Service manual

– 15 –
CD-C405W/CD-C420H/CP-C410/CP-C405/CP-SR421
Figure 15 BLOCK DIAGRAM (3/3)
13
4
3
11
MUTE
L
R
R
L-OUT
R-OUT
9
2
5
12
R-IN
L-IN
7
VCC
14
NF
8
+12V (ANALOG)
+B4
+12V (MOTOR)
+B5
OUT
IC801
LA4551
POWER AMP.
+B4
PRESET GRAPHIC EQUALIZER
VDD
X-BASS
LVREF
RVREF VSS
AVSS
GRAPHIC EQUALIZER
VOLUME
58
55
L
R
R
R
L
L
L
TAPE
VIDEO/AUX
TUNER
CD
Q942
VOLTAGE
REGULATOR
VOLTAGE
REGULATOR
VOLTAGE
REGULATOR
UN-SWITCHED
+B1
+
–
SO801
FRONT SPEAKER
TERMINAL
CD-C420H
ONLY
J801
HEADPHONES
VREF
TO CD SECTION
+5.6V
+5.6V
+B1
Q941
Q943
Q952
Q953
IC401
LC75394E
AUDIO PROCESSOR
23
16
33
17
32
19
30
21
28
14 35 56 50 26 27 12 37 11 38 10 3963
24 25 57
CL
DI
CE
25
27
29
30
33
34
35
36
37
38
39
40
42
41434445464748495051 4352535455565859
60
65
70
57
2423222120191817
80
72
71
161514131211
10
9
~
6
1
~
~
~
7
8
1
RX701
3
2
SYSTEM STOP
DO
DRF
DI
DE
CL
RESET
XL702
4.19MHz
AVDD
AVREF
VDD
+B2
KEY
SW701
SW725
TO POWER SECTION
+B5
PHM1
RESET
Q708
Q709
ZD701
MEMORY
BACK UP
+B2
3
2
1~
3330 31 32
Q701
+B2
+B1
UNSWITCH
FL701
DISPLAY
~
61
64
~
POWER
T.F
220V
127V
110V
SW961
VOLTAGE
SELECTOR
230-240V
AC POWER
SUPPLY CORD
405W:AC 110/127/
220/230-240V
50/60Hz
420H:AC 230V
50Hz
VOLTAGE
REGULATOR
Q971
D971
D973
~
D961 ~ D964
ZD972
Q707
IC701
IX0191AW
SYSTEM CONTROL
MICROCOMPUTER
TO CD SECTION
TO CD SECTION
TO CD SECTION
TO CD SECTION
+
–
–
+
SO802
REAR SPEAKER
TERMINAL
D965 ~ D968
9
43
6
40
49
64
8
44
5
41
7
45
4
42
CD PUIN
CD SL+
CD SL–
VDD
TAPE SOL
TAPE MOTOR
TAPE MECHASTOP
TAPE FP
T1 RUN PLSE
SWM5
CAM
SWM4
F. A. S
SWM3
FOOL PROOF
L-CH INPUT
R-CH INPUT
T2 RRUN PLSE CD UP DOWN/DISC NO
CD DSP RES
CD T/T OPEN/CLOSE
RESET CD DSP SQOUT CD DSP COIN CD DSP RWC
CD DSP CQCK
CD DSP WRQ T1/T2 TAPE REC TAPE BIAS
14
15
ST FM
Q354
MUTING
+B6
L-CH
R-CH
MONO/ST
Q353
SO401
F962
T2.5A
L 250V
T1.6A
L 250V
F963
CD-C405W
ONLY
CD-C420H
ONLY