A
B
C
D
E
F
G
H
1
2
3
4
5
6
MCX-C15/MCX-CA15
32
■
MCX-CA15 BLOCK DIAGRAM
MCX-CA15
Volume
&
Tone
Selecter
Digital AMP
CPU
IC201
Audio Sensing
Circuit
L.P.F.
Power
Circuit
CH1
CH2
IR Bus
uPD789022GB
LC75342
YDA-135
AV IN
(CAT-5)
AUDIO IN
Audio IN(2)
SPEAKER OUT
INPUT SENSE
Reset SW
Mode SW
Audio IN(1)
IR Data IN
Video IN
Sensing
Control
D-AMP Reset
Mode Select
DC IN
DC +12V
VIDEO OUT
AUDIO IN Detect
Audio Detect
AUDIO OUT
SUB WOOFER OUT
CONTROL IN/OUT
CONTROL OUT(MODE A/B)
CONTROL IN(MODE C)
STATUS LED
IR/CTRL
IR OUT(MODE A)
CONTROL IN(MODE C)
DC IN/OUT
Video OUT
IR OUT
LED Control
Power Control IN/OUT
MUTE Control
DC +12V IN/OUT
IR Carrier
Serial CLK, DATA
MUTE &
SLEEP Control
Relay Control
MUTE Control
PCB D-AMP (4)
PCB D-AMP (3)
PCB D-AMP (3)
PCB D-AMP (4)
PCB D-AMP (3)
PCB D-AMP (2)
PCB D-AMP (1)
PCB D-AMP (3)
PCB D-AMP (1)
IC202
IC304
2
1
3
44
19
14,17
9,22
5
1, 2
22
IC205
40,41
IC105
10,21
14,47
33
36
34
3,4
RY101
• See page 42
→
SCHEMATIC DIAGRAM
IC203
Q101, 102
Q103
L.P.F.
VR301
SW201
SW101