Haier L42B1180 Service Manual Download

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T_SDA

IF_AGC

AIF

IF-

IF+

T_SCL

T_RF_AGC

RF_AGC

T_RF_AGC

VIFP_OUT

IFAGC

RF_AGC

VIFN_OUT

SIFP_OUT-

T_SDA

3.3VCC_T

T_SCL

3.3VCC_TM

IFAGC

T_RF_AGC

SSDA

SSCL

IFAGC

AIF

IFS1

IFS2

IF+

IF-

VIFN_OUT

VIFP_OUT

SIFP_OUT-

IFS1

IFS2

RF_AGC_SEL

VIFN_OUT

VIFP_OUT

IF-5V

5V-Tuner

IF-5V

+5V

+3.3V_SB

3.3VCC_T

Vdd_A1.6V_D

+5V

3.3VCC_T

Vdd_A1.6V_D

3.3VCC_T

1.8VCC

3.3VCC_T

Vdd_A1.6V_D

1.8VCC

Vdd_A1.6V

Vdd_A1.6V_D

+8V

5V-Tuner

+12V

+5V_LDO

5V-Tuner

AGND

+8V

+5V

1.8VCC

+1.8V

IF+

IF-

TUNER_I2C_SCL

TUNER_I2C_SDA

DEMOD_IF_AGC

VIF_P

VIF_M

SIF_IN-

RF_AGC_SEL

D_RF_AGC

RF AGC Switch

Closed to MstIC

RF Input

Port

Vdd_RF_VCO_LO_3V

Put on digital GND plane

301RF V7 MM 301RF V8 302RF V8

Pin 1 R23 0 DNP DNP

Pin 1 R24 DNP 0 0

75 ohm Line

LNA GND

Important:

Analog GND and digital GND is still separate,

but through Paddle GND connecting them,

please talk to SYU if anything not understood

Vdd_IO

Close Silicon Tuner

DESIGN:George Guo

MODEL: MSAV3207-K3

TITLE: TUNER

CHECKED:

Date: Feb. 3,2010

APPRD:

SHEET: 8 OF 9

VER:1.0

5.19V 116mA (ATV)

Vpp

80mv

Vpp

80mv

For silicon tuner

If use single saw filter(internal),

Delete R276,R280

Add R283(0R)

