8. ELECTRICAL MECHANISM - Page 137

8. ELECTRICAL MECHANISM 

130

BAS-311G, BAS-326G

Problem    #9    When the foot switch is depressed, an error code is displayed. 

Cause

Inspection/Remedy/Adjustment

Replacement if a malfunction

3.  If the work clamp moves slightly 

and then [E300] is displayed, 
there is a malfunction of the 
encoder. 

1) Check that connector P5 (P-ENC) is inserted 

into the main P.C. board. 

2)  Check the encoder input while referring to 

“2-8. Input checking method”. 

Pulse motor P assembly 

4.  If the work clamp operates and 

[E300] is displayed, there is a 
malfunction of the work clamp 
home position sensor. 

1) Check that connector P8 (SENSOR1) is 

inserted into the main P.C. board. 

2)  Check the work clamp home position sensor 

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

3)  If a metallic object is brought close to the 

work clamp 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”.) 

Work clamp home position 
sensor  

5.  If the work clamp does not move 

and [E300] is displayed, there is 
a malfunction of the pulse motor 
or cord. 

1) Disconnect connector P3 (PPM) 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 P3. 

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

P.C. board. 

Pulse motor P assembly 
 
 
 
 
 
PMD P.C. board 

Problem    #10    CF media indicator does not illuminate. 

Cause

Inspection/Remedy/Adjustment

Replacement if a malfunction

1. Incorrectly inserted 
 

1)  Check the insertion direction of the CF card. 

(The side with the projection should be at the 
left.) 

2)  Check the insertion of the CF card. 

2.  CF card incorrectly formatted. 

Check the format of the CF card. 
(Use 16-sector formatting.) 

3.  Malfunction of CF card 

Use a computer to check whether the contents of 
the CF card can be read. 

Problem  #11  Work clamp does not rise. 

Cause

Inspection/Remedy/Adjustment

Replacement if a malfunction

1. Incorrect work clamp home 

position adjustment 

Adjust the home position while referring to “7-20. 
Adjusting the home position”. 

2.  Incorrect mechanism adjustment 

Check if the movement of the work clamp arm is 
stiff. 

Work clamp arm assembly 

4888Q