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BBK LT3709S Service Manual Download Page 43

 

 

 

 

42

 

 

AV AUX Board 

 

L3

FB-40-0805-700MA

FRONT_A_R

L5

FB-40-0805-700MA

FRONT_A_L

R3

75

C3

12pF

R5

75

C5

12pF

PHONE_A_L

PHONE_A_D

PHONE_A_R

U2

RClamp0504F

LINE1

1

GND

2

LINE3

3

LINE4

4

VCC

5

LINE2

6

FRONT_A_L

FRONT_A_R

U3

RClamp0504F

LINE1

1

GND

2

LINE3

3

LINE4

4

VCC

5

LINE2

6

L1

FB-40-0805-700MA

L2

FB-40-0805-700MA

C1

12pF

S-Video Input

S_C

FRONT_S_LUMA

R1

75

FRONT_S_CHROMA

R2

75

C2

12pF

FRONT_COMPOSITE

J3

RCA JACK

2

1

FRONT_S_CHROMA

FRONT_S_LUMA

AV Input

FRONT_A_R_IN

J2

RCA JACK

2

1

Audio Input

J4

RCA JACK

2

1

FRONT_A_L_IN

PHONE_A_L_O

PHONE_A_R_O

PHONE_A_D_O

R6

0-R0603

R7

0-R0603

R8

0-R0603

C6

C0603_NC

C7

C0603_NC

PHONE_A_D

PHONE_A_R

PJ1

PHONE JACK-3.5

1

2

4

3

PHONE_A_L

Title

Size

Document Number

Rev

Date:

Sheet

of

GF371-XU

A

AUX AV PCB

B

1

1

Thursday , Nov ember 24, 2005

G

G

C

Y

J1

DIN4

3

4

1

2

S_Y

AUX AV

CVBS

CON1

200PHD-14LT

13

11

9

7

5

3

1

14

12

10

8

6

4

2

FRONT_A_L_IN

PHONE_A_D_O

PHONE_A_L_O

FRONT_A_R_IN

CON1 : FRONT AV INPUT/OUTPUT

FRONT_COMPOSITE

PHONE_A_R_O

200PHD Series 2X8 (16pin)

L4

FB-40-0805-700MA

R4

75

C4

12pF

LINK TO AUX AV PCB 1

CVBS

S_C

S_Y

U1

RClamp0504F

LINE1

1

GND

2

LINE3

3

LINE4

4

VCC

5

LINE2

6

 

 

Summary of Contents for LT3709S

Page 1: ...vice Manual MODEL NO JL321 371 401 XP2 DOC NO EFFECTIVE DATE PAGE REV COPY TO All CONTENTS 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 49 A1 A1 A1 A1 A1 A1 A1 A1 A1 A1 A1 A1 A1 A1 A1 A1 A1 A1 A1 A1 A1 A1 A1 APPROVED BY REVIEWED BY PREPARED BY CONCURRED BY RD RD ...

Page 2: ...1 Service Manual LT3709S ...

Page 3: ...Safety Notices 4 2 Specification 5 3 Front Panel Function Control Description 10 4 Adjusting Procedure 16 5 Trouble Shooting Flow Chart 19 6 Exploded Diagram and Spare Parts List 22 7 Block and Schematic Diagrams 25 8 PCB Layout Diagrams 44 ...

Page 4: ...t the plug into the outlet contact your electrician to replace your obsolete outlet Do not defeat the purpose of the grounding type plug 11 Pay attention to the code which connects with apheliotropism board of inside panel and don t hook it 12 Do not allow anything to rest on the power cord Do not locate this product where persons will walk on the cord 13 If an extension cord is used with this pro...

Page 5: ...ce Treatment Anti Glare coating Haze 25 Hard coating 3H Anti reflective coating 2 reflecting JL371 panel specification Item Specifications Panel Name AUO Panel Model No T370XW01 Display pixels 1366 H x 768 V pixels 1 pixel 1 RGB cells Display Area 819 36mm H x 460 89mm V Pixel Pitch 0 6mm Display Colors 16 7M Pixel Arrangement R G B vertical stripe Brightness 500cd m2 typical Contrast Ratio 1000 1...

