Chapter 5 ERROR LIST & TROUBLESHOOTING
5-2
BC-4000 Service Manual No. 085-6693-02
5.2
TROUBLE SHOOTING
Phenomenon
Cause
Measures
Power is not supplied.
1. Power supply plug has
loosened.
2. The fuse has blown out.
3. Main board is defective.
4. Power supply unit is defective.
5. Power switch is defective.
1. Insert the plug again.
2. Replace the fuse.
3. Check the main board, and
replace it.
4. Check the power supply unit,
and replace it.
5. Check the power switch, and
replace it.
Test Mode is entered
directly after the power
has been turned OFF.
1. Main board is defective.
2. Key sheet is defective.
1. Check the main board, and
replace it.
2. Check the key sheet, and
replace it.
Machine does not stop
operation after “TEST” is
displayed.
1. Load cell is defective.
2. External vibration
3. A/D board is defective.
4. Main board is defective.
5. Power supply unit is defective.
1. Adjust the load cell, and replace
it
2. Change the installation to a
vibration-free place.
3. Check the A/D board, and
replace it.
4. Check the main board, and
replace it.
5. Check the power supply unit,
and replace it.
Weight error occurred.
1. Limit stopper screw hits
something.
2. There is a foreign object under
the load cell.
3. A/D board is defective.
4. Load cell is defective.
5. Main board is defective.
1. Adjust the limit stopper screws.
2. Remove the foreign body.
3. Replace the A/D board.
4. Adjust the load cell, and replace
it.
5. Check the main board, and
replace it.
A specific program
cannot be displayed.
1. Machine connection error
2. Main board is defective.
3. Display board is defective.
1. Check the machine connection.
2. Check the main board, and
replace it.
3. Check the display board, and
replace it.
A key doesn't work.
1. Key sheet is defective.
2. Machine connection error
1. Check the key sheet, and
replace it.
2. Check the machine connection.
Registration data has
changed.
1. Battery is defective.
2. Main board is defective.
3. Influence of external noise
1. Replace with a new battery.
2. Check the main board, and
replace it.
3. Change the installation to a
noise-free place.
Display disappears all
while operating.
1. Power-supply voltage fluctuation
2. Power supply unit is defective.
3. Display board is defective.
4. Main board is defective.
1. Confirm the power-supply
voltage.
2. Confirm the power supply unit,
and replace it.
Summary of Contents for BC-4000
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