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不良現象，其原因以及解決方法
現象 Phenomenon
1. 切刀刀刃不良
Blade of the trimmer
1.
defective
2. 斷線檢測不良
(1) 線沒被切斷機械卻停止 ( 控
制板表示燈燈亮 )
(2) 線斷了卻不停機 ( 操作面
板表示燈燈滅 )
2.Thread detector defective
(1)Machine stops without
cutting the thread. (Control
board indicator lamp lights
up. )
(2)Machine wouldn't stop
even thread break.
(Control board indicator
lamp lights off.)
斷線檢測確認燈
Thread break detect
checking lamp
控制基板 ( 主基板 )
Control Board
(Main Board)
針下信號確認燈
Under needle
checking lamp
P29
DEFECTIVE PHENOMENA'S
REASON AND SOLUTIONS
原因 Reasons
a. 固定切刀的裝置不良 P13「1. 切刀」
的項目中，S 與 K 的尺寸過小
b. 切刀彈簧壓力不足
c. 刀刃耗損
a. Device which fixed trimmer
defective. P13 In item 「1.Trimmer」 ,
size of S and K too small.
b. Pressure of trimmer's spring not
enough.
c. Blade consumes.
( 用手慢慢的轉動斷線檢測器中的編碼
器的皮帶輪，當基板一的確認燈 LD3
燈滅時 )
a. 線的穿線方法錯誤
b. 縫製時發生斷線
( 用手慢慢的轉動斷線檢測器中編
碼器的皮帶輪，當基板上的確認燈
LD3 燈滅時 )
c. 編碼器不良
( 縫紉機動作中，基板上的確認燈
LD4 燈滅時 )LK-1900A 的感線線斷
線 ( 參照 P23 配線圖 )
(Use hands to roll the belt roller of the
encoder in the thread device slowly
while the checking lamp LD3 of the
board 1 lights off.)
a. Wrong threading method.
b. Thread break while sewing.
(Use hands to roll the belt roller of
the encoder in the thread device
slowly while the checking lamp
LD3 of the board 1 lights off.)
c. Encoder defective.
(The checking lamp LD4 of the
board lights off while sewing
machine operating.)
Thread detector of LK-1900A
thread break. (Refer to P23 Wiring
picture.)
對策 Strategies
a. 參照 P13 中「1. 切刀」的
S 項目，調整固定刀具，
將 K 的尺寸調整適當
b. 參照 P13 中「1. 切刀」的
b 項目，將刀具的束環調
整適當
c. 研磨切刀，或是更換新品
a. Refer to P13 item S
「1.Trimmer」, adjust the
fixed knife, adjust the size
of K properly.
b. Refer to P13 item b
「1.Trimmer」,adjust the
ring of knife properly.
c. Grind the trimmer or
replace the new one.
a. 參照 P3 「4. 穿線」
b. 調整縫紉機穿線
c. 交換編碼器
a. Refer to P3
「4.Threading」
b. Adjust the sewing
machine threading
c. Change the encoder
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