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8. ELECTRICAL MECHANISM
127
BAS-311G, BAS-326G
Problem #4 Panel keys do not work.
Cause Inspection/Remedy/Adjustment Replacement if a malfunction
Malfunction of panel P.C. board
Check that connector P1 (PANEL) is inserted
into the main P.C. board, and that connector
CN2 (MAIN) is inserted into the panel P.C.
board.
Panel P.C. board
Panel harness
Problem #5 The work clamp does not return to the home position when the foot switch is depressed.
Cause Inspection/Remedy/Adjustment Replacement if a malfunction
1. Malfunction of treadle unit
With connector P6 (FOOT) inserted into the main
P.C. board, turn on the power and then measure
the voltages between pins 2-3 at the cord-side
connector. (No. 2 +, No. 3 −)
OK if the voltage is approximately 2 V at neutral
and approximately 4 V when the foot switch is
depressed as far as it will go.
Treadle unit
2. Malfunction of two-pedal foot
switch
Disconnect connector P6 (FOOT) from the main
P.C. board, and check the continuity between
pins 5-6, 7-8 and 8-9 at the cord-side connector.
OK if normally ∞ Ω, and 0 Ω when the foot switch
is depressed.
Foot switch
Foot switch cord assembly
Problem #6 Home position is incorrect.
Cause Inspection/Remedy/Adjustment Replacement if a malfunction
Incorrect home position adjustment Switch to home position adjustment mode, and
adjust the position of the home position dog.
(Refer to “7-20. Adjusting the home position”.)
5086Q
5087Q
Work clamp
(Second
position)
Work
clamp
Start