Diagrams; Block Diagram - Sony WM-EX900 Service Manual

SECTION 6

DIAGRAMS

6-1. BLOCK DIAGRAM

HP701
(PLAYBACK)
FWD L L
1
L CH
FWD
FWD R R
2
R CH
REV L L
5
L CH
REV
REV R R
4
R CH
REF V
3 VREF
SWITCH
VREF
8 6 11
MTL DRIVE MTL
CONTROL DRIVE
Q306 Q101,201
S704
-1
(TAPE IN)
-2
(ATS)
MOTOR SERVO
IC601
TU
12 TU UT 13 28 UT
TW
TW VT VT
10 11 29
TV
8 TV WT 9 30 WT
MOTOR
ICI1
SW
Q603
1 W WS 2 1 WS VI1
CAPSTAN
/REEL VI2
MOTOR
3 V VS 4 36 VS IV
M701
5 U US 6 35 US U IN
V IN
W IN
CTRL 1
W
31 W OUT CTRL 2
V
32 V OUT DIR
U
34 U OUT PSIG
19 MCENTER
MOTOR
C
SW 2 MC
Q601
B+
(+1.5V)
04
– 10 –
AUDIO AMP
IC301 (1/2)
+
PRE OUT L
7
–
+
PRE OUT R
10
–
B+
VCC 19
DOLBY
SWITCH
BEEP (+1.5V)
CONTROL
AMS DET
Q102
15 VREF
DOLBY
CONTROL
Q202
46 44 43 42 41 39 40
SYSTEM
CONTROL
AMS IN DOLBY CTL
39
IC701
36 BEEP
10 BOOST CTL
9 F/R CTL
MEGA BASS CTL
28 XTO
X701
REVIVE CTL
32.768kHz
XTI
29
5 CASSETE SW DATA/PMUM
M/N
MUTE CTL
CONTROL 12
Q703
PM CTL 17
18 PHOTO (T) CTL
Q702 (1/2)
RESET 35
T REEL
38 PHOTO (T) IN
SENS
PH702
Q702 (2/2)
A/B SW
S REEL
37 PHOTO (S) IN
SENS
PH701
FWD SW
RV601
TAPE
19 PHOTO (S) CTL
CEN SW
SPEED
MOTOR SPEED RVS SW
21 CONTROL 48 1/2
Q604
MOTOR
16 START SW 41 MOTOR START
Q602
17 KEY IN 16
15
4 47 MOTOR U BATT DET 15
5 46 MOTOR V
6 MOTOR W
45
7 44 CTRL 1
8 43 CTRL 2
9 42 MOTOR DIR
10 P SIG
40
AMP CTL 11
DOLBY AMP
IC302
4 5
11 10
DOLBY
B+
VCC 14 REG
VOL MAX VOL MIN
(+2.5V)
Q305
CONTROL CONTROL
Q103,203 Q104,204
B+
(+2.5V)
20
AUDIO
8 PW SW
Q303
PW NF
7 L/R SW
Q302
6
PM701
PLUNGER
PLUNGER
DRIVE
Q701
B+ (+1.5V)
RESET
IC704
S702
1
(A/B)
S701
(N/R)
2
FWD
3 CENTER
4
RVS
S703
HOLD
VOLTAGE DETECT
IC702
1 OUT1 CE 7
2 OUT2
DC/DC CONVERTER
IC703
3 OUT3
B+
4 OUT4 VCC 8 V OUT
(+1.5V)
1 CE
• Signal path
: PB
AUDIO AMP
IC301 (2/2)
PW IN L
28 + PW OUT L
20
–
PW IN R
+
27 PW OUT R
22
–
S301
VOL
AVLS
MIN
NORM
MAX
PW IN C PW OUT C
32 21
PW NF R
26
PW NF L
29
AGC IN
35
RIPPLE
BASE RIPPLE
18
FILTER
FILTER
Q301
RF OUT
17
B+
(+2.5V)
BATTERY CASE
DC IN 1.5V
2
LX 5 DRY BATTERY
RECHAGEABLE
SIDE "AA"
B+ BATTERY
(IEC DESIGNATION R6)
(+1.5V) NH-14WM
1PC, 1.5V
1.2V 1400mAh
– 11 –
WM-EX9
J301
REMOTE
GND
REMO
DATA
VCC