JUKI LK-1900B series - Page 108

–94–
4) SDC board (asm.)
 Performthegenerationofpowersupplyandthecontrolofsewingmachinemainmotorinresponsetoan
instructionfromMAINboard.
No.
Connectorand
othername
Connectiondestination,name Remarks
❶
CN10 Not used
❷
CN11 MAINboardsignal
❸
CN12 FM1 Not used
❹
CN13 MAINboardpowersupply1
❺
CN14 Jumperconnector For100Vswitching
(Caution)
❻
CN15 Mainmotorencoder
❼
CN16 Powerinput
❽
CN17 Mainmotorpower
❾
CN31 MAINboardpowersupply2
󱢳
DipSW2-1 Not used GenerallyOFF
DipSW2-2 Not used GenerallyOFF
DipSW2-3 Not used GenerallyOFF
DipSW2-4 Not used GenerallyOFF
󱢴
F1 4Atime-lagfuse For85V...Notbereplaced(Directmounting)
󱢵
F2 2Afast-blowtypefuse For24Vfuseholder
󱢶
F3 20Atime-lagfuse ForACinput...Notbereplaced(Directmounting)
󱢷
F4 20Atime-lagfuse ForACinput...Notbereplaced(Directmounting)
(Caution) When connecting the jumper connector, it becomes the voltage doubler rectier circuit.
At this time, the power input must be AC100 to 120V.
❻❼ ❽󱢵󱢷
❷
❸❹
󱢴
❺
󱢶
❶
❾
󱢳