rac standard repair process (2010)

7/29/2019 RAC Standard Repair Process (2010)

1/103

Ti liu hun luyn k thut my lnh LG Electronics Viet Nam1

QUI TRNH TIU CHUN

SA CHA MY IU HA NHIT (LOI GIA DNG RAC)

LGEVN / SVC Dept.

Dec. 2010


2/103


Van y

Van ht

Ga p sutcao(Nhit cao)

Ccngoi

Cctrong

Thi gian Dec 2010

Thc hin bi LGEVN / SVC Dept.

iu ha nhit gia dng (RAC)

Nidung

1. Nguyn l hot ng

S nguyn l


3/103


LGEVN / SVC Dept.


Nidung

1. Nguyn l hot ng

S nguyn l

My iu ha mt chiu(Lm lnh)

My iu ha hai chiu(Lm lnh / Si m)

Cp

Cp 2

Cp 1

Van 1 chiu

My nn My nn

Van o chiu

Ccngoi

Cctrong

Ccngoi

Cctrong

Lm lnh; --Si m

Ch

- qu trnh lm lnh : Cc trong l dn bay hi (dnlnh). Cc ngoi l dn ngng (dn nng)- qu trnh si m : Cc trong l dn ngng (dn nng). Cc ngoi l dn bay hi (dn lnh)

Thi gian Dec 2010

Thc hin bi


4/103


ng c qut(Dn lnh)

Dn lnh

V mch

cc trong

V mchcc ngoi

My nn

Dn nng Van o chiu

(4 Way)

ng c qut(Dn nng)Tit lu

Van SVC

Qut ccngoi

LGEVN / SVC Dept.


Nidung

1. Nguyn l hot ng

Cc linh kin c bn

Thi gian Dec 2010

Thc hin bi


5/103Ti liu hun luyn k thut my lnh LG Electronics Viet Nam5

LGEVN / SVC Dept.


Nidung

1. Nguyn l hot ng

Nguyn l hot ng

C s l thuyt- Vt cht thu nhit hoc thi nhit khi thay i trng thiQu trnh ha hi (si) : Thu nhit t mi trng bn ngoiQu trnh ha lng (ngng t) : Thi nhit ra mi trng bn ngoi

- Trong my iu ha nhit ngi ta a mi cht v cc trng thi tng ng mi cht thc hin cc qu trnhsi v ngng t thc hin qu trnh lm lnh khng kh

Chu trnh hot ng

Mi cht thc hin qu trnh si trong dn bay hi (dn lnh) v chuyn t trng thi lng sang trng thi hi. Hi c my nn htv v y ln dn ngng t (dn nng). Ti dn ngng t mi cht trng thi nhit v p sut cao c qut gi lm mt, thc

hin qu trnh ngng t (chuyn t trng thi hi sang trng thi lng) v thi nhit ra mi trng bn ngoi.

Mi cht lng t dn ngng t di tc ca s chnh lch p sut chuyn ng ti thit b tit lu (ng mao, cp, van tit lu).Khi i qua thit b tit lu, nhit v p sut mi cht gim n gi tr thch hp v chuyn ti dn bay hi tip tc thchin qutrnh bay hi. Ti y mi cht thay i trng thi t lng sang hi v thu nhit ca mi trng xung quanh dn bay hi. Qu trnh cnh th lin tc xay ra trong my iu ha nhit .

Thi gian Dec 2010

Thc hin bi



CC DNG SN PHM 2010

2010C IM CHNH

Phthng

Caocp

Inverter

- Inverter: Tit kim

in, n thp

-Thng nht kiu

dng

- M rng dng

sn phm

-Thm chc nng:

Tm lc H1N1

A-C09 M/G/SA-C12 M/G/S

N-C09IN-C12I

J-C09T / J-C12TJ-H09T / J-H12T

J-C18S / J-C24SJ-H18S / J-H24S

A-C18 M

A-C24 M

F-09CN / F-12CNF-09HN / F-12HN

F-18CN / F-24CNF-18HN/ F-24HN

R-09CNR-12CN

V-09CDV-12CD

2009

Thng 2/20 10

Thng 2/20 10

Thng 1/20 10

Thng 1/20 10

Chms

csckho

V-09CEV-12CE

Thng 2/20 10

LGEVN / SVC Dept.


Nidung

2. Cc model chnh

Lch s pht trin

Thi gian Dec 2010

Thc hin bi



CCH C TN MODEL

1 2 3 4 5

Capacity

Series

LineType

1. Line:

A: Art Cool

V: Health + Inverter

R: Health+ Chm sc sc kho

F: Health + Ph thng

2 3.Btu

09: 9000 BTU

12: 1200 BTU

18: 1800 BTU

24: 2400 BTU

4 :Type

C: Cooling (Mt chiu)

H: Heat-pump (Hai chiu)

5. Series

N: Normal (Thng thng)

M: Mirror

G: Golden

S: Silver

E: Normal inverter

D: Plasma inverter

LGEVN / SVC Dept.


Nidung

3. Tn Model

Thng s k thut & c tnh

Thi gian Dec 2010

Thc hin bi

V d: F09CN

My lnh Health ph thng

Cng sut my 9,000 BTU/h

My mt chiu lm lnh

Loi thng thng



CCH C TN MODELLGEVN / SVC Dept.


Nidung

3. Tn Model

M t cng ngh inverter

Thi gian Dec 2010

Thc hin bi

V sao cng ngh Inverter c th tit kim in nng

Nhit phng (0C)

Nhit mongmun

30

26

22

18

Thi gian

TT

Lm lnhnhanh hn

Nhit thayi lin tc

Nhit phngLun n nh bng

cch iu chnh tc quay ca my nn

M

Loi thng thng

iu ha Inverter LG





Nidung

3. Tn Model

H thng mn lc chm sc sc kho

Thi gian Dec 2010

Thc hin bi

Tm lc sinh hc Tm lc 3 lp Tm lc PlasmaTm lc H1N1 Tm lc chng d ng

Lc bi Kh mi Dit khun Dit virus cm A(H1N1)

Chng d ng

H THNG LC KH DIT KHUN


10/103




Nidung

3. Tn Model


Thi gian Dec 2010

Thc hin bi

Lm lnh nhanh Jet Cool

Dn tn nhit m vngT ng lm sch

T ng thi gi 4 hng

iu chnh hng thi gi

Cng ngh DC Inverter

Tm lc Plasma

Tm lc chng d ng

Tm lc dit H1N1

V09CD V12CD

Cng sut 2,843 3,520

9,700 12,500

Tiu th in 670 1,010

Dng in 3.1 4.6

EER 4.24 3.4914.5 12.4

Lu lng gi Cc trong ti a 11.5 (406) 11.5 (406)

Cc ngoi ti a 38 (1341) 38 (1341)

Thng s k thut n vTn Model

W

Btu/h

W

A

W/WBtu/h.W

m3/min(CFM)

m3/min(CFM)

V09CD 9,700Btu/h

V12CD 12,500Btu/h


11/103




Nidung

3. Tn Model


Thi gian Dec 2010

Thc hin bi

R09CN R12CN

Cng sut 2,638 3,517

9,000 12,000

Tiu th in 850 1,140

Dng in 3.8 5.1

EER 3.1 3.1

10.6 10.5

Lu lng gi Cc trong ti a 7.6 (269) 8.8 (311)

Cc ngoi ti a 20 (706) 38 (1341)

Tn Model

W

Btu/h

W

Thng s k thut n v

m3/min(CFM)

A

W/W

Btu/h.W

m3/min(CFM)

R09CN 9,000Btu/h

R12CN 12,000Btu/h

Tm lc Plasma

Tm lc chng d ng

Tm lc dit H1N1


Dn tn nhit m vng

T ng lm sch

T ng thi gi 4 hng

iu chnh hng thi gi


12/103




Nidung

3. Tn Model


Thi gian Dec 2010

Thc hin bi

F09CN F12CN

Cng sut 2,726 3,517

9,300 12,000

Tiu th in 900 1,140

Dng in 4.0 5.1

EER 3.0 3.1

10.3 10.5

Lu lng gi Cc trong ti a 7.6 (269) 8.8 (311)Cc ngoi ti a 20 (706) 38 (1341)m3/min(CFM)

W

A

W/W

Btu/h.W

Thng s k thut n v

m3/min(CFM)

Tn Model

W

Btu/h

F09CN 9,300 Btu/h

F12CN 12,000 Btu/h

Tm lc dit H1N1

Tm lc 3 lp


Dn tn nhit m vng

T ng thi gi 2 hng

T vn hnh khi c in li

CCH C TN MODEL


13/103




Nidung

3. Tn Model


Thi gian Dec 2010

Thc hin bi

F18CN F24CN

Cng sut 5,275 7,034

18,000 24,000

Tiu th in 1,800 2,700

Dng in 8.5 12.6

EER 2.9 2.6

10.0 8.9

Lu lng gi Cc trong ti a 13 (495) 14.9 (526)

Cc ngoi ti a 43 (1519) 43(1519)

Tn Model

m3/min(CFM)

W

A

W/WBtu/h.W

Thng s k thut n v

m3/min(CFM)

W

Btu/h

Tm lc 3 lpLm lnh nhanh Jet Cool

T ng thi gi 2 hng

T vn hnh khi c in liF18CN 18,000 Btu/h

F24CN 24,000 Btu/h

CCH C TN MODEL


14/103




Nidung

3. Tn Model


Thi gian Dec 2010

Thc hin bi

F09CN F12CN F18CN F24CN

Cng sut 2,726 3,517 5,275 7,034

9,300 12,000 18,000 24,000

Tiu th in 900 1,140 1,800 2,700

Dng in 4.0 5.1 8.5 12.6

EER 3.0 3.1 2.9 2.6

10.3 10.5 10.0 8.9

Lu lng gi Cc trong ti a 7.6 (269) 8.8 (311) 13 (495) 14.9 (526)

Cc ngoi ti a 20 (706) 38 (1341) 43 (1519) 43(1519)

Thng s k thut n v

m3/min(CFM)

Tn Model

m3/min(CFM)

W

A

W/W

Btu/h.W

W

Btu/h

F18HN Lm lnh: 18,000 Btu/h

Si m: 19 000 Btu/h


Si m: 24,000 Btu/h


Si m: 9 000 Btu/h


Si m: 13,000 Btu/h

2 chiu

Tm lc dit H1N1

Tm lc 3 lp


Dn tn nhit m vng

T ng thi gi 2 hng

T vn hnh khi c in li

CCH LA CHN CHIC IU HO PH HP


15/103



Cng sut my cn ph hp vi kch thc phng

- Cng sut iu ho cn ph hp vi din tch phng.- Nu phng qu ln so vi cng sut iu ho th s mt thi gian lm lnh v tn in.

9,000 15m2=

BTU Din tch

12,000 16m2-22m2=

18,000 =

24,000 =

22m2-30m2

31m2-35m2

LGEVN / SVC Dept.


