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16. MACHINE SELF-TEST FUNCTION
This function is for checking that various input signals are set to the user’s preference, and provides a
guide for error analysis.
16.1. LED AND INDICATING LIGHT CHECKING
- Press the [F] key and FINE key, all the LEDs and indicating lights will flash. This function is for checking
faulty LEDs or indicating lights. Press the [C] key to exit. Refer to Figure 16-1. Enter position sensor
checking. Press [C] to exit.
16.2. POSITION SENSOR SIGNAL CHECK
- This function is for checking whether the position sensor, main shaft and main board circuit are
functioning.
- As per section 16.1, slowly rotate main shaft, the displayed value on the right side LEDs should
change. The value increases when the wheel is turned clockwise and decreases when the wheel is
turned counter-clockwise.
- Normally, the value changes from 0 to 63. Press ALU key to enter piezoelectric sensor checking. Press
[C] key to exit.
16.3. PIEZOELECTRIC SENSOR SIGNAL CHECKING
- This function is for checking whether piezoelectric sensor, main board signal processing circuit and
power are functioning.
- Follow 16.2. Press the ALU key for entering (Figure 16-2). Then gently press main shaft. Normally, the
values on two sides LEDs will change. Press ALU or [C] key to exit.
16.4. DIAMETER SENSOR SIGNAL CHECK
- This function checks the diameter sensor and main board signal circuit for damage.
From 16.3 press ALU key enter (Figure 16-3), turn measure scale, value will change, counter-clockwise
turn, value increase, clockwise turn, the value will diminish. Press ALU key, enter press sensor signal
check. Press C key to exit.
POS.
8
Figure 16-1
28
8i 5
Figure 16-2
28
8i A
Figure 16-3
