Block Diagram - Main Section - Sony CFD-S250L Service Manual

6-4. BLOCK DIAGRAM — MAIN SECTION —
Q111
J303
LINE IN
Q205
Q204
CD_IN_R
1
(Page 18)
CD_IN_L
Q112
HRP301
RECORD/PLAYBACK
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
L4
LW FREQUENCY COVERAGE
REG
VDD (SW)
Q61
D324 MW/LW
SW
Q14
CT5,L3-2
L4
LW
TRACKING
D3
LW SW
Q44
CT3,L3-1
RADIO 6V
MW
TRACKING
CT5
CT3
LW SW
Q43
AM RF-IN
22
-2 -1
ANT1
LW MW
FM
MW SW
TELESCOPIC
MW SW
ANTENNA Q41
Q42
RA6V
L3
MW/LW
FM
FERRITE-ROD
RF-IN
ANTENNA
2
CT1,L1
FM
L1 CT1
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
5 R.LO 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/MW/LW PLL
18 LP-OUT
IC2
6 MW/LW
11 12 20 19 13 10
X1
75kHz
20 19 14 17
FM/MW/LW FRONT-END, IF AMP,
FM MPX
IC1
AM
IF
OSC
BUFFER
AM
MIX-OUT T1
IF-IN
AM
4 6
MIX
FM
CF4
MIX
FM
RADIO 6V
FM
IF-IN
7
OSC
CF2
FM
RADIO 6V RADIO 6V
RF-OUT FM OSC
24 21 T1
MW
L2
IF
FM
D1
D2 L2
FREQUENCY
COVERAGE
RADIO 6V
IC301
ELECTRONIC VOLUME
VOL AMP
VOUT2
LINE AMP VIN2
8 7
Q942
R-CH
LOGIC
5 4
POWER
LINE AMP
CONTROL
6V
Q816,817
CD-CONT
2
(Page 18)
36 77 78 34
VOL
60
7 9 8
Q814
13 18
IF CUT
MW/LW
HIGH
CUT
Q12
AM
DET
DET-OUT R-OUT
MPX-IN
AF FM
16 15 MUTE L-OUT
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
AUDIO DETECT
6V Q808
68 35 49
REMOTE
CONTROL
REMOTE 48 1
RECEIVER
46 50 45 44 43 42
AC-HI
D804
VDD (SW)
Q813
Q812,D807
D405
OPR/BATT
KEY NETWORK
KEY4
S417-424
KEY3
S413-416,425,426,428
KEY2
S409-411,
KEY1
S401,402,434-438
Q406
3.3V
S439
Signal path
: FM
: MW
: TAPE PLAY
11 TU_IN_R
12
: TAPE REC
: CD
R-ch is omitted due to same as
L-ch.
CFD-S250L
J321
i
SP201
SPEAKER
(L-CH)
SP101
SPEAKER
(R-CH)
VDD (SW)
S301
(TAPE PLAY)
M
M301
CAPSTAN/REEL
MOTOR
IC401
3