Sony MD Walkman MZ-E33 Service Manual page 18

• IC Block Diagrams
IC301 BA3577FS-E2 IC552 TLC372CPWR
8 7
20 NC V+
19 NC
RF IN 1 R/F VCC
18 VCC
RF OUT 2 +B
17 +B
BIAS IN
3
16 NF1
BIAS OUT 4
15 OUT1
V IN1 5
1 2
14 GND
V IN2 6
13 OUT2
PWSTB
PWSTB 7 12 NF2
PWSTB T 8
MUTE BEEP
11 BEEP IN
MUTE 9
MUTE T 10
IC601 PD63731GC-9EU
100 99 98 97 96 95 94 93 92 91 90 89 86 87 86 85 84 83 82 81 80 79 78 77 76
ADIP
ADIP
PLL
VDD ADC 1
RF
EFM
VREF
2 PLL
RF 3
FE
FE 4
ABCD
SUBQ/ADIP
DSSP
ABCD 5
DECODER
TE
TE 6
ADIP 7
VRT 4
8 3
FLAG
VRB
9
AC LRCK
AC
VSS ADC 10
AC WDCK SECTOR WDCK
EFM ACIRC
T-COUNT 11
DECODER
DECODER AC BYCK
DEFECT 12
S DATA
AC DATA
OFTRK 13
8 8
VSS 14
16
EFM DATA A/B
NC 15
ECC DATA 8
NC 16
EBA
12
NC 17
WR REQ etc.
8 8
NC 18
5 RD DT ECC 8
NC 19
NC 20
SSB CONTROL
ATDT 16
21 MONITOR I/O etc. 10
TFOUT
XATWE
22
TROUT
DREQ
23
FROUT 8
XBUSY
24
FFOUT
25
CK176
ATRAC CLOCK
DECODER GENERATOR
26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
– 25 –
IC802 AK93C55AV-L
6 5
VPP
CS 1 VREF
GENERATOR
VPP
SW
INSTRUCTION
DECODE
ADD
SK CONTROL
2 DECODER
BUFFERS
AND
CLOCK
V–
GENERATION
3 4
R/W AMPS
AND
INSTRUCTION
DI 3
AUTO ERASE
REGISTER
DATA
REGISTER
DO
4
IC901 MPC1830ADTBEL
GND 1
VRMC
2
BAND GAP
VREF 3
REFERENCE
INM 4
SYSTEM
CONTROL
5
RF
DTC 6
CRST 7
RESET
8
XRST
VBMON 9 VB SELECT
10
VC
OSC1
SPCK0
11 SPCK
75 VDD STEP-UP
12 BUFF
SPCK1
74 DRA3 DC / DC
CONVERTER
73 DRA2
C2L 13
72 DRA1
C1L 14
PWM1
71 DRA0
VB 15
CHARGE MODE
70 DRA4
C1H PUMP SELECT
16
69 DRA5
C2H
17 SAW
68 DRA6
VG
18
67 DRA7 OSC2
66 DRA8
65 DRA10
64 DRA11
63 XRAS
62 DRA9
61 XOE2
IC903 RN5RG20AA-TL
60 XOE
59 XCAS
58 DRD2
3 OUT
57 DRD3
56 VSS
EXT 4
55 XWE2
2 V
DD
54 XWE
53 DRD1
52 DRD0
51 VDD
+
–
V REF
1 GND
CE 5
– 26 –
IC551 MPC17A55FTA
8 VCC
54 53 52 51 50 49 48
PRE DRIVER PRE DRIVER
NC
7
HI–BRIDGE HI–BRIDGE
CONTROL CONTROL
EEPROM
2048bit
F12 55
128 X 16
6 NC
R12 56
F11 57
R11 58
R13 59
F13 60
5 GND R14 61
62
F14
63
OE
ROE
1ntSTB
VC
BIAS
VC
CONTROL
1ntSTB
36 VSTB
VC
REN
35 XWK1
VREG
34 XWK2 64
33
XWK3
VREG
65
32 XWK4 CONT
31 FFCLR
RGND 66
30 SLEEP
29 VBSEL
CLPF
67
28 CLK
27 VB2
26 VB1
25 VBH
VC
24 PGND
68
VC
69
GND
VG
SW VG
23
VG 70
DO or DI
22 PWM1 PWM 71
SLEEP UP/DOWN
DI 72
/POWER SW
21 D1
DECODER
20 D0
19 VCON
VG
STEP UP/DOWN
POWER SW
PRE DRIVER
PRE DRIVER
1 2 3 4 5 6 7 8
IC501 SN761054
IE 1
47 46 45 44 43 42 41 40 39 38 37
IA 2
PRE DRIVER PRE DRIVER
ID
3
HI–BRIDGE HI–BRIDGE
CONTROL CONTROL
IB 4
IF 5
IC 6
1ntOE VJ 7
36 HIU
VI 8
35 HIV
34 HIW
33 P11 PD NI 9
32 P12 PD I 10
PD O 11
VC VC VG
LD DRV 12
31 VPS2
LD EMIT 13
LD VDD 14
30
PO2
VC VC VG
GND
DVDD 15
29
PS
SBUS 16
28 PO1
SCK 17
XREST 18
27
VPS1
VC VC VG
GND
26
DGND 19
3P2
25 HOW
24 VD2
23 HOV
GND
22
3PI
HOU
21
20 VD
VG VG
STEP–UP
PRE DRIVER
19 IN
VC
9 10 11 12 13 14 15 16 17 18
– 27 –
I-V
EF BLANCE/ POWER 38 VREF OUT
EXCHANGE
TRACKING-ERROR
37
FE
I-V
ABCD
EXCHANGE
36 ABCD
ADDITION
POWER 35 AGND
I-V
34 TE
EXCHANGE
FOCUS
-ERROR
I-V POWER 33 AVCC
EXCHANGE
ADIP
RF
I-V
ABCD
EXCHANGE
SIGNAL
FE
32 S MONIT
ADIP MONITOR
I-V
TE
EXCHANGE
REFNV
31 OFC C2
30 OFC C1
RF BUFFER/
29 EQ
EF EQ
28
RFOUT
POWER 27 AGND
26 REXT
APC
ADIP 25 BPFC1
BPF 24 BPFC2
23 ADIP
T-COUNT 22 T-COUNT
REMOTE
CONTROL
21 DFCT
DFCT
VREF OUT
POWER
A GND
MIRROR OFTRK 20 OFTRK
A VCC
A GND
– 28 –