Page 6: ... White X 0 280 Y 0 290 typical Response Time 10ms Surface Treatment Hard Coating 3H INPUT Source Connector types Inputs Outputs Signals Video Format TV Analog TV PAL IEC Type TV VIDEO1 Video L R Audio Earphone Out CVBS RCA VIDEO2 Video L R Audio CVBS RCA SCART1 Audio L R in out CVBS in out S Video RGB Scart 21Pin VIDEO3 Scart1 SCART1 SCART2 Audio L R in out CVBS in S Video RGB Scart 21Pin VIDEO4 S...

Page 7: ...al Audio HDMI 19 Pin HDMI2 VGA VGA L R Earphone Analog RGB D SUB 15 Pin VGA AUDIO OUT L R Audio RCA STEREO AC IN AC Power IN AC 100 240V YC14 AC IN Note A SCART connector B HMDI connector is a type A receptacle for video audio mode ...

Page 8: ...1 Red Video 6 Red Ground 11 GND 2 Green Video 7 Green Ground 12 SDA For DDC1 2B 3 Blue Video 8 Blue Ground 13 H sync 4 GND 9 5V from PC 14 V sync 5 Vdd from PC for DDC 10 Sync GND 15 SCL For DDC1 2B D RCA jacks are all female type E Mini DIN CNC 4 Pins SCN570S3NS00000 for S video the pin assignment is described as below HDMI Format DVI 1 0 Level Impedance 0 5 3 0Vp p 100 Ohm Differential 50 Ohm Si...

Page 9: ... HD15 Video Signal YPbPr YCbCr Format Y Pb Pr or Y Cb Cr Level Impedance Y 1 0Vp p 75Ω Pb Cb Pr Cr 0 7 0 035Vp p 75Ω HDMI Timing STANDARD RESOLUTION V FREQ Hz H FREQ kHz CLK MHz ATSC 480i 720x480 60 15 7 27 ATSC 480p 720x480 60 31 5 27 ATSC 1080i 1920x1080 60 33 7 74 2 ATSC 720p 1280x720 60 45 0 74 2 ATSC 576i 720x576 50 15 6 27 RGB PC Timing STANDARD RESOLUTION V FREQ Hz H FREQ kHz CLK MHz VGA 64...

Page 10: ...SDTV 525i 720x525 60 15 735 27 SDTV 625i 720x625 50 15 625 27 SDTV 480p 720x480 60 31 5 27 HDTV 720p 1280x720 60 50 0 74 2 HDTV 1080i 1920x1080 60 33 7 74 2 Power Source AC100 240 V 60 50 Hz Sound Output 10W X2 8 Ohm Signal Connector Pin Assignment Pin Assignment Pin Assignment Pin Assignment 1 Red 6 Red Ground 11 Ground 2 Green 7 Green Gro und 12 SDA 3 Blue 8 Blue Ground 13 Horizontal Sy 4 Ground...

Page 11: ...10 3 Front Panel Function Control Description Operation Adjust and Programming ...

Page 12: ...11 ...

Page 13: ...12 ...

Page 14: ...13 ...

Page 15: ...icture left and right in the window Display Adjustment only for VGA V Position Adjust the position of the picture up and down in the window Cool Nature Warm Set the color temperature type Color Temperature User Red Green Blue 0 255 VIDEO Noise Reduction Strong Middle Low Off Strong Middle Low Off Bass 0 100 50 Fine tune the bass value Treble 0 100 50 Fine tune the treble value Balance 50 50 0 Fine...

Page 16: ...hannel by Manual z Press OK to confirm and display a dialog for setting z Use Left and Right to select PR Start Note that the PR before PR Start number won t be overwrote z EX PR Start 5 PR 1 4 will be kept as usual Update Search z Use up or down key to highlight the item z Use enter to Start Update Search z Press enter to end the search and return Program Edit Edit the channel name z Use up or do...

Page 17: ... Play DVD Y Pr Pb Set the DVD to progressive output Screen is clear and fluent 5 HDTV Y Pb Pr 720p 1080i HDTV Receiver ATSC HDTV Tuner SAMSUNG SIR T165 BS Tuner Panasonic TU BHD300 Component Cable Play HDTV Y Pr Pb Screen is clear and fluent D VHS Digital HDTV Video Cassette Recorder JVC HM DH30000U Panasonic NV DH2 6 VGA HDMI PC VGA Cable DVI Cable PC Mode 1 Each Mode can display normally If ther...

