Diagrams; Block Diagram - Sony WM-FX495 Service Manual

5-1. BLOCK DIAGRAMS
IC1
FM/AM FRONT END
IF DET, FM MPX
FM
RF IN
2
MIX
FMRFOUT
L7
29
L7
FM
FM-
TRACKING
RF
D4
FM/TV OSC
24
L3
OSC
FM-
OSC
D3
1/8 or 1/16
L4 CT1
AM
BAR ANTENNA AM RF IN
27
CT1,L4
AM B/P
MIX
28
AM
TRACKING
D1
L5
AM-OSC
AM OSC
L5
25
AM OSC
FREQUENCY
COVERAGE
(VT) Q404,408
LPF
PRE/POWER
HP601
PLAY BACK HEAD
Q101
INA
29
L-CH
Q201
FWD
INB
30
R-CH
R-CH
Q202
VREF
REV
5
L-CH
Q102
VREF
Q301
INV.
VBAT
16 VCC
COM
W W
3
V
V
1
U U
19
M601
CAPSTAN/REEL
MOTOR
MOTOR
BLEAK
SWITCH
TAPE SPEED
Q604-606
Q607
VBAT
INV.
SECTION 5

DIAGRAMS

X1
(FM DISC)
11
QUAD
CF1
DET
FM- FM- MPX
(FM IF)
FM MIX IF IN FM OUT IN
4 8 12 13
DET
IF BAFF
FM
SW
CF2
AM- AM-
(AM-IF)
AM MIX IF IN
AM
5 10
DET
AM
VCC RF VCC
OSC BUFF
7
D402 T401 Q401
VBATT
Q405
T401,Q405
OSC
DC/DC CONVERTER
VREF
IC301
7
BST SW
AMP
Q305 RV301
AVLS
VOL
PRE
PW
OUTA IN A
4 8
PW
PRE IN C
21
OUTB
1 R-CH
BST OUT
22
RF & RET
MUTE
RF
BASE
VCC
OUT
26 25 16
VCC
Q302
VBAT
REF
IC601
CAPSTAN/REEL
MOTOR DRIVE
START
VREF 8
DR
6
10 7
RV601
Q603
IC701 (1/2)
LOUT
16
SYSTEM
CONTROL
ROUT
15 R-CH
LPF1
14 56 MONO/STEREO
IF
COUNT
19 45 IF IN
REQSW
20 54 IF_REQ
MODE-1
21 32 BAND1
MODE-2
22 33
BAND2
OSC OUT
23 49 VCO IN
26
Q2
57 RADIO_ON
52 DO
23
AVLS_CTRL
24 MB CTL
PW NFA
9
PW NFB 10
Q303
EQ SWITCH
OUTA
19
OUTC
IC501
18
EEPROM
CS 1 37 E2P_CS
CK 2 39 E2P_CLK
R-CH
DI 3 38 E2P_DATA
DO 4
PW MUTE
12 40 MUTE CTL
PRE MUTE
13
35 PRE CTRL
VBAT 2 1 70 RESET
IC704
RESET
25 F/R_CTRL
MOTOR_START
28
30 MOTOR_SPEED
29 MOTOR_BREAK
MOTOR_DIR
27
IC701 (2/2)
SYSTEM
CONTROL
11 11
S2
I LCD1
S17
LIQUID
COM1 CRYSTAL
I
DISPLAY
COM4
K4 65
KEY
VBAT
K3 64
MATRIX
K2 63
S702-715
K1 62
S601
(MD CONT)
KO1 66
FWD
KO2 67
KO3 68 FF
KO4 69
REW
RVS
MECHA SW
60
42 S701
HOLD
HOLD
51
PHOTO CTL
ON
INV.
44
PHOTO_IN OFF
Q751
XOUT 71
SWITCH
X701
Q752,753
XIN 72 32.768KHz
PH751
BEEP
36
R-CH
R-CH
D801
L801
+2.5V
5
LX
+1.6V 2 3 2 1
VOUT VIN VOUT CE
BATT DET 58
IC201 IC801
+1.6V REG. +2.5V SWITCHING REG.
DDC_CTRL 26
TAPE DET 46
REMOTE
59
AMP_CTRL 34
VCC
Q304
VBAT
• R-CH is omitted due to same as L-CH.
• Signal Path
: FM
: AM
: PB
WM-FX495
+2.5V
J301
i
S301
(TAPE SW)
DRY BATTERY
SIZE"AA"
(IEC DESIGNATION LR6)
1PC,1.5V