Sony Walkman D-EJ250, Service Manual

Page: 8 / 26

8 8
D-EJ250
5-1. BLOCK DIAGRAM
SECTION 5
DIAGRAMS
13
16 17
5
3
16 1
12
14 29
34
5
9
8
6
7
88
75 74 77 76 79 78 72 73 71 50 49 47 53 37 38
30
74
12
22
6 71 13 7 11 77
2
79
78
65 70 64 52 43 45
14
16
17
18
66
39
40
38
37
8 35
36
34
72
70
57
58
55
56
59
60
44
CH3
H
BRIDGE
42
48
46
LEVEL
SHIFTER
LEVEL
SHIFTER
I/F
CH2
H
BRIDGE
52
50
CH1
H
BRIDGE
6
2
53
49
45
41
1
CH4
H
BRIDGE
EFM
DEMODULATOR
SERVO
RF
AMP
A/D
OP IC
PWM
FDOP PD
LD
FDON TDOP TDON SDOP SDON CLVON CLVOP CLKDRV
FIN+
FIN-
TIN+
TIN-
SIN+
SIN-
SLVOP
CPOL
SYNC
FIN+ FIN-
TIN+
TIN- SIN-
SIN+
CPOL
CLVOP
SYNC
XOUT XIN CLK4M
44
XRST SCLK SDIN SDOUT POFF SCOR XBUSY_O DEFDCT_O GFS FO_O
CLOCK
OSC
DAC
SIO
DEFFERENTIAL
Q407
27
67
65
19
17
18
20
22
16
23
68
12
69
64
8
25
SWITCH
Q402, 403
26
5 23 4 2,3,24,25 9-12,15-19,21,8
87,88,84,85 97-100,96-91,82
SUB CODE
PROCESSOR
25 23 28 40 56-42 60-57
+VBAT
L403
31
38
LCD801
LIQUID
CRYSTAL
DISPLAY
KEY MATRIX
XIN
POFF_O
15
48
SRW_I
SRW_O SCOR_I
XBUSY_I
DEFECT_I
BEEP_O
AMUTE_O
HPSW_O
WP/AD_RMKEY
GFS_I FOK_I
XPOWLT_O
72 FG I
SDTI_I
SDTO_O
SCK_O
XWAKEUP_O
XREST_I
76
XRST_O
SEG0 I SEG14 COM0 I COM3
WP/AD_KEY_1 AD_KEY_2 WP/XOPEN
HOLD_I VOL-_IN AVCPU
WP/AD_DCINMNT
AD_CHGMNT
AD_BATMNT
VCC1_2.2V
VCC2_2.0V
VCPU_2.0V
OPGSW_O
XOPSTBY_O
D802
19
ADVREF
20
VCPU_2.0V
IC801
SYSTEM
CONTROL
MICOM
L404
Q404
Q406
D405
D402
L401
L402
+V BAT
VCC2_2.0V
VCC1_2.2V
VCPU_1.5V
Q401
VCC2
VCC
SEM
SEO
VCC0
STNG
LG
VIN
BATM1
BATM2
DCIN_S
+VBAT
CHARGE
SWITCH
VCC1
VCPU 2.0V
CHGMNT
24 66 VMMNT
61 DCIN
62 REGB
63 DET
CHGB
X601
16.934MHz
DVDDIO
VCHK
AVDD2 2.25V
DVDDV 1.5V
RDACO
LDACO LOUT
ROUT
LIN
RIN
MUTE BEEP
8
VCC1
10
VCC2
IC302
HEADPHONE AMP
IC403 (2/2)
POWER CONTROL
VCPU_2.0V
RFI
A
VCC1_2.2V
B
E
FO3
RO3
FO2
RO2
FO1
RO1
W
U
V V
COM COM
VM1
VM12
VM23
VM3
SPVCC1
F
VMON
FIN3
RIN3
FIN1
RIN1
FIN2
RIN2
BRK
PWM
LATCH
DATA
CLOXK
WAKEUP
RESET_O
XRST
SYNC
74 FG
IC403 (1/2)
FOCUS/TRACKING COIL DRIVE
SLED/SPINDLE MOTOR DRIVE
IC603
D-RAM(16M)
XRAS XCAS XWE
XRAS
A0-A10
D0-D3
DETI
RFGO XCAS
XWE
D0-3 A0-10
90 83 89
IC601
RF AMP,SERVO
DIGITAL SIGNAL PROCESSOR
D-RAM CONTROLLER
D/A CONVERTER
J401
DC IN 4.5V
!
DRY BATTERY
SIZE "AA"
(IEC DESIGNATION LR6)
2PCS, 3V
J302
i
/ LINE OUT
M
M902
SLED
MOTOR
FOCUS
COIL
M901
SPINDLE
MOTOR
M
TRACKING
COIL
F+
F-
T+
T-
S+
S-
W
U
OPTICAL
PICK-UP
BLOCK
(DAX-25E)
VCC
RF
A
B
E
F
LD
PD
OPGSW
OPSTB
LD
DRIVER
Q601
VCC1_2.2V
S809
(OPEN)
S810 S802
VOL+
4
80
40
51
36
80
86
APC
2
3
NC
35
MUTE
D305
D304
D407
VCPU_1.5V
35
VOL+_IN
S803
VOL-
S1005
|
S1007
S1001
|
S1004
68
67
4 TEST
PGM_SDTO_O
PGM_SDTI_I
73
69 PGM_SCK_O
< PGMSEL_O >/SC_SEL_O
RESET2
TEST
CONNECTOR
PGM_SDTO
TEST
VCPU_2.0V
PGM_SDTI
PGM_SCK
PGM_SEL
1
2
3
4
5
6
7
9
CLK4M
RESET2
CLK4M
VCC2_
2.0V
5 SPVCC2
CN801
+B SWITCH
Q302,303
11 VCC3
DELAY
Q301
D308
HOLD
.
OFF ON t
• Signal path.
E : CD PLAY