LG 42PJ350R Service Manual Download

Page: 17 / 34

USB DOWN STREAM

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.

INPUT

HPD_MST_2

+5V_HDMI_1

TMDS1_RXC-

R110
100

DDC_SCL2

R109
100

+5V_HDMI_1

R118

100

CEC

IC103

MAX3232CDR

C1-

V+

C2+

C1+

V-

C2-

DOUT2

RIN2

ROUT2

DIN2

DIN1

ROUT1

RIN1

DOUT1

GND

VCC

D101

KDS184S

TMDS1_RX0-

DDC_SDA2

+5V_HDMI_3

Q101

2SC3875S

RT1C3904-T112

R162
10K

SIDE_HDMI

DDC_SCL1

+5V_HDMI_2

+5V_ST

DDC_SCL2

+5V_HDMI_2

TMDS1_RX2-

R160

100

SIDE_HDMI

D102
KDS184S

SIDE_HDMI

R161

100

SIDE_HDMI

CEC

TMDS2_RX1-

+3.3V_MPLL

+5V_ST

DDC_SDA1

DDC_SCL3

DDC_SCL1

+5V_ST

DDC_SDA1

D100

KDS184S

DDC_SDA2

DDC_SDA3

R103

10K

R102

R122
4.7K

R114

100

R115

100

TMDS2_RX2-

RXD

R116
10K

R101
1K

BOT_HDMI

R129

4.7K

TMDS1_RX1-

R104

10K

BOT_HDMI

HPD_MST_1

TMDS2_RX0-

TMDS2_RXC-

R119
10K

R163
10K

SIDE_HDMI

+5V_ST

R117

100

Q100

2SC3875S

BOT_HDMI

RT1C3904-T112

TXD

DSUB_SCL

ROM_SDA

R120
4.7K

C103

68pF

C104

68pF

R111

DSUB_SDA

PC_HS

ROM_SCL

PC_B

PC_VS

R128

R113

PC_G

R112

R127

R132

10K

R121

4.7K

PC_R

ISP_RX

C105

0.1uF

C106

0.1uF

C107

0.1uF

C108

0.1uF

JK111

SPG09-DB-009

R159
12K

SIDE_VIN

SIDE_LIN

R145

SIDE_RIN

R147
220K

R152

10K

R146
220K

R153

10K

R158
12K

JK110

SPG09-DB-010

IR_OUT

C110
0.01uF
25V

SIDE_HDMI

C101
0.01uF
25V

C109
0.01uF
25V

C100

0.01uF

25V

C102
0.01uF
25V

R124
220K

PC_AUD_R

R125

10K

PC_AUD_L

R131

12K

R123
220K

R130
12K

R126

10K

R539

HOTEL

R535

NONE_HOTEL

R529

470K

MUTE_LINE

MNT_LOUT

C114
10uF
16V

NONE_HOTEL

SPK_R-_HOTEL

C111

10uF

16V

SPK_R+_HOTEL

AUDIO_R

MNT_ROUT

R540

HOTEL

MUTE_LINE

R528

470K

R532

HOTEL

R509
220K

SC2_RIN

R521
12K

R511

10K

R522
12K

R512

10K

SC2_LIN

R510
220K

SC2_ID

R502

SC2_VIN

R513
10K

R523

Q502
2SC3875S(ALY)

Q504
2SC3875S(ALY)

R533

NONE_HOTEL

C112
10uF
16V

R514
12K

R505

10K

MUTE_LINE

R508

TV_ROUT

SC1_VIN

SC1_RIN

TV_LOUT

R506

10K

MUTE_LINE

Q505
2SC3875S(ALY)

R520

R503
220K

R531

470K

SC1_LIN

R534

R515
12K

R530
470K

Q503
2SC3875S(ALY)

R537

SC1_ID

R504
220K

C113

10uF

16V

C115

220uF 16V

TV_VOUT

Q501
2SC3875S(ALY)
EU

SC1_FB

R536

Q500

2SC3875S(ALY)

