Sharp LC-24LS240EXK (serv.man2) Service Manual ▷ View online
29
LC-24LS240
1&4S[IV1EREKIQIRX[MXL-47-47-474;
1&4S[IV1EREKIQIRX[MXL4;4;4;
30
LC-24LS240
17(;&481EMR-'
9
8LI17(;&48MW17XEVvWQSWXYTXSHEXIW]WXIQSRGLMTWSPYXMSRJSVJPEXTERIP
MRXIKVEXIHHMKMXEPXIPIZMWMSRTVSHYGXW&YMPHMRKSRXLIWYGGIWWSJ17XEVvWTVIGIHMRK73'
WIVMIWXLI17(;&48TVSZMHIWQSWXGSWXIJJIGXMZIWSPYXMSRJSV(8:ETTPMGEXMSR[MXL
GVIEXMZI ERHEXXVEGXMZIJIEXYVIWI\GPYWMZIP]TVIWIRXIHF]17XEV
8LI17(;&48MRXIKVEXIW(8:QYPXMQIHMEEPPTYVTSWI%:HIGSHIV(:&8
HIQSHYPEXSV:-*HIQSHYPEXSVERH7SYRH:MHISTVSGIWWSVMRXSEWMRKPIHIZMGI8LMW
EPPS[WXLISZIVEPP&31XSFIVIHYGIHWMKRMJMGERXP]QEOMRKXLI17(;&48EZIV]
GSQTIXMXMZIQYPXMQIHME(8:WSPYXMSR*SV%8:YWIVWXLI17(;&48TVSZMHIWQYPXM
WXERHEVHEREPSK8:WYTTSVX[MXLEHETXMZI(ZMHISHIGSHMRKERH:&-HEXEI\XVEGXMSR
8LIFYMPHMREYHMSHIGSHIVMWGETEFPISJHIGSHMRK *1%12-'%1%&87'ERH)-%.
WSYRHWXERHEVHW8LI17(;&48WYTTPMIWEPPXLIRIGIWWEV]%:MRTYXWERHSYXTYXW
XSGSQTPIXIEVIGIMZIVHIWMKRMRGPYHMRKEQYPXMTSVX,(1-VIGIMZIVERHGSQTSRIRXZMHIS
%('%PPMRTYXWIPIGXMSRQYPXMTPI\IHJSVZMHISERHEYHMSEVIMRXIKVEXIHMRGPYHMRKJYPP
7'%68WYTTSVX[MXL':&7SYXTYX8LIIUYMTTIH17XEV1%')GSPSVIRKMRIMWXLI
PEXIWXQEWXIVTMIGIJVSQ
17XEVJEQSYWGSPSVIRKMRIWIVMIWTVSZMHMRKI\GIPPIRXZMHISERHTMGXYVIUYEPMX]MR*YPP,(
ERHPEVKIWGEPIHMWTPE]MRKW]WXIQ
8SQIIXXLIMRGVIEWMRKP]TSTYPEVIRIVK]PIKMWPEXMZIVIUYMVIQIRXW[MXLSYXXLIYWISJ
EHHMXMSREPLEVH[EVIXLI17(;&48LEWERYPXVEPS[TS[IVWXERHF]QSHIHYVMRK
[LMGLERIQFIHHIH1'9GEREGXYTSRWXERHF]IZIRXWERH[EOIYTXLIW]WXIQEW
VIUYMVIH
MRXIKVEXIHHMKMXEPXIPIZMWMSRTVSHYGXW&YMPHMRKSRXLIWYGGIWWSJ17XEVvWTVIGIHMRK73'
WIVMIWXLI17(;&48TVSZMHIWQSWXGSWXIJJIGXMZIWSPYXMSRJSV(8:ETTPMGEXMSR[MXL
GVIEXMZI ERHEXXVEGXMZIJIEXYVIWI\GPYWMZIP]TVIWIRXIHF]17XEV
8LI17(;&48MRXIKVEXIW(8:QYPXMQIHMEEPPTYVTSWI%:HIGSHIV(:&8
HIQSHYPEXSV:-*HIQSHYPEXSVERH7SYRH:MHISTVSGIWWSVMRXSEWMRKPIHIZMGI8LMW
EPPS[WXLISZIVEPP&31XSFIVIHYGIHWMKRMJMGERXP]QEOMRKXLI17(;&48EZIV]
GSQTIXMXMZIQYPXMQIHME(8:WSPYXMSR*SV%8:YWIVWXLI17(;&48TVSZMHIWQYPXM
WXERHEVHEREPSK8:WYTTSVX[MXLEHETXMZI(ZMHISHIGSHMRKERH:&-HEXEI\XVEGXMSR
8LIFYMPHMREYHMSHIGSHIVMWGETEFPISJHIGSHMRK *1%12-'%1%&87'ERH)-%.
