笔记本供电电路故障分析与维修

᠔◄Ϲय़ ాࢃ‫ۉ‬უDŽ1/837ċ2/7WDž!
2/3W!
4/4W!
3/6W!
2/9W!
2/6W!
2/16W! 6W!‫ځ‬ऐ‫ۉ‬უ! 6W! 4/4W ‫ځ‬ऐ‫ۉ‬უ! 4/4W!
2/9W!
2/6W!
2/3W! 4/4W ‫ځ‬ऐ‫ۉ‬უ! 4/4W! 4/4W ई 3/6W! 4/4W! 4/4W! 6W! 23W! 6W! 23W! lj23W! 4/4W ‫ځ‬ऐ‫ۉ‬უ! 3/6W ‫ځ‬ऐ‫ۉ‬უ! 2/6W ‫ځ‬ऐ‫ۉ‬უ!
‫ټ‬࿁Ϲᛳ എᬜᑨ੥
MAX1631 Ϲ ⑤੥ˊᅳċ
೒ 7-3 MAX1631 Ϲ⑤੥ˊᅳċ
8/3/3!!ဣཥࠃ‫ۉۉ‬ୟ‫ۉࠃڦ‬ᇱ૙!
߳ԴऻԨ‫ۉ‬సዐဣཥࠃ‫ۉۉ‬ୟ‫߾ڦ‬ፕᇱ૙एԨ၎ཞLjኻ๟֑ᆩକփཞ‫ۉڦ‬ᇸ࠶૙ႊೌăူ௬
180!
Dibqufs!18!!ࠃ‫ۉۉ‬ୟࠤቱ‫ݴ‬ဆᇑྼႪ
৽ᅜ OFD ԴऻԨ‫ۉ‬సဣཥࠃ‫ۉۉ‬ୟઠ঄঴ဣཥࠃ‫ۉۉ‬ୟ‫߾ڦ‬ፕᇱ૙ă! OFD ԴऻԨ‫ۉ‬సဣཥࠃ‫ۉۉ‬ୟዷᄲ֑ᆩ NBY2::: ‫ۉ‬ᇸ࠶૙ႊೌፇ‫ڦׯ‬ਸ࠲‫ۉ‬ᇸ‫ۉ‬ୟྺဣཥ༵ࠃ
Ϲय़ᷛ⊼ WDDQ!
WUU ई WDD`2W3WJE!
WDD`4W4!
WDD`EES!
WDD`2W9!
WDD`2W6!
WUU! WDD6TC! WDD6! WDD4TC! WDD4!
WDD`2W9T!
WDD`2W6T!
WDD`DQV! WDD4TC! WDD4! WDD4 ई WDD3W6! WDD4! WDD4! WDD6! WDD23! WDD6! WDD23! WD&lj! WDD4TC! WDD3/6TC! WDD2/6TC!
Ϲय़ᷛ⊼ WDD4! WDD`EES! WDD`SFG! WEE! WUU! WEE! WUU! WDD23! WDDlj23! WDD6! WDD4! WDD4TC! WDD23! WDD4! WDD4TC! WDD6TC ई WDD6! WDD6TC ई WDD6! WDD4/4! WDD6! WDD23!
ဣཥࠃ‫ۉۉ‬ୟ‫߾ڦ‬ፕᇱ૙සူǖ! ‫ړ‬ԴऻԨ‫ۉ‬సҾጎࡻ‫׾ۉ‬ई‫ۉ‬ᇸ๢ದഗࢫLj‫׾ۉ‬ई‫ۉ‬ᇸ๢ದഗ‫ ڦ‬23W ई 27W ‫ۉ‬უঢ়ࡗ‫ߌۉ‬Ă ‫ۉ‬ඹ୳հࢫLjথ෇‫ۉ‬ᇸ࠶૙ႊೌ NBY2:::FBJ ‫ ڦ‬W,ᆅগLjྺ‫ۉ‬ᇸ࠶૙ႊೌ༵ࠃ߾ፕ‫ۉ‬უă!
