lcd repair manual

Y BAN NHAN DAN THANH PH H CHI MINH
TRNG CAO NG GIAO THONG VN TI
NGANH SA CHA MAY TINH
ubai np cui khoau

dch t E-book ting Anh "LCD Monitor Repair" ca Jestine Yong
(cm n thy Vo Phu Cng a gi y)
Ngi dch: Bui Nam Minh Anh
E-mail:manganh@gmail.com
Mon: Man Hinh May Tinh
Lp: VT1-07A (k chiu)
Khoa: 2007-2009
uhe 2009u


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Bn ang c E-book ting Vit "Sa Man Hinh LCD" dch t E-book ting Anh
"LCD Monitor Repair" download min phi tren lqv77 (cm n anhVinh a chia s).
T trang 2 ti 180 la dch theo Jestine Yong (308 hinh minh ha), mi ch in
nghieng va cac trang con li la tim hiu ca ngi dch. Vic dch sai mt s t
chuyen mon la khong th tranh khi: cung mt t "power" nhng luc no la cong sut
(power cap, power IC) luc no la ngun (power FET). Sach dch co oi ch kho hiu
va co th bn s "khong bit minh ang c gi" mong bn thong cm cho.
qua trinh dch sang ting Vit co tham kho
ly thuyt Man Hinh May Tinh nganh Sa Cha May Tinh h TH 2 nm
trng C Giao Thong Vn Ti (trng TH Giao Thong Cong Chinh c)
cac website
k thut vien
LE QUANG VINH
hc ngh trc tuyn
cac website dch t ng trc tuyn min phi ca
LC VIT: http://www.vietgle.vn/dich/Default.aspx?tab=dtt&tabc=mt&type=
VDICT: http://vdict.com/?autotranslation (co sn GOOGLE TRANSLATE)
va cac thanh vien nhit tinh ca box hi - ap thuc BAMBOO TRA T
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Sa Man Hinh LCD

Tac gi: Jestine Yong
http://www.ElectronicRepairGuide.com
http://www.TestingElectronicComponents.com
http://www.FindBurntResistorValue.com
http://www.JestineYong.com


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Bn khong th cho min phi E-book nay.
Bn khong c quyn phan phi li E-book nay.
Quyn tac gi@mi tac quyn u c bo lu
Cnh bao! ay la tai liu co bn quyn; khong ni dung nao trong ay c sao
chep hoc phat tan di bt c hinh thc nao, bao gm hinh nh, bai v, hoc
phat tan bng thit b lu tr ma khong co s cho phep kem ngay thang va ch ky
ca tac gi. Bn khong th chnh sa, thay i, hoc lam mi li tai liu nay di
bt c cach thc nao.
Jestine Yong co y quyn trc lut bo v s hu tri tu bao gm ni dung, y
tng trong tai liu nay. Hay y thc rng Ebay tich cc hp tac trong vic khoa tai
khon ngi vi phm bn quyn va h tr truy bt hp phap vic vi phm.
Nhng iu cn bit v phap ly
Bn c c cnh bao ro can nhc va tip nhn va tranh cac nguy c co
th. E-book nay ch danh cho mc ich thong tin va tac gi khong co bt c trach
nhim va ngha v nao vi gia tr ca thong tin nay. Mi c gng a c thc hin
kim chng thong tin c cung cp ay, tac gi khong chu bt c trach
nhim nao v chu ng mt mat, tn hi, li, khong chinh xac, thiu sot hoc phin
phc xy ra do thong tin nay bi bt c ai. Phn ln cac th thut va bi quyt a
trinh bay ch nen c thc hin bi cac k s/k thut vien in t co kh nng
thich hp. Hay cn thn bi thit b in t co th nguy him khi thao ra. Bt c s
coi thng c hiu nao$ v chinh sach, con ngi hoc t chc c th u
khong co ch y.
Nu bn co thong tin lien quan ti vic ban li hoc sao chep E-book nay bt hp
phap, vui long bao cho jestineyong@electronicrepairguide.com.