WSYRHWXERHEVHW8LI17(;&48WYTTPMIWEPPXLIRIGIWWEV]%:MRTYXWERHSYXTYXW
XSGSQTPIXIEVIGIMZIVHIWMKRMRGPYHMRKEQYPXMTSVX,(1-VIGIMZIVERHGSQTSRIRXZMHIS
%('%PPMRTYXWIPIGXMSRQYPXMTPI\IHJSVZMHISERHEYHMSEVIMRXIKVEXIHMRGPYHMRKJYPP
7'%68WYTTSVX[MXL':&7SYXTYX8LIIUYMTTIH17XEV1%')GSPSVIRKMRIMWXLI
PEXIWXQEWXIVTMIGIJVSQ
17XEVJEQSYWGSPSVIRKMRIWIVMIWTVSZMHMRKI\GIPPIRXZMHISERHTMGXYVIUYEPMX]MR*YPP,(
ERHPEVKIWGEPIHMWTPE]MRKW]WXIQ
8SQIIXXLIMRGVIEWMRKP]TSTYPEVIRIVK]PIKMWPEXMZIVIUYMVIQIRXW[MXLSYXXLIYWISJ
EHHMXMSREPLEVH[EVIXLI17(;&48LEWERYPXVEPS[TS[IVWXERHF]QSHIHYVMRK
[LMGLERIQFIHHIH1'9GEREGXYTSRWXERHF]IZIRXWERH[EOIYTXLIW]WXIQEW
VIUYMVIH
8LI17(;&48MWGSQTSWIHSJWIZIVEPQSHYPIW
,MKL 4IVJSVQERGI 1MGVSTVSGIWWSV
9PXVELMKLWTIIHTIVJSVQERGIFMX6-7''49
3RIJYPPHYTPI\9%68W
7YTTSVXW97&ERH-74TVSKVEQQMRK
(1%)RKMRI
3RIJYPPHYTPI\9%68W
7YTTSVXW97&ERH-74TVSKVEQQMRK
(1%)RKMRI
8VERWTSVX7XVIEQ(IQYPXMTPI\IV
7YTTSVXWTEVEPPIPERHWIVMEP87MRXIVJEGI[MXLSV[MXLSYXW]RGWMKREP
7YTTSVXW87MRTYXERHSYXTYXJSVI\XIVREP'-QSHYPI
1E\MQYQ87HEXEVEXIMW1FWIGJSVWIVMEPSV1&WIGJSVTEVEPPIP
KIRIVEPTYVTSWI4-(JMPXIVWERHWIGXMSRJMPXIVWJSVIEGLXVERWTSVXWXVIEQHI
QYPXMTPI\IV
7YTTSVXWEHHMXMSREPEYHMSZMHIS4'6JMPXIVW
7YTTSVXW87(1%GLERRIPJSVXMQIWLMJX
7YTTSVXW()7()7ERH%)7IRGV]TXMSRHIGV]TXMSR
7YTTSVXW87MRTYXERHSYXTYXJSVI\XIVREP'-QSHYPI
1E\MQYQ87HEXEVEXIMW1FWIGJSVWIVMEPSV1&WIGJSVTEVEPPIP
KIRIVEPTYVTSWI4-(JMPXIVWERHWIGXMSRJMPXIVWJSVIEGLXVERWTSVXWXVIEQHI
QYPXMTPI\IV
7YTTSVXWEHHMXMSREPEYHMSZMHIS4'6JMPXIVW
7YTTSVXW87(1%GLERRIPJSVXMQIWLMJX
7YTTSVXW()7()7ERH%)7IRGV]TXMSRHIGV]TXMSR
14)+:MHIS(IGSHIV
-73-)'14)+ZMHIS14$,0
%YXSQEXMGJVEQIVEXIGSRZIVWMSR
7YTTSVXWVIWSPYXMSRYTXS,(8:MT ERH7(8:
%YXSQEXMGJVEQIVEXIGSRZIVWMSR
7YTTSVXWVIWSPYXMSRYTXS,(8:MT ERH7(8:
5. Microcontroller- MSTAR(U5)
5.1. Description
31
LC-24LS240
14)+:MHIS(IGSHIV
-73-)'14)+%74ZMHISHIGSHMRK
7YTTSVXWVIWSPYXMSRWYTXS,(8:T$JTW
