2024年11月22日
施乐027复印机故障维修六例
?? ????027?????ú?????????ù?? ?????????????ó???ú?÷?????¤×÷???????°L8?±×??????? ????????·??????°L8?±×????????????????¨???§???????????????¨???§??????×è?ì???????¨???§????????50????????????????? ?????????????????ó???????¨???????????????????±?ú?÷?????°E3??3?±×???????????????·??????ì???????????ó??°????????????????????????¤????????????????×????????????¤???????ò?±???±???????ì?é????????×???·???????????????·?????×??ò????????????×?(????·????????±?÷???ú??????????????????????×????????ú×????????????×????????è?¨????????×??????????÷????°??ù???????????ì?é????·???×é???°?à?????·???????é???????÷?¨??×è???????ì?é?????????÷?°
????·???????·??????????????????????????ù??????·??????×?????ú??·???????·?????×????????????ú??10??2??°??????ü??????·???????×???????????×??????????ò??±í??P4??13????????24V DC(???±????0V DC)?????÷?÷????°???????????????/??·?????×?????????????±?·?±????÷????°???U41(7406N)5??????????????????????±??????±??6???????±??·??????????????????????ò???????¨U41???????ü??U41?ó???????????????±???·????7406N?????????±????????74LS06?ú?????????í??????XEROX1027???????á??????????·??????????????ú?ù???????±?÷?¤×÷????×÷????????????·???????????????????????24V DC??????????????24V DC???????????ú????????????????????24V DC??????????24V DC?????? ?????????????????ó???????·?°????2mm??3mm????????????????·????????????????ó???????????????ì???????????ó·??ú???÷?????ò?????????????????¨???????????·°??????ù???ù??°×????????±??ê???????????ì?é???à??????????/??±??????????°?????·???????????????????????×???ò?????¨???§?????????¨???????????·°????????????????????à?????????ó?????????????ó?????????ú??9??2???ò???°?????????·???¤?????¨??????????
°??????ü??·???????/??±?????????????????????????????×??????????ò??±í??P3??33??37?÷???????ù??0V DC???????????ò????????????????????/??±????????????·°??????????·°?×°??????×é??????????????°??????????ì?é???????·°????????¤???·???????ü???????·°??ó???????????? ?????????????????ó?????ú????????×÷???????????ú??????????·??????ì?????ú???ó?????ò???à???????????????????????????????????????ò???ü???·???·???ì??????????×???±??¤???????é?????????ú?óCR4??CR5???????????÷????????????????24V DC????5V DC??????·??òCR4??CR5??±????¨??×??????????÷????°?×??????·?????ò?????í?÷?¤×÷????????????·????·?÷????U1(D7810CW?????í?÷)??U2??U3(?????°?ú?ú???ú?÷????U2??U3??27128???ó???ú?ú???ú?÷??????????27256?ú??)??U4(8417RAM)??U5(74LS373)??U12(74LS139)??U13(74LS74)??U15(RST519)??U17(74LS32)??U18(74LS11)??U19(74LS08)??U20(74HC00)??U34(74HC14)??U36(74HC14)??HY2???¤???·???????????????°???ü·??????÷??×é????????·??????????????·?ò???¤???·?????ù???ì??×??ì?§?§???ú?ú???ú???ó???????é??????CR2???ú?ó???????????????÷?????í?÷??EPROM??RAM?°×??????????·????????5
V DC????????24V DC?????????????±?ò?ú?ú???????ú??????????·??òCR2???ú?ó?????????ò????????·??????·???????????ì?é?????????????????ò???ú?÷?ó???????ú???ìCR4??CR5??CR2????·????????????????á?????????á??????????CR4??CR5???????????÷????????????????24V DC????5V DC??????????CR2?????ú???????????????ó???????ò???÷×??????·?????????í?????????ú?ó??CR4??CR5?ù???????????÷??????????????????????????·?±??????????é??????????????·?·¨?????????????ú?óCR4??CR5??????CR2???ú??????????????×??????·?????????????ì???·?¨???????í?÷???????????????§???·?????????×????U18????6???????ì?????????±???????????????????????????????????·±?U20??U17???????°?á???????????¨???????í?÷?¤×÷???????ò????????????U18??6???????ì?????á?????????????????ò???÷?????í?÷?????§???·???????????ó????U19????11???????ì?????á?????????????????????±????????????????12??????????????????????????13?????¨??????????????????????????????U39??3???????????????÷U39??????????U12??5????????????????????????????????1??2??3?????????????????????????????????????????÷U12??5?????????????????????¨