Nidung

4. La chn cng sut my

Chn my theo kch thc phng

Phng tiu chun:

1. Tng dy 20cm

2. Lp cc ngoi trnh hng ng, Ty

3. Cc trong cch mt t 2,5-2,7m

4. Phng kn

5. Khng s dng nhiu to nhit, nu s dng nhiu th phi b ti

Thi gian Dec 2010

Thc hin bi



16/103


CCH LA CHN CHIC IU HO PH HPLGEVN / SVC Dept.


Nidung

5. K thut sa cha c bn

5.1 Phng php thu ga

M ng

X kh

Ccngoi

ng(van y)

Bc 1: Kim tra trng thi ca cc van chn.Cc van phi trng thi m.

Bc 2: Vn hnh h thng chc nng lmlnh khong 15 pht.

Bc 3: Dng h thng v ch khong 3 phtsau np ng h np ga vo van ng ht. Ch : ni u dy c ti ca ng h np ga vi vanca my.

Bc 4: X kh cho ng h v cc dy bngcch t t m van ng ht x kh.

Bc 5:ng van ng y ca cc ngoi vkhi ng h thng ch lm lnh cho nkhi p sut trong h thng t gi tr 1kg/cm2.

Bc 6:Dng h thng v ngay lp tc ng van ng ht. Thao tc nhanh chng p sut trn ng h khng tng qu 3 n

5kg/cm2.Ch : Nu khng kp ng van th c th ng 2/3 van ht ri dng my. Vic ng hon ton van ht trc khi dng my c th lm hng bphn ht nn ca my do chy p sut thp v thiu du bi trn.

Bc 7:Tho ng h v lp tt c cc rc-co, lp van. Kim tra x ga (th kn) cho cc van ca cc ngoi. Khi kim tra trnh nc x phng lt vo bn trong van.

Cctrong

M(van ht)

Thi gian Dec 2010

Thc hin bi


5 K th t h b


17/103




Nidung


5.2 Phng php x b ga

Bc 1: Kim tra cc van v chc chn cc van ang trng thi m.

Bc 2:Ni ng h np ga vi van ng ht.Ch : Cc van ca ng h phi trng thi ng trc khi ni vo my.

Bc 3: M van xanh (Lo side) ca ng h v x ga cho n khi p sut t 0 kg/cm2.Ch : X ga t t trnh vic du theo ga ra ngoi lm my nen thiu du. Chy my trong tnh trng thiu du c th lm hngmy nn.

M ng

X kh

Ccngoi

M(van y)

M(van ht)

Cctrong

Thi gian Dec 2010

Thc hin bi


5 K th t h b Thi i D 2010


18/103




Nidung


5.3 Phng php ht chn khng

Bc 4: Tho dy ng h khi bm ht.Ch :

- Phi thng xuyn kim tra du bi trn ca bm chn khng. Nu thiu phi b sung. Nu bn phi thay du mi.- Nu dng bm ht trong qu trnh ht chn khng phi ng van xanh ca ng h trnh tnh trng du bi trn camy nn hi ngc vo trong h thng llnh do chnh lch p sut.

M ng

Ccngoi

M(van y)

Cctrong

M(van ht)

Bc 1:Ni cc dy ca ng hnp vi my v bm ht nh hnhv.

Bc 2: Chy bm ht chnkhng. Ht chn khng cho nkhi chn khng t -760mmHg hoc thp hn. Vi cctrng hp r ht ga lu ngythi gian ht c th cn ti hnggi.

Bc 3:ng van xanh (Lo side)ca ng h, tt bm ht chnkhng. Theo di kim ng htrong khong thi gian khong 15pht hoc lu hn v chc chnrng ch s ca kim ng hkhng thay i (p sut khngtng ln).

Thi gian Dec 2010

Thc hin bi


5 K thut sa cha c bn Thi i D 2010


19/103




Nidung


5.4 Phng php np ga

Nu khng dng cn th vic np ga lng cho my ang chy nn thc hin t t, np t mt. Khi p sut t khang 50 PSI thi nn chuyn sang np ga hi tin cn chnh lng ga np.

Gi tr p sut trn ng h ch chnh xc khong 20 pht sau khi dng np ga lng vo my. (Thng thng cao ln)

Bc 1:Ni ng h np vi chai ga vmy nh hnh v.Ni dy ng h va tho t bm chn

khng vi chai ga. S dng cn v ln ngc chai ga c th np ga lng cho h thng.

Bc 2: X kh chong h M van chai ga v nhn nh vo ux kh ca ng h . (Hy cn thn viga lng).

Bc 3: M van xanh (Lo side) v tinhnh np ga lng cho h thng.

Nu khng th np khi lng ga nhtnh cho h thng th c th np thnhnhiu ln, (mi ln np khong 150 gam)trong khi my ang chy ch lmlnh; Tuy nhin phng php ny khnghiu qu v tn thi gian. Hy ikhong vi pht v tin hnh nht ga ri

tip tc thc hin qu trnh np.

M ng

Ccngoi

M(van y)

Cctrong

M(van ht)

Thi gian Dec 2010

Thc hin bi


5 K thut sa cha c bn Thi gian Dec 2010


20/103




Nidung


5.4 Phng php np ga

Gi tr p sut ht ca my lnh LGvo khong t 65~80 PSI. Gi tr nyph thuc vo nhit ngoi tri, nhit

trong nh, sch ca dn, li lc. quyt nh p sut ht cn kim tranhit ng ht. My ga thng nght phi lnh sau khong 20 pht k tlc my nn bt u chy.

CH :1. Tuyt i trnh vic np khi lng

ln ga lng lin tc vo ng ht

ca my trong khi ang chy. Vicny c th lm hng hoc gim tuith my nn.

2. Khi np ga lng cho my p sut hts thp hn thc t. Hy vn hnhmy sau 30 pht p sut h thngn nh trc khi o.

Bc 4: Tho ng h np ga.

Bc 5:Lp cc m van.

Ch : Th kn sau khi lp cc m van.

M ng

Ccngoi

M(van y)

Cctrong

M(van ht)

* Khi np ga R410 th cc gi tr p sut tng khong 1,5 ~ 1,6 ln so vi R22

Thi gian Dec 2010

Thc hin bi


5 K thut sa cha c bn Thi gian Dec 2010


21/103




Nidung


5.5 Phng php hn hi

1. B hn hi bao gm: Chai gas Chai oxy Dy hn hn 5 mt, Van an ton

ng h chai oxy, chai gas Bc hn.2. Hng dn hn:

Bc1: M chai Oxy trc sau m chai gas sau.

Bc2: Kim tra ng h chai gas v chai oxy (ng h chai gas 0.5kg v gi khong 0.4`0.6 kgf/cm2).

Bc3: M v iu chnh van bc hn (Van oxy m trc sau van ga).

Bc4: Mi la v in chnh ngn la sao cho hp l nht.

Bc5: Kt thc hn kho van gas trc sau kho van oxy. (Kho chai gas trc sau kho van chai oxy).

Thi gian Dec 2010

Thc hin bi

Vn an ton:

Ch chai gas v chai oxy xa v tr hnt nht 3m.

Khi kt ni dy hn vo chai oxy va gastrnh du m v cao su.

Phi c van an ton hn ch ti nn

6 X l r nc Thi gian Dec 2010


22/103


1. ng nc thi khng thng lm nc

chy ngc t phn gp ca ng nc.Ko thng ng nc

2. ng nc thi cao hn mng nc.H thp ng nc.

LGEVN / SVC Dept.


Nidung

6. X l r nc

6.1 R nc do lp t

Phn loi Triu chng Hnh nh minh ha Phng php sa cha

R nc

trong nh

Nc nh xung t

pha di ca cctrong.

1. Kim tra tnh trng ng nc thi b caohn mng nc hoc ng ng dcngc t ngoi vo trong lm nckhng chy ra c.H thp ng ngNng cao cc trong

2. Kim tra ng ng xuyn qua tngc b dc ngc theo l khoan khngKhoan li l

Nc nh xung tpha di ca cctrong.

Thi gian Dec 2010

Thc hin bi

i h hit Ni 6 X l r nc Thi gian Dec 2010


23/103


1. Kim tra r r ti mng, ng nc thi

hoc phn ng nc thi ni thm .c bit ch cc ch ghp ni. Dng keoDng bng cao su non

2. Kim tra tnh trng r r gy ra do ngnc thi khng ni hon ton vimng nc thiDng thanh kpDng lt rt (lt nha)

Dn lnh

Mng

Indoor unit

LGEVN / SVC Dept.


Nidung

6. X l r nc

6.1 R nc do lp t


Nc nh xung t

pha di ca cctrong.

u ngcao ln

R nc

Phn ng ni thm

Dng quai nh nhaHoc thp c nhcho u ng

Nc nh xung tpha di ca cctrong.

Thi gian Dec 2010

Thc hin bi

iu ha nhit Ni 6. X l r nc Thi gian Dec 2010


24/103


LGEVN / SVC Dept.


Nidung

6. X l r nc

6.1 R nc do lp t


Nc chy vo trongnh theo ng ng khitri ma

ng ng

Khi cc ngoi cao hncc trong v ng ngkhng ng qui cch

nc mua c th chyngc vo trong

Un ng ng to

By nc pha bnNgoi tng

ng ng

1. Bo n ti cc im ni rc co khng

ng qui cchBc li bo n

2. Bo n b gim cht lng sau thi gians dng (C ng sng trn b mt) Thay bo n mi

Nc chy xung t

ng ng ga

Thi gian Dec 2010

Thc hin bi



25/103


LGEVN / SVC Dept.


Nidung

6.2 R nc do s dng


Nc chy vo trongnh do dn lnh v li

lc gi b nght bn

Triu chng khi dn nght bn

Gi yu, km hoc khng lnh. Chnh lch nhit vo / ra nh hn10. (Bnh thng t: 10 ~ 12) Khi np thm ga, p sut khng tnghoc tng chm

C nc ng xung quanh ming thi giv mng nc thi.

C th c tuyt v ng hi v van ht. C ga lng v my nn v ng ht.

V sinh dn lnh v li lc bng hinn hoc bm nc p sut cao.

Khng kh & Bi

Khng kh

Sch

Nc ngng

g

Thc hin bi



26/103


LGEVN / SVC Dept.


Nidung

6.3 R nc do cht lng sn phm


1. Kim tra xem c vt cn (ba-via, chtbn) trn ng n nc t cc chi

tit nha ti mng nc thi khng (4v tr tri, phi, trn, di)

Ty ba-viaV sinh cht bn

Nc chy xung tpha di cc trong

1. Kim tra tnh trng dn bo n trn xat-xi my. Bo n ny khng c ph ln

ng i ca nc

Dn li bo n


g

Thc hin bi



27/103


LGEVN / SVC Dept.


Nidung

6.3 R nc do cht lng sn phm


1. Nc ngng t ng ng nh rangoi mng

S dng lt nha buc cht bo npha trn cc u ng ca dn lnh


1. ng ng t st vo cc chi tit nhalm ng sng

Dn b sung bo n vo pha idin vi ng ng.


Thc hin bi



28/103


LGEVN / SVC Dept.