Page 18: ...est disc VIDEO ESSENTIALS Set DVD to interlaced output 1 Select SOURCE then choose VIDEO or S VIDEO 2 Sending the signal from DVD test disc sixth paragraph 3 Switch DVD to output mode NTSC PAL see if there is the action of switch 10 480P 480i switch DVD Component Cable Play DVD test disc VIDEO ESSENTIALS Set the DVD to progressive output P SCAN 1 Select SOURCE then choose VIDEO or S VIDEO 2 Sendin...

Page 19: ...e 1 Press Key Set the high pitch volume 2 Check if the action is normal 3 The initial value is 16 c Bass 1 Press Key Set the low pitch volume 2 Check if the action is normal 3 The initial value is 16 13 d Balance 1 Press Key Set the balance between left right trumpet 2 Check if the action is normal 3 The initial value is located at middle 14 Language adjustment 1 Select required language 2 Initial...

Page 20: ...Color change Check IR LED board J1 U1 D1 Check Keypad Board J1 pin1 pin2 LCD TV ON Check Video Audio Function Make sure the LVDS connection of LCD Panel is fine CN3 Pin7 Active High Check the D SUB 37Pin board CN3 Pin7 Check Inverter Power 24V of LCD Panel OK B Display Check Video Audio Function A Change AD Board BOX Check AC Socket Change AC Socket Fuse C ...

Page 21: ...NO B CN3 PIN5 Active low See Panel SPEC Change the LCD Panel Display Check Video Audio Function Change AD Board BOX A Check the connection of Signal cable Display Check Video Audio Function Change AD Board BOX Change AD Board BOX ...

Page 22: ...K OK NG NG No TV VIDEO and VGA Picture Change AD Board BOX No Audio Change Speaker Check D SUB 37pin CON4 Check Speaker Check Video Audio Function Change AD Board BOX Check Video Audio Function Check Video Audio Function OK C ...

Page 23: ...22 6 Exploded Diagram and Spare Parts List JL321 ...

Page 24: ...23 JL371 ...

Page 25: ...24 JL401 ...

Page 26: ...25 7 Block and Schematic Diagrams ...

Page 27: ...5 220uF 16V Q3 AO4411 SO8 4 5 1 6 7 8 2 3 U3 AZ1117 3 3V AIC1117 SOT223 GOI 123 ADJ GND 1 OUT 2 IN 3 O 4 R20 NC C433 0 1uF L14 120 0805 C20 0 1uF H1 HOLE GND 2 2 3 3 4 4 5 5 9 9 8 8 7 7 6 6 1 1 L11 120 0805 R15 NC U33 AP1084 1 8V adj TO252 3 ADJ GND 1 OUT 3 IN 2 C6 0 1uF L1 FB 300 OHM 2000MA C33 0 1uF EC65 220uF 50V R19 NC 1K R11 U5 AZ1117 3 3V AIC1117 SOT223 GOI 123 ADJ GND 1 OUT 2 IN 3 O 4 R23 0...

Page 28: ...VDDB 4 TESTP4 4 TESTN4 4 TESTP3 4 TESTN3 4 TESTP2 11 RXD1 8 TXD1 8 HDMICEN 8 VREF 6 IR 9 DE_SOG 8 RXD 10 TXD 10 AVICM 4 PWM2VREF 4 DACFS 4 AADCVSS 4 9 VFE_GND1 4 9 REFP 4 REFN 4 GPIO19 9 GPIO20 9 GPIO21 10 GPIO22 8 GPIO23 9 GPIO24 9 GPIO25 9 GPIO26 9 GPIO27 8 GPIO28 7 GPIO29 9 GPIO30 8 GPIO32 9 GPIO33 11 GPIO34 11 GPIO35 11 12 SCL0 10 SDA0 10 IOWR 6 F_OE 6 SCART_FB 9 GPIO36 8 GPIO37 8 GPIO31 9 Tit...

