Sony DAV-EA20 / HCD-EA20 Service Manual ▷ View online
29
29
HCD-EA20
6-2. BLOCK DIAGRAMS – RF/SERVO SECTION –
• SIGNAL PATH
: CD
: DVD
: VIDEO
: AUDIO
DETECTOR
1
63
3
4
5
6
9
10
11
12
14
15
16
13
18
17
62
61
53
52
54
55
59
60
DVDRFP
RFSIN
A2
B2
C2
D2
CD E
CD F
A
B
C
D
C
D
B
A
D
D
C
B
A
D
D
C
CD A
CD B
CD C
CD C
CD D
CDLD
CDPD
DVDLD
V125
DVDPD
ATOP
ATON
FNP
FNN
AIP
AIN
DIP
DIN
57
27
40
39
47
46
48
IC001
CD/DVD/SACD RF AMP,
FOCUS/TRACKING ERROR AMP
OPTICAL PICK-UP
BLOCK
(DBU-1)
2AXIS
DEVICE
FOCUS/
FOCUS/
TRACKING
COIL
22
24
21
23
36
48
37
1
Q001
AUTOMATIC POWER
CONTROL (FOR DVD)
Q002
AUTOMATIC POWER
CONTROL (FOR CD)
Q901
LASER DIODE
SELECT
LASER
DIODE
(FOR CD)
LASER
DIODE
(FOR DVD)
FOCUS COIL
DRIVE
34
3
35
4
TRACKING COIL
DRIVE
32
31
33
34
20
22
19
8
40
41
39
43
31
32
29
30
SLED MOTOR
DRIVE
IC501
FOCUS/TRACKING COIL DRIVER,
SPINDLE, SLED MOTOR DRIVER
27
28
SPINDLE MOTOR
DRIVE
M
M
(SPINDLE)
19
47
46
45
FFDR
FRDR
TFDR
TRDR
SFDR
SRDR
SLED_A
SLED_B
SLED
26
SE
TE
FE
RFDC
IC509
CD DECODER,
DIGITAL SERVO PROCESSOR
MIRR
FF
FR
FOK
COUT
SCLK
RF
A
B
C
D
F
E
CD LD
PD
DVD LD
FCS+
FCS–
TRK+
TRK–
SW
INLIM
D
C
B
A
RFAC
MIRR
DATA_RF
CLK_RF
SDEN
TE
FE
PI
TE
FE
PI
PI
FE
TE
SDATA
SCLK
SDEN
LDON
FCS_JMP_2
FCS_JMP_1
50 RFAC
30
29
SLED MOTOR
DRIVE
M
M
(SLED)
40
42
36
42
MNTR
BUFFER
MUTE12
20
MUTE34
21
MUTE5
22
TSD-M
13
7
10
43
FG
62
MUTE_2D
60
SP_ON
63
TSD-M
73
39
POWER SAVE
A8
97
BUFFER
IC901 (1/2)
MECHANISM
CONTROLLER
61
7
LDON
28
INLIM
LDSEL
76
31
SDEN
2
FE
67
PI
66
COUT_CD
30
SDA
5
SCL
6
WP
7
15
SCOR
66
PCMD
67
BCK
65
LRCK
14
C2PO
17
WDCK
10
WFCK
80
EXCK
79
SBSO
BCLK
LRCK
C2PO
GSCOR
WFCK
EXCK
27M
SBSO
25
MDP
SCOR
SCOR
26
24
LOCK
LOCK_CD
75
13
GFS
GFS_CD
71
3
MUTE
MUTE_CD
59
7
SENS
SENS_CD
9
76
SQSO
SQSO
52
SCLK_CD
72
4
DATA
DATA_CD
49
63
MD2
71
XTAI
DOCTRL/
ISBTEST
ISBTEST
3
77
SQCK
85
XRD
XRD
17
58
GFS_DVD
GFS
107
45
109
SCK_DSD
APE0
64
JIT
84
XWR
XWR
18
12
XCS_DVD
XCS
19
25
XRST_1882
XRST
164
22
INIT0_DVD
XINT0
20
23
INIT1_DVD
XINT1
21
SQCK
54
2
XRST
XDRST
98
6
CLOK
CLOK_CD
50
5
XLAT
LAT_CD
27
FOK_CD
74
MIRR
29
TE
65
SDCLK_RF
82
SDATA_RF
83
44
38
42
VC
CE
26 SSTP
AVC
(1.65V)
MIRR
MIRR
DATA_RF
CLK_RF
SDEN
TE
FE
PI
26
HDB8
48
XHWR
46
HDRQ
53
XHAC
92
MNT1
17 WE
76
XMWR
33 OE
94
XMOE
18 RAS
78
XRAS
34 UCAS
95
XCAS
117 RFIN
135 SPO
137 MDIN2
170 XTL1
169 XTL2
167 XTAL
