Sony WM-EX651 - IC Block Diagrams

WM-EX651
1212
WM-EX651
For schematic diagrams.
Note:
• All capacitors are in µF unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics
and tantalums.
•%: indicates tolerance.
• C : panel designation.
• A : B+ Line.
• H : adjustment for repair.
• Power voltage is dc 1.5 V and fed with regulated dc power
supply from battery terminal.
no mark : PLAY
•Voltages and waveforms are dc with respect to ground in
playback mode.
•Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
E : PB
NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
Caution:
Parts face side: Parts on the parts face side seen from
(Side A) the parts face are indicated.
Pattern face side: Parts on the pattern face side seen from
(Side B) the pattern face are indicated.
For printed wiring boards.
Note:
• X : parts extracted from the component side.
• x : parts extracted from the conductor side.
•
®
: Through hole.
• : Pattern from the side which enables seeing.
6-1. IC BLOCK DIAGRAMS
IC301 TA2123AF (EL)
PRE A
PRE B
MIX
PW B
PW A
PW C
BST
MT TC
BASE
RF IN
PW GND
PW OUT-R
PW OUT-C
PW OUT-L
VCC
RF OUT
REF OUT
BST NF
BST OUT
PW IN C
LPF
EQ-L
PW NF-L PW IN-L
PW IN-R
PW NF-R
3
REV IN-L
5
PRE NF-L
6
PRE OUT-L
7
MTL DRV-L
8
MTL DRV-R
9
PRE OUT-R
10
PRE NF-R
11
AMS IN
12
REV IN-R
4
FWD IN-R
2
FWD IN-L
1
21
20
19
18
17
GND
16
AMS DET
15
AMS MIX
14
AMS SW
13
22
23
24
38
CAMP SW
37
PW SW
42
MT SW
41
F/R SW
44
BST SW
43
M/N SW
46
PRE GND
47
VREF IN
48
PRE SW
45
AMS OUT
40
BEEP
39
262728293031323334
AGC DET
36
AGC IN
35
+
–
+ –
+ –
+ –
+
–
+
–
EQ-R
25
RIPPLE
FILTER
AGC
DET
BEEP
VREF
SWITCH
COMPARATOR
MTL DRV
IC601 MM1279XVBE
V
1
PW
2
W
3
GND
4
OSC
5
DR
6
VREF
7
START
8
VSP
9
IN+
10
PV
20
U
19
PU
18
GND
17
VCC
16
FC
15
TC1
14
TC2
13
R1
12
OUT
11
MOTIVE
CONTROL
CIRCUIT
MOTIVE/
OSC
MOTIVE
LOGIC
SOFT SWITCH
PRE DRIVER
INVERTER
BIAS
REFERENCE
VOLTAGE
SPEED
CONTROL
CURRENT
CONTROL
OUTPUT
BIAS
+
–
SECTION 6
DIAGRAMS
• Waveforms
30 Vp-p
10 µ sec
1.3 Vp-p
30
µ sec
20 mVp-p
1.5 m sec
1V/DIV, 5 µ s/DIV
0.5V/DIV, 10
µ s/DIV
20mV/DIV, 0.5 ms/DIV
1 IC702 4 LX
2 IC701 wk XTO
3 IC601 5 OSC