Delete Q59

Delete C73

If use single saw filter(internal),

Delete these parts of this area

CS30

10nF

CS30

10nF

CS24

18PF

CS24

18PF

U12

AMS1084CD-ADJ

U12

AMS1084CD-ADJ

VIN

VOUT

ADJ

TAB

R139

NC/680R

R139

NC/680R

CS39

100uF/16V

CS39

100uF/16V

RS26

CS1

0.1uF

CS1

0.1uF

RS21

LS12

120ohm_FB

LS12

120ohm_FB

R276

RS4

391R

RS4

391R

CS22

0.1uF

CS22

0.1uF

CS27

RS8

R288

EC6

470uF/16V

EC6

470uF/16V

CS18

82pF

CS18

82pF

R141

NC/4.7K

R141

NC/4.7K

LS6

120ohm_FB

LS6

120ohm_FB

LS4

33nH

LS4

33nH

CS32

0.1uF

CS32

0.1uF

RS17

100R

RS17

100R

SAW

U23

M3953M

SAW

U23

M3953M

ING

OUT1

GND

OUT2

CS17

0.1uF

CS17

0.1uF

C222

0.1uF

C222

0.1uF

CS34

10nF

CS34

10nF

CS6

10nF

CS6

10nF

LS15

120ohm_FB

LS15

120ohm_FB

CS3

0.1uF

CS3

0.1uF

C559

0.1uF

C559

0.1uF

CS4

1nF

CS4

1nF

C73

10nF

C73

10nF

DS1

BAV99

DS1

BAV99

R279

10K

R279

10K

R532

47R

R532

47R

GND

VCC

U28

FSA3157P6X

GND

VCC

U28

FSA3157P6X

RS16

100R

RS16

100R

CS35

10nF

CS35

10nF

C143

0.1uF

C143

0.1uF

FB5

FB56R/1A

FB5

FB56R/1A

CS9

0.1uF

CS9

0.1uF

24.000MHZ

NC/1uH

R437

10K

R437

10K

J1J1

RS20

100R

RS20

100R

CS14

27pF

CS14

27pF

RS10

C139

22nF

C139

22nF

EC16

470uF/16V

EC16

470uF/16V

RS15

4.7K

RS15

4.7K

R156

820R

R156

820R

LS11

220nH

LS11

220nH

LS16

220nH

LS16

220nH

C71

NC/10uF

C71

NC/10uF

RS25

GND

VCC

U29

FSA3157P6X

GND

VCC

U29

FSA3157P6X

R438

10K

R438

10K

RS3

10K

RS3

10K

CS20

2.2uF

CS20

2.2uF

ADJ

OUT

US2

AMS1117-ADJ

ADJ

OUT

US2

AMS1117-ADJ

R153

150R

R153

150R

CS28

100uF/16V

CS28

100uF/16V

LS10

120ohm_FB

LS10

120ohm_FB

CS31

39pF

CS31

39pF

CS8

4700pF

CS8

4700pF

R216

100R

R216

100R

NC/2.2uH

CS10

56pF

CS10

56pF

F Conn

JS1

F Conn

JS1

C20

0.1uF

C20

0.1uF

RS14

4.7K

RS14

4.7K

Q58

3904

Q58

3904

J21J21

C84

0.1uF

C84

0.1uF

CS29

0.1uF

CS29

0.1uF

R217

100R

R217

100R

C72

NC/15nF

C72

NC/15nF

U24

DA58GT-13-E

U24

DA58GT-13-E

+5V

RF-AGC

SCL

SDA

IF-AGC

DIF2

DIF1

AIF

GND

J13J13

R278

10K

R278

10K

RS13

LS7

330nH

LS7

330nH

RS1

NC/1K

RS1

NC/1K

CS36

0.1uF

CS36

0.1uF

C221

0.1uF

C221

0.1uF

U13

AMS1084CD-ADJ

U13

AMS1084CD-ADJ

VIN

VOUT

ADJ

TAB

CS23

18PF

CS23

18PF

C262

4700pF

C262

4700pF

CS26

2.2uF

CS26

2.2uF

RS7

LS8

12nH

LS8

12nH

R280

10K

R280

10K

LS5

120nH

LS5

120nH

R533

47R

R533

47R

RS24

C150

20pF

C150

20pF

C82

10uF

C82

10uF

R150

NC/22R

R150

NC/22R

R137

NC/56R

R137

NC/56R

RS23

CS5

0.1uF

CS5

0.1uF

CS33

10nF

CS33

10nF

C142

22nF

C142

22nF

R157

680R

R157

680R

CS2

2.2uF

CS2

2.2uF

C149

20pF

C149

20pF

LS3

3.6nH

LS3

3.6nH

C263

4700pF

C263

4700pF

ADJ

OUT

US1

AMS1117-3.3

ADJ

OUT

US1

AMS1117-3.3

Q59

3906

Q59

3906

R151

R138

NC/100R

R138

NC/100R

MXL302RF_V8_F1_32

LNA_IN

IDAC

VDD_DNX2

VBATT_A3

VAGC2

VBATT_A5

XTAL_N

XTAL_

CLK_

OUT

GND_

XTAL

VREG_

OUT1

VDD_DNX1

TF_2

TF_3

VREG_

OUT2

VBATT_A2

VAGC1

IF_OUTP2

VBATT_A1

SCL

SDA

IF_O

UTP

VDD_IO

GND_DIG

VREG_D_OUT

VREG_D_IN

VBATT_A4

VDD_REF_SX

IF_OUTN2

IF_OUTN

PADDLE

TF_1

C214

10nF

C214

10nF

LS9

120ohm_FB

LS9

120ohm_FB

LS2

120ohm_FB

LS2

120ohm_FB

RS27

470R

RS27

470R

LS1

120ohm_FB

LS1

120ohm_FB

R283

NC/0R

R283

NC/0R

RS22

CS7

4700pF

CS7

4700pF

CS13

39pF

CS13

39pF

R282

NC/1K

R282

NC/1K

LS14

120ohm_FB

LS14

120ohm_FB

C25

0.1uF

C25

0.1uF

C83

0.1uF

C83

0.1uF

R140

NC/1.5K

R140

NC/1.5K

CS12

1nF

CS12

1nF

SAW

U22

M9370M

SAW

U22

M9370M

ING

OUT1

GND