??U12???????ü??U12(74LS139)?ó???ú???ú?÷???????????¤×÷?????????????ú?ó??CR4??CR5?ù???????????????????????×?????????ì?é·???????·???????·??§??·??ò?????????????????ú?????ü?ú?÷???ù???????????·°??à?????????à???????¤??·??§?à???í?????????????±?????ú?÷????×÷???????????????á??????×??????????ò??????????·???????·??§???????????????????§??·??????¨????×??????????????????????????·????????·??§?????·?·¨????°????÷????°??????????????????????ù?????·?????ú???ì?÷????°?????????????·???????????·????????????????ò???÷?????????????????????????ú?÷???·?????????·????·??ò?????????????????????????????????÷????°?????????????×÷?????????ì?é???????????????????????÷????°????????????ú???????????????ì???????????????ò???÷????????????????·??ò???÷?÷????°????????????????·?????????÷????°??????????????·?????à??????????????????±???C7?òC25?÷???????ò?????÷????°??????????????·????????????????????????????????????????ú?÷???·?????????·??×÷????????br> ????1???????????????????????????????????????????ù???à?ê?????????ù????????????????°???CR5(C93??02)???÷
?é?òQ2(C3261)???????÷?????????????????????ó???à????????????±??¤?????????ü?????????ó??????????????×?????????????????°??????????ù?ì????±????ú??????±??¨???ó???ì????24V DC???·???ò?????????×?????ú???????ò???·???????·????????2???ú?÷???·?????????·???????????÷????°?????????°??÷????°????°???ü????????°??????????????????????????ú?ó?÷????°?????CR4??CR5?????????÷???????????÷????°??¤×÷?????????ú???×????????×÷??°???????????P/J2?????ú??°????????????ó???????¨???ü?????????????¨???????ú?????????ì??°???·????ù???????±???¨P/J46?????·???ú?±??°??????????ò?????¨???·????????P/J46?à?????????°???????????ì?é·??????·????????/??±?????????????°????????????·???ó???ú?÷?????????¤×÷?? ?????????????????ó???????·?????????×????????????·??????????·?????????×????????????????????°??????§???????????????°?????????°?ì×??ó???????????§?§?????????¤????????±í?????????????????á???????????????????????????????????????????????????ò???????????ì?é?????????????????????×???????·?????????à???ü???????????????????????ó?????????ó???????°?÷???ì??·
??????????§?§???ü???????ó????????????×?????1???ü???????°?????¨??°??§?§??????????????·??ò???????????ü???????????ò???ò?ü????2????·?????????????????????·???·??ò?á?°?ì?????????ü?????????????????°???ü?????·?????????? ???????ù?????????ó??100???????±???????·????×??ò???¤??·??é??????????·??????ù??????1027?????ú?¤×÷???í????????×????????¨???????÷???ú??×????????¨??????????×??ò·??ó/?????????????¨?è????????±????????????¨????±????????ú×????????????????????ú???????????ù????24V DC????????×???·??ò????×????????¨???÷???·°??°?÷×????·°??????????????????ú????????????????×é???????????ò????????????·????ò???????????????????????????????ó????·????????????????????ò?????????ú???????????????¨?????ò???÷???ú???????????????¨?????ò???????????????ú???÷???ú×é???°?à?????·?????????ì?é????????·??????é??·?±?????????????·?·¨????????????????1?????????ú???????????????¨?????ù?????????ó?????????????????ú???·°??¤×÷???????????????????÷???·°????????????ú???????????÷???·°???·??????????????????÷???·°??????????????????????????ú???·°???1???????ú?
¤×÷??5V DC?±????????P3??20??2?????¨?è(H)??5V DC??????????(L)??5V DC??P3??26??3???????ú????(L)??5V DC??P3??25??4??????????????P3??18???????????????ú?¤×÷??5V DC?±???????????????ú???·°????ù×??±?????????????????????????????????????¤×÷·??????????á?ò???????????ì???????·????±????¤???ó???ò???????×???????????????ì???????ú?÷?????¤×÷×????????±????????±?????P3??20???á??????????????????????????5V DC???????????÷?÷???·°???U30??14?????????????????ù?????ú?÷?????¤×÷×????????±????U30??6???????ì?????á?????????????????????????????÷U30?????????????????ü????????(74LS244)?ó????????????????2???÷???ú???????????????¨?????÷???ú?????ú???÷?????????????ù???????????????à?????????????????¤×÷×??????????÷???ú???·°????????????÷??????·??????????ó?????????????????????????±?????ó???÷?????÷???ó???÷?¤×÷×??????????????????????????????????·???ò?????????ì?é?÷???ú???·°?????????·????÷???ú???ò??×??±???????÷?÷?ò??????24V DC?úQ8?úD7?úP16??4?ú?÷???ú?úP16??5?úD8?úQ11?úR55?úGND????×???????×????ì?é???±?ì?é??Q11?±????E??C?????·?????§???????????????????ü??Q11
(D1608)?ó????????????D1608??????????(??????????P??50W??I??8A??U??80V)???????????×?ò???????????ü?????à???ò???ü?????????????ú????