Nidung 6.3 R nc do cht lng sn phm


1. Nc ngng t dn lnh chy rangoi theo bo n (dn sai qui cch)

Dn li bo n sao cho nckhng chy c t bo n ra vnha ri xung sn nh

Trong mt s trng hp c thdn bo n ln b mt ca dn dnlnh ngn nc chy ra v my


* Dn bo n c th nh hng n nng sutca my

Thc hin bi

iu ha nhit Ni 7. My khng lnh Thi gian Dec 2010


29/103


LGEVN / SVC Dept.

gia dng (RAC)

dung 7.1 Mt lnh hon ton


Kim tra li ci t ca ngi s dng- Ch hot ng (lm lnh, sim, ht m, t ng)- Nhit ci t (nhit ci tphi thp hn nhit phng t nht 2 C)

Kim tra iu khin t xaC th kim tra iu khin t xa bngin thoi di ng:- Bt camera ca in thoi di ng

- Hng trc tip iu khin vocamera ca in thoi v nhn ccnt chc nng ca iu khin. Nuthy mn hnh in thoi c hinchm sng l iu khin cn hotng.

Kim tra m t cc ngoi

My mt lnh hon ton 1. Ci t nhit v ch vn hnh sai

2. Hng qut gi cc ngoi

Thc hin bi



30/103


LGEVN / SVC Dept.

gia dng (RAC)

dung 7.1 Mt lnh hon ton

Phn loi Triu chng Nguyn nhn & Hnh nh minh ha Phng php sa cha

My mt lnh hon ton Triu chng m t hng- Khng hot ng.

- Tc thp hoc rt thp.- Trc m t khng quay do hng vng bi.- C khi, mi kht t m t.- Ting n ln.

Phng php sa cha- Tt ngun, tho conector, ly m t ra

ngoi.-o in tr cc cun dy ca m t

(Cun chnh, cun ph, cun tc ). occh in ca cun dy vi v m t.- S dng t in cn tt kim tra tnh

trng hot ng ca m t.

Kim tra t qut gi

- Dng ng h vn nng thang x100Khoc thang o t in kim tra hai cc Cv F ca tuh in.- Thay th nu t b hng hoc kh

3. Hng t in qut gi

c

F

H

Thc hin bi

iu ha nhit Ni 7. My khng lnh

Thi gian Dec 2010


31/103


LGEVN / SVC Dept.gia dng (RAC) dung 7.1 Mt lnh hon ton


My mt lnh hon ton 1. Kim tra cun dy ca my nna) Kim tra chm v

- Tho dy in khi my nn.-t ng h thang Rx1Kv o in

tr gia cc gic cm vi v ng ht(phn ng ng). Nu in tr di1000K (1M) l my nn b chm v Thay my nn

b) Kim tra in tr cun dy-t ng h thang Rx1 v o 2 trong

3 chn R,S,CV d: R-S 4.5; C-S 3 C-R 1.5

- Khi khng o c gi tr in tr ->cun dy b t thay my nn.Ch :

* Mt s loi my nn LG c gi tr intr cc cun R v S gn bng nhau

* Vi cc my nn c OLP bn trong, phichc chn OLP trng thi NGkhi o in tr cun dy (lm ngui mynn trc khi o)

4. Hng my nn

Bnh gp

S

R C

Gic cm

V tr R, S, C (Nhn t trn xung)

Thc hin bi



32/103




Hng my nn (tip theo trang trc)

2. Hng phn c my nn (kt)a). Khng khi ng (C dng in vo my nn nhng my khng khi ng)

- Kim tra t in- Kim tra ga (tha qu nhiu ga)- Kim tra in p (Ch cc trng hp o khi khng ti in p vn nhng khi my nn khi ng in p tt nhiu)- Khi cc yu t trn khng c vn g th my nn b kt c.

b) Khc phc- Th dng t khi ng u song song vi t ngm hoc dng t ngm ln hn (sau khi khi ng c phi thay t v gi tr

ban u.- Th x b ton b ga v khi ng my nn- Nu khng khi ng c, thay my nn.

3. My nn b yu (My nn vn chy nhng nng sut lnh gim. p sut ht cao, p sut nn thp, dng in thp)Kim tra- Khi ng cc ngoi sau khi tho dy in qut gi. Nu thy p sut, dng in khng tng th my nn b hng- Kim tra nhit ng y. Nu di 50 C -> My nn hng-o dng in. Nu dng thp (khong nh mc) -> My nn hng

- Th tin hnh thu ga (ng van y v chy my nn). Nu p sut ht khng gim hoc gim t -> My nn hngSa cha- Thay th my nn mi- Ch : Trong trng hp my nn b chy cun dy hoc b hng phn c (ht, nn yu) th kh nng cc cht bn tora t my nn theo ga i vo h thng. Trc khi thay my nn phi v sinh bn trong h thng c bit l cp, phin lc

Thc hin bi

iu ha nhit i d (RAC)

Nid

7. My khng lnh Thi gian Dec 2010


33/103




My mt lnh hon ton

ng h thang kim tra t hoc thangRx100K

* o hai cc ( C - H ).

- Bnh thng : in tr gim sau tng dn

- Khng bnh thng : in tr v cngln, rt nh hoc khng i

5. Hng t in my nn

c

F

H

6. Hng r-le bo v (OLP)

Thc hin bi

iu ha nhit i d (RAC)

Nid

7. My khng lnh

Thi gian Dec 2010


34/103




My mt lnh hon ton

Linh kin ny bao gm in tr dng

ta nhit vo thanh lng kim khi xy raqu dng.

Nhit ng / ct 115 5 ct

93 5 ng

Cc im kim tra khi OLP ct

-in p (T kh, hng)- T in- Dn nng nght bi bn- Tc , nght cp, phin lc

Trong trng hp ny OLP hot dng bnhthng

kim tra chnh xc OLP phi o khimy ngui

OLP bnh thng : 0OLP khng bnh thng : in tr vcng ln.

6. Hng r-le bo v (OLP)

in tr

Tm lng kimTip im ng

Tip im tnh

Thc hin bi


Nidung

7. My khng lnh

Thi gian Dec 2010


35/103




My mt lnh hon ton Dng ng h vn nng thang VAC 300o in p cp cho my nn v qut gi t

hp iu khin (PCB) ca cc trong

Bnh thng: bng in p ngunHng: Khng c in p

Ch : Khi o phi chy my ch lmlnh vi ci t nhit ph hp

7. PCB cc trong khng cp in cho my nn

Thc hin bi


Nidung

7. My khng lnh

7 1 Mt l h h t

Thi gian Dec 2010


36/103



LG Electronics VietnamSVC Dept. / Field Supporting Team 28/94


My mt lnh hon ton Dng ng h vn nng thang VAC 300o in p cp cho my nn v qut gi t

hp iu khin (PCB) ca cc trong

Bnh thng: bng in p ngunHng: Khng c in p

Ch : Khi o phi chy my ch lmlnh vi ci t nhit ph hp

Sau khi kim tra u ra trn cc trong,tip tc o in p trn cu u ca ccngoi. Nu khng c in trn cc ngoi cth t dy hoc chm mt

Xc nh tng nguyn nhn v x l.

Ch :C th o thng mch bng cchchp cc u dy v o tng cp mt pha cc trong hoc cc ngoi.

8. t dy in t cc trong ra cc ngoi

Thc hin bi

G / S C


Nidung

7. My khng lnh

7 1 Mt l h h t

Thi gian Dec 2010


37/103



LG Electronics VietnamSVC Dept. / Field Supporting Team 29/94


My mt lnh hon ton Khi van ng dng ga khng lu thng vmy mt lnh hon ton

- Dng mt quan st nu li van nm sutrong van th van ang trng thi ng

M van, ch khong 5 pht cho n khicn bng v khi ng my.

Ch :- m van dng cha lc nng vn ngcchiu kim ng h.- ng van dng cha lc nng vnthun chiu kim ng h.

9. Van chn cc ngoi khng m

< Van 3 ng >

Ti cc trong

Thc hin bi

LGEVN / SVC D t


Nidung

7. My khng lnh

7 1 Mt lnh hon ton

Thi gian Dec 2010

Th hi bi


38/103




My mt lnh hon ton 10. My b r ga Tham kho trang 34 thm chi tit

Khi sa cha, lun thc hin vic ni rc

co theo nguyn tc sau.

t thng tm 2 u rc co (u c

u ci) sau dng tay vn trc. Ch

dng c l (m lt) vn cht

Lc vn rc co: tham kho tiu chun

sau (JIS)

ng knh Tiu chun JIS6.35 8.6~9.0

9.52 12.6~13.0

12.7 15.8~16.2

15.88 19.0~19.4

Thc hin bi

LGEVN / SVC Dept


Nidung

7. My khng lnh

7 1 Mt lnh hon ton

Thi gian Dec 2010

Thc hin bi


39/103




My mt lnh hon ton 10. My b r ga Tham kho trang 34 thm chi tit

Khi sa cha, lun thc hin vic ni rc

co theo nguyn tc sau.

t thng tm 2 u rc co (u c

u ci) sau dng tay vn trc. Ch

dng c l (m lt) vn cht

Lc vn rc co: tham kho tiu chun

sau (JIS)

ng knh Tiu chun JIS6.35 8.6~9.0

9.52 12.6~13.0

12.7 15.8~16.2

15.88 19.0~19.4

Thc hin bi


LGEVN / SVC Dept


Nidung

7. My khng lnh

7 1 Mt lnh hon ton

Thi gian Dec 2010

Thc hin bi


40/103


10. My b r ga (tip theo trang trc)

1. Hi khch hng nm bt thng tin v tnh trng v hin tng ca hng hc. 2. Khoanh vng v phn on khu vc hng da trn cc nguyn tc sau y

a. My mt lnh nhanh im r ga ln, my mt lnh chm im r ga nh.b. Ti im r ga bao gi cng c du hoc mng du trn b mt ngc. Trng hp my mi lp, sau khi lp t vn lnh nhng vai ngy sau mt lnh th kh nng li lp t rt cao, sau l

cc trong. Kh nng r ti cc ngoi rt thp v R22 c nht trong cc ngoi. Nu r ga cc ngoi th khng lnh hockm lnh ngay sau khi lp t

d. Nu my chy c thi gian di sau mt lnh nhanh, u tin kim tra phn cao p (cc ngoi) trc, mt lnh lu utin kim tra phn thp p trc.

e. Khi kim tra r ga, phi dng my hoc chy qut gi dn lnh kh mi c th nhn thy du trn b mt dn v ng. Khidn cn t rt kh nhn thy du pht hin ch r ga.

f. Khi kim tra r ga bng bt x phng, nu kim tra phn thp p th my phi trng thi tt. Lc ny p sut cao s ddng tm im r ga hn. Nu im r ga nghi ng phn cao p th c th kim tra khi chy my tng p sut ln caos d dng hn.

g. Cc im thng xy ra r r ga nh saua. Ch ni ng ca phn lp tb. Ch un ng ca phn lp t c bn knh nhc. Cc mi hn trong my ti cc v tr ng c s rung ng trong khi chyd. Cc im ni u dn nnge. Cc im c s tip xc ca ng vi cc linh kin khc nh dy in, ng ng, v my (y l li ca nh sn xut)

f. Cc im ni ca cc ng c ng knh khc bit nhau nhiu, c bit l cc im ni ca cc ng nh (D3, D4) vicc ng c ng knh ln.Ch

Khi r ht ga hoc cha ht nhng khi my nn chy, p sut trong h thng nh hn khng (p sut m) th sau khi sa chaphi ht chn khng trc khi np gaKhi r t ga (khi chy p sut cn trn khng p sut dng) th sau khi sa cha ch cn x kh l c.

