HCD-J300
43
43
BLOCK DIAGRAM – MAIN SECTION –
: FM
: CD
• Signal Path
• R-CH is omitted due to same as L-CH.
: PB
: REC
: MD(PLAY)
: MD(REC)
COM8V
TU 1
TUNER UNIT
MD-L
REC-L
IC301
SOUND PROCESSOR
L-CH
R-CH
CK
DO
DI
CE
TUNED
FM-DET
FM (7.5V)
+B (9.5V)
R-CH
PJ301
L
ANALOG
IN
IC101
POWER AMP
9
IC306 (3/3)
MASTER CONTROL
Q101
MUTING
Q132
MUTING
Q407
MUTING
Q414
D401
MUTING
R
SPEAKER
10
MUTING
SWITCH
Q330,331
Q902
RELAY
DRIVER
R-CH
SJ301
SWITCH
Q315,316
SWITCH
RESET
SWITCH
Q319
IC302
HEADPHONE AMP
L
R
R-CH
J301
PHONES
BIAS
OSC
Q401
T401
REC BIAS
ERASE HEAD
ERASE BIAS
+8V
Q402,403
X
IC401
PB AMP,REC AMP,ALC
+
D906-909
D902-905
B+
SWITCH
Q309-311
+10V
REG
CD +5V
B+
SWITCH
Q303,307,308
TU 9.5V
TU 9.5V
B+
SWITCH
Q304-306
FM 7.5V
FM 7.5V
IC305
MD 3.3V
MD A3.3V
MD BACKUP
COM8V
D318
D303
T902
MAIN
TRANSFORMER
T901
SUB
TRANSFORMER
M +7V
IC313
IC314
+B
(+22.5V)
-B
(-22.5V)
IC303
AC IN
B/UP 5V
R-CH
5V (IC306,Q319)
IC316
13
14
IC309
RDS DECODER
P.DOWN
DA MUTE
MD RESET
D910-13
CD8V
IC310
COM12V
IC311
M +10V
IC315
RY901
D919
D920
D322
D917
POWER AMP
TC 5V
B/UP 5V
MDM5V
Q339
SWITCH
Q318
CD8V
AMP
Q329
Q312
+5V
REG
Q901,903
0.22F
0.22F
AEP,UK
X301
4.332MHz
S901
VOLTAGE
SELECTOR
EXCEPT
SP,HK,TW
EXCEPT
SP,HK,TW
SP,HK,TW
• Abbreviation
HK : Hong Kong model
SP : Singapore model
TW : Taiwan model
w w w . x i a o y u 1 6 3 . c o m
Q Q 3 7 6 3 1 5 1 5 0
9
9
2
8
9
4
2
9
8
T E L
1 3 9 4 2 2 9 6 5 1 3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299