Sony WM-EX900 - Electrical Adjustments; Tape Speed Adjustment Procedure

– 10 – – 11 –
WM-EX9
6-1. BLOCK DIAGRAM
SECTION 6
DIAGRAMS
AMS IN
BEEP
BOOST CTL
F/R CTL
DOLBY CTL
MEGA BASS CTL
REVIVE CTL
XTO
XTI
CASSETE SW
MUTE CTL
PHOTO (T) CTL
PHOTO (T) IN
39
36
20
8
7
10
9
28
29
5
12
18
38
PHOTO (S) IN
37
PHOTO (S) CTL
19
1/2
48
MOTOR START
41
MOTOR U
47
MOTOR V
46
MOTOR W
45
CTRL 1
44
CTRL 2
43
MOTOR DIR
42
P SIG
40
X701
32.768kHz
M/N
CONTROL
Q703
DOLBY
CONTROL
Q102
DOLBY
CONTROL
Q202
DOLBY
REG
Q305
AUDIO
PW SW
Q303
PLUNGER
DRIVE
Q701
RESET
IC704
PW NF
L/R SW
Q302
RIPPLE
FILTER
VOL MAX
CONTROL
Q103,203
VOL MIN
CONTROL
Q104,204
RIPPLE
FILTER
Q301
MTL
DRIVE
Q101,201
MTL DRIVE
CONTROL
Q306
T REEL
SENS
PH702
MOTOR
SW
Q601
-1
(TAPE IN)
-2
(ATS)
15
19
10
41 39 4042434446
S REEL
SENS
PH701
MOTOR SPEED
CONTROL
Q604
MOTOR
START SW
Q602
Q702 (1/2)
Q702 (2/2)
RV601
TAPE
SPEED
21
30
29
28
S704
16
17
15
1
36
35 4
5
6
7
8
9
10
31
32
34
19
2
MOTOR SERVO
IC601
9
11
13
2
4
6
8
10
12
1
3
5
MOTOR
SW
Q603
1168
1
2
SWITCH
SWITCH
BEEP
M/N F/R BST PW MT
AMS DET
VCC
PRE OUT R
PRE OUT L
+
–
+
–
7
5
4
3
AUDIO AMP
IC301 (1/2)
VREF
FWD L
FWD R
REV L
REV R
L
R
L
R
REF V
ICI1
VI1
VI2
IV
U IN
V IN
W IN
CTRL 1
CTRL 2
DIR
PSIG
UT
VT
WT
UT
VT
WT
WS
VS
US
TU
TW
TV
TU
TW
TV
W
V
U
W
V
U
C
04
WS
VS
US
W OUT
V OUT
U OUT
MCENTER
MC
B+
(+1.5V)
SYSTEM
CONTROL
IC701
DATA/PMUM
6
PM CTL
17
RESET
35
A/B SW
1
FWD SW
2
CEN SW
3
RVS SW
4
KEY IN
16
BATT DET
15
AMP CTL
11
B+
(+1.5V)
VREF
11
4
10
14
5
DOLBY AMP
IC302
VCC
B+
(+2.5V)
B+
(+2.5V)
S301
VOL
AVLS
MIN
NORM
MAX
PW IN C
PW IN R
PW IN L
PW NF R
PW NF L
29
26
32
27
28
21
35
22
20
+
–
+
–
PW OUT L
PW OUT R
18
17
BASE
RF OUT
PW OUT C
AGC IN
AUDIO AMP
IC301 (2/2)
PM701
PLUNGER
B+ (+1.5V)
S701
(N/R)
FWD
CENTER
RVS
S702
(A/B)
S703
HOLD
1
2
3
4
7
8
OUT1
OUT2
OUT3
OUT4
CE
VCC
VOLTAGE DETECT
IC702
CE LX
V OUT
B+
(+1.5V)
1 5
2
DC/DC CONVERTER
IC703
B+
(+1.5V)
B+
(+2.5V)
RECHAGEABLE
BATTERY
NH-14WM
1.2V 1400mAh
DC IN 1.5V
BATTERY CASE
DRY BATTERY
SIDE "AA"
(IEC DESIGNATION R6)
1PC, 1.5V
GND
REMO
DATA
VCC
J301
REMOTE
CAPSTAN
/REEL
MOTOR
M701
HP701
(PLAYBACK)
L CH
R CH
FWD
L CH
R CH
REV
VREF
• Signal path
: PB