Block Diagram - Sony MD Walkman MZ-E75 Service Manual

6-2. BLOCK DIAGRAM

RF AMP,
FOCUS/TRACKING ERROR AMP
IC501
48 47
I I
1 RFO AGCI
RF AGC
RF AMP 46 40
J J
& EQ
2
EQ
B.P.F.
WBL
3T TEMP
F
PEAK &
B
BOTTOM
WBL
C B
I J
ADFM ADIN
D A
AT
B.P.F. 29 30
A AMP
A
4
B
5 I-V
E ABCD
C
6 AMP
AMP
DETECTOR D
7
FOCUS
C
ERROR AMP
D
E E
8
I-V TRACKING
F F
9 AMP ERROR AMP
LASER DIODE
COMMAND
AUTOMATIC
APC
ILCC POWER LD/PD
11
CONTROL AMP
SERIAL/
Q502
PD LD
PARALLEL
V-I
CONVERTER,
BGR
CONVERTER DECODER
LASER ON
PD PD
SWITCH 10
Q501, 503
12 20 19 16 17 18
OPTICAL PICK-UP
(ODX-1B)
SLED MOTOR
CONTROL UNREG B+
Q551,552
TRACKING
VOLTAGE SPINDLE
P02 DC/DC P12
SWITCH
MONITOR 30 32
DRIVE
IC502 IC506
P01 DC/DC P11
28 33 2
DRIVE
HIU
36
5
40 52 20 24
7
2-AXIS
DEVICE
TRK+ F03 F13 TFDR
TRACKING
43 60
COIL TRDR
R03 R13
45 59
DRIVE
F01 F11 FFDR
FOCUS
TRK– 49 57
COIL FRDR
R01 R11
FCS+ 47 58
DRIVE
FCS–
F02 SLED F12 SLDU
53 55
R02 MOTOR R12 SLDV
51 56
DRIVE1
F04 SLED F14 SLDW
39 62
M902
M R04 MOTOR R14 SLCW
(SLED) 41 61
DRIVE2
HOU
7
21 SPINDLE
HOV HIV SPDV
23 MOTOR 35 2
HOW HIW SPDW
25 DRIVE 34 5
U V OE
1NOTE
63
SLED SLED SLEEP UP/DOWN PWM
W 71
VOLTAGE VOLTAGE /POWER SW
D1
72
MONITOR MONITOR DECODER
IC552(1/2) IC552(2/2)
18 17 16
M901 FOCUS/TRACKING COIL DRIVE,
(SPINDLE) SPINDLE/SLED MOTOR DRIVE
IC551
02
– 13 –
81 FILI
80 PCO
83 CLTV
82 FILO
RF
38 78 RFI
DIGITAL SIGNAL PROCESSOR,
DIGITAL SERVO SIGNAL PROCESSOR,
EFM/ACIRC ENCODER/DECODER,
SHOCK PROOF MEMORY CONTROLLER,
ATRAC ENCODER/DECODER,
AUX
33
D/A CONVERTER, /16M BIT D-RAM
74 ASYO
IC601
PEAK
37 75 ASYI
BOTM
36
ADFG
32 99 ADFG
ABCD
AUX1
35 88
84 PEAK
FE
34 85 BOTM
86 ABCD
87 FE
TE
26 96 TE
SE
SE
28 95
XLAT
103 XLRF
SCLK
104 CKRF
SWDT
105 DTRF
102 F0CNT
117 SPRD
118 SPFD
13 16 11 10
106 APCREF
110 TFDR
109 TRDR
111 FEDR
112 FRDR
SRDR
114
FS4 113
SFDR
115
BYPS
142
SLVS
141
SPVS
124
133 SLDU
27 28 52 65
1 134 SLDV
SLDW SLCU SLD 1 MON
6 135 138 38
SLCW
140 SLCV 139 39 SLD 2 MON
3
U0 U0
127 SPDU SPCU 130 45 CLV U MON
V0 V0
128 SPDV SPCV 131 46 CLV V MON
W0 W0
129 SPDW SPCW 132 47 CLV W MON
CLV VCON
42
XRFSW
24
37 LD ON
1 THOLD
53 SPDL SW
SPINDLE
3 SWITCH
TAP805
IC507
1 TEST
OPEN : NORMAL MODE
6
SHORT : TEST MODE
AOUTR 27
AOUTL 24
34
DOUT
DATAI 38
DADT 42
XRCK 45
LRCK
43
FS256
46
OSCI 19 X601
22.5792MHz
OSCO 20
XOE 71
XWE 72
EEPROM
XRAS 60
IC802
XCAS 63
7 1 2 3 4
6 7 8 2 3 4 5 12
66 64 67 56 57 58 59 9 76 75 74 73 5
BEEP 60
HP MUTE 70
HP STBY 71
RMC KEY 7
RMC DTCK 63
SYSTEM CONTROL
RMC VCON 34
IC801
SLEEP 68
OPEN CLS SW 6
XWK CLR 69
V28 CON
44
33 31 23 51 29 30 17 16 8
D801
OPERATE
X801
S804-808
S802 S803 S301 16.9344MHz
HOLD AVLS
DIGITAL SOUND PRESET
OFF HOLD NORM LIMIT OFF 1 2
– 14 –
J302
2 2
HEADPHONE AMP
IC301
VIN R R OUT
21 4
VIN L L OUT
22 2
GND
BEEP OUTA
J301
24
BEEP IN KEY
15 BEEP
BEEP OUTB 2 1
23
DATA
VDD
17 18 13 B+
REFERENCE
VOLTAGE
SWITCHING
Q301
+2.2V
B+
REGULATOR
(+2.2V)
IC503
SYSTEM CONTROLLER
(IC801) B+
+2V
(FOR A/D CONVERTER) B+
B+ SWITCH
REGULATOR
(+2V)
Q902 IC504
B+ SWITCH
VG B+
Q901
REMOTE
VC
COMMANDER
10
B+
DC/DC
CONVERTER
D903 IC902
Q903
VSTB
36
XRST
RESET
8
XWK3
33
CLK
28
SLEEP
30
XWK2
34
XWK1
35
FFCLR
31
S801
(OPEN/CLOSE)
C2L
13
C2H
17
C1L
14
C1H
OSC1
16
STEP-UP
VG
DC/DC
VG B+ 18
CONVERTER
INM
4 COMPARATOR
23
D901
– 15 –
MZ-E75
POWER SUPPLY
IC901
DRY BATTERY
SIZE " AA "
(IEC DESIGNATION LR6)
UNREG B+
1PC, 1.5V
VBH
DC IN 1.5V
25
+
–
VB1
26
MODE D1
21
SELECT
PWM1
PWM1 22
(EXTERNAL BATTERY CASE)
SW
RECHAGEABLE BATTERY
NH-14WM
1PC, 1.2V
• Signal path.
J
: PLAY