IC701
DVD DECODER
IC706
16Mbit
D-RAM
160 MDAT
158 BCLK
163 LRCK
155 C2PO
146 GSCOR
163 LRCK
155 C2PO
146 GSCOR
HDB0 – HDB7
MDB0 – MDB9,
MDBA – MDBF
I/O0 – I/O15
A0 – A9
151 WFCK
147 EXCK
148 SBIN
BCLK
LRCK
C2PO
GSCOR
WFCK
EXCK
SCOR
SBSO
150 SCOR
IC703 (2/2)
BUFFER
IC703 (1/2)
COMPARATOR
IC906
CLOCK
GENERATOR
66-69, 71, 73-75, 96, 97,
99, 101, 102, 104-106
2-5, 7-10,
41-44, 46-49
44, 41, 39, 35,
32, 30, 27, 24
21-24,
27-32
MA0 – MA9
79, 80, 82-87,
89, 91
35 LCAS
TF
8
TR
FF
FR
FF
FR
TF
TR
7
8
XTI
XTO
D0 – D7
D0 – D7
10
SO2
13
3
SO3
MO1
X902
27MHz
14-21
172-176, 1, 2, 4
A0 – A7
A0 – A7
89-96
5, 7, 9-14
VIDEO
SECTION
VIDEO
SECTION
VIDEO
SECTION
VIDEO
SECTION
SD0 – SD7
A
XSRQ-ZIVA
D
C
27M
XDCK, XSAK, SDEF
XDCK
XSAK
SDEF
B
5
SDA_EEP
99
SCL_EEP 100
WP_EEP
6
MNT1
IC903
EEPROM
IC503
AMP
8
Ver 1.2
30
30
HCD-EA20
– VIDEO SECTION –
• SIGNAL PATH
: VIDEO
: Y
: CHROMA
: AUDIO
: TUNER
IC207
DVD SYSTEM PROCESSOR
125
VDAC_2
131
VDAC_0
Q251, 252
WIDE SWITCH
183 SDCLK
179 SDEN
182 SDERROR
192 INT/EXT
151 DATA1(FLR)
152 DATA2(SLR)
153 DATA3(CSW)
147 XCK
148 LRCK
149 BCK
150 DATA0(DM)
SDEF#
XDCK#
XDCK#
XSAK#
SDEF#
XDCK#
XDCK#
XSAK#
178 SDREQ
XSRQ_ZIVA
SDDATA0 – SDDATA7
177-174, 171-168
SD0
AV0
AV1
AV2
AV3
AV4
AV5
AV6
AV7
SD1
SD2
SD3
SD4
SD5
SD6
SD7
ADC_DATA
BCK
LRCK
BCK-ZIVA
DATA1
DATA2
DATA3
DATA3
LRCK-ZIVA
XCK
XSAK
SDEF
XDCK
A
RF SERVO
SECTION
RF SERVO
SECTION
B
D
139 XIN
27M
C
202 RESET
110 MREQ
SYS RESET, MUTE REQ
SYS RESET
G
I2CDATA, I2CCLK
I
AMP
SECTION
AUDIO
SECTION
AMP
SECTION
RE SERVO
SECTION
RE SERVO
SECTION
144 MC
143 MDI
145 ML
MC
MDI
ML
MDI, MC, ML
H
AUDIO
SECTION
AUDIO
SECTION
F
I2CCLK
I2CDATA
128
190
VDAC_1
J102(1/2)
IC151
VIDEO INPUT
SELECTOR
1 IN1
7
2 4
OUT
SW1
SW2
5 IN3
IC204
EEPROM
IC901 (2/2)
MECHANISM CONTROLLER
Q202
5 DI
6 DO
1 8
R/B
WC
3
CS
4 SK
IC106
VIDEO SELECTOR
1 1B
9 3B
3
12 7
OUT1
CT2
CT3
14 2B
6
OUT3
5
OUT2
2
CT1
IC252
VIDEO AMP, 75
Ω DRIVER
J101 (1/2)
J251
4 VIN
3
MUTE1
31
VOUTB
30
VOUTA
2 CIN
6 YIN
33
COUT
28
YOUTB
27
YOUTA
VOUT
AV SEL1
AV SEL0
AV SEL2
15
MUTE2
VIDEO
VIDEO IN
1
2
3
4
IC251
75
Ω DRIVER
IC904
FLIP-FLOP
IC902
SWITCHING
CE
WE
OE
56 29
1LE
2LE
ALE
IC216
BUS INTERFACE
IC206
PROGRAMMABLE ROM
1D1 – 1D10, 2D1 – 2D6
55, 54, 52, 51,
49-47, 45-40, 38-36
57-60, 64-71, 75-78,
81-84, 88-95, 99-102
25-27,
60-66,24,21