Page 29: ...VDDC 3 TESTP4 3 TESTN4 3 VFE_GND 3 9 LVDS_GND 3 9 AUDIO_GND 3 9 AADCVSS 3 9 VFE_GND1 3 9 REFP 3 REFN 3 Title Size Document Number Rev Date Sheet o f GF271 XP C MT8202 DECOUPLING ANALOG C 4 13 Thursday August 10 2006 NORMAL VIDEO DAC POWER STANDBY ANALOG POWER NORMAL AUDIO ADC DAC POWER NORMAL VIDEO ADC POWER NORMAL ANALOG POWER NORMAL VIDEO DAC POWER V2 L30 120 0603 C91 4 7uF C0805 C82 1uF C52 0 1...

Page 30: ...et o f GF271 XP C MT8202 DECOUPLING DIGITAL B 5 13 Thursday August 10 2006 0603 PUT ON NEARLY BGA 0603 PUT ON NEARLY BGA 0603 PUT ON NEARLY BGA MT8202 DIGITAL POWER DECOUPLING C122 0 1uF C110 0 1uF C117 3300pF C115 10nF C112 0 1uF C108 0 1uF C121 0 1uF C116 3300pF C114 0 1uF C111 0 1uF C119 3300pF C107 0 1uF C109 3300pF C120 0 1uF C118 3300pF C113 0 1uF ...

Page 31: ...63 0R C179 0 1uF R88 22R R66 0R R85 75R C130 0 1uF RN20 47Rx4 1 2 3 4 5 6 7 8 C140 0 1uF C147 0 1uF R89 75R C194 0 1uF R78 4K7 C126 0 1uF C136 0 1uF C166 0 1uF R67 22R EC18 100uF 25V C173 0 1uF U9 29LV160 A0 25 A1 24 A2 23 A3 22 A4 21 A5 20 A6 19 A7 18 A8 8 A19 9 OE 28 BYTE 47 A18 16 D0 29 D1 31 D2 33 D3 35 A9 7 CE 26 D4 38 D5 40 D6 42 D7 44 D8 30 D9 32 A20 10 D11 36 D12 39 D13 41 D14 43 D15 45 VC...

Page 32: ...2 R490 47K C423 0 1uF R482 200R U42 IDTQS3VH257 SOP16 I1C 10 I0D 14 YB 7 I1B 6 I0B 5 YA 4 I1A 3 I0A 2 S 1 VCC 16 GND 8 I0C 11 I1D 13 E 15 YC 9 YD 12 D15 EGA 0402 1 2 C418 0 47uF R105 47K R493 0R D30 EGA 0402 1 2 C413 0 1uF C417 0 47uF D22 EGA 0402 1 2 R474 200R R487 200R C424 0 1uF D3 1N4148 R481 200R R567 NC 0R R104 47K P1 HDMI SMD CON AA HDMI TYPE A 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 1...

Page 33: ...01 1000pF R115 0R C237 0 1uF TP35 R449 NC 0R TP48 C246 0 1uF R138 NC 1M R445 NC 0R R446 33R QF1 N MOS 2N7002 7002 SOT23 GDS 1 2 3 L73 120 0603 R108 NC R139 4K7 C205 1000pF C200 0 1uF C247 10nF C231 0 1uF R117 0R TP36 L42 120 0603 C243 0 1uF TP49 R95 NC R448 0R R452 0R C207 1000pF R110 NC 0 R109 0R RN32 33x4 1 2 3 4 5 6 7 8 C214 1000pF C430 1000pF C244 1000pF C223 0 1uF R441 0R TP44 C249 NC 18pF R4...

Page 34: ..._VCC FOR TUNER POWER USE N MOSFET N MOSFET ANLAOG TUNER 0801 0809 0801 A B A B U22 U23 1 1 AV SCAET1 SCART2 YPbPr 0 0 0 0 1 1 1 1 1 1 1 1 1 1 0 0 0 0 1 1 VGA DVI FRONT AUDIO OUT X X X X X X HI SWSY1 LOW SWSY0 R426 4K7 J5 HEADER 9X2 2 0 2 4 6 8 10 12 14 16 18 1 3 5 7 9 11 13 15 17 R167 0R EC30 33uF 16V C292 330pF C285 0 1uF R181 NC 0 C326 10nF R259 100R U23 74HCT4052 SOP16 X0 12 X1 14 X2 15 X3 11 Y...

