Brother Z-8550A Service Manual page 29

Treadle unit and standing operation pedal operation
Operation block
Forward depression - ON
Forward depression - ON
st
Treadle
(1 step - ON is when DIP
unit
switch No. 2 is ON)
Backward depression to
st
1 step - ON
Backward depression
- ON
High-speed switch
- ON
Low-speed switch
- ON
Standing
operation
Thread trimming switch
pedal
- ON
Presser foot Switch
- ON
Solenoids (only enable for EZ - 40 panel)
Operation block
End backtack key
Continuous backtack key
Start backtack key
Fixed stitch/name label key
P1 key
P2 key
Operation panel
indicator block
Forward depression ON signal position
Plain zigzag LED
Depress the treadle unit forward.
Presser foot ON signal position
3-step zigzag LED
Depress the treadle unit forward gently.
Presser foot ON signal position
Scallop left LED
Depress the treadle backward gently.
Backward depression ON signal position
Scallop right LED
Depress the treadle backward firmly.
High-speed switch ON signal position
Plain zigzag LED
Turn on high-speed switch for standing operation pedal.
Low-speed switch ON signal position
CF LED
Turn on low-speed switch for standing operation pedal.
Thread trimming switch ON signal position
Scallop right LED Turn on thread trimming switch for standing operation
pedal.
Presser foot switch ON signal position
Slow start icon
Turn on presser foot switch for standing operation pedal.
Thread trimmer solenoid operates.
Thread wiper solenoid operates.
Quick reverse solenoid operates.
Presser foot solenoid operates.
Upper thread feeding solenoid operates.
Option solenoid operates.
Z-8550A, 8560A
3. FUNCTION SETTINGS
Operating details
20