Output Check List - Brother HE-800A Service Manual
Electronic lockstitch button holer
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Also See for HE-800A:
- Manual del instrucción (122 pages) ,
- User manual (118 pages) ,
- Instruction manual (118 pages)
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6-8. Output check list
Use the following procedure when checking for PCB-related failures, mechanism breakdown, and cord breakage.
It can be checked as to whether signals that the CPU correctly output have been received.
Check code
The buzzer sounds for one second, and then the operation panel indicators and LEDs all light.
After this, numbers from "0" to "9" are displayed in the two program No. LED columns and the four
C-01
parameter display LED columns.
The buzzer sounds for one second, and then the sewing machine motor starts running at 700 rpm.
C-02
While the motor is running, a timing signal input check is carried out.
If there is an abnormality in the timing signal, E-64 is displayed.
The buzzer sounds for one second, and then the work clamp motor starts operating (sensor home
C-03
position - 13 mm).
At this time, the upper thread trimmer and lower thread trimmer operate together with the work clamp.
The buzzer sounds for one second, and then the needle zigzag motor starts operating (-3 mm - 3
C-04
mm).
C-05
The buzzer sounds for one second, and then the feed motor starts operating (-1 mm - 40 mm).
The buzzer sounds for one second, and then the feed mechanism operates for 15 mm
C-06
to the home position
turns on and off.
C-07
The buzzer sounds for one second, and then the tension release solenoid turns on and off.
The buzzer sounds for one second, and then the work clamp moves to the upper thread trimming
position (position [6] for the operation procedure in "1-10. Upper thread trimmer mechanism").
C-08*
When the treadle is depressed forward again to the 2nd step [C], the work clamp moves to the home
position.
Note: If the work clamp is not at the home position, the check code cannot be changed.
The buzzer sounds for one second, and then the work clamp lifts by 13 mm.
When the treadle is depressed forward again to the 2nd step [C], the work clamp moves to the home
C-09
position.
Note: If the work clamp is not at the home position, the check code cannot be changed.
* This function can be used to make fine adjustments to the position of the work clamp. (Refer to "4-14-5.
Adjusting the cutting depth of the upper thread scissors".)
4377Q
4378Q
→
then the cutter solenoid turns on and off
HE-800A
6. ELECTRIC COMPONENTS AND SOFTWARE
1. Turn on the power while pressing the parameter
DOWN key (1).
* All mode indicators will switch off, [ _ _ ] will be
displayed in the program No. LED (2) and [ _ _ _
_ ] will be displayed in the parameter display
LED (3).
2. Depress the treadle to the 2nd step [C].
* The machine will start to detect the home
position, and then output check mode will start.
* The check code will appear in the parameter
display LED (3).
3. Press the parameter keys (1) and (4) to select the
desired check code.
4. Depress the treadle to the 2nd step [C].
The operation corresponding to the check
code will be carried out while the treadle is
being depressed forward (each time the
treadle is depressed forward for check codes
C-08 and C-09).
5. When returning to normal operation, turn power
off and then on again.
Function
→
→
then moves
then the cutter return solenoid
147
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