Brother RH-9820 Instruction Manual page 122

10. ERROR CODES
Device-related errors
Items with a "*" in the "Page" column should only be checked by a qualified technician.
Code
Lower thread trimmer does not operate,
E630
or lower thread trimming sensor is faulty.
Hammer is lowered, or hammer position
E650
sensor is faulty.
Hammer is not lowered, or hammer
E651
position sensor is faulty.
P.C. board-related errors
Items with a "*" in the "Page" column should only be checked by a qualified technician.
Code
E700 Abnormal rise in power supply voltage.
Abnormal rise in sewing machine motor
E701
drive voltage.
E705 Abnormal drop in power supply voltage.
Abnormal current detected in sewing
E710
machine motor.
E719 Problem detected with PMD P.C. board.
E740 Cooling fan does not operate.
If an error code that is not listed above appears or if carrying out the specified remedy does not solve the problem, contact the
place of purchase.
113
Cause
Cause
Remedy
Turn off the power, and then check that the valve harness
connector and sensor connector are inserted at the main
P.C. board.
Turn off the power, and then check that the hammer valve
harness connector and hammer position sensor connector
are inserted at the main P.C. board.
Turn off the power, and then check that the hammer valve
harness connector and hammer position sensor connector
are inserted at the main P.C. board.
Remedy
Turn off the power and check the input voltage.
Turn off the power, and then check the voltage.
Turn off the power and check the input voltage.
Turn off the power, and then check if there are any
problems with the sewing machine.
Turn off the power, and then check the PMD P.C. board.
Turn off the power, and then check that the cooling fan
sensor connector is connected at the main P.C. board.
RH-9820
Page
19*
19*
19*
Page
23*
20*
23*
*
20*
19*