Block Diagrams - Sony WM-EX651 Service Manual

6-2. BLOCK DIAGRAM
AUDIO MASTER AMP
IC301
HP901
(PLAYBACK)
FWD
IN-L
L-CH 1
PREAMP
5
FWD
REV
IN-L
R-CH
R-CH
R-CH METAL
CONTROL
L-CH
REV
44 46
R-CH R-CH
S701
FWD (DIRECTION)
STOP
REV
4 3 2 9 5
PHOTO REFLECTOR
IN PHOTO 37 SWITCH & BUFFER
Q702
PHOTO CTL 18
PLUNGER
PM CTL 17
DRIVE
Q701
WM-EX651
RV301
VOL
PRE
OUT-L
7
EQ
MTL
DRV-L
8
R-CH
AVLS CONTROL
SWITCH
Q304
+
R-CH
S901-2
R-CH
(ATS)
CUE REVIEW
VOLUME SWITCH
Q306
MEGA BASS/GROOVE
S901-1
(TAPE DETECT)
47 38
28 29 48 46
X701
32.768kHz
M901
(CAPSTAN/REEL)
BATT B+
ROTATION DETECT
SENSOR
PH701
W
DDC B+
PM901
(PLUNGER)
RIPPLE FILTER
BATT B+
Q301
17 18 19
RF OUT BASE VCC
PW
POWER AMP
IN-L
28
POWER AMP
R-CH
PW
IN-C
32
BASS BOOST POWER AMP
BST AMP
OUT
PW
V/I
33
NF-L
29
AMS
EQ-L
AGC R-CH
IN 30
12 AMS
DET
40 43 35
SWITCHING
R-CH
Q303
REVIVE/GROOVE
SWITCHING
Q302
8 39 10 7
20
RV601
FAST TAPE SPEED
RV602
SPEED CONTROL
SLOW
Q603
CUE/REVIEW
SWITCH
COMPARATOR
IN+
OUT 10
+
11
VSP
–
9
SPEED
CONTROL
VREF
U
19
MOTOR
SWITCH &
OSC
V
1 DRIVE LOGIC REFERENCE
CIRCUIT
W
CIRCUIT CIRCUIT
3
U
DIRECTION CONTROL
V
6 5
+
Q604
MOTOR
CONTROL SWITCH
13 13
J301
i
PW OUT-L
+
20
PW OUT-R
+
22
PW OUT-C
21
BATT B+
BEEP
39 41 42
S707
HOLD
OFF ON
36 19 11 6 16 12 43 42
44 1 45 23 15 13 14 35
BATT DDC
B+
B+
TH601
Q605
RESET SIGNAL
FF/REW CTL
GENERATOR
SWITCH
IC703
7
BIAS
START
8
VOLTAGE
VDD B+
CAPSTAN/REEL
MOTOR DRIVE DDC B+
IC601
BATT B+
WM-EX651
VCC
DATA
REMOTE
GND
S704
Y
S703
AMS
x
S705
FF/CUE
S706
REW/REVIEW
41 40
SYSTEM CONTROLLER
IC701
REGULATOR
IC704
DC/DC
CONVERTER
DRY BATTERY
IC702
SIZE "AA"
(IEC DESIGNATION R6)
1PC. 1.5V
BATTERY PACK
(NI-CD)
(NC-10WM 1.2V)
• R-ch is omitted due to same as L-ch.
• Signal path
E : PLAYBACK