Service manual

CD-MPX870
4 – 2
[2] Main Block diagrams
Figure 4-1: BLOCK DIAGRAM (1/3)
IC101
AN7345K
PLAYBACK AND RECORD/
PLAYBACK AMP.
AUX
VIDEO
VIDEO
IN
JK691
VIDEO
OUT
R
L
L
R
JK690
VIDEO/GAME
INPUT
Q104
Q101-
Q108
Q107
REC/PLAY
CLK
CE
DI
+B4
L
R
BIAS
T1/T2
MUTING
P.B.
REC.
AC BIAS
L
L
R
R
R
L
TAPE
TUNER
CD
P.B.
CNP3
FROM CD SECTION
HEAD
ERASE
SWITCHING
SWITCHING
SWITCHING
BIAS
Q113
Q114
Q112
Q110
SWITCHING
Q109
OSC
BIAS
Q111
L103
Q105
Q106
REC./P.B. HEAD
TAPE 2
P.B. HEAD
TAPE 1
R-CH
L-CH
IC601
LC75341
AUDIO
PROCESSOR
TUNER
PACK
UNIT
RTUNSA007AWZZ
+B4
R
L
REC.
R
L
L NF
R NF
ALC
R REC.
L REC.
R NF
L NF
SWITCHING
L(T2)
R(T2)
R(T1)
L(T1)
4
22
3
24
2
1
81817
11
16
3
15
10
9
7
23
14
12
13
19
7
18
10
8
1 7
13
21
4
2
24
23
9
16
12
1
P.B
REC
T1/T2
21
R-CH
L-CH
TAPE
MECHANISM
ASS'Y
MOTOR
DRIVER
SOLENOID
DRIVER
+B7
+B7
BI601CNS601
1
1
2
3
4
5
6
7
8
9
10
11
3
4
1
3
2
Q703~
Q708
Q709~
Q711
+B4
NC
NO USE
CNP303
CE
DI
CL
DO
CHASIS_GND
L_CH
+9V
R_CH
TUN_SM
FM_DET
CHASIS_GND