Overall Block Diagram; Overall Block Diagram - Samsung MM-DA25 Service Manual

Schematic Diagram
7-1 Overall Block Diagram
 A24/A25 Block Diagram
TUNER-L
TUNER
PACK TUNER-R
ANT
TAPE-L
TAPE
DECK
TAPE-R
CD-L
CD/MP3/WMA
DECK
CD-R
AUX-L
AUX-L
MCW12
SMPS
AC CORD
 DA25 Block Diagram
TUNER-L
TUNER
PACK
TUNER-R
ANT
TAPE-L
TAPE
DECK
TAPE-R
CD-L
CD/MP3/WMA
DECK
CD-R
AUX-L
AUX-L
VP
VFD+
VFD-
CD-ON
P-SENSE
SMPS
5.6V
P-ON
AC CORD
GND
12V
VCC-
VCC-
GND
GND
VCC+
AGND A10V EGND EGND 3.3V 5.0V MGND M8V VCC+
PCW13
(MAIN)
7-2
VFD CONTROL
UIC2
FRONT PCB
VFD
PT6315
CE CLK DATA
SPK-L
L-CH
FIC1
AAIC1
FUNCTION IC
AMPLIFER IC
SPK-R
R2S15904 TDA8922BJ
R-CH
HEAD
PHONE
VP
VFD+
VFD-
CD-ON
P-SENSE CE CLK DATA
5.6V
P-ON
GND
12V
MICOM IC
VCC-
VCC- HIC2
GND
4556
GND
VCC+
VCC+
VFD CONTROL
UIC2
FRONT PCB
VFD
PT6315
CE CLK DATA
MIC
SPK-L
MIC SIGNAL
FIC1
AAIC1
FUNCTION IC
FIC2 AMPLIFER IC
L-CH SPK-R
R2S15904
4558 TDA8922BJ
R-CH
HEAD
PHONE
CE CLK DATA
MICOM IC
HIC2
4556
This Document can not be used without Samsung's authorization.
 Main System MICOM control Function IC (R2S15904), Tuner pack, Tape deck IC (HA12237F), CD/DVD DECK.
It gets all information from R2S15904. They have a communication among them with the HOST ↔ SLAVE interface.
And Main System MICOM gets the information from User's remote control. So whenever it gets the information, it
displays it on the VFD.
 PCW3 on MAIN PCB gets power from SMPS;
 PCN1A on DVD PCB gets power from SMPS;
 The CD Deck, Tape Deck, AUX Jack and Tuner Pack GND are each connected to Function IC (R2s15904).
Then GND after processing. The Data will be sent to AMP IC VCC+ (AAIC1).
 Headphone IC (4556) gets signal from Function and output it to H/P JACK.
Samsung Electronics