LGEVN / SVC Dept.g g ( ) g 7.1 Mt lnh hon ton Thc hin bi

LGEVN / SVC Dept


Nidung

7. My khng lnh

7 2 My lnh yu

Thi gian Dec 2010

Thc hin bi


41/103


LGEVN / SVC Dept.7.2 My lnh yu


My lnh yu 1. Ci t nhit v tc qut khng hp l Chn tc qut highChn nhit thp hn ci t ban u

2. Dn lnh v li lc gi b nght bn

V sinh li lcV sinh dn lnh bng kh nn hoc bmnc p lc cao.

3. Qut gi cc trong chy sai tc Dng iu khin thay i tc qut vkim tra xem tc m t c thay ikhng (cm nhn tc gi hoc dngthit b o tc )

Ch :C th dng n ca in thoi chiu vo cnh qut v thay i tc ng thi quan st bng ca cnh qut

nh gi c chnh xc hn.* Vi m t chy t phi kim tra in dungca t in trc.

Nu khng iu khin c m t ,kim tra v thay th PCB hoc m t

Thc hin bi

LGEVN / SVC Dept


Nidung

7. My khng lnh

7.2 My lnh yu

Thi gian Dec 2010

Thc hin bi


42/103


LGEVN / SVC Dept.7.2 My lnh yu


My lnh yu 4. Cc thermistor (sensor) b hng dn n ngct my nn sm hoc khng ng cho my nn

chy.

Kim tra gi tr sensor nhit phngKim tra gi tr sensor nhit ng dn

lnhKim tra gi tr sensor nhit dn nng

Ch :C th kim tra sensor bng cch in tr khi my dng hoc in p mtchiu trn sensor khi my ang hot ng.Gi tr ca in tr v in p xem trongphn ph lc

Thc hin bi

LGEVN / SVC Dept.


Nidung

7. My khng lnh

7.2 My lnh yu

Thi gian Dec 2010

Thc hin bi


43/103


LGEVN / SVC Dept.y yu


My lnh yu 5. Dn nng gii nhit km dn n gim nngxut lnh ca my.

Kim tra khong cch lp t. Nu khngx l c ngh khch hng chuyn vtr cc nng n ch khc

Loi b cc chng ngi vt xung quanhdn nng.

Khng khng gian

trao i nhit

Qu nhiu vtcn xung

quanh dnnng

V tr, khong cch lp t ng

Ch : kch thc di y ch pdng trong iu kin bnh thng (mylp n chic, khng kh lu thng tt)

50~70cm

10cm hay ln hn

Gi

Vt cn

Thc hin bi

LGEVN / SVC Dept.


Nidung

7. My khng lnh

7.2 My lnh yu

Thi gian Dec 2010

Thc hin bi


44/103


py y


My lnh yu 5. Dn nng gii nhit km dn n gim nngxut lnh ca my.

Kim tra, v sinh dn nng bng kh nnhoc bm nc.

Dn nng bnght bn

6. Cng sut my khng ph hp vi kch thcphng.

LGEVN / SVC Dept.


Nidung

7. My khng lnh

7.2 My lnh yu

Thi gian Dec 2010

Thc hin bi


45/103


py y


My lnh yu Loi b cc vt cn trn ng gi cctrong

Cc trong treo qu cao lm gim lulng gi do tr lc ln

H thp cc trong tng lng gi

Phng c qu nhiu ca s hoc ca squ ln, nhiu thit b ta nhit.

Lp rm ph hp cho ca s gim tn

tht nhit

Tham kho phn la chn cng sutmy v tnh n ph ti nhit thc t gii thch cho khch hng hoc ngh lpt thm my.

Thng s c bn khi my tt

* chnh lch nhit : 10~12 * p sut ht : 4,5 ~ 5,5kg/cm2(o ch qut high

6. Cng sut my khng ph hp vi kch thcphng, Cc trong treo qu cao, nhiu vt cn

LGEVN / SVC Dept.


Nidung

7. My khng lnh

7.2 My lnh yu

Thi gian Dec 2010

Thc hin bi


46/103



My lnh yu 7. My b r ga, thiu ga

p sut ga tiu chun : 4.5 ~ 5.5Kg/* 1/ = 14.22 psi* 1mpa = 10.2kg/

Ch : p sut ga ph thuc vo rt nhiu

yu t- Nhit phng- Nhit mi trng (dn nng)- Tc qut gi (cc trong)

Thng thng nu my ga th saukhong 20 ~ 30 pht vn hnh, ng htphi mt lnh

My tha ga khi dn nng, nng qumc bnh thng v dng in ln hngi tr nh mc.

Tham kho phng php sa cha trongphn my mt lnh hon ton

Sau khi khc phc ch r ga, np b xungga cho my (xem thm phn phng phpnp ga)

LGEVN / SVC Dept.


Nidung

7. My khng lnh

7.2 My lnh yu

Thi gian Dec 2010

Thc hin bi


47/103



My lnh yu 8. My b nght cp Hin tng1. Dn nng nng hn bnh thng2. p sut ht thp

3. My nn nng hn bnh thng. C thr-le nhit ca my nn ng - ct nhk

4. Dng in cao hn gi tr nh mc5. p sut ht thp6. Khi np ga b sung, p sut ht tng

chm7. My km lnh, dn lnh khng t ht

Sa cha1. X b ton b ga trong h thng2. Nh mi hn u cp ni vi van y3. Dng n hn kh nng ng cp4. Dng ni-t thi ng. Nu khng c

ni-t c th khi ng my nn (van ht trng thi m) y ht cn bn rangoi

5. Hn u rc-co kim tra li tr lcca cp (gi tr tr lc thng t

80~100 PSI). Trng hp tr lc vncao th thay cp mi

6. Hn li ng cp v np ga (xem thmphn np ga)

LGEVN / SVC Dept.


Nidung

7. My khng lnh

7.2 My lnh yu

Thi gian Dec 2010

Thc hin bi


48/103



My lnh yu 9. Khong cch cc trong v cc ngoi qu xa,hoc chnh lch v cao gia cc trong v cc

ngoi qu ln.

Tham kho bng di bit thm v khongcch cho php v lng ga np thm cho myCh : Bng ny ch c gi tr tham kho. Thngs chnh xc cn kim tra ti liu k thut catng model

Trong trng hp my lp qu xa hocchnh lch cao ln cn t vn khch

hng thay i v tr lp t.

Din tch(m2)

Khong cch (m) Ga b sung (g/m)

tiuchun Ln nht

tiuchun Ln nht

16 (9K) 5 10 20 2523 (12) 5 10 20 25

29 (18K) 5 15 20 3039 (24K) 5 20 40 45

49 5 20 40 45

LGEVN / SVC Dept.


Nidung

8. My khng si

Phng php kim tra & x l

Thi gian Dec 2010

Thc hin bi


49/103



My khng si

* Qut gi cc trong ch hot ng khi nhit dn cao hn 28 C

1. Bt my, chn ch si2. Ci t nhit (cao hn nhit

phng t nht 2 )3. Ch khong 3~5 pht, nu khng thycc ngoi hot ng kim tra ccsensor nhit phng v ng (thamkho phn ph lc)

4. Kim tra in p cp cho my nn, qutgi cc ngoi v van o chiu trn cuu in ca cc trong

5. Nu khng c in kim tra PCB cctrong (ch cc tip im v ngun

nui cho cc r-le). Thay th PCB cctrong nu cn thit.

6. Nu c in ti cu u cc trongkim tra thng mch dy in ni tcc trong ra cc ngoi.Kim tra dy in bn trong ccngoi.Kim tra t in cc ngoiKim tra cun ht v van o chiu

Ch :Nu cc ngoi c chy v ngt saumt khong thi gian th thng la dotc cp ph hoc van mt chiu cacc ngoi.

LGEVN / SVC Dept.


Nidung

9. My khng chy

9.1 My b mt ngun

Thi gian Dec 2010

Thc hin bi


50/103



My khng c ngunvo

1. Kim tra at-t-mt o in p u vo ca t-t-mt. Nukhng c kim tra phn ngun ti nh

khch hng

2. Kim tra cu ch, PCB (cc trong, ngoi, dyin)

Nu cu ch v mch in c hin tng chyth phi kim tra cc vn sau:- Kim tra chp mch my nn, m t ccngoi, dy in t cc trong ra cc ngoi- Kim tra chp mch m t, dy in cctrong.

Thay th linh kin v sa cha ty theonguyn nhn

Tham kho ph lc Kim tra PCB

Ch : Trong iu kin Vit nam rt nhiutrng hp cp ngun sai. Trc khi tinhnh sa cha cn kim tra in p ngun.

Ngun mt pha: thang VAC300 o

gia 2 dy ngun (L) v (N) 220V (15%)

Ngun 3 pha: thang VAC600 o lnlt tng dy pha (R), (S), (T) vi dytrung tnh (N) 220V(15%)

FUSE

LGEVN / SVC Dept.


Nidung

9. My khng chy

9.2 Hng iu khin t xa

Thi gian Dec 2010

Thc hin bi


51/103



Khng iu khin cbng iu khin t xa

1. Bt ngun (at-t-mt) v kim tra xem c tingku beep hoc chiit khng

Nu khng c m thanh khi bt nguntham kho phn My b mt ngun

Nu c m thanh pht ra t cc trong thtin hnh cc bc sau y:1. Chy my ch cng bc (sdng cng tc trn cc trong) nu mychy bnh thng th hng iu khin t xahoc v mt nhn (PCB Display)

2. Kim tra iu khin t xaC th kim tra iu khin t xa bng in

thoi di ng:- Bt camera ca in thoi ding

- Hng trc tip iu khinvocamera ca in thoi v nhn cc ntchc nng ca iu khin. Nu thy mnhnh in thoi c hin chm sng l iukhin cn hot ng.Khi iu khin t xa khng hot ng

Kim tra pin (ch tnh trang pin lungy lm t v mch v sinh)3. Kim tra mt nhn v dy in t PCBdisplay ti PCB chnh Thay th nuCn thit.

LGEVN / SVC Dept.


Nidung

10. Ting n

My n khi hot ng

Thi gian Dec 2010

Thc hin bi


52/103

Ti liu hun luyn k thut my lnh LG Electronics Viet Nam5244/94


My b n 1. Cc trong ku Kik Kik KikTak Tak Tak - Kim tra ma st gia trc m t chao vcnh vane

- Dng mt theo di cnh vane ln , xungv kim tra cc ting n bt thng, xcnh nguyn nhn v x l (Thay m tchao nu cn thit)

2. Cc trong ku Dul Dul Dul Kim tra qut cc trong: Khp ni / V nan/ Cc vt th l lm kt, chm, bi bniu chnh khp ni, v sinh, thay cnhqut, vv.