R526

R541

R525

R519

75
EU

R524

R527

SC1_R

R518

SC1_G

R517

SC1_B

R516

R507
20K

R500

NONE_EU

R501

NONE_EU

+3.3V_MST

C116

100uF

16V

MNT_VOUT

R542

JK113

PPJ231-01

NONE_EU

R133

100

R134

100

R135
10K

R136
10K

JK100

YKF45-7058V

BOT_HDMI

JK101

YKF45-7054V

JK106

PPJ235-01

USB_DN

USB_DP

+5V_MULTI

JK112

KJA-UB-4-0004

TMDS3_RX2-

DDC_SDA3

R100

SIDE_HDMI

HPD_MST_3

Q102

2SC3875S
SIDE_HDMI

RT1C3904-T112

TMDS3_RX1-

TMDS3_RXC-

CEC

JK102

KJA-ET-0-0032

SIDE_HDMI

CEC

DATA1_SHIELD

JACK_GND

CLK-

CLK_SHIELD

DATA2_SHIELD

HPD

+5V_POWER

CLK+

DATA1+

DATA2+

DDC/CEC_GND

DATA0-

DATA0_SHIELD

DATA2-

SDA

DATA0+

DATA1-

SCL

TMDS3_RX0-

R105

10K

SIDE_HDMI

DDC_SCL3

+5V_HDMI_3

JK103

PEJ027-01

ROM_SDA

ROM_SCL

DSUB_SDA

DSUB_SCL

R142

100

NONE_RGB

R143

100

NONE_RGB

R144

100

NONE_RGB

R150

100

NONE_RGB

R180
5.1

R181
5.1

COMP1_PR

R148

10K

NONE_EU

JK105

PPJ234-01

R174

10K

R179

12K

COMP2_R

R178
12K

R154
12K

NONE_EU

COMP1_Y

R165

COMP1_PB

R137

NONE_EU

R169
220K

R138

NONE_EU

R166

R175

10K

COMP2_PR

R139

NONE_EU

COMP2_PB

R140
220K

NONE_EU

R167

COMP1_R

R155

12K

NONE_EU

R168
220K

R149

10K

NONE_EU

R141
220K

NONE_EU

COMP2_Y

JK107

PPJ239-01

NONE_EU

[RD2]CONTACT

[RD2]O-SPRING_2

[RD2]E-LUG

[GN1]E-LUG

[GN1]O-SPRING

[GN1]CONTACT

[BL1]E-LUG-S

[BL1]O-SPRING

[RD1]E-LUG-S

[RD1]O-SPRING_1

[RD1]CONTACT_1

[WH1]O-SPRING

[RD1]CONTACT_2

[RD1]O-SPRING_2

[RD1]E-LUG

COMP2_L

COMP1_L

IC101

CAT24C02WI-GT3

VSS

SDA

SCL

VCC

IC102

CAT24C02WI-GT3

VSS

SDA

SCL

VCC

IC100

CAT24C02WI-GT3

VSS

SDA

SCL

VCC

JK116

PPJ241-01

NONE_EU

[WH]L_OUT

[WH]GND

[RD]R_OUT

CEC

D103
30V

MMBD301LT1G

D104
10V

BSS83

Q103

R106

56K

CEC_C

+3.3V_MPLL

EYE_SDA

EYE_SCL

R543

100

R544

100

JK114

PSC008-02

SHIELD

AV_DET

JK115

PSC008-02

SHIELD

AV_DET

R538

5.6K

1 4

INPUT

[ Slim Jack : 6630TGA004Q ]

[ Slim Jack : 6630G00001E ]

[ Slim Jack : EAG59023302 ]

[ Slim Jack : EAG59023301_SCREW ]

[ Slim Jack : EAG42463001]

[ EAG41945401 ]

EAX61365502(BPR)
H6 Revolution Circuit Diagram

[ SIDE HDMI ]

H6 R

2009/11/05

HDMI CEC

Only for training and service purposes

LGE Internal Use Only

Summary of Contents for 42PJ350R

Page 1: ... READ THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS PP01A MODEL 42PJ350R 42PJ350R MA North Latin America http aic lgservice com Europe Africa http eic lgservice com Asia Oceania http biz lgservice com Internal Use Only Printed in Korea P NO MFL62881410 1005 REV02 ...

Page 2: ...nly Copyright 2010 LG Electronics Inc All rights reserved Only for training and service purposes CONTENTS CONTENTS 2 SAFETY PRECAUTIONS 3 SPECIFICATION 4 ADJUSTMENT INSTRUCTION 7 BLOCK DIAGRAM 15 EXPLODED VIEW 16 SVC SHEET ...

Page 3: ...t s Neck Leakage Current Cold Check Antenna Cold Check With the instrument AC plug removed from AC source connect an electrical jumper across the two AC plug prongs Place the AC switch in the on position connect one lead of ohm meter to the AC plug prongs tied together and touch other ohm meter lead in turn to each exposed metallic parts such as antenna terminals phone jacks etc If the exposed met...

Page 4: ...cification by part number in accordance with SBOM 5 The receiver must be operated for about 20 minutes prior to the adjustment V Test Method 1 Performance LGE TV test method followed 2 Demanded other specification Safety CE IEC specification EMC CE IEC V Module Specification 1 42 XGA 42PJ350R MA Central and South America LG Model Name Market Place Brand Model Name 42PJ350R MA Remark Safety IEC EN6...

