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HCD-EC70
6-3. BLOCK DIAGRAM — MAIN SECTION —
J105
R-CH
AUDIO IN
+9V
+9V
L-CH
R-CH
R-CH
B
TU-DO
TU-DI
TUNER
TU-CLK
SECTION
TU-CE
(Page 23)
TU-ANSD
TAPE MECHANISM DECK
BLOCK
SW501(1/2)
(REC/PB)
L-CH
REC/PB
HEAD
SW501(2/2)
(REC/PB)
R-CH
R-CH
L501
BIAS OSC
BIAS
OSC
Q507
P-SW
VM9V
M
M-SW
A
CD-L
CD-R
R-CH
BD/DRIVER
SECTION
(Page 22)
HCD-EC70
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HP MUTE
PB/REC EQ AMP
IC401
Q133,134,141
19
A1
OUT 1
18
SYSTEM CONTROLLER
OUT 2
16
R-CH
21
B1
IC701(2/2)
PB1P
2
SD
4
13
P27
23
C1
REC 10
28
33
P57/SI1
57
V2/P82
56
V1/P81
55
V0/P80
39
P63/AN3
14
X1A
P65/AN5/INT0
X701
32.768kHz
13
X0A
93
X0
X702
4.19MHz
92
X1
40
P64/AN4
P66/AN6/INT1
SW700
VOLUME
48
P73/AN11/SI2
VOLUME
manuals search engine
IC301
POWER
11
4,5
AMP
(HIGH)
13
FILTER
Q303
Q305,306
Q251
HIGH MUTE
LOW MUTE
MUTE
CONTROL
CONTROL
P25
2
LCD702
LIQUID CRYSTAL
DISPLAY
63
.
64
.
Q361
67
SEG0
AMP
89
SEG31
.
CONTROL
94
100
59
COM0
COM3
62
SW702-704, SW706,709,710,719,721
FUCTION
P61/AN1
37
KEY
SW711-716, SW708,720
FUCTION
P62/AN2
38
KEY
SW701,705
Q203,207
FUCTION
THERMAL
41
KEY
DETECTION
LED702
STANDBY
P40/LED0
17
LED701
(BACK RIGHT)
Q707
TH361
LED
P71/AN9/SC1
46
DRIVE
IC703
REMOTE
P34/IC0
9
CONTROL
1
3
RECEIVER
D702
+3.6V
µCON +B
42
Q705,706
Q704
RESET
54
RESET
RSTX
SWITCH
P60/ANO
36
P24
1
+3.6V
24
24
Q131,137
HP
AMP
R-CH
Q135
R-CH
RELAY
RY131
CONTROL
Q301
OVERLOAD
DET
IC201
POWER
3
AMP
(LOW)
R-CH
Q201
2
OVERLOAD
DET
Q367
AMP
PROTECT
RY201
Q366
THERMAL
DET
Q901,902
FAN
M
+9V
FAN MOTOR
CONTROL
Q921
CURRENT
DET
D154
Q151-154
PROTECT
DET
PT001
D156
POWER
TRANSFORMER
(MAIN)
Q192
D101
+3.3V
AVDD
REG
( +3.3V)
+VP
Q191
-VP
DVDD
+3.3V
( +3.3V)
REG
D111,113
+7V
IC101
+9V
+9V
3
1
REG
Q121,122
POWER
MONITOR
Q102
RY001
RELAY
DRIVE
PT002
POWER
TRANSFORMER
(SUB)
Q701-703
+3.6V
REG
D051,052
J102
PHONES
L
J101
SPEAKER
HIGH FREQ.
IMPEDANCE:
USE 8
R
L
J201
SPEAKER
LOW FREQ.
IMPEDANCE:
USE 8
R
M901
• R-CH is omitted due to same as L-CH.
• Signal Path
: TUNER(FM)
: TUNER(AM)
: CD
: AUX
: PB (TAPE)
: REC (TAPE)
L001
LINE
AC
FILTER
IN
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