Read Sony CMT-EP303 / HCD-EP303 Service Manual online
18
18
HCD-EP303
6-2. Block Diagrams
TUNER/TAPE DECK Section
: FM
: AM
• Signal Path
• R-CH is omitted due to same as L-CH.
: PB(TAPE)
: REC(TAPE)
9
13
12
11
1
3
10
5
15
7
7
16
18
19
20
15
8
11
12
6
4
5
3
7
2
4
3
1
22
Q101
FM OSC
BUFFER
BUFFER
Q102
BAND
SWITCH
Q703
MUTING
CONTROL
SWITCH
Q704
MUTING
CONTROL
SWITCH
Q702
MUTING
Q104
AMP
Q601
BUFFER
BPF
ANT1
AMRF
IN
AM
OSC
24 FMRF
IN
22
FMRF
OUT
FM
OSC
20
QUAD
AM
OSC BUFFER
FM
ANT
L110
AM ANT
D105
T102
AM OSC
L103
FM RF
D103
D104
L104
FM OSC
F101
10.7MHz
T103
X101
10.7MHz
PD
LRFIN
LPFOUT
FMIN
AMIN
BO1
IO1
IFIN
DO
DI
CL
CE
IC102
FM/AM PLL
X102
7.2MHz
XIN
XOUT
AM MIX
FM MIX
FM DET
SD
AM/FM
IF
BUFFER
AM IF
16
17
L
R
IC101
AM/FM IF AMP,
MIX, MPX, DET, OSC
REC
BIAS
OSC
Q706
SW701
(3/6)
REC
PB
R-CH
L
R
T701
REC BIAS
ERASE HEAD
REC/PB HEAD
AMP
ALC CONT
ALC IN1
IN1
OUT1
M
41 36 37 47 38
60
(CAPSTAN/REEL)
STEREO
45
SYNCRO
TUNER SD
ST
PLLDI
PLLCE
PLLCL
PLLDI
PLLCE
PLLCL
STOUT
SIG
SIG
ST
PLLDI
PLLCE
PLLCE
PLLCL
STOUT
AMP SECTION
B
AMP SECTION
C
AMP SECTION
D
DISPLAY SECTION
E
AMP SECTION
A
IC701
ALC REC/PB AMP
IC601 (1/3)
SYSTEM CONTROLLER
R-CH
TUNER
L-CH
PL
RL
DC_12V
(MAGNET)
COTR
S201
(PLAY)
+
TC102
TC101
FM FREQUENCY
COVERAGE
AM FREQUENCY
COVERAGE
AM TRACKING
FM TRACKING
F102
PLLDO SELECT
DISPLAY SECTION
F
M201
SW701
(4/6)
PB
REC
SW701
(6/6)
PB
REC
SW701
(5/6)
REC
PB
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