Samsung Electronics 7-1

Schematic Diagram

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7.SchematicDiagram7-1 OverallBlockDiagram

FL

FR

USBJACK

AUXJACK

ESS_P3MPEG

LC87F5NC8AMICOM

VFDDISPLAY

H/PJACK

MICJACK

TUNERJACK

PT6324VFD

DRIVER

MICOM- UPDATEMPEG UPDATA

TAPE ASS'Y

SIGNAL

SIGNAL

SIGNAL

CtrL+SIGNAL

SIGNAL

Ctrl

VFD_CBVFD_CLKVFD_DATA

PS 9830

PWMR SPK

H/P SIGNAL

M_STBM_ACKM_RXDM-RESET

PRE-AMP4560

AUDIO

AMPIRS2053

PRE-AMP4560

PRE-AMP4560

Y,Pb,Pr

REC SIGNAL

POWERIRF4019

X 2

POWERIRF4019

X 2L SPK

12.288 MHz

S M P S

AMP POWER MAIN POWER

+5V 5V PVDD

+PVDD

5.6V(MICOM)5.6V(p_sense)

12V(MOTOR)

+VFD

12V(TAPE)

VFDVFD

VP

PON(5V)

74LCX04

PWM_FL_L+PWM_FL_L-

PWM_FR_R-PWM_FR_R+

TSD0TSD1TSD2

SPK FL

SPK_FR

SIGNAL

SIGNAL

Ctrl

TBCKTWS

PS_SIPS_CS

PWM_DATAPWM_CLK

5 TrayMECHAAM 5766DRAM IC

8082DTF

8082DTF

OPENCLOSERL+

RL-

TM+(OP)

TM-(CL)

CM-(DW

)CM

+(UP)

Ctrl

DATA

CtrL+SIGNAL

Ctrl

Motor Ctrl

The Main Micom IC is LC87F5NC8A. Its same as last year. MPEG chip is ES8391SCD. Its upgrade version of ES8390SCD.

The Main Micom control every IC in this PCB.

Video signal is come from DVD mecha and go to the MPEG IC. Then MPEG IC decode this signal to real video signal.

Audio signal is come from DVD mecha, TUNER, AUX, MIC. Then MPEG IC decode to digital I2S signal. This signal goto the PS9830(PWM modulator) to convert PWM signal. PWM signal amplified at IR AMP stage and then Low Pass Filtered. This signal is real audio signal.

7-2 Samsung Electronics

Schematic Diagram

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7-2 FRONT

POWER

AUDIO

Samsung Electronics 7-3

Schematic Diagram

This Document can not be used without Samsungs authorization.

7-3 MAIN_MICOM

POWER

AUDIO

TP1

TP1

7-4 Samsung Electronics

Schematic Diagram

This Document can not be used without Samsungs authorization.

7-4 MAIN_MPEG

POWER

AUDIO

VIDEO

Samsung Electronics 7-5

Schematic Diagram

This Document can not be used without Samsungs authorization.

7-5 MAIN_PWM

POWER

AUDIO

Leo SanzehLeo Sanzeh

7-6 Samsung Electronics

Schematic Diagram

This Document can not be used without Samsungs authorization.

7-6 MAIN_AMP

POWER

AUDIO

TP2

TP2

Samsung Electronics 7-7

Schematic Diagram

This Document can not be used without Samsungs authorization.

7-7 SMPS

2

8

3

74,5

1

6

EER4042VEER4215V

EER-2525V

2.9uH

L1

2.9uH (0.8)L3

2.9uH (0.8)L2

2 3

8D

56

1S

7

4G

Leo SanzehLeo Sanzeh

7-8 Samsung Electronics

MEMO

7.Schematic Diagram7-1Overall Block Diagram7-2FRONT7-3MAIN_MICOM7-4MAIN_MPEG7-5MAIN_PWM7-6MAIN_AMP7-7SMPS