Sharp CD-DD4500 Service Manual page 22

CD-DD4500
AM
FM
CNP301
8
6 7
AM TRACKING
T306
T303
JK601
VIDEO IN
AUX
PLAYBACK
HEAD
TAPE 1 L-CH
R-CH
RECORD/
REC
PLAYBACK HEAD
P.B.
1
L-CH
TAPE 2
3
R-CH
SELECTOR
6
AC BIAS
ERASE HEAD
FE301
1 CF303
FM FRONTEND
2 5 4 3
1 2
VCC
23 21
X352
4.5 MHz
VT
20
1 22
OSC
IC302
LC72131
PLL(TUNER)
7
+B4
FM
Q360
SWITCHING
FROM CD SECTION
CNP7
+B5
3
IC501
TORX178B
1
OPTICAL FIBER
DATA LINK
2
+B4
23
L
11
TUNER
14
R
L
9
L
AUX
4
16
R
21
R
L
10
TAPE
15
R
3
IC101
PLAYBACK AND RECORD
/PLAYBACK AMP.
L(T1) 1
R(T1)
24
IC102
9 2
L(T2)
BA3126N
R(T2)
23
7
HEAD
4
L NF
3
2 5 8 R NF 22
POP REDUCE 6 T1/T2
L REC
9
REC
R REC 16
REF 14
NOR/
15
HIGH
T1/T2
19
12
SWITCHING
Q101 Q102
BIAS OSC SWITCHING
BIAS
Q128
Q124
Q126
L104
L103
Figure 22 BLOCK DIAGRAM (2/3)
10.7 MHz
450 kHz
T351
CF352 CF351
AM IF
4 5 9 8
IC303
LA1832S
FM IF DET./FM MPX./AM IF
FM/AM
MPX IN
OUT FM/AM
18 12
7 16
11 3 4 5 6
15 16
17
9 10 21
+B5
14
9
IC502
74VHC00F
INVERTOR
12
7 6
+B5
71 53 24 34
14
13 VSS
35 VSS
49 VSS 18
62 VSS 22
81 VSS
95 VSSDL
CKO 47
IC504
97 VSSX
IX0443AW
DOLBY DECODER
98
XO
99 XI
+B4
13
4
L PB
R
21
5
20
MUTING
H/N
7 L REC
Q121
Q122
R REC
18
8 L NF
17 R NF
10 ALC
TO IC181
– 22 –
X351
456kHz
17 13
R L
15
14
6-CH ELECTRONIC
IC505
AK4527BVQ
6-CH CODEC IC
+B4
37 16 36
ROUT2
26 SWIN
6
4
ROUT3 24
8 SR_IN
LOUT3
23
9 SL_IN
9
LOUT2 C_IN
25
11
ROUT1
28 13 R_IN
LOUT1 27 L_IN
39 15
12 GND_R
32 30
MOTOR
DRIVER
+B3 Q102
TAPE 1
SOLENOID DRIVER
TAPE
MECHANISM
+B3 Q102
ASS'Y
TAPE 2
SOLENOID DRIVER
Q102
+B3
+B4
IC60
NJM45
BUFFER
4
3
2
5
6
IC
NJM
BUFFE
IC602
M62446FP
4
VOLUME
3
+B4
2
5
42
6
SW_OUT 36
C_OUT
33
L_OUT 31
R_OUT
32
IC
SL_OUT
34
NJM
SR_OUT
35
BUFF
4
3
2
5
6