Sony CD Walkman D-E551 User manual

MICROFILM
COMPACT DISC COMPACT PLAYER
US Model
D-E551/E555/E556CK
AEP Model
UK Model
D-E555/E556CK
SPECIFICATIONS
D-E551/E555/E556CK
Model Name Using Similar Mechanism D-E700/E705
CD Mechanism Type CDM-2911EBA
Optical Pick-Up Name DAX-11E
SERVICE MANUAL
Ver 1.0 1999. 02

D-E551/E555/E556CK
– 25 – – 26 – – 27 – – 28 –
6-5. SCHEMATIC DIAGRAM • See page 21 forWaveforms. •See page 29 for IC Block Diagrams.
Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ωand 1/4W or less unless otherwise
specified.
•¢: internal component.
•U: B+ Line.
•H: adjustment for repair.
• Powervoltageis dc 4.5V and fed withregulateddcpower
supply from external power voltage jack.
• Voltages and waveforms are dc with respect to ground
under conditions in service mode.
no mark :CD PLAY
∗: Impossible to measure
• Voltagesaretakenwith a VOM(Inputimpedance10MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
J: CD PLAY (ANALOG OUT)
c: CD PLAY (OPTICAL OUT)
• Abbreviation
FR : French model
Note: The components identified by mark !or dotted line
with mark !are critical for safety.
Replace only with part number specified.

D-E551/E555/E556CK
– 29 – – 30 – – 31 – – 32 –
OFFSET
ADJO TIMING
GENERATOR ERROR CORECTION
INTERPOLATION
SUB CODE
FOCUS
FILTER
FOCUS
CONTROL
PLL
80 79 78 77 75 72 71 6776 74 73 70 69 68 66 65 64 61
60
59
58
56
55
54
53
53
50
49
48
47
46
44
43
42
41
63 62
57
MICRO
COMPUTER
INTERFACE
45
1
2
3
5
6
7
8
9
10
11
12
13
15
17
20
4
14
23 26 29 30 3425 27 28 31 32 35 36 37 40
38 39
24
18
SLED
19
16
TRACKING
FILTER
SUB CODE
16K SRAM
WINDOW
EFM
CLV SERVO
TRACK
JUMP
33
BUBCK
SUBDATA
SUBSYQ
WECK
RFCK
DGND
MIRROR
SCRATCH
MUTE2 MUTE1
CLVOPO CLVOPN
CLVOPP
TEST4 TEST3
CLVOUT
SDOUT
SDIN
TDOUT FDOUT
21 22
TEST2
TCAPA
TZC
ATS
TEIN
OFN
FFCAPA
FEIN
FOK
RVCO
AGND
ADPFD
ADPFI
VC
TEST1
PCO
PCI
EYE
ASY
AVDD C1FX
C2FX
C3FX
C4FX
GAINUP
CK176
BUSY
RW
DOUT
DIN
MCK
C2F2 C2F1 C1F2 C1F1 C2CLK C2F DE LRCK DOUTA DCK
CLK DGND RESET SYSCKI
GFS
GFS
SENS
XPLCK
COMPC
• IC Block Diagrams
IC301 TC9438FNEL
IC302 TA2120FN (EL)
IC401 MPC18A26VMEL IC501 BA6386K IC502 BU9325BKS
IC601 SM5902AF
DATA
INTERFACE
CIRCUIT
MICRO COMPUTER
INTERFACE
CIRCUIT OSC
20
TIMING
GENERATOR
DINAMIC
BASS BOOST
CIRCUIT DIGITAL FILTER CIRCUIT
DEEMPHASIS FILTER CIRCUIT
ATTENUATOR OPERATIONAL CIRCUIT
∑-∆MODULATION CIRCUIT
OUTPUT
CIRCUIT
ANALOG
FILTER
TEST
CIRCUIT
OUTPUT
CIRCUIT
ANALOG
FILTER
24 23 22 21 17 16 15 14 19 18
34 8 10 11 12 1 2 6 7
59
LRCK BCK DATA DBB2
(DBB1)
ATT (EMP)
SHIFT (SM) LATCH VDX XO XI GNDX MCK
13
VDD T1 VDA RO GNDA VR
P/S GNDA LO VDA ZD GNDD
+ –
+ –
+ –
23 20 19 18 17 16 15 14 13
234 5 678910 11 12
1
24
BIAS BEEP
PW
SW MT SW
ALC
DET
ATT
SW
PWC
SW
OUT B OUT A
BEEP
IN
BST
PW
BPW
C
BST
NF ADD OUT RF IN PWC SW OUT B OUT C OUT A PWR GND MIX OUT ALC IN ALC DET
ATT
SW
IN AIN BGND
MT
TC
MT
SW
PW
SW
BIAS
BIAS
IN
BST
SW
BST
OUT
VCC
ADD
A
ADD B
21
22
PW
A
ALC ALC
+
–
1
7
8
9
36
34
28
23
21
20
ERROR AMP
CHARGESW
CHARGE
AMP
DCIN DETECT 35
33
ERROR AMP
PWM2
2
3
4
5
10 PWM1
32
31
30
SYSTEM
CONTROL
OSC2
LOW VCPU
DETECT
12
13
14
15
16
17
18
VCPU
22
BANDGAP
REFERENCE
STEP-UP
DC-DC
CONVERTER
REGULATOR
SAWTOOTH
PWM4
SUB
REFERENCE
11
VG
VG
VG
VG
VG
27
29
26
25
24
19
INM3
RF3
DCIN
CHGSW
BATM
CHGOUT
VIN
VOUT2
NC
VOUTB1
VOUT1
UPCKB1
UPCK1
VG
VDO
SW
VCPU
GND
RS
DCDTB
RF2
INM2
INP2
DTC3
RF1
INM1
INP1
CMP1
DTC1
VREF
SWEN
RSTB
CKOUT
SYNC
PCB
CHGON
6
DET BLOCK
PS PL BL BS
+
–
+
–
+
–
+ –
+ –
+ –
+
15
FOCUS
SWITCH
SCRATCH
CONTROL
RAMP
OSC
+
–
12
16
+
–
24
+
–
25
26
27
28
+ –
2122
23 20 19 17
+
–
+
–
31
30
+ –
29
8
6
11
9
5 7
+
–
4
3
10
1
32
FOCUS BIAS
18
EFM
MIRR
DEFECT
13 FEO
FOK
FON
TEO
DFR
SROCH
PD
LD
CAPC
CAGC
GND
F
E
EI
FE
VC
FBIAS
A
D
B
C
RF- RFO RFI VCC PLH BLT RAGC ASY
14
HOLD BLOCK
LOOP ON
2
–
ENCODER
GENERAL
PORT INPUT
CONTROL 1
10
DRAM 1/F
DECODER
MICRO
COMPUTER
1/F
ATTENUATOR
INPUT
BUFFER INPUT
1/F
OUTPUT
1/F
INPUT
CONTROL 2
811
22
34
35
36
37
38
39
40
41
42
43
44
33 32 31 30 29 28 27 23
24
25
26
7
20
21
14
16
15
17
19
18
12
13
2
13456
COMPRESSION
MODE
THROUGH
MODE
NWE D1
D0 D3 D2 NCAS
A10/NCAS2
NRAS
A9
A8
A7
A6
A5
A4
A0
A1
A2
A3
VDD2
UC1
UC2 UC3 UC4
UC5
DIT
NTEST
CLK
VSS
YSRDATA
VDD1
ZSENSE
NRESET
YBLKCK
YFCLK
YFLAG
ZSRDATA
ZLRCK
ZSCK
YSCK
YLRCK
YDMUTE YMLD
YMDATA
YMCLK
9

