Toshiba SD-4800 Bedienungsanleitung

DVD VIDEO/AUDIO PLAYER

SERVICE MANUAL

Aug., 2002

FILE NO. 813-200201

SD-4800

– SUMMARY ––

––

–

This service manual covers only the different points from the service manual, file no. 810-200210,

for model SD-3800 since SD-4800 is basically the same designing as SD-3800.

Please refer to the file no. 810-200210 for other information.

SUPPLEMENT

DIGITAL VIDEO

LASER BEAM CAUTION LABEL

When the power supply is being turned on, you may not remove this laser cautions label. If it removes, radiation of a laser

may be received.

PREPARATION OF SERVICING

Pickup Head consists of a laser diode that is very susceptible to external static electricity.

Although it operates properly after replacement, if it was subject to electrostatic discharge during replacement,

its life might be shortened. When replacing, use a conductive mat, soldering iron with ground wire, etc. to

protect the laser diode from damage by static electricity.

And also, the LSI and IC are same as above.

Ground conductive

wrist strap for body.

Soldering iron

with ground wire

or ceramic type

Conductive mat The ground resistance

between the ground line

and the ground is less than 10

1. PRINTED WIRING BOARD AND SCHEMATIC DIAGRAM

2. BLOCK DIAGRAMS

2-1. Overall Block Diagram

2-2. Output Block Diagram

CONTENTS

SECTION 3

SERVICING DIAGRAMS

SECTION 4

PARTS LIST

SAFETY PRECAUTION

NOTICE

ABBREVIATIONS

1. Integrated Circuit (IC)

2. Capacitor (Cap)

3. Resistor (Res)

4. EXPLODED VIEWS

4-1. Chassis Assembly (Type A)

4-2. Chassis Assembly (Type B)

5. PARTS LIST

3. Circuit Diagram

3-1. Output Circuit Diagram

4. PC Board

4-1. Output PC Board

VCC+9V

GND

VEE-9V

GND

VDD+5V

VCC+9V

GND

VEE-9V

GND

VDD+5V

RGBON

SOUTX

ASP1

ASP2

IPXO

IPXI

GND

CV-INPUT

VGND

Y-INPUT

VGND

C-INPUT

VGND

Y(I/P)-INPUT

VGND

Cb(I/P)-INPUT

VGND

Cr(I/P)-INPUT

VGND

RGBON

SOUTX

ASP1

ASP2

IPXO

IPXI

GND

CV-OUTPUT

VGND

Y-OUTPUT

VGND

C-OUTPUT

VGND

Y(I/P)-OUTPUT

VGND

Cb(I/P)-OUTPUT

VGND

Cr(I/P)-OUTPUT

VGND

GND

LDMP

TOPN

LDMN

TCLS

LEFT

COMMON(GND)

