LG MDD105 Service Manual Download Page 45

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3-40

8. MIC / USB / KEY / VFD CIRCUIT DIAGRAM

LG-MDT355

MIC/USB/KEY1/2/3/VFD

HEADPHONE

USB SOCKET

USB/PHONE BOARD

TO MAIN PCB PWM

TO MAIN PCB ESS

USB_GND2

USB_GND

D+

D-

USB_VCC

MIC BOARD

F-

-VKK

GND

+5V

D-STB

D-DATA

D-CLK

REMOT

E-

INT

DGND

L+

L-B

+12V

KEY1

KEY3

VOL_LED1

VOL_LED2

VOL_LED3

VOL_LED4

VOL_LED5

VOL_LED6

VOL_LED7

VOL_LED8

MIC_SENS

GND

MIC OUT

KEY1 PCB

KEY3 PCB

VFD BOARD

HP-SENS

HP-L

AGND

HP-R

TO MAIN PCB ESS

KEY1-1

DGND

KEY3-1

DGND

KEY1-1

DGND

KEY3-1

DGND

KEY2

KEY2 PCB

TO MAIN PCB MICOM

KEY3

F+

+12VA

VOL_LED1

VOL_LED2

VOL_LED3

VOL_LED4

VOL_LED5

VOL_LED6

VOL_LED7

VOL_LED8

+12VA

VOL_LED1

VOL_LED2

VOL_LED3

VOL_LED4

VOL_LED5

VOL_LED6

VOL_LED7

VOL_LED8

LED BOARD

TO LED BOARD

R924

3K3

R941

8K2

R923

2K2

R946

8K2

R922

1K8

R921

1K2

SW907

TUNNG+

SW904

OPEN/CLOSE

SW902

TAPE

SW917

TIMER

SW901

TUNER

SW915

DVD

SW903

AUX

SW906

STOP

SW908

R918

1K2

R919

SW911

SET/CD PAUSE

R920

1K2

SW920

SW918

CLOCK

SW921

LG EQ

C915

104

C914

47U/50V

R906

100R

C907

47U

/16V

C917
473

C916

473

C918

104

FB905

R939

3K3

V-

V+

P901

FM-6038TM2-5A

JK901

HP JACK(3.5mm TC38-103-01)

D+

D-

V+

V- 12

JK902

C919

220U/10V

R925

1K2

SW913

POWER

SW914

USB/DEMO

C912

104

C910

47U

/16V

C909

104

R909

82K

R911

100K

R912

CLK

DIN

STB

DOUT

OSC

GND

VDD

SG1/KS1

SG2/KS2

SG3KS3

SG4/KS4

SG5/KS5

SG6/KS6

SG7/KS7

SG8/KS8

SG9/KS9

SG10/KS10

SG11/KS11

SG12/KS12

SG13/KS13

SG14/KS14

SG15/KS15

SG16/KS16

SG17

27 SG18

28 SG19

29 SG20

30 SG21

31 SG22

32 SG23

33 SG24

34 GR1

35 GR2

36 GR3

37 GR4

38 GR5

39 GR6

GR7

GR8

GR9

GR10

GR11

GR12

GR13

GR14

GR15

GR16

GND

U901

PT6324(QFP52)/ET8862

R910

100K

C913

104

R948

15K

R949

15K

C906

104

SW912

PRESET-

SW910

TUNNG-

SW909

AUTO DJ

SW923

XDSS/MP3 OPT.