OUT2

R290

R440

100K

R440

100K

LS13

120ohm_FB

LS13

120ohm_FB

RS19

CS25

100uF/16V

CS25

100uF/16V

R154

220R

R154

220R

NC/2.2uH

C74

10uF

C74

10uF

Q12

NC/2SC2216

Q12

NC/2SC2216

RS9

47R

RS9

47R

C220

10nF

C220

10nF

CS19

0.1uF

CS19

0.1uF

R281

10R

R281

10R

CS16

180pF

CS16

180pF

R534

100R

R534

100R

RS5

RS12

RS2

391R

RS2

391R

RS18

120R

RS18

120R

RS6

R271

NC/39R

R271

NC/39R

Summary of Contents for L42B1180

Page 1: ...uals of potential dangers in attempting to service a product Products powered by electricity should be serviced or repaired only by experienced professional technicians Any attempt to service or repair the product or products dealt with in this service information by anyone else could result in serious injury or death Haier Group 2009 Qingdao Haier Electronics Co Ltd All rights reserved Unauthoriz...

Page 2: ...ve the Pedestal 7 8 8 8 8 11 12 14 14 4 2 Remove the Back Cover 14 4 3 Remove the Terminal Bracket 15 4 4 Remove the Power Module 15 4 5 Remove the Main Board 15 4 6 Remove the Speaker 16 4 7 Remove the Remote Control Board 16 5 Installation Instructions 16 5 1 External Equipment Connections 16 5 2 HDMI Connections 20 6 Operation Instructions 23 6 1 Front Panel Controls 6 2 Back Panel Controls 6 3...

Page 3: ... 02 9 Trouble shooting 43 9 1 Simple Check 43 9 2 Main Board Failure Check 9 3 Panel Failure 44 53 ...

Page 4: ...maintenance instructions in the literture accompanying the appliance 1 3 2 Be careful to the electrical shock 7R SUHYHQW GDPDJH ZKLFK PLJKW UHVXOW LQ HOHFWULF VKRFN RU UH GR QRW H SRVH WKLV 79 VHW to rain or excessive moisture This TV must not be exposed to dripping or splashing water DQG REMHFWV OOHG ZLWK OLTXLG VXFK DV YDVHV PXVW QRW EH SODFHG RQ WRS RI RU DERYH WKH 79 1 3 3 Electro static disch...

Page 5: ...O WKH WHVW WXUHV VSHFL HG LQ WKLV VHUYLFH PDQXDO CAUTION R QRW FRQQHFW WKH WHVW WXUH JURXQG VWUDS WR DQ KHDW VLQN LQ WKLV UHFeiver 3 Do not spray chemicals on or near this receiver or any of its assemblies 4 Unless specified otherwise in this service manual clean electrical contacts only by applying the following mixture to the contacts with a pipe cleaner cotton tipped stick or comparable non abr...

Page 6: ...ctricity Such components commonly are called Electrostatically Sensitive ES Devices Examples of typical ES devices are integrated circuits and some field effect transistors and semiconductor chip components The following techniques should be used to help reduce the ncidence of component damage caused by static by static electricity 4 Use only an anti static type solder removal device Some solder r...

Page 7: ...table below Note A note provides information that is not indispensable but may nevertheless be valuable to the reader such as tips and tricks Caution A caution is used when there is danger that the reader through incorrect manipulation may damage equipment loose data get an unexpected result or has to restart part of a procedure Warning A warning is used when there is danger of personal injury Ref...

Page 8: ... Color Display 16 7M No of Preset Channels Cable 1 135 Air 2 69 ATV DTV OSD Language English Color System NTSC PAL SECAM Audio System M Audio Output Power Built in W 8W 2 Audio Output Power outer W No Total Power Input W 240W Voltage Range V AC100V 240V Power Frequency Hz 50 60Hz Net Weight KG Gross Weight KG Net Dimension MM 1015 230 712 Packaged Dimension MM 1215 190 750 22 5 25 7 ...

Page 9: ... 08 3 Location of Controls and Components 3 1 Board Location 3 2 Main Board No Description A Board Main Board B Board Power Board A Board B Board ...