7YTTSVXW(MZ< ,SQI8LIEXIV ,(TVSJMPIW3TXMSREP
7YTTSVXW:'3TXMSREP*0:ZMHISJSVQEXHIGSHMRK
7YTTSVXWVIWSPYXMSRWYTXS,(8:T$JTW
7YTTSVXW(MZ< ,SQI8LIEXIV ,(TVSJMPIW3TXMSREP
7YTTSVXW:'3TXMSREP*0:ZMHISJSVQEXHIGSHMRK
,EVH[EVI .4)+
7YTTSVXWWIUYIRXMEPQSHIWMRKPIWGER
7YTTSVXWFSXLGSPSVERHKVE]WGEPITMGXYVIW
*SPPS[MRKXLIJMPILIEHIVWGERXLILEVH[EVIHIGSHIVJYPP]LERHPIWXLIHIGSHI
TVSGIWW
7YTTSVXWTVSKVEQQEFPI6IKMSRSJ-RXIVIWX63-
7YTTSVXWJSVQEXW8
7YTTSVXWWGEPMRKHS[RVEXMSW
7YTTSVXWTMGXYVIVSXEXMSR
7YTTSVXWFSXLGSPSVERHKVE]WGEPITMGXYVIW
*SPPS[MRKXLIJMPILIEHIVWGERXLILEVH[EVIHIGSHIVJYPP]LERHPIWXLIHIGSHI
TVSGIWW
7YTTSVXWTVSKVEQQEFPI6IKMSRSJ-RXIVIWX63-
7YTTSVXWJSVQEXW8
7YTTSVXWWGEPMRKHS[RVEXMSW
7YTTSVXWTMGXYVIVSXEXMSR
287'4%07)'%1 :MHIS (IGSHIV
7YTTSVXW287'1287'.287'4%0&
(+,12-2G ERH7)'%1WXERHEVHW
%YXSQEXMGWXERHEVHHIXIGXMSR
1SXMSREHETXMZI(GSQFJMPXIV
*MZIGSRJMKYVEFPI':&7 ='7ZMHISMRTYXW
7YTTSVXW8IPIXI\X'PSWIH'ETXMSREREPSK''EREPSK''HMKMXEP''
HMKMXEP''
:GLMTERH7'8)
(+,12-2G ERH7)'%1WXERHEVHW
%YXSQEXMGWXERHEVHHIXIGXMSR
1SXMSREHETXMZI(GSQFJMPXIV
*MZIGSRJMKYVEFPI':&7 ='7ZMHISMRTYXW
7YTTSVXW8IPIXI\X'PSWIH'ETXMSREREPSK''EREPSK''HMKMXEP''
HMKMXEP''
:GLMTERH7'8)
1YPXM7XERHEVH8:7SYRH4VSGIWWSV
7-*EYHMSHIGSHMRK
7YTTSVXW&87'%)-%.HIQSHYPEXMSR
7YTTSVXW2-'%1*1%1HIQSHYPEXMSR
7YTTSVXW1871SHI1SRS7XIVIS7%4MR&87' )-%.QSHI
7YTTSVXW1SRS7XIVIS(YEPMR%2-'%1QSHI
&YMPXMREYHMSWEQTPMRKVEXIGSRZIVWMSR76'
%YHMSTVSGIWWMRKJSVPSYHWTIEOIVGLERRIP MRGPYHMRKZSPYQIFEPERGIQYXIXSRI
)5ZMVXYEPWXIVISWYVVSYRHERHXVIFPIFEWWGSRXVSPW
%HZERGIHWSYRHTVSGIWWMRKSTXMSRWEZEMPEFPIJSVI\EQTPI767&&)
57SYRH%YH]WWI]
7YTTSVXWHMKMXEPEYHMSJSVQEXHIGSHMRK
7YTTSVXW&87'%)-%.HIQSHYPEXMSR
7YTTSVXW2-'%1*1%1HIQSHYPEXMSR
7YTTSVXW1871SHI1SRS7XIVIS7%4MR&87' )-%.QSHI
7YTTSVXW1SRS7XIVIS(YEPMR%2-'%1QSHI
&YMPXMREYHMSWEQTPMRKVEXIGSRZIVWMSR76'
%YHMSTVSGIWWMRKJSVPSYHWTIEOIVGLERRIP MRGPYHMRKZSPYQIFEPERGIQYXIXSRI
)5ZMVXYEPWXIVISWYVVSYRHERHXVIFPIFEWWGSRXVSPW