SW922

USER EQ

SW905

SW916

DISCSKIP

R940

5K6

R943

3K3

R930

2K2

R929

1K8

R928

1K2

R926

R927

1K2

R944

3K3

R945

5K6

MARK

HNA-15MM40T

VFD

15G

14G

13G

12G

11G

10G

F+

VFD901

LG_MCT355_VFD-A

FB901 10uH

R913

R914

C911

100P

R915

100K

R903

15R

R904

100K

R902

15R

R901

15R

C902

47U

/16V

C901

104

C903

104

R905

100K

C905

47U

/16V

C904

104

D901

IN4001

D902

IN4001

C908

47P

R907

330K

R908

100R

VR901

R917

10K

R916

10K

R942

18K

SW919

CD SYNC

Q901

9014

D916

BLUE

R923A
471/0805

R931

10K

Q902

9014

D915

BLUE

R926A

471/0805

R932

10K

Q903

9014

D914

BLUE

R927A
471/0805

R933

10K

Q904

9014

D913

BLUE

R928A

471/0805

R934

10K

Q905

9014

D912

BLUE

R929A
471/0805

R935

10K

Q906

9014

D910

BLUE

R938A
471/0805

R936

10K

Q907

9014

D918

BLUE

R939A

471/0805

R937

10K

Q908

9014

D917

BLUE

R940A

471/0805

R938

10K

2
3

7
8
9

JK903

MIC1

2
3

7
8
9

JK904

MIC2

R950

22K

R951

22K

FB902

100M 70R

FB903

3.3uH

FB904

3.3uH

1
2
3
4

CN904

CN901

CN903

CN902

CON903

CON902

FB906

FB907

FB908

100M 70R

FB910

100M 600R

911

100M 600R

FB912

100M 600R

FB913

100M 600R

FB914

100M 600R

FB915

100M 600R

FB916

100M 600R

FB918

100M 70R

100M 600R

R958
3K3

R961
8K2

R957
2K2

R956

1K8

R955

1K2

SW930

SW927

ECHO VOL-

SW925

MIC VOL-

SW933

SW924

MIC VOL+

SW926

ECHO VOL+

SW929

SW931

R952

1K2

R953
1K

R954
1K2

SW934

R959

3K3

SW928

SW932

R960

5K6

R962
18K

SW935

R963
39K

SW936

R964
47K

SW937

FB922

100M 70R

R900
39K

R975
100K

R976
100K

C922

682

C923

682

R973 56K

R974

56K

C920
104

C921
104

CN906

R977

10K

C926

100P

C925

100P

FB223

C924 104

GND

INPUT

OUTPUT

ALC

VCC

IC1

S4308

BAN57059401

100K

C2
NC

L1
FB2500

R1
220R

100uF

16V

104P

1uF

50V

47K

220R

22uF

16V

100uF

16V

100K

104P

1
2
3
4

CN905

CON901

C927

103

C928

103

CON1001

CON906

VFD

P18
P19
P20

GR15

GR14

GR13

GR12

GR11

GR10

GR09

GR08

GR07

GR06

GR05

GR03
GR04

GR02

GR01

GR02

GR03

GR04

GR05

GR06

GR07

GR08

GR09

GR10

GR11

GR12

GR13

GR14

GR15

GND

F+

F-

GND

DGND

GND

F-

F+

DGND

GND

GND GND

GND

MIC_SENS

+12VA

MIC_OUT

GND

(2010. 06.14)

Summary of Contents for MDD105

Page 1: ...SERVICE MANUAL MODEL MDD105 MDS105V CAUTION BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL MODEL MDD105 MDS105V SERVICE MANUAL P NO AFN73972690 JUNE 2010 Website http biz lgservice com Internal Use Only ...

Page 2: ...CONTENTS SECTION 1 SUMMARY SECTION 2 CABINET MAIN CHASSIS SECTION 3 ELECTRICAL SECTION 4 REPLACEMENT PARTS LIST 1 1 ...

Page 3: ...SECTION 1 SUMMARY CONTENTS SERVICING PRECAUTIONS 1 3 ESD PRECAUTIONS 1 5 SERVICE INFORMATION FOR EEPROM 1 6 SOFTWARE UPGRADE PROCESS 1 7 SPECIFICATIONS 1 8 1 2 ...

Page 4: ... the eyes Absolutely never permit laser beams to enter the eyes Also NEVER switch ON the power to the laser output part lens etc of the pick up if it is damaged 5 Cleaning the lens surface If there is dust on the lens surface the dust should be cleaned away by using an air bush such as used for camera lens The lens is held by a delicate spring When cleaning the lens surface therefore a cotton swab...

Page 5: ...eplacing a component part first disconnect the power supply lead wire from the unit 2 All equipment measuring instruments and tools must be grounded 3 The workbench should be covered with a conductive sheet and grounded When removing the laser pick up from its conductive bag do not place the pick up on the bag This is because there is the possibility of damage by static electricity 4 To prevent AC...