Page 10: ...3 5V 4 high voltage 4 5V 5 GND 5 POWER ON OFF 6 5VSTB 7 5V 8 5V 9 GND 10 GND 11 GND 12 12V 13 12V Notes J16 Pin 2 Backlight on off The system can turn on or turn off the backlight of TFT LCD Panel through the power supply unit path CN115 Pin 5 System power on standby System board will use this pin to control system power J16 Pin 3 Control the luminance of backlight The system can generate the PWM ...

Page 11: ...r Signal name Description 1 LED_R LAMP RED 2 LED_G LAMP GREEN 3 4 IR REMOTE CONTROL 5 GND GND 6 5V POWER FOR REMOTE Pin number Signal name Description 1 KEY1 2 KEY0 3 GND remote connector J6 Keypad and connector J7 ...

Page 12: ...RQQHFWRUGH QLWLRQ 11 Speaker connector J11 Pin number Signal nameD escription K P S R K P S R 1 K P S R K P S R 2 K P S L K P S L 3 K P S L K P S L 4 CN3 CN2 Pin number Signal name Pin number Signal name 9 GND GND GND GND GND 10 GND 11 GND 12 12V 13 12V POWER ON OFF 5VSTB 5V 5V ...

Page 13: ...3 4 LCD Panel 12 T420H W06 V2 AU ...

Page 14: ...R function Enable 3 3V max 4V Disable 0V or Open 35 CH2_CLK LVDS Channel 2 Clock 11 GND Ground 36 CH2_CLK LVDS Channel 2 Clock 12 CH1_0 LVDS Channel 1 Signal 0 37 GND Ground 13 CH1_0 LVDS Channel 1 Signal 0 38 CH2_3 LVDS Channel 2 Signal 3 14 CH1_1 LVDS Channel 1 Signal 1 39 CH2_3 LVDS Channel 2 Signal 3 15 CH1_1 LVDS Channel 1 Signal 1 40 Reserved AUO Internal Use Only 16 CH1_2 LVDS Channel 1 Sig...

Page 15: ...as follows Remove the adhesive tape indicated on the JXUH DERYH D GRZQ WKH XQLW VR WKDW UHDU FRYHU faces upward 5HPRYH WKH IRXU VFUHZ IURP WKH UHDU FRYHU LQGLFDWHG ZLWK ż 7KHQ UHPRYH WKH SHGHVWDO 4 2Remove the Back Cover 5HPRYH WKH WKHVH VFUHZ LQGLFDWHG RQ JXUH DERYH E ż 7KHQ UHPRYH WKH EDFN FRYHU IURP WKH unit 14 ...

Page 16: ...KH WHUPLQDO EUDFNHW WR WKH VLGH 4 4 Remove the power module 5HPRYH WKH IRXU VFUHZ LQGLFDWHG RQ WKH JXUH DERYH E ż 7KHQ UHPRYH WKH SRZHU PRGXOH 4 5 Remove the Main board 5HPRYH WKH WZR VFUHZ LQGLFDWHG RQ WKH JXUH DERYH E ż LVFRQQHFWHG WKH FRXSOHU J6 J7 J9 J15 J16 J11 5HPRYH WKH 0DLQ ERDUG 15 CN513 ...

Page 17: ...te control board 16 5 Installation Instructions 5 1 External Equipment Connections Accessories Remote Control User GUIDE Battery 1 ENTER RETURN DISPLAY 2 3 4 5 6 7 8 9 0 CH _ _ VOL SUBTITLE AUDIO SLEEP V CHIP CC AUTO S M EXIT P M TV DISPLAY SOURCE MENU MTS SAP MUTE POWER ASPECT DVD USB RECALL GOTO MENU SETUP ...

Page 18: ... 17 ...

Page 19: ... 18 ...

Page 20: ... 19 ...

Page 21: ... Main source menu When the source device DVD player or Set Top Box supports DVI How To Connect 1 Connect the source device to HDMI port of this TV with a HDMI to DVI cable not supplied with this product 2 A separated audio connection is necessary 3 If the source device has an analog audio output connector connect the source device audio output to DVI Audio In port located on the PC port How To Use...