3. Cc trong ku Shik Shik Shik, Dul Dul Dul Kim tra, v sinh li lc gi

4. Cc trong ku Shak Shak Shak Kim tra, sa cha ch un ng ng

5. Cc trong ku Woong~ Kim tra m t cc trong (nghe cmnhn)Thay th m t nu cn thit

LGEVN / SVC Dept.


Nidung

10. Ting n

My n khi hot ng

Thi gian Dec 2010

Thc hin bi


53/103



My b n 6. Cc ngoi ku Woong Woong Woong Kim tra rung ng ca my nn-iu chnh gi treo cc ngoi-iu chnh cn bng cc ngoi-iu chnh hoc lp b sung cc chncao su gim chn

Ch : My chy trong tnh trng thiu/thaga cng gy ra cc rung ng v ting nbt thng. Trc khi cn chnh hy kimtra ga trong my.

7. Cc ngoi ku Ta Da Dak Kim tra qut gi cc ngoiSa cha, thay th nu cn thit

8. Cc ngoi ku Chi~ing Kim tra rung ng ti cc gc vung ccngoi

iu chnh gc, vn cht vt, dn thm caosu gim chn

Ngy thit lp 2010/12/22

Thit lp bi LGEVN / SVC Dept.


Nidung

11. Phng c mi l

X l mi trong phng


54/103



My c mi l 1. Mi sn phm mi2. Mi do cc cht thm (nc xt phng)

Gii thch cho khch hng v bt thng gi kh mi. Trng hp khng c qutthng gi thig m ht ca v dng qutthng kh mi.

3. Mi do cc cht bn t lu ngy trong dn lnh V sinh dn lnh, li lc gi

4. Mi xng ngc vo phng t ng nc thi Chuyn v tr ng nc thi

5. Mi t ni tht, keo dn sau khi xy dng Gii thch cho khch hng v bt thng gi kh mi. Trng hp khng c qutthng gi thig m ht ca v dng qutthng kh mi.

LGEVN / SVC Dept.


Nidung

12. My iu ha Inverter

12.1 Bng m li cc trong

Thi gian Dec 2010

Thc hin bi


55/103


M

li M t

Hin th

Cc trong Cc ngoi

LED1 LED2

LED1

(Red)

LED2

(Green)01 Thermistor nhit khng kh cc trong t / chp 1 Ln - -

02 Thermistor ng u vo cc trong t / chp 2 Ln - -

05 Li truyn tn hiu (Cc trong Cc ngoi) 5 Ln - -

06 Thermistor ng u ra cc trong t / chp 6 Ln - -

09 Li IC EEPROM (Indoor Unit) 9 Ln - -

10 Li qut cc trong kt (qu ti) 1 Ln - - -

12 Thermistor ng gia dn cc trong t / chp 1 Ln 2 Ln - -

LED1Hng chc

LED2Hng n v

LED1Hngchuc

LED2Hngdonvi

LED1Hng chcLED2Hng n v

Kiu 3

Kiu 2

Kiu 4

Kiu 1

LGEVN / SVC Dept.


Nidung


12.2 Bng m li cc ngoi

Thi gian Dec 2010

Thc hin bi


56/103


M li M t

Li hin th

Cc trong Cc ngoi

LED1 LED2 LED1 LED2

21 Li qu ti (hng comp hoc mch ngun DC) 2 Ln 1 Ln 2 Ln 1 Ln22 Li qu dng (Dng AC vt qu gi tr nh mc) 2 Ln 2 Ln 2 Ln 2 Ln

23 Li in p DC thp hn gi tr nh mc 2 Ln 3 Ln 2 Ln 3 Ln

25 in p dy cao / thp hn gi tr nh mc 2 Ln 5 Ln 2 Ln 5 Ln

26 Li my nn hoc mch ngun my nn 2 Ln 6 Ln 2 Ln 6 Ln

27 Li qu dng ca mch chuyn i in AC DC 2 Ln 7 Ln 2 Ln 7 Ln

28 Li in p DC cao hn gi tr nh mc 2 Ln 8 Ln 2 Ln 8 Ln

29 My nn inverter b qu dng (qu ti) 2 Ln 9 Ln 2 Ln 9 Ln

31 Li thp dng (Dng khng t gi tr nh mc) 3 Ln 1 Ln 3 Ln 1 Ln

32 Nhit ng x my nn inverter cao 3 Ln 2 Ln 3 Ln 2 Ln

40 Li Sensor bin dng (t / Chp) 4 Ln - 4 Ln -

41 Li thermistor ng x my nn inverter (t / Chp) 4 Ln 1 Ln 4 Ln 1 Ln

44 Li thermistor khng kh dn nng (t / Chp) 4 Ln 4 Ln 4 Ln 4 Ln

45 Li thermistor gia dn nng (t / Chp) 4 Ln 5 Ln 4 Ln 5 Ln

48 Li thermistor u ra dn nng (t / Chp) 4 Ln 8 Ln 4 Ln 8 Ln

53 Li kt ni tn hiu (Outdoor Unit Indoor Unit) 5 Ln 3 Ln 5 Ln 3 Ln

60 Li IC EEPROM 6 Ln - 6 Ln -

61 Nhit dn nng cao 6 Ln 1 Ln 6 Ln 1 Ln62 Nhit IC inverter cao 6 Ln 2 Ln 6 Ln 2 Ln

63 Nhit dn nng thp 6 Ln 3 Ln 6 Ln 3 Ln

65 Li thermistor cnh tn nhit IC inverter (t / Chp) 6 Ln 5 Ln 6 Ln 5 Ln

Kiu 1: Loi 2 led

Led 1 (Xanh)

hng n vLed 2 ()Hng chc

Kiu 2 Loi 1 led

1 Led ()

2giy

1giy

V d li 21

LGEVN / SVC Dept.


Nidung


12.3 Phng php kim tra, sa cha

Thi gian Dec 2010

Thc hin bi


57/103


TH2

TH4

ng hing lng

Li Linh kin Nguyn nhn Mc kim tra

CH01 Sensor nhit phng Chp / t

- Kim tra tip xc gic cm- Kim tra gi tr in tr

CH02 Sensor nhit ng vo cc trong Chp / tCH06 Sensor nhit ng ra cc trong Chp / t

CH12 Sensor nhit gia dn cc trong Chp / t

* 25 C, gi tr in tr ca cc thermistor nh sau: TH1 : 10K TH2 : 5K TH3 : 5K

TH4 : 5K

* Gi tr cc sensor thay i theo nhit . Tham khoph lc bit thm chi tit.

PHNG PHP O

1. Tho gic cm ra khi PCB2. t ng h o thang o in tr

3. o gi tr in tr v so xnh vitiu chun

Ch : Khi gi tr sensor bnh thngm my vn bo li th PCB b hng Thay th PCB

CH01; CH02; CH06; CH12

LGEVN / SVC Dept.


Nidung



Thi gian Dec 2010

Thc hin bi


58/103


CH05; CH09

Li Din gii Nguyn nhn im kim tra

CH05

CH09

Li truyn tnhiu gia cctrong v cc

ngoi

Li kt ni giaPCB chnh v

PCB ph

Khng c tn hiu quali gia cc trong vcc ngoi trong thigian lu hn 3 pht

t mch hoc intr tip xc ln

1. Kim tra in p ngun (cc trong v cc ngoi)2. Kim tra tnh trng u ni ca dy tn hiu, tnh trng tip

xc ca gic cm3. Kim tra cch in ca dy tn hiu vi mass (Bnh

thng > 2M)4. Kim tra tnh trng ni mass ca cc trong v cc ngoi.5. Kim tra chiu di ca dy tn hiu. Nu di hn 50m phi

thay th dy to hn v tch ring khi cc dy ngun trnh nhiu.

6. Kim tra cc dy ngun gn vi ng i ca dy tnhiu. Cc dy ngun c dng in ln i song song vidy tn hiu c th gy nhiu lm yu tn hiu.

7. Kim tra PCB (phn mch tn hiu) ca cc trong v ccngoi.

1. Kim tra tnh trng t dy, tip xc ca gic cm

LGEVN / SVC Dept.


Nidung



Thi gian Dec 2010

Thc hin bi


59/103


CH10


CH10 M t cc trongkhng hot

ng

M t ngng hotng lu hn 1 pht

1. Kim tra tnh trng kt c ca m t (dng tay)2. Kim tra tnh trng tip xc in ca gic cm m t

3. Kim tra tnh trng thng mch ca dy in t PCB ram t (ch kim tra tnh trng t ngm bn trong bngcch dng ng h o thng mch tng dy mt).

4. Kim tra tnh trng m t (Dng m t mi th bngcch ngoi v ni vi gic cm, khi ng my. Num t khng chy, chuyn sang bc tip theo)

5. Kim tra tnh trng PCB

LGEVN / SVC Dept.


Nidung



Thi gian Dec 2010

Thc hin bi


60/103


CH21


CH21 Dng in camy nn cao

hn gi tr nhmc

1. My nn b kt2. t, chp mch

bn trong my nn3. My vn hnh

trong iu kin quti

4. Hng PCB

1. Kim tra tnh trng lp t, tnh trng gii nhit cc nng,tnh trng bp (gp ng). Kim tra khong cch gia cctrong v cc ngoi. Kim tra tnh trng tha, thiu ga.Kim tra tnh trng ng / m ca van chn cc ngoi.

2. Kim tra tnh trng kt ca my nn. Kim tra in trcch in, tnh trng t / h mch cun dy, in tr cccun dy.

3. Kim tra tnh trng u dy U, V, W c b ngc khng4. Kim tra tnh trng cc gic cm ca PCB

5. Kim tra phn ngun inverter IPM (Chp, chy)6. Kim tra cch in cc chn u vo ca IPM

7. Kim tra tnh trng lch pha (sai lch cho php nh hn2A khi my nn chy)

t thang oin tr o gia

cc chn uvo ca IPM khi

tt ngun

LGEVN / SVC Dept.


Nidung



Thi gian Dec 2010

Thc hin bi


61/103


CH22


CH22 Dng in xoaychiu u vocao hn gi tr

nh mc

1. in p ngun thp2. My b qu ti (Gii

nhit km, Dnnng b bn, thaga, vv)

3. Hng PCB

1. Kim tra in p ngun (190 ~ 260VAC)2. Kim tra tnh trng lp t (ging CH21)3. Kim tra tnh trng kt ca qut gi (cc trong, ngoi)4. Kim tra mch cm nhn dng in AC u vo

-t ng h thang o in p DC-o in p ti cc im nh hnh nh minh ha- Gi tr in p nm trong khong 2,5V (+/-0,2V). Nu kt

qu o nm ngoi khong ny th PCB b hng. Thay th PCB miCh : Thc hin php o khi c ngun nhng khng bt my(ch stand by hay cn gi l ch ch)

LGEVN / SVC Dept.


Nidung



Thi gian Dec 2010

Thc hin bi


62/103


CH23


CH23 in p mtchiu thp hngi tr gi hn

140VDC

1. in p ngun thp2. Hng PCB

1. Kim tra in p ngun (190 ~ 260VAC)2. Kim tra in p mt chiu. Gi tr in p ny phi nm

trong khng 280 ~ 310VDC.3. Kim tra mch cm nhn in p mt chiu (2,4 ~

2,8VDC) trn PCB

Nu kt qu o khng nm trong khong gi tr trn th PCB b hng.Thay th PCB mi

LGEVN / SVC Dept.