2,4,5,7,8,10,11,13,74,76,77,79,80,82,83,85,31,
33,34,36,37,39,40,42,45,47,48,50,51,53,54,56
1Q1 – 1Q10, 2Q1 – 2Q9
HA1 – HA3
HAD0 – HAD15
2, 3, 5, 6, 8-10, 12-17,
19-21, 23, 24, 26
22-18, 8-1, 48,
17, 16, 9, 10, 13
29,31,33,35,38,40,42,44,
30,32,34,36,39,41,43,45
ADDRESS BUS
DATA & ADDRESS BUS
DATA & ADDRESS BUS
22, 19-14, 11-3
2, 207, 206
2D7 – 2D9
HAD0 – HAD15
HA1 – HA3
HAD0 – HAD15
HA1 – HA3
HAD0 – HAD15
HA1 –
HA3
HA4 –HA22
34, 33, 31
26
CE
WE
28
OE
11
A3 – A21
195
HCS0
WEN.UDS
27
HREAD
25
CKE
69
A0 – A2
25-23
DQ0 – DQ15
56
MCLK
CE
WE
OE
IC203
128Mbit SD-RAM
68
CLK
DQ0 – DQ31
A0 – A11
MA0 – MA11
MD0 – MD31
42-33, 45, 46
49
MCS0
20
CS
53
MWE
17
WE
51
MRAS
19
RAS
52
MCAS
18
CAS
62
MDQM0
16
DQM0
73
MDQM1
71
DQM1
86
MDQM2
28
DQM2
97
MDQM3
59
DQM3
161
I2C_DA
78
I2C_SIO
160
I2C_CL
79
I2C_SCL
186
DRVTX
34
SO_ZIVA
187
DRVRX
33
SI_ZIVA
185
DRVCLK
35
SCK_ZIVA
184
HIRQ1
188
DRVRDY
36
DRVIRQ
37
DRVRDY
32
CS_ZIVA
191
RST_SPC
38
RST
116
HIRQ2
165
WRITE_CTRL(ZIVA_E2P)
162
CS_(ZIVA_E2P)
48
BA0
22
BS0
47
BA1
23
BS1
107
VS/WIDE
XTAL
EXTAL
41
40
X901
20MHz
VIDEO
VIDEO OUT
S VIDEO
(DVD ONLY)
MONITOR OUT
VIDEO
AV SEL0 – AV SEL2
J
AUDIO
SECTION
MUTE REQ
Q904
SWITCH
Q903
SWITCH
E
DATA0
IC256
D-FF
IC258
D-FF
IC259
D-FF
IC255
157 DAI_DATA
31
31
HCD-EA20
– AUDIO SECTION –
• SIGNAL PATH
: AUDIO
: AUX IN
: TUNER
• R-ch is omitted due
to same as L-ch.
J
AV SEL0 – AV SEL2
VIDEO
SECTION
ADC_DATA
BCK
LRCK
ADC_DATA, BCK, LRCK, XCK
84 PLL_DI
81 PLL_CLK
83 PLL_CE
80 TUNED
81 PLL_CLK
83 PLL_CE
80 TUNED
82 PLL_DO
IC501 (1/3)
SYSTEM CONTROLLER
Q123
J102 (2/2)
J171
Q122
IC101
AMP
FM/AM TUNER PACK
IC121
AUDIO INPUT
SELECTOR
IC352
A/D CONVERTER
Q103
AMP
4 Y3
2 Y2
3
10 9
Y
A B
15
DOUT
14
BCK
13
LRCK
5 Y1
1 VINL
5 VINR
R-CH
DO
CK
CE
TUNED
FM-DET
FM ANT
GND
AM ANT
GND
L-CH
R-CH
DI
TUDO
TUCLK
TCE
TUNED
TUDI
RDSC
RDSD
R-CH
R-CH
R-CH
TUDO
TUCLK
TCE
TUNED
TUDI
COAXIAL
FM
75
Ω
AM
XCK
16
SYSCK
77 AV SEL1
78 AV SEL2
78 AV SEL2
76 AV SEL0
60 RDS_CLK
61 RDS_DATA
RDSC
RDSD
AV
SEL3
AV
SEL1
79 AV SEL3
AV SEL1
AV SEL2
AV SEL0
AV SEL3
69
AU OUT-MUTE
39
VL-DATA1
40
VL-DATA2
41
VL-DATA3
42
VL-CLK
DATA1
DATA2
DATA3
CLK
31
ATT
VIDEO
AUDIO IN
AUDIO IN
L
R
L
R
4
13
14
2
Q291
DET AMP
16
X291
4.332MHz
IC291
RDS DECODER
MUX
XI
XO
RDATA
RCLK
IC111
LOW-PASS
FILTER
Q112, 212
MUTING
Q507
MUTING
CONTROL
J101 (2/2)
VIDEO