Page 22: ...VI Cable not supplied with the product Analog Audio Cable Stereo to RCA type not supplied with the product Connecting Headphones You can connect a set of headphones to your set if you wish to watch a TV programmer without disturbing the other people in the room 21 ...

Page 23: ...L HG YROWDJH Use the attached power cord only Ŷ I WKH SRODUL HG FRUG GRHV QRW W LQWR D QRQ SRODUL HG RXWOHW GR QRW DWWHPSW WR OH RU FXW WKH EODGH W LV WKH XVHUCV UHVSRQVLELOLW WR KDYH DQ electrician replace the obsolete outlet Ŷ I RX FDXVH D VWDWLF GLVFKDUJH ZKHQ WRXFKLQJ WKH XQLW DQG WKH XQLW IDLOV WR IXQFWLRQ simply unplug the unit from the AC outlet and plug it back in The unit should return to...

Page 24: ...6 Operation Instructions Basal information 6 1 Front panel controls 6 2 Back panel controls 23 ...

Page 25: ...6 3 Setting Up Your Remote Control 24 ...

Page 26: ...7 Electrical parts 7 1 Block diagram 25 AMP Headphone Coaxial 1 2 MSD318QT Main IC ...

Page 27: ...C504 0 1uF R123 75R R123 75R R126 12K R126 12K R125 75R R125 75R R902 100R R902 100R C48 560pF C48 560pF R918 100R R918 100R R905 100R R905 100R R115 22K R115 22K R98 33R R98 33R R167 1K R167 1K R114 22K R114 22K R163 1K R163 1K R919 10K R919 10K C31 47nF C31 47nF Q9 3904 Q9 3904 1 2 3 C32 47nF C32 47nF C503 0 1uF C503 0 1uF C66 560pF C66 560pF U25 NC CP_2 0B U25 NC CP_2 0B NC1 1 MODE1 2 NC2 3 NRE...

Page 28: ...1 220nH LS16 220nH LS16 220nH C71 NC 10uF C71 NC 10uF RS25 0R RS25 0R B1 GND B0 A S VCC U29 FSA3157P6X B1 GND B0 A S VCC U29 FSA3157P6X 1 2 3 4 5 6 R438 10K R438 10K RS3 10K RS3 10K CS20 2 2uF CS20 2 2uF ADJ OUT IN US2 AMS1117 ADJ ADJ OUT IN US2 AMS1117 ADJ 3 2 1 4 R153 150R R153 150R CS28 100uF 16V CS28 100uF 16V LS10 120ohm_FB LS10 120ohm_FB CS31 39pF CS31 39pF CS8 4700pF CS8 4700pF R216 100R R2...

Page 29: ...10K C124 470pF C124 470pF R366 0R R366 0R Q35 3904 Q35 3904 1 2 3 EC12 100uF 25V EC12 100uF 25V 1 2 C706 NC 1nF C706 NC 1nF R299 0R R299 0R R239 4 7K R239 4 7K R242 10K R242 10K R236 10K R236 10K R249 0R R249 0R EC11 470uF 16V EC11 470uF 16V 1 2 FB703 NC FB 1206 FB703 NC FB 1206 C705 NC 1uF C705 NC 1uF C730 NC 220nF C730 NC 220nF C743 NC 1uF C743 NC 1uF Q22 3904 Q22 3904 R233 100R R233 100R R300 4...

Page 30: ...156 NC 10nF C156 NC 10nF R204 NC R204 NC R318 100K R318 100K R321 4 7K R321 4 7K E80 V800AA E80 V800AA R205 NC R205 NC J17 CON4 J17 CON4 1 2 3 4 C118 100uF 16V C118 100uF 16V R323 NC R323 NC Q34 3904 Q34 3904 1 2 3 R200 NC R200 NC R326 10K R326 10K R194 NC 51K R194 NC 51K E81 V800AA E81 V800AA R195 NC 100K R195 NC 100K R158 5 1R R158 5 1R R201 NC R201 NC EC99 NC 220uF 16 EC99 NC 220uF 16 1 2 U8 AP...

