Sony CFD-S250 - Block Diagram - Main Section

CFD-S250
19 19
2
5
21 22 16
4
L-CH
R-CH
HRP301
RECORD/PLAYBACK
HEAD
HE301
ERASE HEAD
DET
ALC 2
RADIO L
18
15
L.LO
R.LO
LINE
TAPE
R-CH
TU_IN_R
TU_IN_L
TAPE
LOGIC
5
CLOCK
4
DATA
POWER AMP
IC304
D322
R-CH
SP201
SPEAKER
(L-CH)
SP101
SPEAKER
(R-CH)
J321
REF
L.LINE
L.RO
REC L.RAD
R.RAD
T301
REC BIAS OSC
Q301
ISS1
66
TAPE
37
V-CLK
V-DATA
CD
CD-CONT
D810
26–106 – 9
LIQUID CRYSTAL
DISPLAY PANEL
LCD401
SYSTEM CONTROLLER
IC802 (2/2)
7736 78
DBB
68
LINE IN
34
COM0
|
COM3
S0
|
S16
EEPROM
IC803
REMOTE
CONTROL
RECEIVER
IC401
SCL SAD
46
MODE CHK
50
WP/INI
Q813
Q812,D807
VOL
48 1
3
KEY1
45
KEY2
44
KEY3
43
KEY4
42
Signal path
: FM
: AM
: TAPE PLAY
: TAPE REC
: CD
R-ch is omitted due to same as
L-ch.
REC/PB
PRE AMP
IC301
11 5
MEGA
BASS
CONTROLLER
Q122
20
6
14
R.LINE
8
R.IN
L.IN
9
R.RO
i
A-MUTE
35
MUTE
Q124
LEVEL
DETECT
D323
LINE
AMP
Q942
TC-PLAY
49
M
TAPE PLAY
DETECT
Q808
24
REC
27
-1 -2
S301
(REC/PB)
REC
PB
VDD (SW)
KEY4
KEY3
KEY1
KEY2
S301
(TAPE PLAY)
M301
CAPSTAN/REEL
MOTOR
17
CD_IN_R
CD_IN_L
S417-424
S413-416,425-428
S409-411
S401,402,434-438
65
7980
AUDIO 6V
Q302
AC-HI
REMOTE
U-COM
(VDD)
VDD (SW)
1
ISS2
67
Q303
KEY NETWORK
D405
OPR/BATT
D804
VIN2
VOUT2
IC301
ELECTRONIC VOLUME
8 7
VOL AMP
EXCEPT
US,CND MODEL
Q814
18
11 12
20 19
AM IN FM IN XOUT XIN
13
MO/ST
10
IF IN
LPF2/MO-ST
LPF1/BAND
ST-IND
OSC-OUT
7
BAND
8
ST-IND
LP-OUT
17
LP-IN
16
PD
AM
OSC
AM
MIX
FM
MIX
FM
OSC
AM
RF-IN
FM
RF-IN
FM
RF-OUT
X1
75kHz
FM/AM PLL
IC2
14 17 13 18
16 15
11
12
1920
22 4 6
7
10
2
2124
T1
CF4
L2L1 CT1
RADIO 6VRADIO 6V
D1 D2
CT3
D3
L3
AM
FERRITE-ROD
ANTENNA
CT3,L3
AM
TRACKING
CT1,L1
FM
TRACKING
ANT1
FM
TELESCOPIC
ANTENNA
IF
BUFFER
AM
DET
FM
DET
IF CUT
AF
BUFFER
FM
MPX
MUTE
IF CUT
R-OUT
L-OUT
TU_IN_R
RADIO 6V
QUAD
FM/AM FRONT END, IF AMP,
FM MPX
IC1
AM
FREQUENCY
COVERAGE
L4
RADIO 6V
L4
CF2
RADIO 6V
RADIO 6V
RADIO 6V
FM OSC
AM OSC
MIX-OUT
AM
IF-IN
FM
IF-IN
IF-OUT
DET-OUT
MPX-IN
T2
T2
FM IF
L2
FM
FREQUENCY
COVERAGE
VDD (SW)
T1
AM IF
D324
5759 58 56
60
R-LAT R-CLK R-DATA R-COUNT
76
RST B-MUTE
74
X1
75
X2
TUNER
X802
4.19MHz
RESET
IC804
70
XT1
71
XT2
X801
32.768kHz
3.3V
1
2
1 2 3 4
CE CL
DI
DO
6-4. BLOCK DIAGRAM — MAIN SECTION —
(Page 18)
(Page 18)