Page 5: ... 3 Available Channel BAND NTSC VHF 2 13 UHF 14 69 CATV 1 125 4 Receiving system Upper Heterodyne 5 Video Input 2EA PAL SECAM NTSC Rear 1EA Side 1EA 6 Component Input 2EA Y Cb Cr Y Pb Pr 7 RGB Input 1EA RGB PC 8 HDMI Input 2ea HDMI DTV Only PCM MODE Side HDMI 1 Rear HDMI 1 42 50PJ250 MA only 3ea Side HDMI 1 Rear HDMI 2 9 Audio Input 5EA L R Input PC 1EA Component 2EA Rear 1EA Side 1EA 10 RS 232C 1E...

Page 6: ...ode Vivid 3 Brightness uniformity 10 0 10 85IRE Full White Pattern Picture Mode Vivid White X 0 270 0 285 0 300 White 216 level pattern Y 0 278 0 293 0 308 Red Green Blue 255 level pattern Red X 0 635 0 640 4 Color Y 0 318 0 330 0 340 coordinate Green X 0 242 0 300 0 305 Y 0 595 0 600 Blue X 0 150 0 158 Y 0 060 0 070 5 Contrast ratio at dark room 100 000 1 1 000 000 1 White 1 100 White Window Patt...

Page 7: ...justment when module is in the circumstance of over 15 C In case of keeping module is in the circumstance of 0 C it should be placed in the circumstance of above 15 C for 2 hours In case of keeping module is in the circumstance of below 20 C it should be placed in the circumstance of above 15 C for 3 hours 3 S W Program Download 3 1 Profile This is for downloading the s w to the flash memory of th...

Page 8: ...ould be only one SW binary file in USB Stick 1 Using Power ON button of the control R C Power on TV 2 Insert the USB memory stick to the SET 3 Display USB loding message then push the Exit Key of control R C 4 Push the MENU Key and move the cusor OPTION of OSD Fig 1 Caution Don t push the OK key Just cusor is on the OPTION menu 5 Push the 7 key of control R C continuously Then Display TV Software ...

Page 9: ...ter software D L or PCBA manufacturing you can download EDID Data When you adjust Tool Option H6 Model EDID download process is executed automatically If the model don t have HDMI 3 HDMI 3 will be disappeared at OSD Window Caution When you adjust tool option don t connect HDMI or D sub cable If you connect some cable EDID D L process will be failed 7 Adjustment method Before PCBA check have to cha...

Page 10: ... Use the cable HDMI or D sub cable for EDID Writing Automatically PP01A B C Model EDID download process is executed when you adjust Tool Option Jack Layout Tool Option Item CSA AREA NON EU AREA Inch Tool SIDE AV 0 1 HDMI 0 1 2 3 Side HDMI 0 1 COMP2 0 1 RGB 0 1 RS232C 0 1 Local Key 0 7KEY 1 8KEY LED TYPE 0 RED 1 RED White 2 Reserve USB TYPE 0 NONE 1 PHOTO MUSIC 2 PHOTO MUSIC DivX ...

Page 11: ... Only for training and service purposes EAST EU CIS AREA 5 1 EDID Data O XGA EDID DATA 42 inch Analog RGB 128bytes HDMI 1 256bytes HDMI 2 256bytes HDMI 3 256bytes SIDE HDMI HDMI 3 NO Item Condition Hex Data 1 Manufacturer ID GSM 1E6D 2 Version Digital 1 01 3 Revision Digital 3 03 ...

Page 12: ...V 5 Both component and RGB ADC adjustment are executed automatically When ADC adjustment is finished this OSD appear Notice After All mode check set the Speaker Volume 0 Caution Don t Press the Power Key on Remote Controller Just AC Power Off Not DC off Notice From this sentence All working is mass production 8 POWER PCB Assy Voltage Adjustment Vs voltage Adjustment 8 1 Test Equipment D M M 1EA 8 ...

Page 13: ...Balance 9 1 Required Equipment 1 Remote controller for adjustment 2 Color Analyzer CS 1000 CA 100 100 CA 210 or same produc CH 10 PDP lease adjust CA 210 CA 100 by CS 1000 before measuring 3 Auto W B adjustment instrument only for Auto adjustment 9 2 AUTO White Balance Process Before Adjust of White Balance Please press POWER ONLY key Adjust Process will start by execute RS232C Command O CS 1000 C...