Page 6: ... damage ESD devices 5 Do not use freon propelled chemicals These can generate electrical charges sufficient to damage ESD devices 6 Do not remove a replacement ESD device from its protective package until immediately before you are ready to install it Most replacement ESD devices are packaged with leads electrically shorted together by conductive foam aluminum foil or comparable conductive materia...

Page 7: ...on and make changes with Rmc skip mode play key Press STOP key FLD write ok Remote control Fwd skip Front STOP push same timing FLD E2P CLR Completed NAME OPT 0 OPT 1 OPT 2 OPT 3 OPT 4 OPT 5 OPT 6 OPT 7 OPT 8 OPT 9 DETECT NEW EEPROM OPTION EDIT SCREEN HEX 00 00 00 00 00 00 00 00 00 00 1 6 SERVICE INFORMATION FOR EEPROM ...

Page 8: ...rt the USB flash into USB host 3 Set Function to USB position Appear onto VFD UPGRADE 4 After finish Set will automatically power off 2 FLASH MEMORY UPGRADE 1 Copy the software file into USB flash As the file name is LG_MDD105_XXXXXXX RO 2 Insert the USB flash into USB host 3 Set Function to USB position Appear onto VFD CODE 00 NO USB 4 Manual Power off and Power on is finish 1 7 SOFTWARE UPGRADE ...

Page 9: ...22 to 1 620 kHz 520 to 1 710 kHz or 522 to 1 710 kHz AM Intermediate Frequency 45 kHz AMPLIFIER Output Power Front 50 W x 2 USB Bus Power Supply USB DC 5 V 500 mA USB Version USB 2 0 or USB 1 1 CD Frequency Response 40 to 20 000 Hz Signal to noise ratio More than 60 dB Dynamic range More than 50 dB TAPE F F REW Time 120 sec C 60 Frequency Response 250 to 8 000 Hz Signal to Noise Ratio 40 dB Channe...

Page 10: ...SECTION 2 CABINET MAIN CHASSIS CONTENTS EXPLODED VIEWS 2 3 1 CABINET AND MAIN FRAME SECTION MDD105 2 3 2 TAPE DECK MECHANISM SECTION 2 5 3 SPEAKER SECTION 2 7 4 PACKING ACCESSORY SECTION 2 8 2 1 ...

Page 11: ...2 2 MEMO ...

Page 12: ... I SMPS O G N N Q 252 A00 269 270 268 A46 271 A47 300 273 272 A43 A49 459 256 255 251 258 257 254 253 261 265 262 259 A45 263L 264L 264R 266L 266R 267L 267R A41L A41A A41R 263R CABLE1 CABLE2 250 KEY2 MIC KEY3 KEY1 VFD LED USB A48 CABLE3 A01 A26 281 452 452 453 453 454 453 456 456 454 454 452 451 451 456 458 458 458 458 458 458 Q ...

Page 13: ...2 5 2 6 2 TAPE DECK MECHANISM SECTION A00 003 009 011 009 A02 015 007 001 037 A01 018 017 006 020 019 022 023 025 ...

Page 14: ...2 7 LEFT RIGHT SPEAKER MDS105V 3 SPEAKER SECTION A60 ...

Page 15: ...2 8 Battery 808 Remote controller 900 Instruction Ass y 801 Packing 803T Packing 803B Box 802 Bag 804 825 FM antenna 824 AM antenna 4 PACKING ACCESSORY SECTION ...

Page 16: ... DRIVE AND MOTOR WAVEFORM 3 18 4 SPINDLE DRIVE AND MOTOR WAVEFORM 3 19 5 RF FOCUS AND TRACKING ERROR WAVEFORM 3 20 WIRING DIAGRAM 3 21 BLOCK DIAGRAM 3 23 CIRCUIT DIAGRAMS 3 25 1 SMPS POWER CIRCUIT DIAGRAM 3 25 2 MAIN DVD MPEG CIRCUIT DIAGRAM 3 27 3 MAIN MCU CIRCUIT DIAGRAM 3 29 4 MAIN SERVO CIRCUIT DIAGRAM 3 31 5 MAIN D AC CIRCUIT DIAGRAM 3 33 6 MAIN AMP CIRCUIT DIAGRAM 3 35 7 AUDIO DECK SYSTEM CI...