Page 35: ...l E Option RESET CIRCUIT SYSTEM EEPROM H WP DISABLE L WP ENABLE FOR Download 8202 5351 R262 68R R413 0R U26 EEPROM 24C16 SO08 NC 1 NC 2 NC 3 GND 4 SDA 5 SCL 6 WP 7 VCC 8 L56 2 2uH C334 4700pF R293 100K 1 3 2 4 SW1 SW4 1 4 3 2 C335 10nF R281 510R R275 75R R283 0R C339 5pF R134 0R C342 5pF R131 0R U21 IDTQS3VH257 SOP16 I1C 10 I0D 14 YB 7 I1B 6 I0B 5 YA 4 I1A 3 I0A 2 S 1 VCC 16 GND 8 I0C 11 I1D 13 E ...

Page 36: ...Q16 MMBT3906 1 3 2 R346 33R EC75 NC 100uF 25V R520 20K U30B NC NJM4558 OPA 5 6 7 8 4 Q19 2SD2653K 1 2 3 R342 0R R377 NC 10K R350 33R R533 NC 10K EC74 NC 100uF 25V C439 2200pF U30A NC NJM4558 OPA 3 2 1 8 4 EC39 10uF 25V R368 20K R317 33R R343 0R R364 51R EC52 10uF 25V C367 2200pF R324 NC 33 R345 0R R460 0R R458 10R L61 120 0603 EC40 10uF 25V EC53 10uF 25V R348 0R EC37 47uF 25V C355 NC 0 1uF EC70 10...

Page 37: ...DDP2 20 BOOT2 21 OUT2 22 VSSP2 23 STAB2 24 STAB1 25 VSSP1 26 OUT1 27 BOOT1 28 VDDP1 29 HVP1 30 OSCIO 31 VSSDHW 32 L64 FB 300 OHM 2000MA C381 15nF 0805 R399 39K 0805 R536 1M C379 0 1uF 0805 C435 0 1uF 0805 C391 470nF 0805 R390 NC 100K R396 47K C372 0 1uF 0805 C390 0 1uF 0805 C385 0 1uF 0805 EC59 220uF 50V J7 HEADER 2X1 2 0 1 2 C393 470nF 0805 EC61 47uF 50V C387 0 1uF 0805 C389 0 1uF 0805 R437 12K R...

Page 38: ..._G_GND SCT1_B_GND SCT1_R_GND SCT1_AUR_OUT SCT1_AUL_OUT AUDIOL_OUT AUDIOR_OUT AVV50 AVV33 AVV33 AVV33 SCT1_AUR_OUT 2 SCT1_AUL_OUT 2 SCT1_AV_OUT 2 AV1CVBS 3 SCT1_AV 2 SCT2_AV 2 SCT1_SC 2 SCT2_SC 2 SCT2_GRN 2 SCT2_BLU 2 SCT2_RED 2 VGAR_IN 3 VGAL_IN 3 SCT2_AUR_IN 2 SCT2_AUL_IN 2 SCT1_AUR_IN 2 SCT1_AUL_IN 2 YPBPR1R_IN 3 YPBPR1L_IN 3 AV1R_IN 3 AV1L_IN 3 DVIR_IN 3 DVIL_IN 3 SCT1_AVO_GND 2 AUDIOR_OUT 3 AU...

Page 39: ... SCT1_AUR_OUT SCT2_AUL_IN 1 SCARTSEL 1 SCT2_FB 1 SCT1_GRN 1 SCT1_BLU 1 SCT1_RED 1 SCT1_FB 1 SCT2_GRN 1 SCT2_BLU 1 SCT2_RED 1 SCT2_G_GND 1 SCT2_B_GND 1 SCT2_R_GND 1 SCT1_G_GND 1 SCT1_B_GND 1 SCT1_R_GND 1 Title Size Document Number Rev Date Sheet o f Doc B SCART AUDIO VIDEO IN OUT A3 2 4 Tuesday August 01 2006 CVBS SV SCTSOG IN SCART1 I F CVBS SV SCTSOG IN AUDIO IN CVBS OUT DELECT AUDIO OUT SCART2 I...