%HZERGIHWSYRHTVSGIWWMRKSTXMSRWEZEMPEFPIJSVI\EQTPI767&&)
57SYRH%YH]WWI]
7YTTSVXWHMKMXEPEYHMSJSVQEXHIGSHMRK
14)+14)+0E]IV---
14(SPF](MKMXEP%'
%%'0'
7YTTSVXW3TXMSREP (SPF](MKMXEP4PYW(SPF]Q4YPWIERH17QYPXMWXVIEQ
HIGSHIVMRGPYHMRK(SPF](MKMXEP)RGSHIVJSVXVERWGSHMRKWXVIEQWXS(SPF](MKMXEP
(('3
7YTTSVXW14)+%YHMS(SPF] (MKMXEP(SPF](MKMXEP4PYWJSVQEX%(%YHMS
(IWGVMTXMSR
7YTTSVXW4:6ERHXMQIWLMJXMRK
(('3
7YTTSVXW14)+%YHMS(SPF] (MKMXEP(SPF](MKMXEP4PYWJSVQEX%(%YHMS
(IWGVMTXMSR
7YTTSVXW4:6ERHXMQIWLMJXMRK
%YHMS -RXIVJEGI
3RI7-*EYHMSMRTYXMRXIVJEGI[MXLQMRMQEPI\XIVREPWE[JMPXIVW
*SYV06EYHMSPMRIMRTYXW
8[S06SYXTYXWJSVQEMRWTIEOIVWERHEHHMXMSREPPMRISYXTYXW
7YTTSVXWWXIVISLIEHTLSRIHVMZIV
*SYV06EYHMSPMRIMRTYXW
8[S06SYXTYXWJSVQEMRWTIEOIVWERHEHHMXMSREPPMRISYXTYXW
7YTTSVXWWXIVISLIEHTLSRIHVMZIV
32
LC-24LS240
-7HMKMXEPEYHMSMRTYX
SYXTYX
74(-*HMKMXEPEYHMSSYXTYX
,(1-EYHMSGLERRIPTVSGIWWMRK
4VSKVEQQEFPIHIPE]JSVEYHMSZMHISW]RGLVSRM^EXMSR
74(-*HMKMXEPEYHMSSYXTYX
,(1-EYHMSGLERRIPTVSGIWWMRK
4VSKVEQQEFPIHIPE]JSVEYHMSZMHISW]RGLVSRM^EXMSR
%REPSK 6+& 'SQTPMERX -RTYX 4SVX
8LVIIEREPSKTSVXWWYTTSVXYTXS4
7YTTSVXW4'6+&MRTYXYTXS7<+%$,^
7YTTSVXW,(8:6+&=4F4V='F'V
7YTTSVXW'SQTSWMXI7]RGERH73+7]RGSR+VIIR
%YXSQEXMGGSPSVGEPMFVEXMSR
%:PMROWYTTSVX
7YTTSVXW4'6+&MRTYXYTXS7<+%$,^
7YTTSVXW,(8:6+&=4F4V='F'V
7YTTSVXW'SQTSWMXI7]RGERH73+7]RGSR+VIIR
%YXSQEXMGGSPSVGEPMFVEXMSR
%:PMROWYTTSVX
%REPSKYI 6+& %YXS'SRJMKYVEXMSR
(IXIGXMSR
%YXSMRTYXWMKREPJSVQEXERHQSHIHIXIGXMSR
%YXSXYRMRKJYRGXMSRMRGPYHMRKTLEWMRKTSWMXMSRMRKSJJWIXKEMRERHNMXXIVHIXIGXMSR
7]RG(IXIGXMSRJSV,:7]RG
%YXSXYRMRKJYRGXMSRMRGPYHMRKTLEWMRKTSWMXMSRMRKSJJWIXKEMRERHNMXXIVHIXIGXMSR
7]RG(IXIGXMSRJSV,:7]RG
(:-,('4,(1- 'SQTPMERX -RTYX 4SVX
8[S,(1-(:--RTYXTSVXW
,(1-'SQTPMERX
,('4'SQTPMERX
1,^$4,^MRTYX[MXLFMX (IITGSPSVWYTTSVX
')'WYTTSVX
7MRKPIPMRO(:-GSQTPMERX
6SFYWXVIGIMZIV[MXLI\GIPPIRXPSRKGEFPI WYTTSVX
