Adjustment - Sharp CD-C462 Service Manual

CD-C462/C462C
FM&AM LOOP ANT
FM BPF
IC301
FM FRONT END
BF301 1
TA7358AP
2 3 4
5
L302 FM RF
AM TRACKING
CNS11
FROM CD SECTION
CNP11
TAPE 1
PB HEAD
L-CH
R-CH
TAPE 2
REC/PB REC
HEAD
P.B
L-CH
R-CH
AC BIAS
ERASE
HEAD
FM IF
6 T301
9
7 8
L303 FM OSC
Q302
OSC BUFF
AM BAND
COVERAGE
T302
AM ANT.
6 1
5 2
5 3
PLAYBACK&RECORD/
PLAYBACK AMP.
IC101
AN7345K
L (T1)
1 13
P.B.
R (T1) 24
SWITCHING
L 4 L
L (T2)
Q103 2
R
21 R
R (T2) 23
Q106
3 5
L NF
R NF 4 20
POP REDUCE
H/N L
6 T1/T2
7
REC
18
L REC R
9
16
R REC 8 L NF
17 R NF
ALC
REF 14 10
NOR/
HIGH T1/T2
12
15 19
SWITCHING
SWITCHING
Q107
Q111
Q108
Q109 Q110
SWITCHING
BIAS
SWITCHING
OCS
Q128
L104
Figure 12 BLOCK DIAGRAM (2/3)
CF301
FM IF IN
FM OSC
VT
SWITCHING
FM +B
Q344
Q121
Q122
MUTING
+B4
P.B
REC
BIAS
Q124 Q126
– 12 –
+B4
+B4
VR351
MPX VCO ADJ
AM IF
T351
T352
FM DET
1 3 6
5 21 20 13
VCO
AM MIX AM IF GND FM+B FM DET
FM/AM IF
IC303
MPX IN
LA1805
DET OUT
24 23 22 7
17 16
X352
4.5MHz
3 4 5
20 1 22 15 16 11
OSC
IC302
LC72131
PLL CONTROLLER
7 10
FM
+B4
REC
8 18 45 44
34 CL
IC501
38 CL
LV1035M
DATA
35
DOLBY PRO LOGIC
DECORDER
37 DATA
36 ENABLE
42 33 21
T1/T2
BIAS
15
MO/ST
L 9
10
R
FM/AM
11
FM/AM
SWITCHING
Q343
VOLTAGE
REGURATER
+B
6
17
21
ST FM
JK601
VIDEO/AUX
L
A
R
TAP
TU
CD
23 24
31 32
X501