$tc la nu co bt c s coi thng nao trong t ng thi o la ngoai ch y ca tac gi
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Li tng
Quyn sach nay xin c tng v Michelle cung cac con Noah va Hannah
yeu quy ca toi, ng s William Hor, v xinh ca anh y Stephanie va con gai h Naomi
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Ni dung
1. Thong hiu cong ngh hin th tinh th lng (LCD) --------------------------------------- 7
2. Tng quan cac mch man hinh LCD ---------------------------------------------------------- 17
3. S khi man hinh LCD-------------------------------------------------------------------------- 19
4. Thong hiu bo cp ngun -------------------------------------------------------------------------- 20
5. Thong hiu mainboard/bo AD -------------------------------------------------------------------- 26
6. Thong hiu bo cao ap -------------------------------------------------------------------------------- 30
7. Thong hiu mch khi ng----------------------------------------------------------------------- 40
8. Thong hiu backlight (en)------------------------------------------------------------------------- 44
9. Thong hiu bng LCD-------------------------------------------------------------------------------- 53
10. Ch bo tri hang man hinh LCD ------------------------------------------------------------ 57
11. Khac bit gia plasma va LCD ------------------------------------------------------------------- 60
12. Dng c va thit b o -------------------------------------------------------------------------------- 62
13. Bi quyt m np man hinh LCD ----------------------------------------------------------------- 66
14. Thong hiu ma in tr dan va kim tra ----------------------------------------------------- 70
15. Thong hiu ma t dan va kim tra -------------------------------------------------------------- 75
16. Thong hiu ma transistor va diode dan va kim tra ------------------------------------- 80
17. Ma IC in hinh man hinh LCD ------------------------------------------------------------------ 84
18. ng dng chnh lu diode Schottky va kim tra ------------------------------------------ 87
19. im nh tc va cht man hinh LCD ------------------------------------------------------- 93
20. Bng LCD b nt --------------------------------------------------------------------------------------- 96
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21. im o in ap chun man hinh LCD ------------------------------------------------------- 99
22. im o dng song chun man hinh LCD ------------------------------------------------ 110
23. Trc trc mau man hinh LCD ---------------------------------------------------------------- 119
24. Vn hinh trng man hinh LCD ---------------------------------------------------------- 124
25. Mt ln sang dc man hinh LCD Philips 170C ------------------------------------------ 127
26. Mt ln sang ngang man hinh LCD ---------------------------------------------------------- 131
27. Cach sa adapter ngun man hinh LCD -------------------------------------------------- 133
28. Cach sa vn mt ngun man hinh LCD Dell E151FP ------------------------- 141
29. Cach sa vn mt hinh man hinh LCD Dell E152Fpb--------------------------- 146
30. Cach sa vn t tt man hinh LCD Dell E153Fpc -------------------------------- 150
31. Cach sa vn nhp ngun man hinh LCD Dell E173FPB ---------------------- 153
32. Cach sa vn mt ngun chp chn may Acer AL511 ------------------------- 157
33. Cach sa vn mt hinh man hinh LCD Acer FP558 ----------------------------- 159
34. Cach sa vn sc ngang trng en man hinh LCD Samsung 151V ------ 163
35. Cach sa vn hinh m man hinh LCD Samsung 153V------------------------- 166
36. Cach sa vn mt ngun man hinh LCD Samsung 153V --------------------- 170
37. Cach sa vn mt ngun man hinh LCD Samsung 510BN ------------------- 173
38. Cach sa vn OSD man hinh LCD Samsung 713N------------------------------ 176
39. Ngun ngh ----------------------------------------------------------------------------------------- 179
40. Phn kt ---------------------------------------------------------------------------------------180



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Thong hiu cong ngh
hin th tinh th lng (LCD)