,(1-'SQTPMERX
,('4'SQTPMERX
1,^$4,^MRTYX[MXLFMX (IITGSPSVWYTTSVX
')'WYTTSVX
7MRKPIPMRO(:-GSQTPMERX
6SFYWXVIGIMZIV[MXLI\GIPPIRXPSRKGEFPI WYTTSVX
17XEV %HZERGIH 'SPSV )RKMRI 17XEV%')
FMXMRXIVREPHEXETVSGIWWMRK
*YPP]TVSKVEQQEFPIQYPXMJYRGXMSRWGEPMRKIRKMRI
*YPP]TVSKVEQQEFPIQYPXMJYRGXMSRWGEPMRKIRKMRI
2SRPMRIEV ZMHIS WGEPMRK WYTTSVXW ZEVMSYWQSHIWMRGPYHMRK4ERSVEQE
7YTTSVXW H]REQMG WGEPMRK JSV :'
,MKL5YEPMX](8:ZMHISTVSGIWWSV
( QSXMSR ZMHIS HIMRXIVPEGIV [MXL QSXMSR SFNIGX WXEFMPM^IV
)HKISVMIRXIHHIMRXIVPEGIV[MXLIHKIERHEVXMJEGXWQSSXLIV
%YXSQEXMG 12 TYPPHS[RHIXIGXMSRERHVIGSZIV]
( QYPXMTYVTSWIRSMWIVIHYGXMSRJSV(8:SVPSYW]EMVGEFPIMRTYX
14)+ EVXMJEGX VIQSZEP MRGPYHMRK HIFPSGOMRKERHQSWUYMXSRSMWIVIHYGXMSR
%VFMXVEV] JVEQI VEXI GSRZIVWMSR
)HKISVMIRXIHHIMRXIVPEGIV[MXLIHKIERHEVXMJEGXWQSSXLIV
%YXSQEXMG 12 TYPPHS[RHIXIGXMSRERHVIGSZIV]
( QYPXMTYVTSWIRSMWIVIHYGXMSRJSV(8:SVPSYW]EMVGEFPIMRTYX
14)+ EVXMJEGX VIQSZEP MRGPYHMRK HIFPSGOMRKERHQSWUYMXSRSMWIVIHYGXMSR
%VFMXVEV] JVEQI VEXI GSRZIVWMSR
17XEV4VSJIWWMSREP4MGXYVI)RLERGIQIRX
(]REQMG FVMPPMERX ERHJVIWLGSPSV
(]REQMG &PYI 7XVIXGL
-RXIRWMJMIH GSRXVEWX ERH HIXEMPW
(]REQMG :MZMH 7OMR
(]REQMG WLEVTIRIH 0YQE'LVSQE IHKIW
+PSFEP ERH PSGEP H]REQMG HITXL SJ JMIPH TIVGITXMSR
%GGYVEXI ERH MRHITIRHIRX GSPSV GSRXVSP
7YTTSVXW W6+& ERH \Z='' GSPSV TVSGIWWMRK
7YTTSVXW ,(1- HIIT GSPSV JSVQEX
(]REQMG &PYI 7XVIXGL
-RXIRWMJMIH GSRXVEWX ERH HIXEMPW
(]REQMG :MZMH 7OMR
(]REQMG WLEVTIRIH 0YQE'LVSQE IHKIW
+PSFEP ERH PSGEP H]REQMG HITXL SJ JMIPH TIVGITXMSR
%GGYVEXI ERH MRHITIRHIRX GSPSV GSRXVSP
7YTTSVXW W6+& ERH \Z='' GSPSV TVSGIWWMRK
7YTTSVXW ,(1- HIIT GSPSV JSVQEX
4VSKVEQQEFPIFMX6+&KEQQE'098
3YXTYX -RXIVJEGI
7MRKPIHYEPPMROFMX0:(7SYXTYX
7YTTSVXWTERIPVIWSPYXMSRYTXS*YPP,(\ $,^
7YTTSVXW8,8-JSVQEX
7YTTSVXWTERIPVIWSPYXMSRYTXS*YPP,(\ $,^
7YTTSVXW8,8-JSVQEX
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