Page 17: ...s open D6 DB105G 1 1 2 2 3 3 4 4 3 D16 FR104 D5 UF 56k C23 104 275V C24 472 C18 472 W16 Jumper 1 2 C21 471 400V R16 1 5M 0 5W LT U3 FSFM260N GND 1 Vcc 2 Vfb 3 Ipk 4 Vstr 5 DRAIN 6 DRAIN 7 DRAIN 8 D11 FR104 R17 47k C22 471 400V RV1 471 C19 22uF 50V C14 47uF 50V t RT1 2 7ohm 5W W6 Jumper 1 2 C9 68uF 450V C3 103 630V C17 104 275V C1 68uF 450V R25 10 W7 Jumper 1 2 R13 47k W17 Jumper 1 2 LF1 SQE2424 1 ...

Page 18: ...abel C27 2 2uF 50V PC3 LTV 817 1 1 2 2 3 3 4 4 C28 103 630V R10 560 W15 Jumper 1 2 R14 18k R19 2 2k U5 KA431 TO C32 224 R23 33k W18 Jumper 1 2 D18 UG4D T2 EER2828 AMP 1 2 3 4 5 6 7 8 R18 56k 2W U6 KA431 TO R28 470 R26 220 R27 150 R11 56 W13 Jumper 1 2 C29 1000uF 25V W19 Jumper 1 2 R21 33k R24 33k R20 2k R29 4 7k R12 2 7k W9 Jumper 1 2 R15 2 7k PC1 LTV 817 C26 2 2uF 50V C30 1000uF 25V D19 UF4007 R2...

Page 19: ... W3 Jumper 1 2 Q2 KTA1273 C20 330uF 16V R10 560 Q1 KTC3205 R8 1k C15 47uF 50V C11 100uF 6 3V R2 10k C8 100uF 16V R6 10k W2 Jumper 1 2 R5 18k W10 Jumper 1 2 C7 1000uF 25V C13 100uF 25V U4 278R33 IN 1 OUT 2 GND 3 CON 4 U1 78R05 IN 1 OUT 2 GND 3 CON 4 W11 Jumper 1 2 C5 1000uF 16V D9 1N4148 W14 Jumper 1 2 R4 1k C6 100uF 6 3V D10 1N4148 C16 47uF 50V W12 Jumper 1 2 J2 15P 1 2 3 4 5 6 7 8 9 10 11 12 13 1...

Page 20: ... 5 6V 3 VKK 2 FL 1 FL Q3 KTA1268 W3 Jumper 1 2 Q2 KTA1273 C20 330uF 16V R10 560 Q1 KTC3205 R8 1k C15 47uF 50V C11 100uF 6 3V R2 10k C8 100uF 16V R6 10k W2 Jumper 1 2 R5 18k W10 Jumper 1 2 25V C13 100uF 25V U4 278R33 IN 1 OUT 2 GND 3 CON 4 U1 78R05 IN 1 OUT 2 GND 3 CON 4 W11 Jumper 1 2 C5 1000uF 16V D9 1N4148 W14 Jumper 1 2 R4 1k C6 100uF 6 3V D10 1N4148 C16 47uF 50V W12 Jumper 1 2 J2 15P 1 2 3 4 5...

Page 21: ...04 D5 UF4007 R1 56k 2W R8 1k C11 100uF 6 3V D15 FR104 R2 10k C8 100uF 16V D7 SHG2D R5 18k C7 1000uF 25V C13 100uF 25V R3 10 U4 278R33 IN 1 OUT 2 GND 3 CON 4 IN 1 OUT 2 GND 3 CON 4 C5 1000uF 16V U3 FSFM260N GND 1 Vcc 2 Vfb 3 Ipk 4 Vstr 5 DRAIN 6 DRAIN 7 DRAIN 8 R4 1k D11 FR104 C14 47uF 50V D8 SR306 W Q4 KTC3205 C10 1000uF 16V R9 1 C3 103 630V W7 Jumper 1 2 W17 umper 1 2 1 1 2 2 3 3 4 4 5 5 15 15 11...

