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| 15. ERROR CODES |
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| <P.C. |
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| Code | Cause and remedy |
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| Err 700 | Abnormal rise in power supply voltage. Turn off the power switch and check the power supply voltage. |
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| Err 701 | Abnormal rise in sewing machine motor power supply voltage. Turn off the power, and then check the voltage. |
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| Problem with power supply P.C. board. |
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| Err 705 | Abnormal drop in power supply voltage. Turn off the power switch and check the power supply voltage. |
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| Err 710 | Abnormal current detected in sewing machine motor. Turn off the power switch, and then check if there are |
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| any problems with the sewing machine. Problem with power supply P.C. board. |
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| Err 711 | Abnormal current detected in needle zigzag motor. Turn off the power switch, move the needle bar sideways |
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| and check that it does not move stiffly. Problem with PMD P.C. board. |
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| Err 740 | Cooling fan connector is not connected correctly, or fan is not operating. Alternatively, the oil pan fan is not |
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| connected correctly, or the fan is not operating. Turn off the power switch and check. |
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| Err 790 | Blown solenoid fuse has been detected. Turn off the power switch and check. |
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| (8A fuse on main P.C. board) |
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| Err 791 | Abnormal current detected in sewing machine solenoid. Turn off the power switch and check the resistances |
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| of the solenoids. Problem with main P.C. board. |
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NOTE:
S-7200A error code comparison table
Error code | Error details | ||
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Err 1 | Err 701 | Overvoltage (450 V power supply voltage is over 450 V, or regeneration ON caused it to | |
rise above 450 V) | |||
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Err 2 | Err 710 | Overcurrent (Alarm signal detected in ARM IPM) | |
Err 3 | Err 131 | Sewing machine motor encoder | |
(If UVW pole pattern in encoder is an unrecognized pattern) | |||
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Err 4 | Err 130 | Lock detected (If either needle up or needle down signal is not input for 3 seconds) | |
Err 5 | Err 50 | Machine head tilt detection (if the machine head detection switch does not turn on when | |
the treadle is depressed forward) | |||
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Err 6 | Err 95 | Voltage drop (If treadle is depressed forward when power is turned on) | |
Err 8 | Err 190 | Sewing machine motor overtime (when motor has been run continuously for 3 minutes or | |
more) | |||
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Err 9 | Err 150 | Sewing machine motor abnormal overheating (if temperature sensor inside sewing | |
machine motor exceeds the specified temperature) | |||
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Err 10 | Err 791 | Solenoid overcurrent detection (If solenoid overcurrent detection has operated) | |
Err 11 | Err 151 | Problem with sewing machine motor temperature sensor (e.g. open circuit in temperature | |
sensor) | |||
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Err 12 | Err 790 | Blown solenoid fuse (If solenoid power supply + E1 is 0 V) | |
Err 13 | Err 90 | Treadle is not connected correctly (If treadle voltage is outside the specified range) | |
Err 14 | Err 450 | Machine head detection problem (If data in machine head detection unit is outside the | |
specified values) | |||
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| Problem with sewing machine motor operation | |
Err 15 | Err 132 | (If sewing machine motor speed exceeds 5500 rpm when needle up or needle down signal | |
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| is detected) | |
Err 16 | Err 191 | Thread trimmer solenoid overtime (if thread trimmer solenoid operating time exceeds 0.8 | |
sec.) | |||
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Err 20 | Err 91 | Problem with treadle setting (If treadle position data is outside the specified range) | |
Err 100 | Err 100 | ||
Err 101 | Err 101 | If DIP switch No. 4 is ON | |
116 |