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7.1 ৘ᩴᴀϹ࿕ՈկϹᴎࠊ
Dibqufs!!18!
ԴऻԨ‫ۉ‬సዐ‫ڦ‬ևॲ‫ܠ׉ݥ‬Lj௅߲ևॲत‫ۉ‬ୟႴᄲ‫ۉڦ‬უ߳փ၎ཞă՗ 8.2 ໯๖ྺዷӱዐ ߲߳ևॲत‫ۉ‬ୟႴᄲ‫߾ڦ‬ፕ‫ۉ‬უă!
ᜬ 7-1 Џᵓ৘ϾᾬӊঞϹᲳ◄ᡅՈᎹ԰Ϲय़
ৡࢴ DQV!
ԛൃႊೌ!
ళൃႊೌ!
J0P ႊೌ! ้ዓႊೌ! CJPT ႊೌ! ᅼೕႊೌ! ‫ز‬੨ႊೌ! ྪਸ਼ႊೌ!
NBY2:::FBJ ‫ ڼڦ‬7 ᆅগ!T!I!E!O!!!ྺ๼‫؜‬੦዆‫܋‬Ljُᆅগྺߛ‫ۉ‬ೝ้LjሎႹ‫ۉ‬ᇸ࠶૙ႊೌ๼‫؜‬Ǘ GC6 ࢅ GC4 ྺ‫ۉ‬უ‫ݒ‬ઍ႑ࡽ๼෇‫܋‬Ljᆯኄၵᆅগፇ‫ݒڦׯ‬ઍ‫ۉ‬ୟࣷํ้֪॔๼‫ۉۉࠃڦ؜‬უLjժ ‫ݒ‬ઍߴ‫ۉ‬ᇸ࠶૙ႊೌాև‫ ڦ‬QXN ੦዆ഗǗMY4 ࢅ MY6 ྺ‫ݒୁۉ‬ઍ‫܋‬Ljᆯኄၵᆅগፇ‫ݒڦׯ‬ઍ‫ۉ‬ ୟࣷํ้֪॔๼‫ୁۉۉࠃڦ؜‬Ljժ‫ݒ‬ઍߴ‫ۉ‬ᇸ࠶૙ႊೌాև‫ۙୁۉڦ‬ኝഗă!
2. ிඣկϹϹᲳՈඈ៤
ဣཥࠃ‫ۉۉ‬ୟዷᄲ֑ᆩਸ࠲‫ۉ‬ᇸࠃ‫ݛۉ‬๕ࠃ‫ۉ‬ă཮ 8.3 ໯๖ྺဣཥࠃ‫ۉۉ‬ୟ઀཮ă!
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!Ϲ
!⑤
Leabharlann Baidu
!
੥ ˊ
!ᅳ
!ċ
!
12V ៪ 16V Ϲय़
എᬜᑨ੥ എᬜᑨ੥
‫ټ‬࿁Ϲᛳ
Ⓒ⊶Ϲᆍ
ṗߎ 3.3V ៪ 5V Ϲय़
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೒ 7-2 ᓔ݇Ϲ⑤ඈ៤ՈிඣկϹϹᲳ
ഄዐLj‫ۉ‬ᇸ࠶૙ႊೌ๟ဣཥࠃ‫ۉۉ‬ୟ‫ࢃڦ‬႐LjԴऻԨ‫ۉ‬సဣཥࠃ‫ۉۉ‬ୟዐ‫׉‬ᆩ‫ۉڦ‬ᇸ࠶૙ႊ ೌዷᄲᆶ NBY ဣଚ‫ ڦ‬NBY2746ĂNBY2745ĂNBY2744ĂNBY2743ĂNBY2742ĂNBY2:::ĂNBY2::9Ă NBY2:13ĂNBY2:12ĂNBY9845 ‫ڪ‬Ljഄ໱‫׍‬ฆ‫ ڦ‬MUD2739ĂMUD4839ĂUQT62131ĂTD2514 ‫ڪ‬ă཮ 8.4 ໯๖ྺԴऻԨ‫ۉ‬సዐ NBY2742 ‫ۉ‬ᇸ࠶૙ႊೌă!