Page 40: ...o Input YPbPr CVBS DVI VGA Audio Input AUDIO Output Component IN CVBS IN VIDEO I F AUDIO I F Component IN CVBS IN DVI IN VGA AUDIO OUT YPBPR INPUT Composite INPUT VGA AUDIO INPUT AUDIO OUTPUT DVI AUDIO INPUT 0710 C16 330pF R75 10K C29 0 01uF FB14 0R R78 10K C18 47pF C23 0 01uF D30 NC 1 2 C28 0 01uF CON8 RCA 1X1 RED R 1 GND 2 D22 NC 1 2 C20 330pF R73 18R_1 R80 10K C22 0 01uF D24 NC 1 2 C30 0 01uF R...

Page 41: ...SORPCB A 1 1 Tuesday December 20 2005 Q1 MMBT3904 B E C R4 47 R6 47 R3 560 LED_O LED_G B MMBT3904 C E VCC U1 IR SENSOR O 1 G 2 V 3 VCC VCC Q2 MMBT3904 B E C VCC VCC LED_G LED_O GND C1 0 1uF Hous5P 1 0h R5 560 J1 CON5 1 2 3 4 5 D1 DIP LED D3 IR OUT VCC R2 10K R1 100 C2 10uF 0805 ...

Page 42: ...P MENU CH DOWN Title Size Document Number Rev Date Sheet of GF371 XU A KEYPADPCB A 1 1 Friday September 30 2005 R1 4 7K R2 4 7K R3 4 7K R4 4 7K R5 4 7K J1 CON9 1 2 3 4 5 6 7 8 9 GND Hous 9P 1 0 C1 0 1uF VCC VOL DOWN VOL UP VCC SW6 VOL UP SW7 VOL DOWN R6 4 7K R7 4 7K ZD7 5 6V ZD6 5 6V ZD5 5 6V ZD4 5 6V ZD3 5 6V ...

Page 43: ...ONT_A_R_IN J2 RCA JACK 2 1 Audio Input J4 RCA JACK 2 1 FRONT_A_L_IN PHONE_A_L_O PHONE_A_R_O PHONE_A_D_O R6 0 R0603 R7 0 R0603 R8 0 R0603 C6 C0603_NC C7 C0603_NC PHONE_A_D PHONE_A_R PJ1 PHONE JACK 3 5 1 2 4 3 PHONE_A_L Title Size Document Number Rev Date Sheet of GF371 XU A AUXAVPCB B 1 1 Thursday Nov ember 24 2005 G G C Y J1 DIN4 3 4 1 2 S_Y AUX AV CVBS CON1 200PHD 14LT 13 11 9 7 5 3 1 14 12 10 8 ...

Page 44: ...FRONT_S_LUMA FRONT_A_R_IN PHONE_A_R_O FRONT_S_CHROMA FRONT_COMPOSITE FRONT_A_L_IN PHONE_A_D_O CON2 200PHD 14LT 13 11 9 7 5 3 1 14 12 10 8 6 4 2 LTDC_DATA LTDC_CLK LTDC_INT SW2 SOURCE IR OUT LTDC_ADDR LED_G LED_O SW6 VOL UP SW5 CH DOWN SW3 MENU SW7 VOL DOWN SW4 CH UP SW1 POWER SPK_R_OUT SPK_L_OUT SPK_R_OUT SPK_L_OUT ADJ_INV VBLON SPK_R_OUT SPK_R_OUT SPK_L_OUT SPK_L_OUT PHONE_A_L_O PHONE_A_D_O CON3 ...

Page 45: ...44 8 PCB Layout Diagram Main Board Component Side Top ...

Page 46: ...45 Main Board Component Side Bottom IO Board L1 component side ...

Page 47: ...46 IO Board L2 GND COMP IO Board L3 VCC COMP IO Board L4 soloer side BOT Keypad Board Component Side Top Keypad Board Component Side Bottom IR LED Board Component Side Top ...

Page 48: ...47 IR LED Board Component Side Bottom AUX AV Board Component Side Top ...

Page 49: ...48 AUX AV Board Component Side Bottom D SUB 37 Pin Board Component Side Top ...

Page 50: ...49 D SUB 37 Pin Board Component Side Bottom ...

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