Sony WM-EX422 - Circuit Diagrams and Boards; Block Diagrams

99
WM-EX422
SECTION 5
DIAGRAMS
5-1. BLOCK DIAGRAMS
Q302
REF
MOTOR BLEAK
SWITCH
Q600–602
MUTE
RF & RET
37
829 19
10
22
7
41
42
16
39
29
28
36
9
12 12
13
11
15
38
13
5
21 18
30
4
1
5
25 16
16
26
VBAT
VBAT
Q703
VBAT
VCC
W
START
V
U
W
COM
V
U
VCC
L-CH
R-CH
FWD
R-CH
L-CH
REV
3
1
19
DRIVER
CONTROL
PRE
DRIVER
10 7
8
VREF
VREF
Q101
Q305
AVLS
IC301
PRE/POWER
AMP
Q201
Q202
Q102
Q604
INA
INB
RF
OUT
VREF
BASE
VCC
VREF
Q301
INV.
PRE
OUTA
PRE
OUTB
RV301
VOL
R-CH
PW
IN A
PW
IN C
BST OUT
BST SW
PW NFA
PW NFB
OUTA
OUTC
PW MUTE
PRE MUTE
R-CH
MUTE
F/R CTRL
BATT DET
14
BATT RET
BATT IN
TAPE DET
21
VDD1
23
VDD
VCC
IC701 (2/2)
SYSTEM
CONTROL
IC703
RESET
IC701 (1/2)
SYSTEM
CONTROL
IC601
CAPSTAN/REEL
MOTOR DRIVE
IN-PHOTO
1
FWD SW
2
FF SW
3
REW SW
4
REV SW
+2.5V
BATT_CTL2
BATT_CTL3
NC
KEY_IN
ENDRESS MODE
XTO
XTI
BEEP
Q303
EQ SWITCH
X701
32.768KHz
R-CH
R-CH
RV601
TAPE SPEED
S705
REW
S704
FF
S702
x
S703
Y
DIRECTION
S701
HOLD B
ON
R
OFF
IN+
M601
CAPSTAN/REEL
MOTOR
S301
TAPE DET
BATT 1.5V
DRY BATTERY
SIZE"AA"
(IEC DESIGNATION LR6)
1PS,1.5V
HP601
PLAY BACK HEAD
J301
i
VBAT
17
AMP_CTRL
10
PRE-AMP CTRL
6
MOTOR CTRL
8
MOTOR SPEED
7
MOTOR BLK
Q603
4
OUT
3
CE
4
LX
IC702
+2.5V
SWITCHING REG
2
VOUT
2
VIN
IC704
+1.3V REG
3
VCEN
VBAT
+2.5V
+2.5V
+1.3V
+1.3V
+1.3V
43
+2.5V
D701
(BATT)
VBAT
S302
AVLS
OFF t ON
S303
MEGA BASS
ON t OFF
S601
(MD CONT)
FWD
r
FF
r
REW
r
REV
GATE
Q751
+2.5V
PH751
9
PHOTO CTRL
VBAT VBAT
• Signal Path
: PB
• R-CH is omitted due to same as L-CH.