Toshiba D-R250SB, D-R255SF, D-R255SG Service Manual

FILE NO. 810-200559

SERVICE MANUAL

DVD RECORDER

D-R250SB
D-R255SF

D-R255SG

JUL. 2005 S

8-1

8. Block Diagram

4MB FLASH

AM290L323GB

(2Mx 16bit)

MPEG-2

A/V CODEC

Video

Decoder

64MB DDR-SDRAM

K4H561638F-TCB3

(16Mx 16bitx2wa)

RGB

CVBS/Y

mux

CVBS

RF

AV3

OSD
CVBS

NM1647

Front Micom

RF Tuner

NM1501

OSD_SEL

NJM 2267
(6dB AMP)

NM1623

MM1501

VPS/Sync

Detector

S-Video 1

Video 1

Component

OSD

SCART1 (TV)

SCART2 (EXT)

Audio

ADC

Audio

DAC

Tuner

EXT1

mux

BD3824

L/R

EXT2

EXT3

Front

NOM1647

Front Micom

BU4052

RF Tuner

mux

AV OUT (L/R)

SCART1 (TV)

SCART2 (EXT)

AVI (L/R)

AV2 (L/R)

(A/I)

AV1 (CVBS)
AV2 (CVBS)

RGB
V/C
CVBS

AV3 (L/R)

9. Wiring Diagram

9-1

Schematic Diagrams

11-2

11-1 S.M.P.S. (SMPS PCB)

Schematic Diagrams

11-3

11-2 Main Connector (DVD PCB)

Power

Video

Audio

Schematic Diagrams

11-4

11-3 DDR (DVD PCB)

Power

Schematic Diagrams

11-5

11-4 DV (DVD PCB)

Power

Schematic Diagrams

11-6

11-5 A/V Codec (DVD PCB)

Power

Audio

Schematic Diagrams

11-7

11-6 Audio In/Out (DVD PCB)

Power

Video

Audio

Schematic Diagrams

11-8

11-7 Video Decoder (DVD PCB)

Power

Video

Schematic Diagrams

11-9

11-8 I/O (Jack PCB)

AUDIO

VIDEO