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Chapter 07
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ࠃ‫ۉۉ‬ୟࠤቱ‫ݴ‬ဆᇑྼႪ!
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Dibqufs!18!!ࠃ‫ۉۉ‬ୟࠤቱ‫ݴ‬ဆᇑྼႪ
! ! ԴऻԨ‫ۉ‬సࠃ‫ۉۉ‬ୟ๟ԴऻԨ‫ۉ‬సዷӱዘᄲ‫ڇڦ‬ᇮ‫ۉ‬ୟLj໲‫ڦ‬ፕᆩ๟‫ۉܔ‬ᇸ๢ದഗई‫׾ۉ‬๼ ‫ۉڦ؜‬უ৊ႜገ࣑‫ت‬૙Lj๑ഄ஢ፁփཞยԢ‫ڦ‬Ⴔ൱ăԴऻԨ‫ۉ‬సࠃ‫ۉۉ‬ୟዷᄲԈઔ‫ځ‬ऐ‫ۉ‬ୟĂဣ ཥࠃ‫ۉۉ‬ୟĂDQV ࠃ‫ۉۉ‬ୟĂా٪ࠃ‫ۉۉ‬ୟĂႊೌፇࠃ‫ۉۉ‬ୟĂNjoj!QDJ ֣֭ࠃ‫ۉۉ‬ୟ‫ڪ‬ă!
˄නᜬ˅
ኄၵࠃ‫ۉۉ‬უएԨฉ‫ۼ‬๟‫ۉ‬ᇸ๢ದഗई‫ ڦࠃ༵׾ۉ‬27W ई 23W ‫ۉ‬უཚࡗ NBY2:12Ă NBY2651ĂNBY2::4ĂNBY269:ĂJTM7631ĂNJD6366 ‫ۉڪ‬ᇸ࠶૙ႊೌ‫ت‬૙ࢫ‫ڦڟڥ‬ă!
཮ 8.2 ໯๖ྺగԴऻԨ‫ۉ‬సዷӱ߳ዖࠃ‫ݛۉ‬๕๖ᅪ཮ă! ཮ 8.2 ຫ௽କԴऻԨ‫ۉ‬సዷӱ߲߳և‫ۉݴ‬უ‫ڦ‬इ‫ݛڥ‬๕ăٗ཮ዐ੗ኪLjᅃӯԴऻԨ‫ۉ‬స‫ڦ‬ ࠃ‫ݛۉ‬๕ዷᄲᆶଇዖăᅃዖྺਸ࠲‫ۉ‬ᇸࠃ‫ݛۉ‬๕Ljनᆯ‫ۉ‬ᇸ࠶૙ႊೌĂ‫ׇ‬ၳᆌ࠶DŽNPTGFU ࠶DžĂ ‫ߌۉ‬Ă‫ۉ‬঴‫ۉ‬ඹፇ‫ׯ‬ăኄዖࠃ‫ݛۉ‬๕ዷᄲ๟ᆯ‫ۉ‬ᇸ࠶૙ႊೌ݀‫؜‬ஞ؋੦዆႑ࡽLj඗ࢫൻ‫ۯ‬ଇ߲‫ׇ‬ ၳᆌ࠶‫ڞں܎้ݴ‬ཚᇑপኹLjܸٗॽ‫ۉ‬ᇸ๢ದഗई‫׾ۉ‬๼ໃ‫ئీۉڦ‬٪ሞ‫ߌۉ‬ዐLjም৊ႜ๥‫ݣ‬Lj ྺ޶ሜࠃ‫ۉ‬ăኄዖࠃ‫ݛۉ‬๕๟ཚࡗ੦዆‫ׇ‬ၳᆌ࠶‫ڞڦ‬ཚᇑপኹ้क़‫ڦ‬Բ૩ઠۙኝ๼‫ۉ؜‬უă! ଷᅃዖ๟‫گ‬უֶ၍Ⴀۙუႊೌፇ‫ۙڦׯ‬უ‫ۉ‬ୟࠃ‫ݛۉ‬๕Ljኄዖ‫ݛ‬๕ᅃӯᆯ৛௢࿘უ࠶Ăण‫ׯ‬ ࿘უഗDŽස MN469DžĂ‫ׇ‬ၳᆌ࠶ईෙट࠶‫ڪ‬ፇ‫ׯ‬ăኄዖࠃ‫ݛۉ‬๕๟ᆯ৛௢࿘უ࠶༵ࠃएጚ‫ۉ‬უߴ ण‫ׯ‬࿘უഗLj඗ࢫᆯण‫ׯ‬࿘უഗ๼‫ۉۉࠃ؜‬უLjཞ้๼‫ۉ؜‬უํ้‫ں‬ᇑएጚ‫ۉ‬უፕԲডLjምᆯण ‫ׯ‬࿘უഗۙኝ๼‫ۉ؜‬უLj኱‫ڟ‬๼‫޶؜‬ሜႴᄲ‫߾ڦ‬ፕ‫ۉ‬უă! ኄଇዖࠃ‫ۉۉ‬ୟ‫ྺࠕీۼ‬ԴऻԨ‫ۉ‬సዷӱฉփཞ‫ڦ‬ႊೌࢅፇॲ༵ࠃ৛௢‫ۉڦ‬ᇸăଷྔLjԴऻ Ԩ‫ۉ‬సዷӱฉ‫ڦ‬ፇॲᄺ‫ݴ‬Ⴙ‫ܠ‬ዖLjᆶ‫ۉܔڦ‬უ௺ߌLjᆶ‫ߌ௺ୁۉܔڦ‬ăᅺُሞยऺฉՂႷྺኄၵ փཞ‫ڦ‬ፇॲยऺփཞ‫ۉ੊֖ࢅۉࠃڦ‬უ‫ۉ‬ୟă! !
ᓩ࿞ ᑣো 26! 27! 28! 29! 2:! 31! 32! 33! 34! 35!
ৡࢴ
MY6! EI6! WDD! MEP6! EM6! W,! PVU6! PVU4! HOE! EM4!
JMJN6! 6W ၌ୁۙኝ‫!܋‬
36!
MEP4!
TLJQ! UPO! CTU6!
‫گ‬ሯำఇ๕੦዆႑ࡽ๼෇‫ !܋‬37!
߾ፕೕ୲ยዃ‫!܋‬
38!
ాևߛ‫܋گ‬घ‫ۉࠃݣ‬๼෇‫ !܋‬39!
EI4! MY4! CTU4!
ࡳ࿁
‫ݒୁۉ‬ઍ‫!܋‬ 6W ߛ‫܋‬ோ๼‫!܋؜‬ ࠃ‫!܋ۉ‬ 6W ၍Ⴀ࿘უएጚ‫ۉ‬უ๼‫!܋؜‬ 6W ‫܋گ‬ோ๼‫!܋؜‬ ๢ದഗࠃ‫ۉ‬๼෇‫!܋‬ 6W ‫ۉ‬უ‫ݒ‬ઍ๼෇‫!܋‬ 4/4W ‫ۉ‬უ‫ݒ‬ઍ๼෇‫!܋‬ থ‫!܋ں‬ 4/4W ‫܋گ‬ோ๼‫!܋؜‬ 4/4W ၍Ⴀ࿘უएጚ‫ۉ‬უ๼‫؜‬ ‫!܋‬ 4/4W ߛ‫܋‬ோ๼‫!܋؜‬ ‫ݒୁۉ‬ઍ‫!܋‬ ాևߛ‫܋گ‬घ‫ۉࠃݣ‬๼෇‫!܋‬
178!
Dibqufs!18!!ࠃ‫ۉۉ‬ୟࠤቱ‫ݴ‬ဆᇑྼႪ
Dibqufs!!18!
೒ 7-1 ᶤЏᵓ৘࢑կϹᮍᓣ߾ᛣ೒
179!
Dibqufs!!18!
ԴऻԨ‫ۉ‬సྼႪरీํჟDŽ‫ܾڼ‬ӲDž!