DOWN

ENTER

RIGHT

GND

TXD

CTS

RXD

RTS

FMN

FMP

GND

LMT

DMN

DMP

VCC

DMFG

PWON

E+5V

VDD+5V

VDD+3.3V

VDD+2.5V

GND

M+8V

MGND

VKK-34V

F-

F+

PWON

E+5V

VDD+5V

VDD+3.3V

VDD+2.5V

GND

M+8V

MGND

VKK-34V

F-

F+

GND

EVER+5V

POWER LED

POWER KEY

Press-fit

12P

Press-fit

FFC 1.25mm 6P W502

FFC 1mm 8P W503

FFC 2mm 4P

W102

FFC 1mm 19P

W302

CNY02

Board-in

CN802

PUH

TRAY

MOTOR

CN502

CN503

CN 01

CN101

CN603

CN103 CN102

CN801

Board-in

CNX01

CN302

CN104

CN601

EU05 OUTPUT

EU02

POWER

EU04 POWER-SW

EU03 FRONT

EU01 MAIN

Mechanism

RSTOX

PWRCNT

E+5V

HMUTE

DSPRST

DSPSIO_D-M

DSPSIO_M-D

DSPCKX

DSTBX

GND

VKK-34V

F+

F-

RSTOX

PWRCNT

E+5V

HMUTE

DSPRST

DSPSIO_D-M

DSPSIO_M-D

DSPCKX

DSTBX

GND

VKK-34V

F+

F-

FFC 1mm 13P

W603

VCC

LD2

MON2

VOR2

GND

VREF

VCC

F+

T-

T+

F-

VCC

GND

MON

VOR

W501

FFC 1mm 23P

CN501

IED958IN

GND

HMUTE

POWER ON

FL OUTPUT

GND

FR OUTPUT

SL OUTPUT

GND

SR OUTPUT

C OUTPUT

GND

SW OUTPUT

HMUTES

HMUTE CSW

IED958OUT

GND

HMUTE

POWER ON

FL OUTPUT

GND

FR OUTPUT

SL OUTPUT

GND

SR OUTPUT

C OUTPUT

GND

SW OUTPUT

HMUTES

HMUTE CSW

FFC 1mm 15P

W901

CNY01

CN901

1. PRINTED WIRING BOARD AND SCHEMATIC DIAGRAM

Fig. 3-1-1

PUH

Display-CPU

Display

(FL)

Feed

Motor

Tray

Motor

PUH Driver

Motor Driver

1M-DRAM

Decryption,

Video Process,MPEG-2 Decoder

Dolby-Digital Decoder, OSD

MAIN CPU

64M-S-DRAM

1chip-SERVO

Data Processor

SPM

VIDEO LPF

with

AMPLIFIRE

Composite

Video Out

S Video Out

Y,CB,CR

Video

Out

Coaxial

Digital

TOS Link Digital

Audio Out

22.5 92

MHz

E2PROM

RF Amp.

Data/Control Bus

DVD AV Data

SP DIF Data

Buffer

LPF &

Amplifier

Audio Out

FL, FR Analog

Audio Out

SL, SR Analog

Audio Out

Center SW

Analog

Audio Out

2ch Analog

Audio Out

SW POWER SUPPLY

FRONT DISPLAY UNIT

MAIN PROCESSOR UNIT AUDIO/VIDEO OUTPUT UNIT

IC502

TA1323F

X501

Xtal

2 MHz

IC503

BA5813FM

IC30

S24C02BFJ

E2PROM

IC308

S24C02BFJ

IC402

M11B11664A-30T

IC401

TC94A03F

IC101

TMP8 CH 5F-3D68

IC305

MT48LC2M32B2

32M-FRAM

IC309

MBM29DV324BE

IC902

AD1958

IC903

PCM1 42KE

IC904

PCM1 42KE

IC306

ZR36 50

ICY02

TC 4HCU04A

ICY01

NJM4580E

LPF &

Amplifier

Audio Out

ICY06

NJM4580E

LPF &

Amplifier

Audio Out

ICY05

NJM4580E

ICX01

MM1568

PLL+DAC

Audio-DAC

Fig.3-2-1

2. BLOCK DIAGRAMS

2-1. Overall Block Diagram

Lch OUT

Front

JY01

Rch OUT

DIGITAL OUT

(COAXIAL)

DIGITAL AUDIO

SIGNAL

Lch SIGNAL

Rch SIGNAL

SURROUND L

SURROUND R

L ch

R ch

Center

2 1

ICY01

NJM4580E

ICY02

TC 4HCU04AF

ICY06

NJM4580E

ICY05

NJM4580E

QY08

HN-IC03F

QY11

HN-IC03F

ICY04

TOTX1 9

QY02

HN-1C03F

QY03

QY04

MUTE

CONTROL

13 2

CNY01

FL OUTPUT

FR OUTPUT

33 H MUTE F

IEC958 OUT

88 SL OUTPUT

1010 SR OUTPUT

ICX01

MM1568AJBE

VIDEO DRIVER

VOUT 31

COUT 33

YOUT 28

CYOUT 20

CBOUT 22

CROUT

CIN

VIN

YIN1

CBIN

CRIN

JX02

JX01

COMPOSITE

VIDEO

COMPOSITE

VIDEO SIGNAL

C SIGNAL

CR SIGNAL

CB SIGNAL

SIGNAL

Y SIGNAL

S TERMINAL

CNX01

12 C-IN/OUTPUT

Y-IN/OUTPUT

Cb(I/P)-IN/OUTPUT

Cr(I/P)-IN/OUTPUT

To MAIN

EU01

MAIN

VIDEO

AUDIO

To MAIN

2 1

QY10

QY12

MUTE

CONTROL

2 1

QY0

QY09

MUTE

CONTROL

1111 C OUTPUT

1313 SW OUTPUT

1414 H MUTE S

1515 H MUTE CSW

2-2. Output Block Diagram

Fig. 3-2-2

3. CIRCUIT DIAGRAM

3-1. Output Circuit Diagram

Fig. 3-3-1

3. CIRCUIT DIAGRAM

3-1. Output Circuit Diagram

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