Toshiba SD-420 Service manual

SERVICE MANUAL

DVD VIDEO PLAYER

FILE NO. 810-200216

SD-420EB

SD-420EE

JULY, 2002

3-12

BLOCK DIAGRAMS

1. Overall Block Diagram

M

DISC

SPINDLE

MOTOR

LOAD ING

MOTOR

DECK M ECHANI SM

CD: A,B, E, F

DVD: A,B,C,D,

DVD; RF

PICK

UP

IC 203

SDRAM

16bit

16M

IC201

HDC25D811

CD / DVD DSP

IC501

PANTERA

LE / PLUS

IC901

GMS1C2012

FROM

FL DI SPLA Y

KEY I nput

REMOCON

RECEI VER

6MHz

X-TA L

Pb

IC301

XC9572VL

CPLD

I/O PORT 72

IC304

SDRAM

16/32BIT

64M

IC502

93C56

EEPROM

IC2M 1

KA 3032

MOTOR

DRIVER

IC2A1

Hd153702TF

RF

ICDATA

[00:15]

ICADD

[0:8]

LOADING

FOCUS,TRACKING,SLED

SPINDLE

MIRR,TZC,PI,TE FE,DFECT_IN

RFO

SCLK,S DATA

;

SCOR,SQCK,SQSO

XLAT , E_STI , E_ENB , E_DR

RF_XLAT , LDO N

IC401/451

CS4391

PCM1603KY

XIO1,XIO

,XIO10

/SRST

F_CLK

F_OUT

PCMCLK

ALE

SPINDLE_FG

MSDATO

MDP1

FOK

DEFECT

DSP_SENSE

LOCK

E_SOUT

ZISENB

/XRST

DAC_RST

16

:9, PAL_SW , AUTO_SW , MIC_ON

Y_SEL

/A_MUTE

/DAC_CS1

/DAC_CS2

V_MUTE

DAC_CLK

DAC_OUT

ADCCLK

ACT_MUTE , LOAD_OPEN , LOAD_CLOSE

MIRR

AD[04:21]

PSENB

FLD

/FLD_CS

FLD_CLK

FLD_OUT

/FLD_CS

FLD_CLK

FLD_OUT

CPLD

EE_CS , EE_CLK , EE _OUT

F_IN

IC 3F1

FLA SH

ROM

F_IN

/MRESET

/FLASH_CS , /RD

PWEO

LA0

LA1

LA2

LA3

LADD

[04:19]

MD[00:31]

MCLK2

CKE

MA[00:10]

MA12,13

/CS0

/RAS

/CAS

/WE

DQM0‘3

REQP

SDCLKI , PSYNC

DVD[1:7]

DSP_INT

SENSE

/DSP_CS

F_IN

DA_AIN

SPDIF

ACLK

LRCK

AOUT0~3

AM P

L/R

RR

RL

Composite

FIL TER

Y

Pr

SW602

S.OUT / COMP.OUT

SWICHI NG

FR

FL

WOOFER

CENTER

VIDEO SW

CVBS/Pr/R , C/Pb/ , Y/G

CVBS

Y

C

L/R

RR

RL

FR

FL

WOOFER

CENTER

-VF

AC 240V,

60Hz

POWER

BOARD

-VF

-24VA

+8V

+5.2VA

+5V_D

+5V_A

+12VA

+3.3V_M1

AD[0:7]

LADD4~5 , LA0~3

AD[00:15]

MDP,FDO,TDO,FMO,MON

OPEN_SW

CLOSE_SW

LIM IT_SW

CPLD

SBADD ,

27MHz

X-TAL

33.8688MHz

X-T AL

+3.3V/3.3V_M

POWER_CTL

MIC

IC 206

INVE R

TER

DV5000’s

3-13

2. Power(SMPS) Block Diagram

5V_D

5V_A

-29VA

F+

RECTIFIER

LINE FIL TER

SWITCHING TR

TRANS

FEED B.

REG(8V)

8V

5.2VA

F-

RECTIFIER(FLD )

RECTIFIER(9V)

RECTIFIER(5.2V)

LPF

RECTIFIER(14V)

LPF

12VA

AC90~240V

PWR ON/OFF

REG(3.3V)

3.3V_M1

3.3V/3.3V_M

DV5000’s

3-14

8

SENS, FOK, SLD_FG,

MSDAT0, DEFECT,DSP_SENSE

IC2M1

KA3082

SpindleMotor, LoadingMotor,

Actuator Driver

CD: A,B,C,D / E, F

4

MIRR,TZC

8

5

3

SQSO, SQCK ,

SCOR

6

XL AT , S_CL K , S_DATA

UCOM

I/F

focu

s, track

ing, l

oa

di ng,

sled

Spi ndle

M/D

PICK

UP

MCK

IC206

HDC25D811

CD / DVD DSP

DVD SERVO

IC2A1

HD153702TF

RF Signal

Process or

FDO,TDO,FMO

Load open/cl ose(loadi ng control)