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7.2 ிඣկϹϹᲳ᪪ᢧ
8/3/2!!ဣཥࠃ‫ۉۉ‬ୟ‫ۉࠃڦ‬ऐ዆!
1. ிඣկϹϹᲳՈࡳ࿁
ဣཥࠃ‫ۉۉ‬ୟዷᄲ๟ॽ‫׾ۉ‬ई๢ದഗ༵ࠃ‫ ڦ‬23W027W02:W ‫ۉ‬უገ࣑ྺԴऻԨ‫ۉ‬స໯Ⴔ‫ڦ‬ 4/4WĂ6WĂ23W ‫ۉڪ‬უăසࡕဣཥࠃ‫ۉۉ‬ୟࡗᇀ०‫ڇ‬ईยऺփࢇ૙Ljሶࣷ‫؜‬၄‫ۉ‬ୟࠃ‫ۉ‬փፁ‫ڦ‬၄ ၡLjीܸᆖၚԴऻԨ‫ۉ‬స‫ڦ‬࿘ۨႠă!
EI6 ᆅগྺ 6W ߛ‫܋‬ோൻ‫ۯ‬ஞ؋๼‫܋؜‬Lj૶থ QR48 ాև‫ڦ‬ᅃ߲‫ׇ‬ၳᆌ࠶‫ ڦ‬H टLjཚࡗၠ૶ থ‫ׇڦ‬ၳᆌ࠶݀ໃൻ‫ۯ‬ஞ؋੦዆႑ࡽ੦዆‫ׇ‬ၳᆌ࠶‫ڞڦ‬ཚᇑপኹǗEM6 ᆅগྺ 6W ‫܋گ‬ோൻ‫ۯ‬ஞ ؋๼‫܋؜‬Lj૶থ QR48 ాևଷᅃ߲‫ׇ‬ၳᆌ࠶‫ ڦ‬H टLjཚࡗၠ‫ׇ‬ၳᆌ࠶݀ໃൻ‫ۯ‬ஞ؋੦዆႑ࡽ੦዆ ‫ׇ‬ၳᆌ࠶‫ڞڦ‬ཚᇑপኹǗ߾ፕዐ‫ۉ‬ᇸ࠶૙ႊೌ NBY2:::FBJ ‫ݴ‬՚ཚࡗ EI6 ‫ ࢅ܋‬EM6 ‫ݒྺࢻࠃ༵܋‬ ၎‫ڦ‬ਈႚհஞ؋Lj๑໲்‫ݴ‬՚‫ڞ‬ཚईপኹă!
177!
Dibqufs!!18!
ԴऻԨ‫ۉ‬సྼႪरీํჟDŽ‫ܾڼ‬ӲDž!
ৡࢴ 24:5 ႊೌ! EES ా٪֣֭! EES3 ా٪֣֭! EES4 ా٪֣֭!
Njoj!QDJ ֣֭!
Njoj!QDJ.F ֣֭! VTC থ੨! QT03 থ੨! ᅂৗ௬ӱ!
᠔◄Ϲय़ 4/4W! 3/6W! 2/36W! 2/9W! 1/:W! 2/6W! 1/86W! 23W! lj23W! 6W! 4/4W! 4/4W ‫ځ‬ऐ‫ۉ‬უ! 23W! 4/4W! 4/4W ‫ځ‬ऐ‫ۉ‬უ! 6W ‫ځ‬ऐ‫ۉ‬უई 6W! 6W ‫ځ‬ऐ‫ۉ‬უई 6W! 4/4W! 6W! 23W!
ᓩ࿞ ᑣো 2! 3! 4! 5! 6! 7! 8! 9! :! 21!
22!
23! 24! 25!
ᜬ 7-2 MAX1999EAI ৘ᓩ࿞Ոࡳ࿁
ৡࢴ ࡳ࿁
OD! QHPPE! PO4! PO6! JMJN4! TIEO! GC4! SFG! GC6! QSP!