Page 14: ...on is less than 10ux 2 Measure and adjust after sticking the Color Analyzer CA 100 CA210 to the side of the module 3 Aging time After aging start keep the Power on no suspension of power supply and heat run over 5 minutes Above optical characteristics are should be measured by following condition O DDC Adjustment Command Set Measured Mode Picture Mode Vivid Fresh Contrast Off Fresh Color Off Smart...

Page 16: ...ectrical and mechanical parts in this chassis have special safety related characteristics These parts are identified by in the Schematic Diagram and EXPLODED VIEW It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent X RADIATION Shock Fire or other Hazards Do not modify the original design without permission of manufact...

Page 17: ...22 EU Q500 2SC3875S ALY EU E B C R526 3K EU R541 3K EU R525 3K EU R519 75 EU R524 1K EU R527 75 EU SC1_R R518 75 EU SC1_G R517 75 EU SC1_B R516 75 EU R507 20K EU R500 0 NONE_EU R501 0 NONE_EU 3 3V_MST C116 100uF 16V EU MNT_VOUT R542 75 EU JK113 PPJ231 01 NONE_EU 8 6 7 5 4 R133 100 R134 100 R135 10K R136 10K JK100 YKF45 7058V BOT_HDMI 14 13 5 20 12 11 2 19 18 10 4 1 17 9 8 3 16 7 6 15 JK101 YKF45 7...

Page 18: ...XCE4 C205 0 01uF 25V M5V_ON L201 MLB 201209 0120P N2 120 ohm 5V_MULTI 5V_ST 17V_TI R226 4 7K ERROR_DET 5V_MULTI R236 100 C208 100uF 16V C212 0 01uF 25V R231 100 R203 100 RL_ON POWER_ON AC_DET C228 0 1uF HOTEL DISP_EN R218 100 R219 470 DISP_EN C226 47uF 16V C214 100uF 16V BU2 SMT 5030D READY 1 LEAD 2 LEAD 3 DUMMY 5V_MULTI R241 100 READY D201 1N4148W READY Q203 2SC3875S ALY READY E B C BUZZ_PWM R242...

Page 19: ...4700pF C320 0 047uF C321 2200pF C322 0 1uF C380 0 1uF C381 0 1uF C382 0 1uF C383 0 1uF C384 0 1uF C385 0 1uF C386 0 1uF C387 0 1uF C388 0 1uF C389 0 1uF C395 0 1uF 16V R304 22 R306 22 R305 22 R307 22 C309 0 1uF 5V_TU C364 0 68uF C363 0 68uF L300 BLM18BD102SN1D EU 10K R317 EU IF_AGC_SEL R316 100 EU C312 4 7uF 35V EU C305 27pF S_SDA R311 330 R312 330 S_SCL C308 27pF R343 0 EU C314 0 1uF 50V L301 120...

Page 20: ... 111 SCZ 112 PWM0 113 PWM1 114 PWM2 115 PWM3 116 LVA4P 117 LVA4M 118 LVA3P 119 LVA3M 120 LVACKP 121 LVACKM 122 LVA2P 123 LVA2M 124 LVA1P 125 LVA1M 126 LVA0P 127 LVA0M 128 VDDP_2 129 LVB4P 130 LVB4M 131 LVB3P 132 LVB3M 133 LVBCKP 134 LVBCKM 135 LVB2P 136 LVB2M 137 LVB1P 138 LVB1M 139 LVB0P 140 LVB0M 141 AVDD_LPLL 142 GND_7 143 VDDC_4 144 GPIO150 I2C_OUT_MUTE 145 GPIO151 I2C_OUT_SD2 146 GPIO152 I2C_...

Page 21: ......

Page 22: ...age on Power Board Control Board Check B 5V Y 1 Check Control Board LED on Crystal X400 1 8V 3 3V 1 2V 5V FET Rom update 2 Replace Control B D SVC R C Pattern Check Sound Sound OK Y Close Y Move No Picture No sound Section Check LVDS Cable Replace Main B D Normal N Y N Move Power problem Section Normal Normal Move Power problem Section N VY VSC VZB First of all Check whether all of cable between b...

Page 23: ...re Problem No Picture No Sound Repair Process Check Module pattern by using TILT key on SVC R C Normal N Check Sound Sound OK Y N Move No Picture Sound Ok Section Close Y Check LVDS Cable Replace Main B D Normal Y N Replace Main B D Normal Check Input signal RF Cable connection SCART Cable connection HDMI Cable connection Component Cable 2 Normal Y N Repair Replace IR B D ...