– 33 –
IC504 MPC17A51VMEL
CHAGE
PUMP
CLK
VG
C2H
C1H
C1L
C2L
VCG
MOTOR
DRIVER
CH3
CF3
ERR3
VR
OE
OUT3A
OUT3B
MOTOR
DRIVER
CH4
SAWTOOTH
CF4
ERR4
VR
OE
OUT4A
PGND4
OUT4B
2
1
36
35
34
33
34
SAW
GEN
CLK
SAWTOOTH
VLG
VIN12
VCG
VG
5
6
4
7
10
11
9
VLG VG VIN12
VIN34
VLG VG VIN12
VLG VG VIN34
14
12
13
8
15
16
17
24
22
21
27
25
20
MOTOR
DRIVER
CH1
CF1
ERR1
PGND1
VR
OE OUT1A
OUT1B
VLG VG VIN12
LOW
VOLTAGE
DETECTOR
VLG
AGND PSB
18
19
23
26
31
28
29
PSB
SAWTOOTH PSB
SAWTOOTH PSB
PGND3
3
30
C2H
C1H
C1L
C2L
VIN34
OUT3A
PGND3
OUT3B
OUT4B
PGND4
OUT4A
VIN34
CF4
ERR4
ERR3
CF3
AGND
VG
DGNG
CLK
OE
VLG
VIN12
OUT1A
PGND1
OUT1B
OUT2B
PGND2
OUT2A
VIN12
CF2
ERR2
ERR1
CF1
VR
MOTOR
DRIVER
CH2
SAWTOOTH
CF2
ERR2
PGND2
VR
OE
OUT2A
OUT2B
PSB