੣গ! QH ႑ࡽ๼‫!܋؜‬ 4/4W ๑ీ੦዆‫!܋‬ 6W ๑ీ੦዆‫!܋‬ 4/4W ၌ୁۙኝ‫!܋‬ ਸ࠲੦዆႑ࡽ๼෇‫!܋‬ 4/4W ‫ݒ‬ઍ๼෇‫!܋‬ 3W एጚ‫ۉ‬უ๼‫!܋؜‬ 6W ‫ݒ‬ઍ๼෇‫!܋‬ ࡗუԍࢺ੦዆‫!܋‬
4/4WĂ6W ࠃ‫ۉۉ‬უă཮ 8.5 ໯๖ྺ NBY2:::FBJ ‫ۉ‬ᇸ࠶૙ႊೌፇ‫ڦׯ‬ဣཥࠃ‫ۉۉ‬ୟᇱ૙཮ă!
Dibqufs!!18!
೒ 7-4 MAX1999EAI Ϲ⑤੥ˊᅳċඈ៤ՈிඣկϹϹᲳॳˊ೒
181!
ԴऻԨ‫ۉ‬సྼႪरీํჟDŽ‫ܾڼ‬ӲDž!
Dibqufs!!18!
཮ 8.5 ዐLjQV6 ๟ெ႑ࠅິิׂ‫ڦ‬ມ๼‫؜‬Ăཞօইუ‫ۉ‬ᇸ੦዆ഗ NBY2:::FBJăഄాևᆶଇ ߲ QXN ੦዆ഗDŽᅃ߲๼‫ ؜‬4/4WLjᅃ߲๼‫ ؜‬6WDžă޿ႊೌ๼‫ۉ؜‬უ‫ྷݔڦ‬๟ 3/1ċ6/6WLj੗ᅜย ዃ๼‫ ؜‬4/4W ࢅ 6W ࠦۨ‫ۉ‬უLjᄺ੗ᅜยዃ๼‫؜‬੗ۙ‫ۉڦ‬უăNBY2:::FBJ ਏᆶ 3 ୟ၍Ⴀ࿘უഗLj ༵ࠃ๔ዕᆶၳ‫ ڦ‬6W ࢅ 4/4W ๼‫ۉ؜‬უLj൐๼‫ۉ؜‬უ‫ ٳߛୁۉڦ‬211nBăNBY2:::FBJ ‫ۉ‬ᇸ࠶૙ႊ ೌጺࠌᆶ 39 ߲ᆅগLj߳ᆅগ‫ీࠀڦ‬ස՗ 8.3 ໯๖ă!
EI4 ᆅগྺ 4/4W ߛ‫܋‬ோൻ‫ۯ‬ஞ؋๼‫܋؜‬Lj૶থ QR35 ాև‫ڦ‬ᅃ߲‫ׇ‬ၳᆌ࠶‫ ڦ‬H टLjཚࡗၠ ૶থ‫ׇڦ‬ၳᆌ࠶݀ໃൻ‫ۯ‬ஞ؋੦዆႑ࡽ੦዆‫ׇ‬ၳᆌ࠶‫ڞڦ‬ཚᇑপኹǗEM4 ᆅগྺ 4/4W ‫܋گ‬ோൻ ‫ۯ‬ஞ؋๼‫܋؜‬Lj૶থ QR35 ాևଷᅃ߲‫ׇ‬ၳᆌ࠶‫ ڦ‬H टLjཚࡗၠ‫ׇ‬ၳᆌ࠶݀ໃൻ‫ۯ‬ஞ؋੦዆႑ࡽ ੦዆‫ׇ‬ၳᆌ࠶‫ڞڦ‬ཚᇑপኹǗ߾ፕዐ‫ۉ‬ᇸ࠶૙ႊೌ NBY2:::FBJ ‫ݴ‬՚ཚࡗ EI4 ‫ ࢅ܋‬EM4 ‫ࢻࠃ༵܋‬ ྺ‫ݒ‬၎‫ڦ‬ਈႚհஞ؋Lj๑໲்‫ݴ‬՚‫ڞ‬ཚईপኹă!