Brother HE-800B Service Manual page 150

Error status #18 Needle bar does not stop at the needle up position ("UP" is frequently displayed after sewing)
Probable causes
1. Incorrect adjustment
2. Problem with upper shaft motor
operation
Error status #19 SD card read/write mode cannot be activated.
Probable causes
1. If error E422 or E425 is displayed,
the SD card is inserted incorrectly.
2. If "E424" is displayed, the SD card
is incorrectly formatted.
3. Malfunction of SD card
4. Malfunction of operation panel
141
Check/ repair/ adjust
Adjust while referring to "7-2. Adjusting the home
position".
Refer to steps 1 to 5 in #16
Check/ repair/ adjust
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.
2650B
Check the format of the SD card.
(Carry out 16-sector formatting.)
Use a PC to check if the contents of the SD card
can be read.
See #12.
HE-800B
9. ELECTRIC MECHANISM
Parts to be replaced
Resolver stator 800 assembly
Motor PCB assembly 800B
Motor 800 assembly
Parts to be replaced
LCD panel PCB assembly
Panel harness