Page 24: ...problem Type Check voltage VY VSC Y Sus B D Normal Picture Replace Y Sus B D Normal Picture Y N 1 Check Control B D 2 Replace Board Normal Picture Check Y Drive B D Replace B D Y Close N Dark Picture Normal Picture Y Replace Module N Close 1 Check Z Sus Board 2 Replace Board Check Picture mode setting Picture Noise Normal Picture Y N Close Y N Check RF Cable Connection Check Tuner Replace Normal P...

Page 25: ...ck whether other equipments have problem or not By connecting RF Cable at other equipment DVD Player Set Top Box Different maker TV etc SVC Bulletin Replace Main B D Check Tuner soldering Normal Picture Y N Y Close Normal Picture Y Close By using signal level meter Signal strength Normal over 50 Signal Quality Normal over 50 Normal Picture Y Contact with signal distributor or broadcaster Cable or ...

Page 26: ...lace Module If Main B D doesn t cause N Y Close 1 Connector re connection 2 Eliminate foreign material on Connector N CTRL B D Control board Check connection of Connector COF TCP on CTRL B D X B D Check connection of Connector FPC on Y Drive B D 1 Connector re connection 2 Eliminate foreign material on FFC 1 Check Y Drive B D 2 Replace Board Normal Picture N Y Close Replace Module 1 Check CTRL B D...

Page 27: ...ressing Power Key On Remote control Normal Close Y N Y Repair Replace IR B D N Check Power cord was inserted properly N Normal Close Y Check ST BY 3 5V on Power Board Normal Voltage N Normal Signal Y Check Power B D Replace Power B D Check AC DET Signal on Power B D Check RL_ON Signal on Power B D N Normal Signal Y Check Main B D Replace Main B D Check the other pin s Output voltage on Power B D N...

Page 28: ...Sus N Power LED Green Y Check Power B D Replace Power B D 1 Check Y Sus Z Sus Board especially Short or Open 2 Replace defective B D To check Power B D Protection Check Power Off History RCU Off 7 Turn off Under watching Off Timer Set Off timer Function off KEY Off 2HOUR Off NO Signal Off Y N Don t appear Power Off History Move No Power problem Section This is not problem Normal operation ...

Page 29: ... Sound N Y Close Y 2 Sound distortion sound drop Check Input signal Cable connection Cable open RF external HDMI SCART Normal Sound Y Close Check AVL off on Clear voiceⅡ off on Y Normal Sound N Close N Problem in all input Problem in external input Case 2 SCART HDMI Check whether Problem happen in same output of other equipments or not By connecting same output cable of other equipment DVD Player ...

Page 30: ...If R C operate Explain the customer cause is interference from light in room Check R C Operating When turn off light in room Check Replace Baterry of R C Check Repair Cable connection Connector solder Normal operating Check B 5V On Main B D Normal Voltage Close N N Check 5v on Power B D Replace Power B D or Replace Main B D Power B D don t have problem Check IR Output signal Normal Signal N Y Repa...

Page 31: ... 1 Dead pixel 2 Image sticking 3 Mal discharge 4 Module defect V Line Bar H Line Bar 5 In case of no picture you can judge defect cause Module or Main B D If patterns appear defect cause is Main B D Tilt Key Making Revision PDP TV Symptom A Picture Problem Check Module pattern by Tilt key Repair Process Reference data Item A1 ...

Page 32: ...ection Y Sus B D Panel 2 Check Y Sus B D 3 Replace Y Sus B D Horizontal Line or Bar 1 Check connection CTRL B D X B D 2 Check CTRL B D 3 Replace CTRL B D Vertical lines or Bar 1 Check connection CTRL B D X B D 2 Check CTRL B D 3 Replace CTRL B D Regular vertical lines To action defects description Symptom picture First of all Check whether all of cable between board was inserted properly or not Ne...

Page 33: ...ence data A20 96 Out Put COF Type 1 Check foreign Connection status 2 Check bad soldering on Chip resistance Defect symptom 192 Out Put TCP Type TCP Tape Carrier Package is film for IC connect with Electrode pattern Direct Bonding on X B D FPC Type Connector to connect between Electrode PAD Of PANEL and Y Drive B D Z Sus B D ...

Page 34: ... Map Power B D Main B D P813 P1100 5V Error_DET 8 7 6 17 15 16 14 No High 3 3V 5V RL_ON High 3 3V 5V AC DET 5V STBY 5V Check the other pin s output High 3 3V 5V Vs ON High 3 3V 5V M5_ON Remark Spec Checking Point P814 1 17V 2 17V 3 GND 4 GND 5 5V 6 5V 7 5V 8 Error_DET 9 GND 10 GND 11 GND 12 GND 13 STBY 14 STBY 15 RL_ON 16 AC_DET 17 M_ON 18 AUTO_GND Wafer SMAW200 H18S2 ...

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