Sony MD Walkman MZ-E44, Service Manual

Page: 18 / 24

– 27 – – 28 – – 25 – – 26 –
MZ-E44/E45
r IC Block Diagrams
IC301 BA3577FS-E2
IC552 TLC372CPWR
IC601
µ
PD63731GC-9EU
MUTE BEEP
20
19
18
17
16
15
14
12
11
13
2
1
3
4
5
6
7
8
9
10
R/F
NC
NC
VCC
VCC
+B
+B
NF1
OUT1
GND
OUT2
NF2
BEEP IN
RF IN
RF OUT
BIAS IN
BIAS OUT
V IN1
V IN2
PWSTB
PWSTB T
MUTE
MUTE T
PWSTB
2 3
5
4
6 7 8
1
V+
V–
21
22
23
24
25
26 27 28 29 30
2
3
5
4
6
7
8
9
10
1
11
12
13
14
15
16
17
18
19
20
31 32 33 34 35 36 37 38 39 40
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
41 42 43 44 45 46 47 48 49 50
71
72
73
74
75
76 77 78 79 80 81 82 83 84 85 86 87 86 89 90 100 91 92 93 94 95 97 96 98 99
ADC
ADIP
RF
FE
ABCD
TE
DSSP
ADIP
PLL
EFM
PLL
SUBQ/ADIP
DECODER
EFM ACIRC
DECODER
SECTOR
DECODER
SSB CONTROL
MONITOR I/O etc.
DRAM & PERIPHERAL CONTROL ADDRESS GENERA
TOR
AC
WDCK
S DATA
8
8
16
16
8
8
12
10
CLOCK
GENERATOR
ATRAC
DECODER
FLAG
AC LRCK
AC WDCK
AC BYCK
AC DATA
EFM DATA A/B
ECC DATA
EBA
WR REQ etc.
RD DT ECC
ATDT
XATWE
DREQ
XBUSY
5
8
8
SBD SBA SBW SBR
SQREQ
2nd MSB
EFM
PLCK
3
4
8
VDD ADC
VREF
RF
FE
ABCD
TE
ADIP
VRT
VRB
VSS ADC
T-COUNT
DEFECT
OFTRK
VSS
NC
NC
NC
NC
NC
NC
TFOUT
TROUT
FROUT
FFOUT
CK176
VDD
DRA3
DRA2
DRA1
DRA0
DRA4
DRA5
DRA6
DRA7
DRA8
DRA10
DRA11
XRAS
DRA9
XOE2
XOE
XCAS
DRD2
DRD3
VSS
XWE2
XWE
DRD1
DRD0
VDD
NC NC
MC
VDD
RESET
SBUS
SCK SINT
XBUSY
NC NC
VDD EMP
LRCK
AUDA
TA
BCK VSS
DOUT
PMCK MCK/2
VSS
MCK I-O
X1 X0
MCK
ID0 ID1 ID2 ID3 FOK FON ERFLAG CRCF TEST ADIP–DA
TA
ADPLCK EFM PLCK VDD MO3 MO2 MO1 MO0 MOCK MICK MI3 MI2 MI1 MI0 VSS
IC802 AK93C55AV-L IC551 MPC17A55FTA
IC901 MPC1830ADTBEL
21
22
23
24
25
26
27
28
29
30
2 3 5 4 6 7 8 9 10 1 11 12 13 14 15 16 17 18
19
20
31
32
33
34
35
36
37 38 39 40 51 52 53 54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
41 42 43 44 45 46 47 48 49 50
71
72
PRE DRIVER PRE DRIVER PRE DRIVER PRE DRIVER
HI–BRIDGE
CONTROL
HI–BRIDGE
CONTROL
HI–BRIDGE
CONTROL
HI–BRIDGE
CONTROL
BIAS
CONTROL
SLEEP UP/DOWN
/POWER SW
DECODER
POWER SW
PRE DRIVER
STEP UP/DOWN
PRE DRIVER
STEP–UP
PRE DRIVER
PRE DRIVER
3 PHASE CONTROL
PRE
DRIVER
PWM
DRIVER
PRE
DRIVER
PWM
DRIVER
VC
VC
VG
VC
VC
VG
VC
VC
VG
VC
VC
VG
VC VC VG
VC VC VG
VC VC VG
VC
VG
VG VG
VG
VG
VC
VC
VC
VC
REN
ROE
1ntSTB
1ntSTB
1ntOE
DO or DI
F12
R12
F11
R11
R13
F13
R14
F14
OE
VREG
VREG
CONT
CLPF
RGND
VC
GND
VG
