8. ELECTRICAL MECHANISM - Page 135

8. ELECTRICAL MECHANISM 

128

BAS-311G, BAS-326G

Problem    #7    When the foot switch is depressed, an error code is displayed. 

Cause

Inspection/Remedy/Adjustment

Replacement if a malfunction

1.  If the X feed moves slightly and 

then [E200] is displayed, there is 
a malfunction of the encoder. 

1) Check that connector P20 (X-ENC) is 

inserted into the main P.C. board. 

2)  Check the encoder input while referring to 

“2-8. Input checking method”. 

Pulse motor X assembly 

2. If the X feed moves and then 

[E200] is displayed, there is a 
malfunction of the X home 
position sensor. 

1) Check that connector P8 (SENSOR1) is 

inserted into the main P.C. board. 

2) Check the X home position sensor input 

while referring to “2-8. Input checking 
method”. 

3)  If a metallic object is brought close to the X 

home position sensor and the LED inside the 
sensor does not illuminate, there is a 
malfunction of the sensor. 

4) If it illuminates, the home position dog is 

incorrectly adjusted. 
Switch to home position adjustment mode, 
and adjust the position of the home position 
dog. (Refer to “7-20. Adjusting the home 
position”.) 

X home position sensor 

3.  If the feed mechanism does not 

move and [E200] is displayed, 
there is a malfunction of the 
pulse motor or cord. 

1) Disconnect connector P10 (XPM) from the 

PMD P.C. board, and measure the resistance 
between pins 1-2 and 3-4 at the cord-side 
connector. 
OK if 2

−

3 

Ω

After measuring, insert P10. 

2)  If 1) is OK, there is a malfunction of the PMD 

P.C. board. 

Pulse motor assembly 
 
 
 
 
 
PMD P.C. board 

Problem    #8    When the foot switch is depressed, an error code is displayed. 

Cause

Inspection/Remedy/Adjustment

Replacement if a malfunction

1.  If the Y feed moves slightly and 

then [E210] is displayed, there is 
a malfunction of the encoder. 

1) Check that connector P4 (Y-ENC) is inserted 

into the main P.C. board. 

2)  Check the encoder input while referring to 

“2-8. Input checking method”. 

Pulse motor Y assembly 

2. If the Y feed moves and then 

[E210] is displayed, there is a 
malfunction of the Y home 
position sensor. 

1) Check that connector P8 (SENSOR1) is 

inserted into the main P.C. board. 

2) Check the Y home position sensor input 

while referring to “2-8. Input checking 
method”. 

3)  If a metallic object is brought close to the Y 

home position sensor and the LED inside the 
sensor does not illuminate, there is a 
malfunction of the sensor. 

4) If it illuminates, the home position dog is 

incorrectly adjusted. 
Switch to home position adjustment mode, 
and adjust the position of the home position 
dog. (Refer to “7-20. Adjusting the home 
position”.) 

Y home position sensor 

4885Q