Brother HE-800A Service Manual page 158

6. ELECTRIC COMPONENTS AND SOFTWARE
Code
Stitch no.
E-55
stitches.)
E-59 Sewing data error
E-62 Needle up error during operation
E-63 Needle down error during operation
E-64 Timing signal error during operation
E-70 Machine motor running error
E-74 EEPROM error
E-80 Communication ready error
E-81 Communication error
Machine motor overload
E-90
(Excessive load during sewing.)
150
Cause
error (Exceeds 700
1. Turn off the power and then back on again.
* The zigzag pitch, front tack pitch and rear tack pitch
will be automatically doubled and the error will be
cleared.
2. If an error still occurs after 1. is carried out, turn off the
power and initialize the parameter settings.
Turn off the power and initialize the parameter settings.
Turn off the power.
<Software>
▪ If the sewing machine stops before the needle up
position, reduce the setting value for machine motor
parameter No. 00 (machine motor stopping position).
▪ If the sewing machine stops after the needle up position,
increase the setting value for machine motor parameter
No. 00 (machine motor stopping position).
<Hardware>
1. Turn the pulley by hand and check if the upper shaft
locks or not.
2. If an error still occurs after 1. is carried out, check that
connector P3 on the main P.C. board is properly
connected.
1. Turn off the power.
2. Turn the pulley by hand and check if the upper shaft
locks or not.
3. If an error still occurs after 1. is carried out, check that
connector P3 on the main P.C. board is properly
connected.
1. Turn off the power.
2. Turn the pulley by hand and check if the upper shaft
locks or not.
3. If an error still occurs after 1. is carried out, check that
connector P3 on the main P.C. board is properly
connected.
1. Turn off the power.
2. Check that machine motor harness connector CN7 on
the 1-step power supply circuit board is properly
connected.
3. Check that the pins of machine motor harness connector
CN7 are inserted correctly.
Turn off the power and replace the main P.C. board.
1. Turn off the power.
2. Check that there is data in the main circuit board ROM.
3. Check that the ROM chips of the main P.C. board are
properly connected. (Check position, orientation, lead
clinching.)
1. Turn off the power.
2. Check that there is data in the main circuit board ROM.
3. Check that the ROM chips of the main P.C. board are
properly connected. (Check position, orientation, lead
clinching.)
1. Turn off the power.
2. Turn the pulley by hand and check if the upper shaft
locks or not.
3. Check that connectors P3 and P6 on the main P.C.
board are properly connected.
4. Check that machine motor harness connector CN7 and
power supply harness connector CN8 on the 1-step
power supply circuit board are properly connected.
HE-800A
Remedy