whether CN32 has loosened
or come off.
• Check whether the main shaft motor
has short-circuited.
• Check whether the pitch motor runs
smoothly.
• Check whether the presser motor
runs smoothly.