Read Sharp CD-C420H Service Manual online
CD-C405W/CD-C420H/CP-C410/CP-C405/CP-SR421
– 14 –
Figure 14 BLOCK DIAGRAM (2/3)
TAPE
VIDEO/AUX
TUN
CD
1
3
4
4
5
17
18
13
6
7
16
14
12
19
10
23
24
8
9
1
3 4 5
1
7
7
6
20
12
22
15
16
11
21
17
13
10
1
5
4
2
7
3
8
6
8
9
17
14
15
12
10
21
22
23
24
13
18
16
5
4
3
2
6
2
4
20
21
R-CH
L-CH
PB HEAD
L NF
L (T1)
R (T1)
L (T2)
R (T2)
R NF
H/N
T1/T2
POP REDUCE
L REC
R REC
R NF
REC
L NF
P. B.
REC
L-CH
R-CH
REC/PB
HEAD
ERASE
HEAD
OCS
BIAS
REF
ALC
T1/T2
X352
4.5MHz
OSC
STEREO
ST
ST
AM IF
FM IF IN
VT
FM IN
AM IN
FM
+B4
AM
TRACKING
AM BAND
COVERAGE
PLAYBACK&RECORD/
PLAYBACK AMP.
IC101
AN7345K
L
R
P. B
FE301
FM FRONT END
420H: S0003AW
405W: S0005AW
Q128
L104
L104
BIAS
Q106
Q103
~
P.B
REC
AC BIAS
Q107
Q108
Q108
Q111
Q109
Q110
T1/T2
MUTING
Q121
Q122
Q122
REC
+B4
L
R
CE
DI
CL
DO
T351
IC302
LC72131
PLL CONTROLLER
FM
TAPE 1
TAPE 2
R
L
SWITCHING
SWITCHING
SWITCHING
SWITCHING
SWITCHING
FM IF
CF302
CF301
420H ONLY
Q301
VCC
SO301
ANTENNA
TERMINAL
TERMINAL
AM LOOP
ANTENNA
L311
BALUN
Q360
+B4
Q361
VR351
FM MUTE LEVEL
FM OSC
IF OUT
AM RF IN
AM OSC IN
AM OSC OUT
AFC
SD
FM/AM
MUTIN
+B6
+B4
REGURATER
VOLTAGE
L-CH
R-CH
R-CH
L354
420H ONLY
+B6
MONO/
MIX
OUT
OUT
REG
FM
DET
Q124
Q126
SWITCHING
BIAS
X351
CF351
IC303
LA1832
FM/AM IF
T302
AM AMT.
FROM CD SECTION
SO
CD-C405W
BLOCKMAIN
420H ONLY
405W ONLY
420H ONLY
420H ONLY
FM
AM
FM/AM
ANTENNA
TERMINAL
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