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12. ERROR CODE
H = Ball-full-H
L = Ball-full-L
O= OUT- BALL
S= STEP MOTOR-SENSOR
Er1: EEPROM error. Change a new chip.
Er2 : 'H' and 'L' haven't got any signal longer than 20 seconds.1)no ball come to
the top.2)two ball-full-sensors are fail.
Er3 : 'stepmotor-origin' sensor always no signal. Or 'Ball-out' sensor always get
signal. reason 1)the sensors wrong.2)stepmotor wrong.
Er4: 'Ball-out' sensor no signal, but balls are passing through('H' got it). reason
1)the sensor wornning.
Er5 : 'Ball-full-H ' sensor no signal, after 3 balls passed through 'L'. reason 1)it's fail
Er6 : 'Ball-full-L ' sensor no signal, after 3 balls passed through 'H'. reason 1)it's fail
Er7 : 'Ball-full-H ' has signal longer than half-second. reason 1)a ball stayed on 'H'