Page 22: ...19 VCC2 20 IN5 21 IN4 22 GND 23 BIAS 24 CTL5 25 REV5 26 FWD5 27 DO6 28 DO6 0 3 D N G P 9 2 PGND IC401 IP9011 C419 473P R444 9K1 R404 20K R447 1K R422 1K C421 103P C425 103P R452 100R R408 3K3 C414 104P C409 220uF 10V R432 56K R4A2 9K1 R4A1 27K C413 104P L408 FB2500 C428 104P C408 220uF 10V C439 100P C438 100P C402 XX R4A0 9K1 R4A3 33K R417 33R C435 104P C440 104P R402 1K2 R448 1K2 R424 8K2 R410 5K...

Page 23: ...shoot Countermeasure 1 Check 5 V CD voltage 2 Check 3 3 V 3 Check X501 X100 4 Check IC100 to IC1 communication resistor R84 R109 R110 R581 5 Check IC1 to IC502 communication resistor R83 R541 R542 6 Check ESS8390 SERVO voltage 1 5 V up to snuff instead IC501 3 4 3 Service hint Any picture Remark 3 8 ONE POINT REPAIR INSTRUCTION ...

Page 24: ...ot up normally 4 1 IC503 W25Q16A IC3 SN74LV00A 4 1 1 Solution Replace IC503 IC3 on main board 4 1 2 How to troubleshoot Countermeasure 1 If 3 3 V haven t on main board of P1 please check P SENS 5V come out or not Please check D1 or replace D1 on SMPS 2 Check or replace L509 4 1 3 Service hint Any picture Remark 3 9 ONE POINT REPAIR INSTRUCTION ...

Page 25: ...f 5V normal first check R100 R101 R102 OK Check the IC101 out and check the zener diode ZD101 voltage if between 4 18 4 3 V main pcb 3 After changging it the SET is still not booting please check 5 6 VA at P7904 come out Please check or replace diode D3 or L1 on the SMPS board Other check the main MCU reset IC U101_KIA7027 of replace it check or replace D101 D102 main PCB bottom 4 All of changed t...

Page 26: ...ill not boot up normally 4 3 X100 4 3 1 Solution Replace X100_9 8304 MHz on main board 4 3 2 How to troubleshoot Countermeasure 1 If 5 6 V normal Please check D101 D102 2 Check X100 pin1 2 voltage is 2 46 V or not replace it 4 3 3 Service hint Any picture Remark 3 11 ONE POINT REPAIR INSTRUCTION ...

Page 27: ... not boot up normally 4 4 X101 4 4 1 Solution Replace X101_32 768 kHz on main board 4 4 2 How to troubleshoot Countermeasure 1 If 5 6 V normal Please check D102 D102 2 Check X101 pin1 2 voltage is 2 26 V or not then replace it 4 4 3 Service hint Any picture Remark 3 12 ONE POINT REPAIR INSTRUCTION ...

Page 28: ...1 1 Solution Replace IC604_PS9831 on main board 5 1 2 How to troubleshoot Countermeasure 1 Check 3 3 V 2 Check X601 crytal operation 3 Check IC604 to IC700 communication resistor R798 R703 R704 R709 R719 R708 4 Check PWM waveform at R799 R731 R732 R736 R737 R746 5 If check all of OK please replace IC604 5 1 3 Service hint Any picture Remark 3 13 ONE POINT REPAIR INSTRUCTION ...

Page 29: ... IC700 IC701 on main board 5 2 2 How to troubleshoot Countermeasure 1 Check 12 V 36 V 2 Check IC700 IC701 12 V power supply resistor R701 R702 R724 R727 R726 R729 R730 R787 R753 3 Check signal out at L709 L708 L710 L716 L715 L711 L707 L712 4 Check all of OK please replace IC700 IC701 5 2 3 Service hint Any picture Remark 3 14 ONE POINT REPAIR INSTRUCTION ...

Page 30: ...1 PT6324 6 1 1 Solution Replace PT6324 on VFD display board 6 1 2 How to troubleshoot Countermeasure 1 Check F _ 22V F _ 25V VKK_ 26V VDD_ 5 6V 2 Check IC100 to U901 communication resistor R912 R913 R914 3 Check FB914 FB907 FB906 FB918 FB908 FB910 FB911 4 If check all of OK please replace U901 6 1 3 Service hint Any picture Remark 37 3 15 ONE POINT REPAIR INSTRUCTION ...

