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15. ELECTRIC MECHANISM
162
KE-430F, BE-438F
Error status #20 The machine does not stop at the needle up stop position. (“UP” is frequently displayed after sewing)
Probable causes Check/ repair/ adjust Parts to be replaced
1. Incorrect adjustment
Adjust while referring to "11-18. Adjusting the
home position”.
2. Problem with machine motor
operation
Refer to steps 1 to 5 in #17 Resolver stator assembly
Motor PCB assembly
Motor 430 assembly
Error status #21 SD card read/write mode cannot be activated.
Probable causes Check/ repair/ adjust Parts to be replaced
1. If “E420” is displayed, the SD card
is incorrectly inserted.
a. Check the direction of insertion of the SD
card.
(Insert the card so that it matches the direction
of the pattern on the card cover.)
b. Check the insertion of the SD card.
2. If “E420” is displayed, the SD card
is incorrectly formatted.
Check the format of the SD card.
(Carry out 16-sector formatting.)
3. Malfunction of SD card Use a PC to check if the contents of the SD card
can be read.
4. Malfunction of operation panel
See #12.
Panel PCB assembly
Panel harness
2650B