Brother HE-800B Service Manual page 146

Error status #9 Work clamp does not rise during home position detection.
Probable causes
1. Incorrect work clamp home position
adjustment
2. Incorrect mechanism adjustment
Error status #10 Work clamp does not drop during threading mode.
Probable causes
1. Incorrect work clamp home position
adjustment
2. Incorrect mechanism adjustment
Error status #11 The THREAD indicator does not illuminate during threading mode.
Probable causes
Malfunction of panel PCB
Error status #12 Zigzagging does not move slowly one stitch at a time during test feeding.
Probable causes
1. Malfunction of foot switch and cord
2. Malfunction of zigzag mechanism
Error status #13 The feed mechanism does not move slowly one stitch at a time during test feeding.
Probable causes
1. Malfunction of foot switch and cord
2. Malfunction of feed mechanism
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Check/ repair/ adjust
a. Adjust the home position while referring to
"7-2. Adjusting the home position".
b. Check if the work clamp is touching something
else.
Check if the work clamp mechanism, upper
thread trimming mechanism and lower thread
trimming mechanism are moving stiffly.
Check/ repair/ adjust
a. Adjust the home position while referring to
"7-2. Adjusting the home position".
b. Check if the work clamp/button clamp is
touching anything.
Check if the work clamp mechanism, upper
thread trimming mechanism and lower thread
trimming mechanism are moving stiffly.
Check/ repair/ adjust
Check that connector P3 (PANEL) is connected to
the motor PCB, and that connector P1 (MAIN) is
connected to the panel PCB.
Check/ repair/ adjust
See #4.
See #6.
Check/ repair/ adjust
See #4.
See #7.
HE-800B
9. ELECTRIC MECHANISM
Parts to be replaced
Parts to be replaced
Parts to be replaced
LCD panel PCB assembly
Panel harness
Parts to be replaced
Parts to be replaced