Brother S-7300A Service Manual page 35

List of check items
Item
Check details
No.
Treadle input value(Voltage display)
IN-01
Depression status is also displayed
Upper shaft rotation angle
IN-02
(0° at highest needle bar position)
Encoder count of feed motor
IN-03 (Position when power is turned on is
0)
IN-04 Needle up signal status
IN-05 Needle down signal status
Power incoming voltage
IN-06
100 V: Display value ÷ 2 is the actual voltage
400 V: Display value × 2 is the actual voltage
IN-07 Head safty switch
IN-08 X-over seam thickeness sensor
IN-09 Hand switch A
IN-10 Hand switch B
Knee switch or presser foot switch of
IN-11
standing up pedal
IN-12 Speed input from standing up pedal
High speed switch of standing up
IN-13
pedal
IN-14 Trimming switch of standing up pedal
Slow speed switch of standing up
IN-15
signal
IN-16 Menu key
IN-17 Home key
IN-18 Half stitch key
IN-19 Main motor overheating sensor
IN-20 Feed motor overheating sensor
IN-21 Option input (IN1）
IN-22 Option input (IN2）
IN-23 Option input (IN3）
Panel display
Input status
(Min. value - Max. value)
0.000 ～ 5.000V
0 ～ 359°
－999 ～ 999
ON / OFF
ON / OFF
***V
ON / OFF
0.00 ～ 9.99mm
OFF ～ 7
(OFF,1 ～ 7)
OFF ～ 2
(OFF,1,2）
ON / OFF
0.000 ～ 5.000V
* Around 0 V when
disconnected
ON / OFF
ON / OFF
ON / OFF
ON / OFF
ON / OFF
ON / OFF
0.000 ～ 3.300V
0.000 ～ 3.300V
ON / OFF
ON / OFF
ON / OFF
S-7300A
3. FUNCTION SETTINGS
Judgment
Reversed: Around Depress the treadle.
1 V
Neutral: Around 2
V
Depressed:
Around 3.8 V
Turn the pulley by hand.
Positive in the
direction of the
arrow
Positive in the Move the feed link by
clockwise rotation hand.
direction
ON within the Turn the pulley by hand.
range of 25° to 75°
ON within the Turn the pulley by hand.
range of 195° to
245°
Within ±10% of
power supply
voltage
OFF when tilted
Tilt the panel.
back
Increases when Raise and lower the
the presser foot is presser foot.
raised
Changes within
the range given at Press hand switch A.
left
Changes within
the range given at Press hand switch B.
left
Press the knee switch or
the presser foot switch of
ON when pressed
the standing operation
pedal.
Press the standing
--- operation pedal high
speed switch.
Press the corresponding
ON when pressed
switch.
Press the corresponding
ON when pressed
switch.
Press the corresponding
ON when pressed
switch.
ON when pressed Press the menu key
ON when pressed Press the home key
ON when pressed Press the half stitch key
Drops when the
temperature rises.
Drops when the
temperature rises.
---
ON when input is
0 V
ON when input is ---
0 V
ON when input is ---
0 V
Checking method
24