Toshiba SD-3990 Service manual

SERVICE MANUAL

DOCUMENT CREATED IN JAPAN, DECEMBER, 2005

DVD VIDEO PLAYER

FILE NO. 810-200592GRI

INTERNAL PUBLICATION

SD-3990SU
SD-3990SC

The above model is classified as a green products (*1), as indicated by the underlined serial numbers.
This

Service Manual describes replacement parts for green products. When repairing any green

products,

For

TOSHIBA CORPORATION 2005

use the parts described in this manual and lead-free solder (*2).

(*1) and (*2), see the next page.

Dec. 2005 (TO) GREEN

(*1) GREEN PRODUCT PROCUREMENT

The EC is actively promoting the WEEE & RoHS Directives that define standards for recycling
and reuse of Waste Electrical and Electronic Equipment and for the Restriction of the use of
certain Hazardous Substances. From July 1, 2006, the RoHS Directive will prohibit any
marketing of new products containing lead.

Increasing attention is given to issues related to the global environmental. Toshiba Corporation
recognizes environmental protection as a key management tasks, and is doing its utmost to
enhance and improve the quality and scope of its environmental activities. In line with this,
Toshiba proactively promotes Green Procurement, and seeks to purchase and use products,
parts and materials that have low environmental impacts.

Green procurement of parts is not only confined to manufacture. The same green parts used in
manufacture must also be used as replacement parts.

(*2) LEAD-FREE SOLDER

This product is manufactured using lead-free solder as a part of a movement within the CE
industry at large to be environmentally responsible. Lead-free solder must be used in the servicing
and repair of this product.
The melting temperature of lead-free solder is higher than that of leaded solder by 86°F to 104°F
(30°C to 40°C). Use of a soldering iron designed for lead-based solders to repair product made
with lead-free solder may result in damage to the component and or PCB being soldered. Great
care should be made to ensure high-quality soldering when servicing this product  especially
when soldering large components, through-hole pins, and on PCBs  as the level of heat
required to melt lead-free solder is high.

WARNING

This product is manufactured using lead free solder.

DO NOT USE LEAD BASED SOLDER TO REPAIR THIS PRODUCT !

CONTENTS

ˊ

ˊ

ˊ

ˊ

ˊ

ˊ

ˊ

1ˊPRINTEDWIRINGBOARD AND SCHEMATIC DIAGRAM

Printed Wiring Board and Schematic Diagram

BLOCK DIAGRAMS

2

SET Block Diagram

Power Supply Block Diagram

CIRCUITDIAGRAMS

3

Power Supply Circuit Diagram

(Terminal Voltage Lists)

Front Display Circuit Diagram

Main chip & SDRAM Circuit Diagram

Power & AV Output Circuit Diagram

FE & Driver Circuit Diagram

Flash & SRAM I/F Circuit Diagram

Audio Circuit Diagram

PC BOARDS

4

Power Supply PC Board(Top side)

Main PC Board(Top side)

Main PC Board(Bottom side)

Front Display PC Board(Top side)

Front PC Board(Bottom side)

IC BLOCK DIAGRAMS

5

PARTS LIST

6

EXPLODED VIEWS

7

SPECIFICATIONS

8

DVD MECHA

CON2

CON1

J3

24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1

GND-LD
DVD-LD
NC
HFM
MD
CD-LD
VR-DVD
VR-CD
NC
E
VCC
VC(VREF)
GND/PD
F
B
A
RF
CD/DVD SW
D
C
T­T+
F+
F-

24
23
22
21
20
19
18
17
16
15
14
13
12
11
10

9
8
7
6
5
4
3
2
1

CN201

1
2
3
4
5
6

5
4
3
2
1

SLED+9
SLED­HOME SW
GND
SP+
SP­LOAD+
LOAD­OUT SW
GND
IN SW

1A
2A
3A
4A
5A
6A
7A
8A

9A
10A
11A

CN203A

AUDIO/VIDEO OUTPUT

JR502B

MPEG BORAD

J1

1234567

STB

IR

VCC

DAT IN

CLK

GND

DATA OUT

CN504

AC IN

POWER UNIT

7
6
5
4
3
2
1

+5V
GND
+12V

-12V
5VSTB
GND
POWER ON

7
6
5
4
3
2
1

CN902

1234567

J1

FRONT PCB

Printed Wiring Board and Schematic Diagram

PICK UP
SAMSUNG
S75

CN201

MPEG BORAD

A
B
C
D
E
F
DVD LD

CD LD
TACT­TACT­FACT­FACT+

U101

ZORAN
ZR36882ELCG

ENCODER
DOBY AC-3 ,DTS

DECODER
VIDEO/AUDIO DAC

MPEG1,MPEG2,MPEG4,DIVX
DECODER

U302

AZ4558

AUDIO AMP

RAMDAT[15:0]
RAMADD[11:0]
PLCK
RAMCKE
RAMDQM
RAMWE-

Y_SVIDEO

C_SVIDEO

Y_RCA
CB_RCA
CR_RCA
CVBS

LMATN-OUT
RMATN-OUT

64M SD-RAM

DVD MECHA

SET Block Diagrams

SLED­SLED+
HOMESW
GND
SP+
SP­LOAD­LOAD+
IN SW
GND
OUT SW

CN203

POWER UNIT

OUTPUT:5V,STB5V,POWER
ON,-12V,+12V

POWER BORAD

U202

TRACK_S

FOCUS_S

A5888

5 CHUNNEL
MOTO DRIVE

5V
STB5V

POWER ON

SPINDLE_S

3.3V

1.8V

-12V
+12V

TO AUDIO AMP
4558

MEMADD[19:0]
MEMDAT[15:0]

