Folding Clamp Is Not Raised (1) Pulse Motor Stepping Sound Cannot Be Heard - Brother LH4-B800E Service Manual

5-15. Folding clamp is not raised (1) Pulse motor stepping sound cannot be heard

Cause
Presser foot Check the presser foot
height setting height setting.
Presser foot Cord connection
lifter pulse
motor
Presser lifter pulse
motor gear
Check
Change the settings of
memory switch Nos.
04., 05. and 06..
Check the cord
connections and
contacts.
Check for loose gear
set screw.
Solution
LH4-B800E
5. Troubleshooting guide
page
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(Instruction)
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5 - 15