Block Diagram - Main Section - Sony CFD-S250 Service Manual

6-4. BLOCK DIAGRAM — MAIN SECTION —
CD_IN_R
(Page 18) 1
CD_IN_L
HRP301
EXCEPT
RECORD/PLAYBACK
US,CND MODEL
HEAD
L-CH
R-CH
S301
HE301
-1 -2
(REC/PB)
ERASE HEAD
REC
PB
Q302 Q303
AUDIO 6V
27 66
80 79 6 – 9
5 6
LIQUID CRYSTAL
EEPROM
DISPLAY PANEL
IC803
LCD401
VDD (SW)
D324
L4
AM
FREQUENCY
COVERAGE RADIO 6V
D3
L3
AM
FERRITE-ROD
ANT1
AM
ANTENNA
FM
RF-IN
22
TELESCOPIC
ANTENNA
CT3
FM
RADIO 6V
RF-IN
2
CT3,L3
AM
TRACKING
CT1,L1
L1 CT1
FM
TRACKING
RADIO 6V
R.RO
9
R.IN
8
R.LINE
REC/PB
DET
14
PRE AMP
L.RO IC301
4 ALC 2
L.LINE
L.LO
24 20
L.IN
R.LO
5 18
RADIO L
LINE 17
6
REF
TAPE
15
21 22 16
TU_IN_R
T301
REC BIAS OSC
Q301
67 37
SYSTEM CONTROLLER
TUNER
IC802 (2/2)
70 71 74 75 76
26–10 59 57 58 56
1
RESET
X801 X802
IC804
32.768kHz 4.19MHz
2
3.3V
1 2 3 4
FM/AM PLL
16 PD
IC2
17 LP-IN
18 LP-OUT
11 12 20 19 13
L4
X1
75kHz
20 19 14
AM OSC
FM/AM FRONT END, IF AMP,
FM MPX
IC1
AM
OSC
AM
MIX-OUT
T1
IF-IN
AM
4 6
MIX
CF4
FM
MIX
RADIO 6V
FM
FM
IF-IN
OSC 7
CF2
FM
RF-OUT FM OSC
RADIO 6V
24 21
T1
AM IF
L2
L2
FM
FREQUENCY
RADIO 6V
COVERAGE
D1 D2
IC301
ELECTRONIC VOLUME
VOL AMP
LINE
VOUT2
VIN2
AMP 8 7
Q942
R-CH
LOGIC
5 4
D810
CD-CONT
2
(Page 18)
36 77 78 34
VOL
60
10 7 8
Q814
17 13 18
IF-OUT
IF CUT
IF
BUFFER
AM
DET
MPX-IN
DET-OUT
AF FM
16 15
MUTE
BUFFER MPX
FM
IF CUT
DET
10
T2
T2
FM IF
RADIO 6V
19 19
POWER AMP
IC304
R-CH
11 5
MEGA
MUTE
BASS
Q124
U-COM
CONTROLLER
(VDD)
Q122
LEVEL
DETECT
D323
D322
TAPE PLAY
DETECT
Q808
68 35 49
REMOTE
CONTROL
REMOTE 48 1
RECEIVER
IC401
46 50 45 44 43 42
AC-HI
D804
VDD (SW)
Q813
Q812,D807
D405
OPR/BATT
KEY NETWORK
KEY4
S417-424
KEY3
S413-416,425-428
KEY2
S409-411
KEY1
S401,402,434-438
Signal path
: FM
: AM
R-OUT
: TAPE PLAY
11 TU_IN_R
L-OUT
12
: TAPE REC
: CD
R-ch is omitted due to same as
L-ch.
CFD-S250
J321
i
SP201
SPEAKER
(L-CH)
SP101
SPEAKER
(R-CH)
VDD (SW)
S301
(TAPE PLAY)
M
M301
CAPSTAN/REEL
MOTOR
3