Schematic Diagram; Overall Block Diagram - Samsung MX-C730D Service Manual

7. Schematic Diagram
7-1 Overall Block Diagram
REC SIGNAL
TAPE ASS'Y
Ctrl
PWM_DATA
PWM_CLK
PS_SI
PT6324
VFD
VFD_CB PS_CS
VFD
LC87F5NC8A
VFD_CLK
DISPLAY
DRIVER VFD_DATA RL+
MICOM
RL-
M_STB
M_ACK
SIGNAL
M_RXD
USB M-RESET
CtrL+SIGNAL
JACK
MICOM- UPDATE
MPEG UPDATA
AUX
SIGNAL
JACK
ESS_P3
TUNER SIGNAL
MPEG
JACK
CtrL+SIGNAL
MIC SIGNAL
JACK
Ctrl
DATA
5 Tray
H/P Motor Ctrl
MECHA
DRAM IC
AM 5766
JACK
H/P SIGNAL
Samsung Electronics
SIGNAL
Y,Pb,Pr
SIGNAL
AUDIO
OPEN AMP POWER
CLOSE
S M P S
8082 8082
DTF DTF
PRE-AMP
4560
PWM_FL_L+
POWER
PWM_FL_L-
IRF4019
TBCK FL X 2
PS 9830
AMP
TWS PRE-AMP
4560 IRS2053
TSD0
PWM
FR
TSD1
TSD2 POWER
IRF4019
PWM_FR_R+
X 2
74LCX04
PWM_FR_R-
Ctrl
12.288 MHz
PRE-AMP
4560
This Document can not be used without Samsung's authorization.
 The Main Micom IC is LC87F5NC8A. It's same as last year. MPEG chip is ES8391SCD. It's 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.
MAIN POWER
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.
SPK FL
L SPK
SPK_FR
R SPK

Schematic Diagram

7-1