PWM
DI
DO
VB1 VB1
VB VB
VB2
LI LI
UO VO
WO
VD VD
L2H L2L GND
DCC2
GND
DCC1
GND
DCC1
HIU
HIV
HIW
P11
P12
VPS2
PO2
GND
PS
PO1
VPS1
GND
3P2
HOW
VD2
HOV
GND
3PI
HOU
VD
IN
GND H2 FO2 VM2 RO2 GND H12 FO1 VM1 RO1 GND H13 FO3 VM3 RO3 GND H34 FO4 GND H4 VC VM4 RO4
INSTRUCTION
DECODE
CONTROL
AND
CLOCK
GENERATION
INSTRUCTION
REGISTER
ADD
BUFFERS
DATA
REGISTER
R/W AMPS
AND
AUTO ERASE
DECODER
VPP
SW
VREF
VPP
GENERATOR
EEPROM
2048bit
128 X 16
2
3
5 4
6
7
8 1 VCC
NC
NC
GND
CS
SK
DI
DO
21
22
23
24
25
26
27
28
29
30
2
3
5
4
6
7
8
9
10
1
11
12
13
14
15
16
17
18
19
20
31
32
33
34
35
36
GND
VRMC
VREF
INM
RF
DTC
CRST
XRST
VBMON
VC
SPCK1
SPCK0
C2L
C1L
VB
C1H
C2H
VG
BAND GAP
REFERENCE
RESET
VB SELECT
SPCK
BUFF
CHARGE
PUMP
VSTB
VBH
SYSTEM
CONTROL
OSC1
STEP-UP
DC / DC
CONVERTER
PWM1
MODE
SELECT
SAW
OSC2
XWK1
XWK2
XWK3
XWK4
FFCLR
SLEEP
VBSEL
CLK
VB2
VB1
PGND
SW
PWM1
D0
D1
VCON
SECTION 7
EXPLODED VIEWS
NOTE :
• -XX, -X mean standardized parts, so they
may have some difference from the original
one.
• Color indication of Appearance Parts
Example :
KNOB, BALANCE (WHITE) ••• (RED)
↑ ↑
Parts color Cabinet's color
• Items marked “ * ”are not stocked since they
are seldom required for routine service. Some
delay should be anticipated when ordering
these items.
• The mechanical parts with no reference
number in the exploded views are not
supplied.
• Accessories and packing materials are given
in the last of this parts list.
Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark
7-1. PANEL SECTION
The components identified by mark !
or dotted line with mark ! are critical
for safety.
Replace only with part number specified.
1 4-963-883-21 SCREW (M1.4), PRECISION PAN (SILVER)
(MZ-E44)
1 4-963-883-31 SCREW (M1.4), PRECISION PAN
(MZ-E44:BLUE, MZ-E45:ORANGE, GRAY)
3 X-4951-601-1 PANEL ASSY, UPPER (SILVER) (MZ-E44)
3 X-4951-601-2 PANEL ASSY, UPPER (BLUE) (MZ-E44)
3 X-4951-601-3 PANEL ASSY, UPPER (GRAY) (MZ-E45)
3 X-4951-601-4 PANEL ASSY, UPPER (ORANGE) (MZ-E45)
4 4-963-883-81 SCREW (M1.4), PRECISION PAN
5 X-4950-237-1 PANEL ASSY, FRONT
6 X-4950-236-1 BELT ASSY
7 X-4950-235-1 PANEL ASSY, BOTTOM (SILVER) (MZ-E44)
7 X-4950-239-1 PANEL ASSY, BOTTOM (BLUE) (MZ-E44)
7 X-4950-240-1 PANEL ASSY, BOTTOM (GRAY) (MZ-E45)
7 X-4950-241-1 PANEL ASSY, BOTTOM (ORANGE) (MZ-E45)
1
1
1
1
1
1
3
3
4
5
6
7
MZ-E44
MZ-E45