Nidung



Thi gian Dec 2010

Thc hin bi


63/103


CH26


CH26 Dng in banu ca my

nn vt gi trgii hn hockhng c tnhiu u vo

ca mch cmnhn tnh trnghot ng ca

my nn

1. My nn khnghot ng

2. My hot ngtrong tnh trng quti.

3. Hng PCB

1. Kim tra tnh trng lp t, tnh trng gii nhit, cc qutgi cc trong, ngoi.

2. Kim tra tnh trng kt c, chm mt, in tr cun dyhoc t dy ca my nn.

3. Kim tra tnh trng gic cm ca my nn4. Kim tra IPM (tham kho CH21)5. Kim tra mch cm nhn dng in (o nh hnh nh

minh ha di yCh : Thc hin php o khi my trng thi stand by (ch)

Nu gi tr in p nm ngoi khong 2,5VDC (+/-0,2) thPCB b hng Thay th PCB mi.

LGEVN / SVC Dept.


Nidung



Thi gian Dec 2010

Thc hin bi


64/103


CH27


CH27 Li qu dng ti

b phn chuyni in p xoaychiu thnh mt

chiu(AC DC)

1. My hot ng

trong tnh trng quti.

2. Hng cun cmhoc thng skhng nm trongkhong cho php

1. Kim tra tnh trng lp t, tnh trng gii nhit, cc qut

cc trong, ngoi2. Kim tra thng s cun cm (10A / 26,8mH)3. Kim tra tnh trng chp mch ca b phn chuyn i

in ACDC ti gic tn hiu vo

LGEVN / SVC Dept.


Nidung



CH29

Thi gian Dec 2010

Thc hin bi


65/103


CH29


CH29 Li qu dng

ca my nn

1. My hot ng


2. My nn b kt c3. Hng PCB

1. Kim tra tnh trng lp t, tnh trng gii nhit, ga

2. Kim tra tnh trng kt c, tnh trng u dy my nn(ngc pha, mt pha, tip xc)

3. Kim tra cch in (>2M)4. Kim tra mch cm nhn dng in theo hnh nh di

Ch : o trng thi stand by (Bt ngun nhng khng

chy my).Gi tr tiu chun V=2,5VDC +/-0,2Nu ngoi khong ny th PCB b hngThay mi

LGEVN / SVC Dept.


Nidung

12. My iu ha Inverter12.3 Phng php kim tra, sa cha

CH32

Thi gian Dec 2010

Thc hin bi


66/103


CH32


CH32 Nhit ng x

ca my nninverter cao hngi tr gii hn

1. My hot ng


2. Thiu hoc r ga3. Hng sensor4. LEV van hot ng

khng bnh thng

1. Kim tra tnh trng lp t, tnh trng gii nhit, ga

2. Kim tra qut gi cc ngoi (m t, t in) 3. Kim tra r ga, thiu ga4. Kim tra tip xc gic cm LEV, tnh trng lp rp LEV5. Kim tra tnh trng IPM (tham kho CH21)6. Kim tra tnh trng lp rp ca sensor, tip xc ca gic

cm. o gi tr in tr v so xnh vi gi tr tiu chun(200K +/-10% 25 C)

7. Kim tra cch in ca sensor vi mass (>1M)

LGEVN / SVC Dept.


Nidung


CH40

Thi gian Dec 2010

Thc hin bi


67/103


CH40


CH40 Li mch cm

nhn dng inca PCB

1. Linh kin ca mch

cm nhn dngin ca PCB bhng

1. Kim tra tnh trng cc gic ngun vo

2. Kim tra mch cm nhn dng in.

o trng thi bt ngun nhng khng chy my

Gi tr trong php o 1 V=2,5 +/-0,2VDCGi tr trong php o 2 V=2,5 +/-0,2VDCNu kt qu o khng nm trong phm vi trn th mch cmnhn dng ca PCB b hng Thay mi PCB

LGEVN / SVC Dept.


Nidung


CH41/44/45/65

Thi gian Dec 2010

Thc hin bi


68/103


CH41/44/45/65


CH41

CH44

CH45

CH65

Sensor ng x

my nninverter

Sensor gi ccngoi

Sensor ng ccngoi

Sensor cnh tnnhit IC inverter

Sensor b hng hoc

(t, chp) gic cmkhng tip xc

1. Kim tra tnh trng lp rp v cc gic cm

2. Kim tra gi tr in tr ca cc sensor theo tiu chun.

Cc gi tr trong bng l o 25 C. Tham kho ph lc c cc gi tr in tr theo nhit

Sensor ng x my nn INV 200K

Sensor gi cc ngoi 10K

Sensor ng cc ngoi 5K

Sensor cnh tn nhit IC 10K

LGEVN / SVC Dept.


Nidung


CH53

Thi gian Dec 2010

Thc hin bi


69/103


CH53


CH53 Li khng c tnhiu t cc ticc ngoi trongtrong thi gianlu hn 3 pht

1. Cc trong b mtngun2. Khng c (t)

ng truyn tnhiu t cc trongti cc ngoi

3. Tn hiu b nhiu docc tc ng bnngoi

4. Mch truyn tn

hiu gia cc trongv cc ngoi trongPCB b hng

1. Kim tra ngun ca cc trong2. Kim tra tnh trng hot ng ca cc trong3. Kim tra ng tn hiu (thng mch, chm mt, chiu

di)4. Kim tra tnh trng ni mass ca cc trong, cc ngoi5. Kim tra cc ng dy ngun gn vi dy tn hiu. Cc

dng in ln gn dy tn hiu c th lm nhiu v mybo li

6. Kim tra cc gic cm ca dy tn hiu7. Kim tra mch truyn / nhn tn hiu ca PCB cc trong

v cc ngoi.

LGEVN / SVC Dept.


Nidung


CH60


70/103


CH60


CH60 Li IC EEPROM

ca cc ngoi

1. EEPROM b sai loi

hoc khng lp.2. EEPROM b hng.3. EEPROM lp

khng ng.4. Mi hn chn

EEPROM khngtip xc.

1. Kim tra tnh trng lp rp ca EEPROM v cc phn lin

quan trong PCB. Ch kim tra hng (chiu lp) caEEPROM khi lp qua chn .

EEPROM

LGEVN / SVC Dept.


Nidung


CH61

Thi gian Dec 2010

Thc hin bi


71/103


CH61


CH61 Nhit dn

nng cao hngii hn

1. Qut dn nng b

hng2. Dn nng trao i

nhit km3. Sensor b hng4. Van LEV hot ng

khng bnh thng5. Tha ga

1. Kim tra tnh trng lp t (tham kho phn trc)

2. Kim tra tnh trng tha ga (o p sut, dng in cnh gi chnh xc.

3. Kim tra tnh trng lp rp v hot ng ca van LEV4. Kim tra sensor o in tr v so xnh vi gi tr tiu chun o cch in ca sensor vi mass (phi > 1M)

LGEVN / SVC Dept.


Nidung


CH62

Thi gian Dec 2010

Thc hin bi


72/103



CH62 Nhit cnh

tn nhit ICinverter cao qu

gii hn

1. My b qu ti

2. Tnh trng lp rpcnh tn nhit ICkhng tt

3. Hng sensor cmbin nhit


2. Kim tra tha ga3. Kim tra tnh trng lp rp (tip xc) gia cnh tn nhit

v IC trn PCB (ch lp m tn nhit di cnh)4. Kim tra gi tr in tr ca sensor (nh hnh di) Gi tr in tr R=7K +/-10%

LGEVN / SVC Dept.


Nidung


CH67

Thi gian Dec 2010

Thc hin bi


73/103



CH67 M t qut gi

cc ngoi khnghot ng

1. M t b kt

2. Dy in, gic cmkhng thng mch

3. Hng m t4. Mch iu khin

m t b hng

1. Kim tra tnh trng kt ca m t

2. Kim tra tnh trng dy in, gic cm ni t PCB ra mt (Ch hin tng gic cm khng tip xc do my lpt lu ngy).

3. Kim tra tnh trng m t t ng h thang o in p phn cc diode o in p gia hai chn 1 v 4 ca gic cm m t Nu kt qu o nm ngoi khong 1V (+/-0,2V) th m t

b hngThay th m t

4. Nu m t khng hng, thay th PCB iu khin m t.

LGEVN / SVC Dept.


Nidung


CH21

Thi gian Dec 2010

Thc hin bi


74/103



CH21 My nn cao

dng

1. My nn b kt

2. Chp mch, tcun dy trong mynn.

3. My b qu ti4. Hng PCB


2. Kim tra tnh trng tha ga.3. Kim tra tc , t in qut gi cc ngoi.4. Kim tra tnh trng kt c ca my nn5. Kim tra tnh trng chp / t ca cun dy my nn6. Kim tra cch in my nn7. Kim tra tnh trng dy in, gic cm t PCB ti my nn8. Kim tra phn ngun IPM ca PCB9. Kim tra chp mch u vo ca IPM10.Kim tra lch pha (sai lch cho php l 2A)

LGEVN / SVC Dept.


Nidung


CH22

Thi gian Dec 2010

Thc hin bi


75/103



CH22 Dng in xoay

chiu u vocao hn gi tr

gii hn

1. in p ngun thp

2. My b qu ti3. PCB b hng

1. Kim tra in p ngun (190 ~ 260VAC)

2. Kim tra tnh trng tha ga.3. Kim tra tnh trng lp t4. Kim tra tnh trng gii nhit dn nng5. Kim tra PCB

t ng h thang o Vdc. o in p ti mch cmnhn dng in u vo

Gi tr in p tiu chun Vdc = 2,5V +/-0,2V Nu kt qu nm ngoi khong ny th PCB b hng.

VDC

Btngun

nhngkhngchymy

LGEVN / SVC Dept.


Nidung


CH23

Thi gian Dec 2010

Thc hin bi


76/103



CH23 in p mt

chiu thp hngii hn(140Vdc)

1. in p ngun thp

2. PCB b hng

1. Kim tra in p ngun (190 ~ 260VAC)

2. Kim tra gi tr in p mt chiu sau chnh lu (thngthng t 280 ~ 310V)

3. Kim tra mch cm nhn in p mt chiu

o in p mt chiu ca mch cm nhn. Thng thngVdc = 2,5V +/-0,2V

Nu ngoi khong ny th PCB b hngThay mi

Btngun

nhngkhngchymy

LGEVN / SVC Dept.


Nidung


CH26

Thi gian Dec 2010

Thc hin bi


77/103



CH26 My nn b qu

dng hockhng c tnhiu u vo

ca mch cmnhn trng thihot ng ca

my nn

1. My nn b hng

2. My hot ngtrong tnh trng quti

3. Hng IPM ca PCB4. Hng mch cm

nhn dng lm vicca my nn

1. Kim tra tnh trng lp t, tha ga

2. Kim tra tnh trng gii nhit dn nng3. Kim tra tnh trng kt c ca my nn4. Kim tra tnh trng chp / t ca cun dy my nn5. Kim tra cch in my nn6. Kim tra tnh trng dy in, gic cm t PCB ti my nn7. Kim tra phn ngun IPM ca PCB8. Kim tra chp mch u vo ca IPM9. Kim tra mch cm nhn dng in ca PCB



Btngunnhngkhng

chymy

LGEVN / SVC Dept.