AUDIO OUT
L
R
Q121
ATT
VIDEO
SECTION
E
34
TA-MUTE
Q972
MUTING
CONTROL
Q521, 522
MUTING
Q551, 552
MUTING
Q511, 512
MUTING
IC522
ELECTRONIC
VOLUME
1 VIN1
8
4
5
2
7
VIN2
DATA
CLK
VO1
VO2
IC552
ELECTRONIC
VOLUME
1 VIN1
8
4
5
2
7
VIN2
DATA
CLK
VO1
VO2
IC502
ELECTRONIC
VOLUME
1 VIN1
8
4
5
2
7
VIN2
DATA
CLK
VO1
VO2
31 DATA4
DATA3
CLK
45 DATA1
46 DATA2
47 DATA3
41 LRCK
40 BCK
46 DATA2
47 DATA3
41 LRCK
40 BCK
IC521
LPF
IC551
LPF
IC501
LPF
IC302
D/A CONVERTER
14
VOUT1
13
VOUT2
10
VOUT5
12
VOUT3
34 MDI
35 MC
36 ML
35 MC
36 ML
MDI
MC
ML
11
VOUT4
9
VOUT6
FL
FR
C
SL
SR
5
7
3
1
5
7
3
1
5
7
3
1
SW
FL
FR
C
SL
SR
SW
DATA1
DATA0
DATA3
DATA2
LRCK-ZIVA
BCK-ZIVA
XCK
38 SCKI
AMP
SECTION
K
VIDEO
SECTION
H
VIDEO
SECTION
F
16
VOUT7
20
VOUT8
DM-L
DM-R
FL
FR
C
SL
SR
SW
DATA2
CLK
DATA1
CLK
32
32
HCD-EA20
– AMP SECTION –
• SIGNAL PATH
: AUDIO
HP-MUTE
HP-SW
J851
J301
(+)
(–)
Q505
MUTING
CONTROL
FRONT
L
27 FL DATA
29 FL CLK
29 FL CLK
6 FL STB
(+)
(–)
FRONT
R
(+)
(–)
IC501 (2/3)
SYSTEM CONTROLLER
IC401
POWER AMP
IC802
FL DRIVER
91
HP-SW
7
DIN
8
CLK
9
STB
(+)
(–)
(+)
(–)
SURR
L
(+)
(–)
Q401
STANDBY
CONTROL
CONTROL
43
F-RELAY
45
PROTECT-IN
SURR
R
CENTER
SPEAKER
WOOFER
PHONES
FL801
FLUORESCENT
INDICATOR TUBE
Q881 - 882
MUTING
Q503, 504
SIRCS DETECT
FL, FR, SL, SR, C, SW
K
AUDIO
SECTION
VIDEO
SECTION
VIDEO
SECTION
32
HP MUTE
HP-SW
HP-MUTE
SG1 – SG16
44
R-RELAY
14 – 29
GR1 – GR12
42 – 31
21 KEY INT
I2CDATA,
I2CCLK
I2CCLK
I
SYS RESET, MUTE REQ
G
28 SIRCS
S800
ROTARY
ENCODER
IC801
REMOTE CONTROL
RECEIVER
VOLUME
96 – 94
KEY0 – KEY2
KEY0
S811 – 814,
S821 – 823,
S831
S821 – 823,
S831
12
4
CH2IN
CH2OUT
8
3
10
CH1IN
CH1OUT
STBY
20 RM_INT
93 EN B
92 EN A
47 DVD SYS RESET
38 I2C-CLK
37 I2C-DATA
I2CCLK
I2CDATA
46 DVD MUTE REQ
SYS RESET
MUTE REQ
15
14
X501
5MHz
X2
X1
88
STBY LED
33
STK-MUTE
D812
STANDBY
RELAY
DRIVER
Q462, 463
RELAY
DRIVER
Q381, 382
RELAY
DRIVER
Q383
RELAY
DRIVER
Q331, 332
IC301
POWER AMP
20
12
CH2IN
CH2OUT
16
11
CH1IN
CH1OUT
21
23
CH3IN
CH3OUT
1
6
CH5IN
CH5OUT
5
CH4OUT
RY461
RY381
RY331
RY382
PROTECT
SWITCH
Q473, 474, 477
OVERLOAD
DETECT
Q411, 461
OVERLOAD
DETECT
Q322, 372
OVERLOAD
DETECT
Q321, 371
OVERLOAD
DETECT
Q323
THP471
RELAY
DRIVER
Q476
DC DETECT
Q478, 479
TEMP
DETECT
Q472
Q424 - 426
FAN CONTROL
FAN
FL
FR
C
SL
SR
SW
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