Page 31: ... YUV4 79 FDAC YUV7 80 VDAC YUV6 IC1 ESS8390 8391SCC 1 2 3 5 7 4 6 8 R5A1 10R 1 2 3 5 7 4 6 8 R5A4 10R R541 33R R83 33R R542 33R C539 104 C542 104 1 2 3 5 7 4 6 8 R5A5 10R 1 2 3 5 7 4 6 8 R5A7 10R C535 104 R581 33R R109 100R R110 33R R84 33R R543 33R R566 33R C79 104 C541 104 R X NC R5B6 NC R5B9 0R C549 104 C78 220uF 16V R5B7 FB600 C550 104 R5B8 10R R5A8 FB272 R554 FB272 R558 FB272 C551 104 C540 10...

Page 32: ...8 0_VFD_CLK 29 0_DVD_RST 30 0_HP_MUTE 31 I_VOL_B 32 I_VOL_A 33 NC 34 0_PWM_RST 35 0_BQ_RST 36 0_ADC_RST 37 0_BQ_STB 38 0_DSP_RST IC100 LC87F5NC8A R166 100R 1 IN 2 DGND 3 OUT IC101 KIA7042AF R102 680R 2 R101 4K7 R100 4K7 TP210 HP_MUTE DVD_RST VFD_CLK VFD_STB VFD_DO DVD_CLK DVD_DI DVD_DO LBAF B SPBANA MIC_SENS VOL_B VOL_A TP211 PWM_RST BQ_RST BQ_STB TP112 PWR_SENS 6 5 IC100 Pin25 DVD_CLK IC100 Pin25...

Page 33: ...24 8K2 R410 5K1 C404 100uF 10V C451 104P C423 474P C420 474P TURD_N TURD_N TURO TURO GND SVREF SPINDLBD SLD SLED SLED SPIN SPIN D B B F0D F0D TRD TRD SLD SLD SPINDLBD SPINDLBD CD_DVD_SLCT CD_DVD_SLCT DRV_MUTE DRV_MUTE CDLD CDLD DVDLD DVDLD DVDMDI DVDMDI VC VC SVREF SVREF OPEN OPEN CLOSE CLOSE OUT_SW OUT_SW IN_SW IN_SW UP_SW UP_SW DOWN_SW DOWN_SW SPNN SPNN SPNP SPNP PU_DET PU_DET SENSOR SENSOR TURO...

Page 34: ... MUTE 9 CTL3 10 REV3 11 FWD3 12 SVCC 13 DO3 3 O D 4 1 D N G P 9 2 IC401 IP9011 C419 473P R444 9K1 R404 20K R447 1K R422 1K C421 103P C425 103P R452 100R R408 3K3 C414 104P C409 220uF 10V C413 104P C428 104P C408 220uF 10V C439 100P C438 100P C188 NC F F TR TR F0D TRD D N G D N G DRV_MUTE CLOSE OPEN GND LOAD LOAD GND GND 10 9 IC401 Pin6 FOD IC401 Pin3 F ...

Page 35: ...MIN 144 H 143 G 142 F 141 E 140 D 139 C 138 B 137 A 136 DRFP 135 DRFN 134 VGA 133 VPA 132 SPNP MNTRP IMSR 131 SPNN MNTRN 130 AGC1 129 AGC2 IC1 ESS8390 8391SCC R82 4 7K C16 104 C15 100uF 16V L3 FB2500 C76 104 C508 100uF 16V C5C9 104 L511 FB252 C77 680p C5C1 680p C5A7 104 C543 104 C5A1 104 C5A2 104 C91 104 C92 104 C93 104 C75 104 C94 154 C95 102 C585 472 C96 NC C97 NC C98 223 R5B0 10K C99 102 C100 1...

Page 36: ...O T Controller 2P LEFT RIGHT Y U V VIDEO OUT PUT AUX IN PUT MAIN BOARD PCB FM ANTENNA AM ANTENNA SIP1 P7709 P400 P406 SIP2 P1 CN1 P7904 CN3 P7905 P33 CON901 P7906 P7709 VFD DISPLAY KEY BOARD IR CN902 KEY2 PCB KEY1 PCB CN903 CON903 CON902 2P MDD105 SMPS_100W J1 J2 8P 15P FFC 23P CRP42602 LOGIC DECK EAZ35771501 6P 7p 9P MIC PCB CN905 Shief cable 3P KEY3 PCB 3P 5P CN906 3 DISC DVD DECK CMS S79RFVC FF...