Nidung


CH29

Thi gian Dec 2010

Thc hin bi


78/103



CH29 My nn b qu

dng hoc tnhiu u vo

ca mch cmnhn trng thihot ng ca

my nn bhng

1. My nn b hng

2. My hot ngtrong tnh trng quti

3. Hng mch cmnhn dng lm vicca my nn

1. Kim tra tnh trng lp t, tha ga

2. Kim tra tnh trng gii nhit dn nng3. Kim tra tnh trng kt c ca my nn4. Kim tra tnh trng chp / t ca cun dy my nn5. Kim tra cch in my nn6. Kim tra tnh trng dy in, gic cm t PCB ti my nn7. Kim tra mch cm nhn dng in ca PCB



Btngunnhngkhng

chymy

LGEVN / SVC Dept.


Nidung


CH32

Thi gian Dec 2010

Thc hin bi


79/103



CH32 Nhit ng x

ca my nncao qu gii

hn

1. My hot ng

trong tnh trng quti

2. Thiu ga3. Sensor hng hoc

tnh trng khngtip xc ca giccm

4. Van tit lu LEVhot ng khngbnh thng.

1. Kim tra tnh trng lp t, thiu ga

2. Kim tra tnh trng gii nhit dn nng3. Kim tra gic cm ca LEV4. Kim tra tnh trng lp rp ca cun ht LEV5. Kim tra gic cm ca sensor, o cch in sensor6. o gi tr in tr ca sensor v so xnh vi tiu chun

o in in tr ca sensor. (R=200K +/-10% 25 C) Nu ngoi khong ny th PCB b hngThay mi

LGEVN / SVC Dept.


Nidung


CH40

Thi gian Dec 2010

Thc hin bi


80/103



CH40 Mch cm nhn

dng in ACu vo hocmch cm nhndng in ca

my nn bhng

1. Hng cc linh kin

ca mch cmnhn trong PCB

1. Kim tra cu u in chnh

2. Kim tra mch cm nhn dng in u vo

Bt

ngunnhngkhng

chymy

Mch cm nhndng AC

Vdc=0+/-0,2V

Mch cm nhn

dng my nnVdc=2,5+/-0,2V

LGEVN / SVC Dept.


Hintng

Ph lcKim tra my nn inverter

Thi gian Dec 2010

Thc hin bi


81/103


1. Tho gic cm khi my nn2. t ng h thang o in tr

3. o in gia cc chn my nn vi nhau4. o in tr gia cc chn my nn vi v my5. Nu gi tr in tr vth qu gi tr trong bng th

my nn b hng Thay th my nn mi.

Php o in tr

U-V 1,5~2 Ohm

V-W 1,5~2 Ohm

U-W 1,5~2 Ohm

U-Chassis Ln hn 1M

V-Chassis Ln hn 1M

W-Chassis Ln hn 1M

LGEVN / SVC Dept.


Hintng

Ph lcKim tra IPM my inverter

Thi gian Dec 2010

Thc hin bi


82/103


1. Tho gic cm khi PCB2. t ng h thang o diode

3. o in p P-U; P-V; P-W4. o in p U-Nu; V-Nv; W-Nw5. Gi tr in p tiu chun l 0,4~0,6V. Nu kt qu

o nm ngoi khong trn Thay th PCB

LGEVN / SVC Dept.


Hintng

Ph lcKim tra qut gi cc ngoi

Phng php kim tra m t qut gi cc ngoi

Thi gian Dec 2010

Thc hin bi


83/103


Triu chng m t hng- Khng hot ng, tc thp hoc rt thp.- Trc m t khng quay do hng vng bi.- C khi, mi kht t m t, Ting n ln.Phng php sa cha

- Tt ngun, tho conector, ly m t ra ngoi.-o in tr cc cun dy ca m t (Cun

chnh, cun ph, cun tc ). o cch in cacun dy vi v m t.- S dng t in cn tt kim tra tnh trng

hot ng ca m t.

LGEVN / SVC Dept.


Hintng

Ph lcKim tra my nn

Trnh t kim tra my nn

Thi gian Dec 2010

Thc hin bi


84/103


Kim tra dng khi ng Kim tra in p khi ng Kim tra ga o in tr cun dy

Kim tra cch in Kim tra dng khi ng Kim tra in p khi ngTh khi ng vi t c in

dung ln hn

LGEVN / SVC Dept.


Hintng

Ph lcKim tra t in

Chc nngTn linh kin : T in

Thi gian Dec 2010

Thc hin bi


85/103


Phng php o Phng php kim tra

Hin tng

F (m t qut)

HERM (My nn) C (chung)

y l t ngm (t chy) cho m t qut gi v my nn.Cc t ny ng thi c tc dng tng m men khi ngcho cc ng c

My nn khng khi ng v OLP ct dng vo my (c thnghe ting OLP ct tch)

ng h thang kim tra t hoc thang Rx100K

* o hai cc ( C - H ).

- Bnh thng : in tr gim sau tng dn

- Khng bnh thng : in tr v cng ln, rt nh hockhng i

c

F

H

LGEVN / SVC Dept.

iu ha nhit Gia dng (RAC)

Hintng

Ph lcKim tra OLP

Chc nngTn linh kin : O L P (bo v qu ti)

OLP l linh kin bo v dng ct dng vo my nn khi c

Thi gian Dec 2010

Thc hin bi


86/103



Triu chng hin tng

OLP l linh kin bo v dng ct dng vo my nn khi cs qu nhit v qu dng trong qu trnh vn hnh

My nn khng chy. Qut gi cc ngoi hot ng bnhthng. My iu ha khng lnh

Linh kin ny bao gm in tr dng ta nhit vo thanh lng kim khi xy raqu dng.

Nhit ng / ct 115 5 ct

93 5 ng

Cc im kim tra khi OLP ct-in p (T kh, hng)- T in- Dn nng nght bi bn- Tc , nght cp, phin lc

in tr

Tm lng kimTip im ng

Tip im tnh

OLP bnh thng : 0OLP khng bnh thng : in tr c cng ln

Reference Work methodDefect

Khc phc : Kim tra v khcLc vn yu R ga

LGEVN / SVC Dept.


Hintng

Ph lcKim tra r ga, bp ng

Thi gian Dec 2010

Thc hin bi


87/103


R ga

Phng php

im ni cc trong-cc ngoi

- Kim tra ch ni rc co- Kim tra ch loe cc ngoi

- Kim tra cc v tr ni (ng di)- Kim tra r ga ti cc van cc ngoiCh : Pha p sut thp : dng my.Pha cao p : chy my kim tra

Dn lnh

- Kim tra cc v tr hn- Kim tra ng ng cc trongCh : d pht hin r ga, hy kimtra vt du loang khi dn lnh kh(dng my hoc chy qut gi trongthi gian lm kh dn lnh)

Dn nng

- Kim tra cc im hn- Kim tra ng ng cc ngoi

Kim tra v xit li ccrc coLoe li cc u ng Thay van

Hn li cc im r cctrong v cc ngoi

Cc v tr hay xyra r ga trong cctrong

B chia ng cc trong

ng U

im kim tra

1. Cc ng U2. B chia, van ochiu3. ng x4. Cc ch un5. Cc v tr u, cuidn nng

6. Cc v tr b chmVi chi tit khc

7. Cc v tr rung ng

Phng php :

ng U, ng chia :Hn li

ng x, Van o chiu: Thay mi

Ch :

1. Trnh lm hng cc mi hnxung quanh v tr hn do nhitpht ra t m hn (dng cc vtchn).

2. Khi hn cc v tr gn van ochiu phi dng gi t bc xungquanh van trnh lm hng cc

chi tit bn trong.3. Khi hn bn trong cc ngoinn thao PCB e khng xy racc h hng trong qu trnh hn.

ng x (nn)

Khc phc :Kim tra v khcphc ty theo nguyn nhn (longloe, hn, thay van, vv)

Ch : Khi thy th cc van, phi

dung giy t bao xung quangvan trnh h hng cho cc chitit bn trong van trong qu trnhhn

Vn qu mnhhng phn loe ng R ga

Lc vn yu R ga

Lun tm kim vtdu khi kim tra r ga

Chc nng

Lm quay qut gi tun hon khng kh qua dn lnh (khi

LGEVN / SVC Dept.


Hintng Ph lc

Kim tra m t cc trong

Chi tit : M t qut gi cc trong

Thi gian Dec 2010

Thc hin bi


88/103



Triu chng, hin tng

q y q g g q (lm lnh) v dn nng (khi si)

-ng tuyt dn lnh- Khng c gi lnh thi ra- My nn khng chy (sensor ng truyn tn hiu v PCB)-n led bo li (vi mt s model)

o gi tr in tr ti cc pin (gic) nh sau

1 Vm

4 en GND

5 Trng +15V

6 Xanh FG

7 Vng Vsp

2,3 Khng c

Tiu chun4~1: (khng xc nh)4~5:20.15%4~6:2205%4~7: (khng xc nh)

LGEVN / SVC Dept.


Hintng Ph lc

Kim tra m t chao gi

Chc nngTn linh kin : M t chao gi

M t chao gi vn hnh bng ngun xung t PCB Gc m

Thi gian Dec 2010

Thc hin bi


89/103


V d v m t b n Phng php kim tra

Hin tng

- Khng iu khin c cc cnh chao gi tri/phi,ln/xung . C ting n khi cc cnh chao gi hot ng

M t chao gi vn hnh bng ngun xung t PCB. Gc mca m t c quyt nh bi s xung (tn s ngun)

- Tc ca m t c qui nh bi rng ca xung

ngun. M t chao gi dng hng gi ra t cc trongtheo nhu cu hoc vn hnh ch t ng phn phiu gi lnh

n do bnh rngm t b gy

Lm lnh

Si m

Kim tra in p cp (DC12V)

Kim tra (cm nhn) ting n khi hotng

Kim tra ch ni gia cnh gi v trc

m t

LGEVN / SVC Dept.


Hintng Ph lcKim tra ting n qut dn lnh

Triu chng

Nguyn nhn v cch khc phc

V d v qut cc trong b n

Thi gian Dec 2010

Thc hin bi


90/103


Triu chng Nguyn nhn v cch khc phc

1) Nguyn nhn : Cuc cn bng lng (tut) ra khi nan quat.

2) Khc phc : Lp cc cn bng v ng v tr v th chyqut mt vi ln kim tra

Khch hng : Qutcc trong n

Ting n1) C ting Puk Puk Puk pht ra t pha tri ca sn

phm.

Tnh trng lpt

Cccn

bng

1) Trong thc t nu qut gi b bm

bn cng gy n khi hot ng

2) Khc phc : v sinh qut, dn lnh,

phin lc.

Chc nngTn linh kin : V mch cc trong

V mch nm bn trong hp iu khin v iu khin hot

LGEVN / SVC Dept.