Page 31: ...DEL MSAV3207 K3 TITLE DDR2_16 CHECKED Date Feb 3 2010 APPRD SHEET 5 OF 9 VER 1 0 Vpp 200mv C433 1UF C433 1UF 7 5 3 1 8 6 4 2 RP18 75RX4 7 5 3 1 8 6 4 2 RP18 75RX4 R13 75R R13 75R 7 5 3 1 8 6 4 2 RP2 22RX4 7 5 3 1 8 6 4 2 RP2 22RX4 C430 0 1uF C430 0 1uF C446 10nF C446 10nF R83 100R R83 100R C431 0 1uF C431 0 1uF U9 DDRII512M P3R12E4JFF G8E U9 DDRII512M P3R12E4JFF G8E A0 M8 A1 M3 A2 M7 A3 N2 A4 N8 A...

Page 32: ...21 PAD_IO 37 A CKE D19 PAD_IO 40 A BA2 E19 PAD_IO 39 A BA0 D20 PAD_IO 42 A AD10 F19 PAD_IO 41 A AD1 E20 PAD_IO 44 A AD3 F21 PAD_IO 46 A AD9 G19 PAD_IO 43 A AD5 F20 PAD_IO 35 A AD12 G20 PAD_IO 45 A AD7 G21 PAD_IO 24 A LDQSM A16 R129 100R R129 100R C140 10nF C140 10nF R180 2K R180 2K R164 4 7K R164 4 7K L49 FB 60R 0 3A LC0603 L49 FB 60R 0 3A LC0603 R304 4 7K R304 4 7K R72 10K R72 10K R56 10K R56 10K...

Page 33: ...35 22K R335 22K E65 NC E65 NC E53 NC E53 NC Q301 NC 2N7002 Q301 NC 2N7002 3 1 2 E39 NC E39 NC R351 10K R351 10K CN3 HDMI CN3 HDMI DATA2 1 DATA2 SHIELD 2 DATA2 3 DATA1 4 DATA1 SHIELD 5 DAT1A 6 DATA0 7 8 DATA0 SHIELD DATA0 9 CLK 10 CLK SHIELD 11 CLK 12 CEC 13 NC 14 SCL 15 SDA 16 DDC CEC GND 17 5V POWER 18 HOT PLUG 19 20 GND1 21 GND2 22 GND3 23 GND4 E62 NC E62 NC R310 100R R310 100R CN1 DIP 20 2 10 C...

Page 34: ...7 47nF E3 NC E3 NC R58 100R R58 100R R147 100R R147 100R E10 NC E10 NC E14 NC E14 NC R29 220R R29 220R E16 NC E16 NC C492 1nF C492 1nF R88 75R R88 75R R31 1K R31 1K C35 47nF C35 47nF R136 12K R136 12K R346 NC R346 NC C485 47nF C485 47nF J37 Single RCA J37 Single RCA G 1 S 2 S 3 E2 NC E2 NC R27 150R R27 150R R544 33R R544 33R R551 68R R551 68R R213 12K R213 12K R143 75R R143 75R CN11 CN11 1 2 3 4 5...

Page 35: ...58 100R R147 100R R147 100R E10 NC E10 NC E16 NC E16 NC C492 1nF C492 1nF R88 75R R88 75R C35 47nF C35 47nF R136 12K R136 12K R346 NC R346 NC C485 47nF C485 47nF E2 NC E2 NC R544 33R R544 33R R551 68R R551 68R R213 12K R213 12K R143 75R R143 75R CN11 CN11 1 2 3 4 5 6 7 8 CN513 NC Side_AV CN513 NC Side_AV 1 1 2 2 3 3 4 4 C491 47nF C491 47nF C496 47nF C496 47nF R347 NC R347 NC C70 560pF C70 560pF R9...

Page 36: ...rol for USB INPUT 2 3 4 5 6 7 Connection Wire For Keyboard Connection Wire For Speaker Connection Wire For SIDE AV INPUT Connection Wire For Remote 8 Connection Wire Power For the Power Module 9 Connection Wire Control for Backlight on off LVDS Wire Connection Wire Power For Mainboard ...

Page 37: ...8 TV OPERATION 36 ...

Page 38: ... 37 ...

Page 39: ... 38 Press ENTER Key To Select ...

Page 40: ... 39 Press ENTER Key To Select ...

Page 41: ... 40 ...