Page 37: ...L128168A 6TG SDRAM 128M PS9831 PWM SOUND PROCESSOR WM8738 ADC D4558 OP Amp BU4052 SWITCH LC87F5NC8A MCU FT24C16 EEPROM 16K AM FM Tuner Module YST996 Portable In D4558 HP Amp L Key Control R Key Control S4308 Mic Amp ALC CD L R KIA6225 P B AMP BA3308S REC AMP BA3216 R P SWITCH CRP42602 LOGIC DECK Logic Deck Control circuit Disc Select 27V 12V D D P Sense 12V 12V 3 5V P Cont FL FL VKK KEY0 KEY1 KEY2...

Page 38: ... D5 UF4007 C28 103 630V R1 56k 2W C23 104 275V JR1 MT_HOLE 1 1 R10 560 W15 Jumper 1 2 R14 18k Q1 KTC3205 R19 2 2k JR3 MT_HOLE 1 1 R8 1k U5 KA431 TO C24 472 C32 224 R23 33k W18 Jumper 1 2 C18 472 D18 UG4D W16 Jumper 1 2 C15 47uF 50V T2 EER2828 AMP 1 2 3 4 5 6 7 8 C11 100uF 6 3V D15 FR104 R2 10k C8 100uF 16V R6 10k C21 471 400V R18 56k 2W U6 KA431 TO W2 Jumper 1 2 D7 SHG2D R5 18k W10 Jumper 1 2 C7 1...

Page 39: ... NC R5B9 0R C549 104 C78 220uF 16V R5B7 FB600 C550 104 R5B8 10R R5A8 FB272 R554 FB272 R558 0R C551 104 C540 104 R5B2 FB600 C81 104 R5A0 390 1 C85 104 C86 104 L524 FB2500 C529 104 C87 100uF 16V R85 33K R540 22K C88 473 C89 104 C90 104 L522 FB2500 C516 105 C591 100uF 16V L519 FB2500 R560 33R HB 121 R86 33R HB 121 C91 104 C92 104 C93 104 C75 104 C94 154 C95 102 C585 472 C96 NC C97 NC C98 223 R5B0 10K...

Page 40: ...25 10uF 50V R803 220R R840 33R R839 1K R836 33R R835 33R R832 33R R834 4K7 R838 4K7 FB800 FB600 R65 X 10K C29 820P R897 X 10K C30 820P FB901 NC C836 100uF 16V C834 104P R60 100R R59 100R R58 100R R57 100R R129 100R R162 100R R56 100R R55 100R R170 100R R169 100R R184 100R R183 100R R178 100R R181 100R 1 2 3 4 5 6 7 8 P7904 8P 2 0MM C873 104P C882 104P C883 104P C884 104P C887 104P R849 10K R848 1K...

Page 41: ...00P C438 100P C402 104P R417 33R C435 104P R402 1K2 R448 1K2 R424 4K7 R410 470R C423 474P C420 474P R419 22K R451 0R R409 12K R403 47K R450 0R R499 12K R445 0R R425 0R C511 100uF 16V L520 2500 L1 2500 C544 104P L404 FB600 C188 NC H2 H1 1 VINFC 2 TRB_1 3 REGO_2 4 VINSL 5 REGO_1 6 RED 7 REV 8 VCC1 9 VOTP 10 VOTR 11 VOSL 12 VOSL 13 VOFC 14 VOFC 28 MUTE 27 BIAS 26 VINTK 25 TRB_2 24 RESET 23 VINLD 22 G...

Page 42: ...9 2R2 R860 2R2 C842 104P C844 104P R863 6K8 C847 47P 100P R856 6K8 C849 47P 100P R855 6K8 R854 6K8 R864 6K8 R865 6K8 R868 68K R867 68K C851 47P C850 47P R853 15K R852 15K R869 15K R870 15K C875 100P C854 100P C861 22P C862 22P C864 22P C863 22P C857 330P C858 330P C856 330P C855 330P R850 10K R851 10K R871 10K R872 10K C649 103P R665 1K R674 10K C650 104P C656 104P R675 10K R676 10K R677 10K C663 ...