RESET­MEMRD­MENWR-

FLASHCS-

U106

IR
5V
FP_DAT FP-CLK
FP_CLK
FP-STB
GND
DATA-OUT

IR
FP-DAT

FP-STB
5V

POWER
LED

U104

SST
39VF800A-7

FLASH MEMORY

ETK6201

LED DRIVE

U1

KEY1

KEY2

8 8 8 8

DISPLAY LED

REMOTE SENSOR

KEY5

KEY4

KEY3

FRONT PCB

KEY6

Power Supply Block Diagram

TRANS

D910-913,C901,C902,L901

T901

D906,C912

RECTIFIER
SMOOTHING

Q909,Q905

Power

ON/OFF control

ON/STB

RECTIFIER

SMOOTHING

AC 120V 50/60Hz

Q901

TNY267

CONTROL IC

RECTIFIER
SMOOTHING

D903,C905

PUOTO

CUOPLER

Q902 EL817B

RECTIFIER
SMOOTHING

D904,C907,C908

RECTIFIER
SMOOTHING

D905,C910

RECTIFIER
SMOOTHING

D907,C914

ERROR AMP

Q903 TL431

Q906

ON/OFF SW

Q907,Q908

ON/OFF SW

Q911

ON/OFF SW

VOLTAGE REDUCE

FILTER

ZD901,C909,R911

5VSTB

+5V

+12V

-12V

CIRCUIT DIAGRAMS

Power Supply Circuit Diagram

D907

FR104

T901

F901

F1AL/125V

1

2

RH901
10D-9

D910-D913

IN4007

C901

4.7UF/250V

L901

1mH

C902

33UF/250V

C903

D902

R901

2.2nF/1KV
R902

100R-1\4W

1N4007

Q901
TNY267

EN

D

BP

S S S

S

150K/1W

D903
FR104

R903

4.7uF/50V

C905

10K-1\4W

C904

0.1uF

EEL19

C917

2200PF

Q902 EL817B

D906

FR104

D905

FR104

D904
IN5822

C918
102P

R928

10 1/4W

C912

R923

0R

R921

47uF/50V

R924

10R 1/2W

C910

220uF/25V

C907

C914

10K

R914
10K

L902

10uH

47uF/50V

47uF/50V

C911

100uF/25V

C908

R916

R915

470uF/16V

C915

Q909

A9015

R910

1K

Q905

C9014

R912

10K

L903
10uH

L904

5.6uH/2A

1000uF/10V

R905

240R

R904

1K

Q907
S8050

10K

R917
10K

680R/1W

Q908
A9015

1K

R918
10K

R922

10K

R911

12V 500mW

ZD901

C909

100uF/25V

CN902

7

PWON

6

GND

5

Q906

S8050

R913

10K

Q911
C2655

R926

470R 1W

STB5V

4

-12V

3

+12V

2

GND

1

+5V

Q903
AZ431

R907

C906

0.1uF

240K

R908

R906

10K

10K

Terminal Voltage Lists

AC IN: 120V 60Hz UNIT : V

Q903 Q905 Q906

KGA

OFF 3.71 2.49

ON 3.73 2.49

PLAY 3.73 2.49

Q908 Q909

ECBECBECB

OFF 12.78 12.75 12.08 17.03 0.01 17.01 5.08 5.09 5.84

ON 12.88 12.84 12.16 17.12 17.08 16.1 5.08 5.09 5.83

PLAY 13.21 13.19 12.5 17.64 17.66 16.94 5.08 5.09 5.83

0 0 16.99
00
00

ECBECBECB

0.07 12.78 12.8 13.51 -26.5 -26.45 -25.76

0.01 0.73 12.78 12.84 13.6 -26.47 -27.15 -26.82

0.01 0.73 13.16 13.22 13.91 -27.91 -16.87 -27.56

Q911

Q907

JP1

VCC

DATAIN

CLK
STB

GND

DATA OUT

FRONT DISPLAY CIRCUIT DIAGRAM

R1

1

IR

2
3
4
5
6

VCC

7

100UF

+

TC2

LED1

R3

IR

0.1UF

C2

R2

100

51K

D1

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16 17

12

U1

ETK6201

OSC
DOUT
DIN
CLK
STB
K1
K2
K3
VDD
SG1
SG2

SG12

SG3

SG11

NC

SG10
SG4
SG5
SG6 SG7

GND

GR1
GR2

GND

GR3
GR4

GND

VDD

GR5
GR6

SG9
SG8

13

A

15

B

16

12

10
14
11

U2

2
6

5

7
3

9

8
1
4

C
D

E
F
G
DP4
D1D2
NC
NC
DIGIT.2
DIGIT3
DIGIT4
DIGIT.1
DID2-

VCC

U3

1
2

3

R7

22

0.1UF

C3

+

TC3

100UF

IR

0.1UF

C1

TC1

100UF

32
31
30
29
28
27
26
25
24
23
22
21
20
19
18

12

D2

+

VCC

LED4
LED3
LED2

12

D3

Q1

100

2N3904

O/C1

STOP4

FF

SKD2

PLAY5

SKU3

POWER6