Page 42: ... the key exit to shut the factory setting Content 1 ADC setting set ADC value of YUV VGA It can also be auto set Adopt 100 color bar to yuv and Checkerboard signal to vga 2 Color Temp 3 Video Quality 4 Sound Quality 5 Curve Setting 6 Aging Mode 7 Other Setting 8 SW Upgrade 9 Shipment 7KH UVW OLQH LV 6 9HU 1R ...

Page 43: ...o update You should remove the USB memory and reset TV after update Note When Upgrade on the process please don t Power Off Haier MSD318QT F W upgrade with USB SOP Step 1 Ready for F W Upgrade 1 1 Prepare a USB memory RS WKH VRIWZDUH OH PHUJH IURP RXU FRPSXWHU WR WKH 86 PHPRU DQG UHPRYH LW from computer s USB port Step 2 F W Upgrade 2 1 AC ON 8 2 How to update software ...

Page 44: ... 43 9 Trouble shooting 9 1 Simple check ...

Page 45: ...44 9 2 Main board failure check Service guide 1 Black creen 2 White screen 6 J15 J15 2 11 2 on VCC pins of J9 Check if Q31 is working Check if J9 is Signal on J9 Check Q2 Q3 and the 5 Is power LCD normal ...

Page 46: ... 45 3 Panel display abnormally connector J9 is at normal level ...

Page 47: ... the speakers Y N Check if there is output at J 11 Check if there is 12V input at PIN28of U19 Check if the power supply system is damaged short circuit or mis connected N Y Check if PIN7of U19 is low voltage Check the volume control circuit from U19 Y N Check if there is signal input at PIN3 PIN12 of U19 Check the volume input circuit from to U19 N Y Replace U19 ...

Page 48: ... U24 N Y Y Y N Check the power supply circuit to this PIN Check if there is intermediate frequency signal output at PIN12 of U24 Check if there is I2C signal at PIN6 PIN7 of TUNER1 Check the I2C circuit between U11 and U24 Check the tuner Check the signal circuit between U11 and U24 Fix the RF set N ...

Page 49: ...6 HDMI no picture or picture abnormal If CN10 is R111 R112 R113 R114 R116 R117 R100 R105 R106 R108 Q11 Q12 48 2 R301 R310 R319 R317 R351 R338 R343 Q305 ...

Page 50: ... 49 7 PC no picture or picture abnormal ...

Page 51: ... 50 8 YPBPR AV no picture or picture abnormal Check Y ...

Page 52: ...be caused by surge current and EDS Black Screen B L normal only Black screen display FIIcker Crosstalk LCD Vcom imbalance Abnormal Color Only color abormal Capacitance improper bring crosstalk inside LCD pannel Abnormal Color Only color abnormal 1 Chip lose action 2 I C s h o r t o r jointion bad 3 Pannel and vsc connect bad ...

Page 53: ... Bladder in Polarizer Bladder between Polarizer and top glass Polarizer Scratch Polarizer Scratch Tine or rigidity arose F M i n s i d e Polarizer Eyewinker inside Polarizer Eyewinker inside Polarizer Circuit Abnormal Display Abnormal Display 1 Chip lose action 2 IC ahort or jointiog bad 3 Pannel and vsc connect bad Flashing B r i g h t a n d d a r k display alternately ...

Page 54: ... Dim or L D TCP Sunken TCP lead cracking ACF bonding short Awful environment and something electric enter into LCD Mis align between TCP and Panel Panel failure TCP failure V Dim Vertal gray line V L D Vertical color line light or dark forever H B D Horizontal bar H Dim Horizontal gary line H L D H o r i z o n t a l line light or dark forever ...

Page 55: ...n Connect badness between wire and electrode B L dark B L brightness darker than normal Connect badnessShort between wire and electrode B L wire damaged B L wire damaged Operation abnormal or systemic noise B L wire open Without backlight Operation abnormal or systemic noise B L shut down B L shutdown in sometime Short bitween lamp housing and wire Because consume power too much F M F M inB L whit...

Page 56: ...omena Failure cause Mechanlcal or B L Light leakage Brightness at bottom of LCM brighter than normal B L unit badness Uniformity B L brightness asymmetric Sheet in B L unit is uneven Mount hole Lack screw or screw damage Lack screw Screw damage ...

Page 57: ...Sincere Forever Haier Group Haier Industrial Park No 1 Haier Road 266101 Qingdao China http www haier com Printed in China ...

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