Hintng Ph lcKim tra PCB cc trong

Thi gian Dec 2010

Thc hin bi


91/103



Triu chng, hin tng

Kim tra in p cp cho v mch.

Khi in p bnh thng, kim tra cu ch, varistor, bin p,IC ngun, t ha, vv. Ty theo hng hc m quyt nh sacha hay thay th v mch.

V mch nm bn trong hp iu khin v iu khin hotng ca my

Hng cc gic cm, housing

Tip im r-le khng tip xc

Chc nng iu khin ca MICOM khng bnh thng

FUSE

LGEVN / SVC Dept.

iu ha nhit Gia dng (RAC)

Hintng Ph lcKim tra mt nhn v Display PCB

Chc nng v hot ngTn linh kin : V mt nhn

Nhn tn hiu t iu khin t xa v chuyn n MYCOM

Thi gian Dec 2010Thc hin bi


92/103


Phng php th nghim Trnh t kim tra

Triu chng

Khng iu khin c bng iu khin t xa

(Cc ch chy test v chy cng bc hot ng bnhthng)

Nhn tn hiu t iu khin t xa v chuyn n MYCOM

Kim tra tip xc ca gic cm v chn mt nhn

Kim tra ngun cp cho mt nhn (DC5V)

Kim tra chc nng iu khin ca iu khin t xa

Thay th nu linh kin b hng

Th nghim iu khin t xa bng camera

LGEVN / SVC Dept.iu ha nhit

gia dng (RAC)Hin

tng Ph lcKim tra ch chy cng bcThi gian Dec 2010Thc hin bi


93/103


Nt vn hnh cng bcNt vn hnh cng bc

Vn hnh cng bc

Ch chy test

iu khin t xa

Cng tc trt

Vn hnh cng bc l gi ? :

- Khi iu khin b hng, b mt hay ht pin bnkhng th iu khin c my iu ha. Hy dngnt ny chy my.

Cc lu khi chy cng bc

- Nhit : t ng t 22

- Qut : Tc cao (khng iu khin c)Cng tc trt gm 3 nc vn hnh (RAC loi c)


gia dng (RAC)Hin

tng Ph lcKim tra nhit gi vo / ra

Li lc gi Dn lnh



94/103


t cc sensor ti ng gi vo / ra. S dng tnhnng ca nhit k o chnh lch nhit camy.

Vi cc my iu ha nhit bnh thng, chnh nhit t 11 tr ln

Gi vo

Gi ra

Mng nc Qut

T1

T2

Phng php o

o nhit ht vo v thi ra ca dan lnh:-nh gi chnh xc tnh trng my- Cung cp cc thng tin ng tin cy, nhn thy

c khch hng

tin tng, hi lng

Cng dng

o chnh lch nhit vo / ra. Kim tra li mykhi chnh lch nh hn 10. (trc trc)

Triu chng

30

19

Nhit k in t

19

[R nc do lp t]


gia dng (RAC)Hin

tng Ph lcTrnh t r nc do li lp tThi gian Dec 2010Thc hin bi


95/103


Cnbng

?

YBnhThng

?

Kim tra phnni thm cang nc thi

Kim tra cn bng

ca cctrong

Y

N

Kim trang dn lnh

N

C

iu chnh

Y

N

iu chnh dcng nc thiNi li / Thay th

Kim tra, vsinh li lc

gi, dnlnh

- ng nc hng ln trn -> ng nc- Cong / Rch

- Tnh trng kt ni- Loi ng, ng knh, di

Kim tra p sut ga(4.5~5.5Kg/)

YThiuga?

N

Np ga bsung

RNc

Y

N

Kim tra, sacha tnh trngcch nhit cang

Ktthc

Kim tra tnhtrng chyngc canc votrong

Hoc

Vn r

nc

Y

N

Kim tra, v sinhng v mngnc thi

- Ni ng nc thi vibm nc hoc mynn kh thi sch .Kt

thc

Y


gia dng (RAC)Hin

tng Ph lcKim tra my mt lnh hon ton

[My khng lnh]

Kim tra ch

- Lp ng h np ga (Nu p sut gim -> my nn hot ng bnh thng ) -o dng in



96/103


BnhThng

?Y

Hotng

?

Dng mtkim tra

qut gicc ngoic chykhng

hot ng

Y

N

Kim tra

my nn chot ngkhng?

Lnh?

Y

N

N

Hotng

?o p sut ga(4.5~ 5.5 Kg/)

La chn ch v ci tnhit

N

Y

o in cpcho cc ngoi(220V)

Kim tra vm cc vancc ngoi

Kim tra, sacha r ga, gpng, cp

Np ga

Kim tra , thay th tin / OLP

YMynnchy

?

N

KKt

thc

Kim tranhit cit(18)

YBnh

Thng?

N

o in pcp t cctrong(220V)

YBnh

Thng?

N

Kim tra, thay th PCB

Kim tra,sa chady in

o in tr cundyR-S : ~ 4.5S-C : ~ 3.0R-C : ~ 1.5

YBnhthng?

N

Ktthc

Thay my nn

- Kim tra r ga ticc im ni , ccim hn ca cctrong v cc ngoi

Ktthc

Y

Kim tra,sa chaQuat, t din

LGEVN / SVC Deptiu ha nhit

gia dng (RAC)Hin

tng Ph lcKim tra my khng mt hon ton

[My km lnh]

Kim tra lilc gi

Kim tranhit ci Kim tra tc qut Kiim tra qut

Y

Thi gian Dec 2010

Thc hin bi


97/103


Y

Y

N

Y

N

ng? Bn ?

nhit cit gi cc trong

(Dng remote iukhin tc v kim

tra xem tc m tc thay i khng

Tc Bnh

Thng?

Ci t linhit v tc qut gi

V sinhli lc giv dn lnh

Kiim tra qutgi cc ngoic hot ngkhng

(dng mt)

Kim tra, thay th- M t- T in- PCB cc trong

Kim tra tc qut giHigh

Kim tra dnlnh bn

Hotng

BT?

N

Y

- Kim tra trao i nhitcc ngoi- Kim tra nhit mitrng v khc phc- Thay i v tr cc ngoi

Kim tra, v sinhdn nng

Kim tra,thay th tin, mt

LnhTt?

Y

N

Ktthc

Kim tra psut ga(4.5~ 5.5Kg/)

X b bt ga

Kim tra sacha r ga,gp ng

Bnhthng?

Y

N

- Kim tra cc

im ni, imhn, im unca cc trong ,cc ngoi

Np ga

Kim tra kch c

phng(kch thc phng vcng sut my khngtng ng)

Tha ga

Thiu ga


gia dng (RAC)Hin

tng Ph lc

X l ting n c hc

Khi ng h thng vkim tra cc vn sau: - Loi ting n

Cc trong kuKik Kik Kik..Tak Tak Tak

- Kim tra ma st gia trc mt chao v cnh vane- Dng mt theo di cnh vaneln , xung v kim tra cc tingn bt thng, xc nh nguyen

Thay th m t chao

Thi gian Dec 2010

Thc hin bi


98/103


- Ni pht ra ting n.

Cc trong kuShik Shik Shik

Dul Dul DulKim tra, v sinh li lc gi

Cc trong kuShak Shak Shak

Kim tra, sa cha ch un ngng

nhn v x l

Cc trong kuDul Dul Dul

Kim tra qut cc trong Khp ni/ V nan / Cc vt th l lm kt,chm, bi bn

iu chnh (khp ni) / Vsinh qut (Bn) / Thay th(V, gy)

Cc trong kuWoong~

Kim tra m t cc trong (nghe cm nhn)

Thay th m t

Cc ngoi kuWoong Woong

WoongKim tra rung ng ca my nn

-iu chnh gi treo cc ngoi-iu chnh cn bng ccngoi-iu chnh hoc lp b sungcc chn cao su gim chn

Cc ngoi ku

Ta Da Dak Kim tra qut gi cc ngoi Sa cha, thay th qut gi

Cc ngoi kuChi~ing

Kim tra rung ng ti cc gcvung cc ngoi

iu chnh gc, vn cht vt,dn thm cao su gim chn

- Ch : My nnchy trong tnh trngthiu hoc tha gau c th n hnbnh thng. Hych kim tra ga

LGEVN / SVC Dept.iu ha nhit gia dng (RAC) Hintng Ph lcKim tra my mt ngun

[Khng ngun]

Kim tramch in

ChyMch

Kim tra chpmch cun

ChpMch?

Kim tra uni r in

N N

(Khi cu ch

Thi gian Dec 2010

Thc hin bi


99/103


Khi cu chchy en

PCB

in? dy m tMch? ni, r in

Y

Kim trachpmchmy nn

ChpMch?

Thay th mynn v PCB (bo)

Y

N

Thay th mt cc trong

Y

Bnhthng?

o in pu vo caat-to-mat (CB)

Y

N

Kim tra, sa chaphn cp ngun(Yu cu bn cungcp in)

Kim tra cu chchnh ca PCB cctrong

Cu chNgt?

N

Kim tra,sa chaiu khin

t xa

(Khi cu chchy en)

Y

Chp dyR in?

Kim travaristor ngnmch

Ngnmch?

N

Thaythvaristor

Thay cuch

Y

Y

Sacha

N

[Hng iu khin t xa]

LGEVN / SVC Dept.iu ha nhit gia dng (RAC) Hintng Ph lcKim tra iu khin t xa

Thi gian Dec 2010

Thc hin bi


100/103


C mthanh?

Bt ngunNghe m thanhPick hoc Chit

N

N

Hng trc tip iukhin vo camera cain thoi di ng, nhnphm nu mn hnhin thoi sng ln thiu khin cn tt

Kim tra iu khin

iuKhinTt?

Sa cha, thayth iu khin

Mychy?

N

Kim tra, thay thpin ca iu khin

Vn hnh mybng nt chycng bcForceOperation

Ktthc

Y

YY

N

Thay th PCBcc trong

Kim tra dy in tDisplay PCB ti PCBcc trongKim tra thay th mtnhn (Display PCB)

Ktthc

Tham khoPhn mt

Ngun

LGEVN / SVC Dept.iu ha nhit Gai dng (RAC) Hintng Ph lcX l mi trong phng

Mi sn phm mi

Y Gii th h h i

Mi t mi

Thi gian Dec 2010

Thc hin bi


101/103


Mi do cc cht thm

(nc xt phng)

Mi do cc cht bn t lungy trong dn lnh

Mi xng ngc vo phngt ng nc thi

Mi t ni tht, keo dnsau khi xy dng

Thng gi

Sa cha, chuyn v trng nc thi

Thay th dn lnh

Y

N

Gii thch nguyn nhn vikhch hng

- V sinh dn lnh- H thp nhit ci txung 2~3 C

Y

N

- V sinh dn lnh- H thp nhit ci txung 2~3 C

Ktthc

Mi tdn lnh

Mi t miTrngs dng

LGEVN / SVC Dept.iu ha nhit Gia dng (RAC) Hintng

Ph lc

Tng quan cng sut my v phng

[Nng sut ca my v kch t

rac standard repair process (2010)

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