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8. ELECTRICAL MECHANISM
126
BAS-311G, BAS-326G
Problem #2 When the power is turned on, nothing is displayed in the PROGRAM No. display or the menu display.
Cause Inspection/Remedy/Adjustment Replacement if a malfunction
Control program does not operate.
Insert a CF card containing the control program,
turn on the power switch and update the program
version. (Refer to “3-11. Updating the control
program”.)
Main P.C. board
Problem #3 When the power is turned on, an error code is displayed.
Cause Inspection/Remedy/Adjustment Replacement if a malfunction
1. If [E025] or [E035] is displayed,
the foot switch is still depressed.
1) Check if the foot switch is still depressed.
2) Check if there is a harness short-circuit.
3) Check that connector P6 (FOOT) is inserted
into the main P.C. board.
Treadle unit
Two-pedal foot switch
2. If [E055] is displayed, there is a
malfunction of the machine head
switch.
1) Check that the machine head switch is OFF.
2) Check if there is a harness short-circuit.
3) Check that connector P9 (HEAD-SW) is
inserted into the main P.C. board.
Machine head switch
3. If [E065] is displayed, one of the
keys on the operation panel is
still depressed.
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
4. If [E403] is displayed, there is a
poor connection between the
main P.C. board and the PMD
P.C. board.
1) Check that connector P17 (M-MOTOR) is
inserted into the main P.C. board, and that
connector P6 (MAIN) is inserted into the
power supply motor P.C. board.
2) Check if there is a harness short-circuit.
Harness
Power supply motor P.C.
board
Main P.C. board
5. If [E401] is displayed, there is a
poor connection between the
main P.C. board and the power
supply motor P.C. board.
1) Check that connector P1 (MAIN) is inserted
into the power supply motor P.C. board.
2) Check if there is a harness short-circuit.
Main P.C. board
6. If [E450] or [E452] is displayed,
the machine head memory
cannot be verified.
1) Check that connector P3 (HEAD-M) is
inserted into the power supply motor P.C.
board.
2) Check if there is a harness short-circuit.
Machine head memory
7. If [E700] is displayed, there is an
abnormal rise in the power
supply voltage.
1) Check that the power supply voltage at the
wall outlet is within the range of the
specification voltage +/- 10%.
2) Refer to check items #1-2 and #1-3.
8. If [E705] is displayed, there is an
abnormal drop in the power
supply voltage.
1) Check that the power supply voltage at the
wall outlet is within the range of the
specification voltage +/- 10%.
2) Refer to check items #1-2 and #1-3.
9. If [E740] is displayed, there is a
malfunction of the cooling fan.
1) Check if there are any thread scraps blocking
the cooling fan.
2) Check that connector P22 (FAN) is inserted
into the main P.C. board.
DC fan motor assembly