UCOM

I/F

DVD: A,B,C,D,

FE,TE,PI,SBADD

4

DVD/CD RF

IC203

1M x 16bit

SDRAM

16

9

ICADDR[ 0:8]

ICDAT A[ 00:15]

DO[0:7]

AO[0 :5]

DVD_DATA [0: 7]

MON,MDP

SPINDLE_FG

MPEG

I/F

2

DSP_CS, /WR, /RD

3

8

DV5000’s

3. RF/CD DSP/DVD DSP/DVD SERVO Block Diagram

3-15

4. Audio Block Diagram

IC401

CS4391

Aud

i

o DAC

IC402

LPF & Bu ff

er

Buff

er

Buff

er

Buff

er

K

A

5532

OP AMP

DAC_RST

S_DATA

S_CLK

DAC_L 0

DA_L RCK

DA_DAT A0

DA_BCK

DA_X CK

FL

FR

RL

RR

WOOFER

CENTER

L

R

U-COM

I/F

IC452

LPF &

KA 5532

OP AMP

IC453

LPF &

KA 5532

OP AMP

IC454

LPF &

KA 5532

OP AMP

IC451

PCM1603K Y

Aud io DAC

(5.1CH)

FL

FR

RL

RR

WOOFER

CENTER

L+

L-

R+

R-

A/V

JACK

I/F

DAC_RST

S_DATA

S_CLK

DAC_L 1

DA_L RCK

DA_DAT A[1: 3]

DA_BCK

DA_X CK

MPEG

I/F

MPEG

I/F

U-COM

I/F

DV5000’s

3-16

5. MPEG & MEMORY Block Diagram

IC501

PANTERA-2

LE/PLUS

IC301

XC9572VL

CPLD

I/O PORT 72

IC304

SDRAM

16/32BIT

64M

IC502

93C46

EEPROM

IC3F1

FL A SH

MEMORY

AD[0 :7]

8

DSP

I/F

DVD[0 :7]

8

LA [0:3]

4

SCLK,SDATA

SQCK,SQS0

REQP

SDCL K1,PSYNC

DSP_INT

SENSE

/DSP_CS

AD[04:21]

RF &

MOTOR

I/F

MIRR

LDON

SCLK ,SDAT A

EE_CS

F_IN

32

MD[ 00: 31]

MCLK2

CKE

MA [ 00:10]

MA 12,13

/CS0

/RAS/

/CAS

/WE

/DQM[0:3]

SPINDLE_FG

ALE

AD[ 04:19]

16

LADD[04 :19]

16

LA [0:3]

4

AD[ 00:15]

16

AUDIO

I/F

DA_DAT A[0:3}

DA_BCK ,DA_LRCK,DA_XCK

4

DAC_L 0,DAC_L1

DAC_RST

A/V

JACK

I/F

C/R(B)

CVBS/G(R)

Y/B (G)

CVBS

V_MUTE,16:9

ZISENB

/RD

/PWED

IC301

DV5000’s

3-17 3-18

CIRCUIT DIAGRAM

1. POWER(SMPS) CIRCUIT DIAGRAM

IMPORTANT SAFETY NOTICE

WHEN SERVICING THIS CHASSIS, UNDER NO CIRCUMSTANCES SHOULD THE ORIGINAL DESIGN BE MODIFIED OR ALTERED WITHOUT PERMISSION FROM THE TOSHIBA ELECTRONICS CORPORATION. ALL COMPONENTS SHOULD BE REPLACED ONLY WITH TYPES IDENTICAL TO THOSE IN THE ORIGI-

NAL CIRCUIT. SPECIAL COMPONENTS ARE SHADED ON THE SCHEMATIC FOR EASY IDENTIFICATION.

THIS CIRCUIT DIAGRAM MAY OCCASIONALLY DIFFER FROM THE ACTUAL CIRCUIT USED. THIS WAY, IMPLEMENTATION OF THE LATEST SAFETY AND PERFORMANCE IMPROVEMENT CHANGES INTO THE SET IS NOT DELAYED UNTILTHE NEW SERVICE LITERATURE IS PRINTED.

NOTE :

1. Shaded( ) parts are critical for safety. Replace only with specified part number.

2. Voltages are DC-measured with a digital voltmeter during Play mode.

NOTES) Warning

NOTES) Parts that are shaded are critical NOTES) With respect to risk of fire or NOTES) electricial shock.

NOTES : Symbol denotes AC ground.

Symbol denotes DC chassis ground.

SD-3780/SD-420E