Block Diagram - Sony WM-FX271 Service Manual

5-2. BLOCK DIAGRAM

EXCEPT
US,CND,C&SA
FM/AM RF, IF, MPX
US,CND,C&SA
S303-2
CP1
DX
B.P.F 1 FM IN
4 FM/AM MIX
LOCAL CF2
10.7MHz
8 FM IF
T1 T1
AM IFT
AM IF
CF1
450kHz
7 AM IF
DC/DC D303
RADIO
CONV. 23 FM RF
+B
Q307, T301
L2 D2
FM
L2
TRACKING
FM RF
21 FM OSC
L3
FM
D3
TUNING
VOLTAGE
L3
FM OSC
L4
AM
TRACKING
D1
20 AM OSC
VCO
BUFFER
L4
Q2, 703
AM OSC
CT1
24 AM IN
EXCEPT US,CND,C&SA
L1
RADIO
AM
S303-2
+B
FERRITE-ROD
ST
ANTENNA
15 LPF2
CT1,L1
FM MONO 10 TUN LED
AM
TRACKING
L.P.F
Q701,702
21 20 19 15
04
31 34
• R-CH: same as L-CH • Abbreviation
CND : Canadian model
• Signal path
C&SA : Central and South America model
: FM
AEP : Headphone (MDR-E805LP) model
: AM
2AEP : Earphone (MDR-023) model
: PB
FR : French model
CEV : Poland, Czech, Greece and Turkey model
CH : Chinese model
EE : East European model
E : Indication of country of origin
9E : No indication of country of origin
– 11 –
HP901
PLAYBACK
IC1
HEAD
FWD IN(L)
10
L OUT 14 L
REV IN(L)
9
FWD
R-CH
R
R OUT 13 R CH
NF
6
DET OUT
18
MPX IN 17 SYSTEM
RADIO
15
+B
RADIO
NF LEVEL
+B
SWITCH
Q101
RADIO+B
VCC2 6 SWITCH BATT+B
Q53
QUAD 12 X2
DOLBY B+
AMP
BATT
SWITCH
+B S303-1
+B
Q331
NORM
LPF1 19
CrO /
2
METAL TAPE +B
TAPE +B
BAND
SWITCH
Q703
16 5
SYSTEM CONTROL/
LCD DRIVE
IC701
35 49 25 24
X701
LCD701
75kHz
LIQUID CRYSTAL
DISPLAY PANEL
M901
CAPSTAN/
REEL
MOTOR
BATT+B
AUDIO POWER AMP
IC301(1/2)
+
5
–
MIX
IN(L)
30
H.PIN(L)
28
32
L.B-SW
SYS CONT
21
R-CH
MUTE
TAPE +B
Q306
AEP,2AEP,FR,CEV,CH
14 4 52 6
MOTOR SERVO
IC301(2/2)
39 UOUT
IN+ 35
40 VOUT
RV601
M-V REF 34
41 WOUT TAPE
(COM)
SPEED
VOLUME
∑
RV301-1
MIX POWER POWER
OUT(L) IN(L) OUT(L)
24 22 16
PWR
POWER
OUT(COM) 18
26
R-CH
S305-1
AVLS
NORM
LIMIT
S701, 702, 704-708,
713, 715
FUNCTION
KEY
EE,E,9E
VDD
ON
S701
HOLD
OFF
D701
8 10,11,54,56 1 17
13 12
TAPE +B
BATT+B
REG
3 1 (IEC DESIGNATION R6)
IC702
D731
VDD
Q308
– 12 –
WM-FX271/FX275
R CH
J301
L CH
COM
S301
TAPE
( )
POWER
DRY BATTERY
SIZE "AA"
2PCS, 3V
J302
DC IN
3V