Man hinh LCD
Gii thiu
LCD hay man hinh vi tinh bng phng la cng hin to ln nht va gn ay nht
trong cong nghip may tinh ban. Chung c dung tren th trng may xach tay
t nhiu nm, nhng s phat trin gn ay a tng hiu sut va kich c cung luc
vi ct gim chi phi a giup chung tn ti c tren th trng may ban. Man
hinh LCD nh ky, sieu mng va it hao in hn man hinh CRT.
Tinh th lng la gi va no hot ng nh th nao?
Tinh th lng c phat hin bi nha sinh vt hc Fredreich Rheinizer ngi Ao
nm 1888. Tinh th lng la vt cht hu c l thng bi no khong phi cht rn
cng khong la cht lng. iu o co ngha du trng thai la cht lng, tinh th lng
li mang cu truc ca phan t tinh th tng t cht rn. Tinh th lng la cac phan
t hinh que ma chung co th c sp thanh hang mt cach chinh xac khi vao
vung in trng. Do la cht lng, chung co th chy theo quanh cac khia ranh nh
va co th thay i v tri ca chung tuy theo in ap t vao. Khi a sp thanh hang
hp ly, tinh th lng cho phep anh sang i qua to thanh nh mong mun.


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Cac phan t sp Khi tip xuc vi b Cac phan t sp
xp theo kiu cach mt co khe p
hang song song
co trt t lng lo (lp thng hang)
dc theo cac khe
Cac phan t tinh th trng thai t nhien
Man hinh LCD gm sau lp: anh sang nn (backlight), kinh phan cc (polarizer),
kinh TFT (TFT glass), dung dch tinh th lng (liquid crystal solution), kinh lc
mau/b lc mau (colour filter/colour filter glass) va kinh phan cc th hai.

nh ngun thuc in T Samsung
Ngun sang hunh quang, con gi la backlight, to thanh lat ct sau cui (hinh).
Anh sang c chiu t phia sau cac bng. Anh sang nay xuyen qua kinh phan
cc th nht. Anh sang c phan cc sau o xuyen qua lp cha hang ngan git
tinh th lng c dan hang trong mt ch cha nh xiu gi la o. Cac o, ln lt,
c dan thanh hang khp man nh, ba o to thanh mt im nh$ (pixel, im
nh nht co th nhin ro tren man hinh), in dn quanh l LCD to ra in trng
lam phan t tinh th xon li, phan t tinh th sp anh sang thanh hang bng kinh
lc phan cc th hai va cho phep anh sang xuyen qua. Mi tinh th hoc cho phep
anh sang xuyen qua hoc chn anh sang. S nh hinh cac tinh th to thanh nh.



$Mi im nh rng khong 300m trong o co ba im mau, mi im mau co mt transistor iu khin.
D liu nh s c a ln lt vao cc G (cc cng - gate) iu khin cho cac transistor nay dn to ra
t trng lam i hng cac tinh th lng. /*ly thuyt Man Hinh May Tinh*/
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Phan loi LCD
Man hinh mau LCD co hai loi c bn: ma trn th ng va ma trn tich cc.
im nh
im (o)
im (o) li
im nh li
man nh LCD

Vi bng LCD mau, mi im nh to ra bi ba o tinh th lng. Cac im nh thc
s khong sinh mau ma bn thy. o la anh sang trng (backlight) xuyen qua mi
im nh c lc to thanh mau mong mun. Kinh phia trc mi im (o)
mau , xanh la va xanh dng thi c ph cht lc mau. Anh sang xuyen qua
cac o a lc mau to ra mau nh bn thy tren LCD.
Mi o hay im nh con co th c ch nh a ch mt cach rieng l bng mt
in ap iu khin. Vi d, man nh ca man hinh LCD 15" co phan gii 1024 x
768 s co 2.359.296 im nh con (1024 x 768 x 3). Thnh thong c ch gi dong
in n mt hay nhiu im nh gp tht bi. Trng hp o bn s thy mt o ti
hn (o li) hay im nh li. c them v im nh li chng "im nh tc va
cht man hinh LCD".


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