Page 43: ... C727 330P 2 R718 18R 2 R721 18R 2 C720 224 2 R710 2R2 2 C711 224 2 R706 2R2 2 C795 684S 2 C719 224 2 C714 224 2 C718 104 2 C713 104 2 C7G1 103 2 R705 3R3 2 C7G2 103 2 R713 3R3 2 C735 224 2 R720 2R2 2 C726 224 2 R717 2R2 2 C794 684S 2 C734 224 2 C729 224 2 C733 104 2 C728 104 2 C7G3 103 2 R716 3R3 2 C7G4 103 2 R722 3R3 2 R730 10R 3 C748 104P 2 1 GVDD_B 2 OTW 3 NC 4 NC 5 SD 6 PWM_A 7 RESET_AB 8 PWM...

Page 44: ...25V R250 100 C295 4 7uF 50V R205 10K C230 100 16 R28 100R C227 100 16 C229 104 R215 120K C208 103 R208 8K2 C36 390P R29 100 C37 47 16 FB201 FB600 R211 100 R216 120K C235 103 R217 8K2 R218 100 C233 47 16 C231 390P FB251 FB600 C38 10uF 25V C272 10uF 25V R31 100K R204 100K C1 472M C5 472M R219 1K R32 1K C299 10uF 25V C211 10uF 25V R40 47K R225 47K R41 1K R42 1K C259 392 C40 392 FB203 FB600 FB253 FB60...

Page 45: ...6 P5 27 P4 28 P3 29 P2 30 P1 31 15G 32 14G 33 13G 34 12G 35 11G 36 10G 37 9G 38 8G 39 7G 40 6G 41 5G 42 4G 43 3G 44 2G 45 1G 46 NP 47 NP 48 F 49 F VFD901 LG_MCT355_VFD A FB901 10uH R913 1K R914 1K C911 100P R915 100K R903 15R R904 100K R902 15R R901 15R C902 47U 16V C901 104 C903 104 R905 100K C905 47U 16V C904 104 D901 IN4001 D902 IN4001 C908 47P R907 330K R908 100R B A 1 3 2 VR901 R917 10K R916 ...

Page 46: ...2 13 2 2 11 3 1 92 4 2 33 5 5 05 6 1 66 7 1 69 8 3 27 9 0 86 10 3 27 11 3 27 12 5 05 13 3 45 PIN NO TEST VOLTAGE V 15 1 61 16 2 78 17 2 03 18 2 21 19 5 05 20 1 65 21 1 75 22 GND 23 1 66 24 0 92 25 3 26 26 3 21 27 3 36 28 3 46 29 GND 30 GND IC501 LM1117 1V5 1 GND 2 1 48 3 3 28 IC502 IC M12L128168A 6T 1 3 28 3 3 28 9 3 28 14 3 28 27 3 28 43 3 28 49 3 28 IC503 W25Q16 8 3 29 IC504 FT24C021CS 8 3 29 IC...

Page 47: ...1 0 PIN NO TEST VOLTAGE V 3 0 01 4 0 38 5 GND 6 6 51 7 0 01 8 GND 9 0 01 U203_BA3308 1 1 58 2 6 30mV 3 1 56 4 GND 5 3 25 6 7 12 7 1 56 8 6 30mV 9 1 58 U901_PT6324 1 4 77 2 4 14 3 4 37 4 1 14 5 0 6 0 7 2 81 8 GND 9 4 91 10 17 7 11 21 3 12 23 13 23 14 17 6 15 21 9 16 21 6 17 24 7 18 23 19 24 7 20 19 5 21 23 22 23 23 24 7 24 26 7 25 26 7 26 17 6 PIN NO TEST VOLTAGE V 28 NC 29 NC 30 NC 31 NC 32 NC 33 ...

Page 48: ...3 45 3 46 PRINTED CIRCUIT BOARD DIAGRAMS 1 MAIN P C BOARD TOP VIEW ...

Page 49: ...3 47 3 48 MAIN P C BOARD BOTTOM VIEW ...

Page 50: ...3 49 3 50 2 SMPS P C BOARD NOTE Warning Parts that are critical with respect to risk of fire or electrical shock ...

Page 51: ...3 FRONT P C BOARD 3 51 3 52 ...

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