Sony DAV-EA20 / HCD-EA20 Service Manual ▷ View online
77
HCD-EA20
Pin No.
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89 to 96
97
98
99
100
Pin Name
CONTROL 2
GFS DVD
MUTE CD
MUTE 2D
SLED
FG
SP ON
JIT
TE
PI
FE
AVSS
AVREF
AVDD
GFS CD
SCLK CD
TSD
FOK CD
LOCK CD
LDSEL
SACD/DVD
I2C SIO
I2C SCL
RXD
TXD
SDCLK RF
SDATA RF
XWR
XRD
(PWE)
VDD
VSS
A0 to A7
DSAVE
XDRST
WP EEP
SCL EEP
I/O
I
I
O
O
I
I
O
I
I
I
I
—
I
—
I
O
O
I
I
O
O
I/O
I/O
I
O
O
I/O
O
O
—
—
—
O
O
O
O
O
Description
Disc tray out detection signal input terminal Not used
Guard frame sync signal input from the DVD decoder
Muting on/off control signal output to the digital signal processor “H”: muting on
Muting on/off control signal output to the motor/coil driver “H”: muting on
Sled motor servo drive PWM signal input terminal
Spindle motor control signal input
Muting on/off control signal output to the motor/coil driver “H”: muting on
Jitter signal input
Tracking error signal input from the DVD/CD RF amplifier
Pull in signal input from the DVD/CD RF amplifier
Focus error signal input from the DVD/CD RF amplifier
Ground terminal (for A/D converter)
Reference voltage input terminal (for A/D converter)
Power supply terminal (+3.3V) (for A/D converter)
Guard frame sync signal input from the digital signal processor
SENSE serial data reading clock signal output to the digital signal processor
Thermal shut down signal output to the motor/coil driver
Focus OK signal input from the digital signal processor
GFS is sampled by 460 Hz “H” input when GFS is “H”
Laser diode selection signal output
“SACD/DVD selection signal output “L”: DVD, “H”: SACD”
Communication data bus with the DVD system processor and system controller
Communication data reading clock signal input or transfer clock signal output with the DVD system processor
and system controller
and system controller
Serial data input (RS-232C)
Serial data output (RS-232C)
Serial data transfer clock signal output to the DVD/CD RF amplifier
Two-way data bus with the DVD/CD RF amplifier
Write strobe signal output to the DVD decoder
Read strobe signal output to the DVD decoder
Not used
Power supply terminal (+3.3V) (digital system)
Ground terminal (digital system)
Address signal output to the DVD decoder
Motor/coil driver power save control signal output terminal
Reset signal output to the digital signal processor and DSD decoder “L”: reset
Write protect signal output to the EEPROM
Clock signal output to the EEPROM
78
HCD-EA20
• IC501
µ
PD703260YGF-S07-JBT-A (SYSTEM CONTROLLER)(UCOM BOARD)
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48 to 59
60
61
I/O
I
I
—
—
O
O
—
O
O
—
—
—
—
I
O
I
I
O
O
I
I
I
I
O
I
I
O
I
O
O
O
O
O
O
—
—
I
I
O
O
O
O
O
O
I
I
O
O
I
I
Pin Name
UNREG MONITOR
SUBTRANS-MONITOR
AVREF0
AVSS
NO-USE
FL STB
AVREF1
NO-USE
AC ON/OFF
IC
VDD
REGC
VSS
X1
X2
RESET
XT1
XT2
LOD_POSI
RM_INT
KEY INT
NO-USE
AC_CUT
LOD_NEG
IN SW
OUT SW
FL DATA
SIRCS
FL_CLK
NO-USE
ATT
HP MUTE
STK-MUTE
TA-MUTE
EVSS
EVDD
I2C DATA
I2C CLK
VL-DATA1
VL-DATA2
VL-DATA3
VL-CLK
F-RELAY
R-RELAY
PROTECT-IN
DVD MUTE REQ
DVD SYS RESET
NO-USE
RDS_CLK
RDS_DATA
Description
Monitoring voltage input for protecting power block
Monitoring voltage input for protecting power block
Analog reference voltage for A/D converter
Ground terminal (analog)
Not used (open)
Strobe signal output to the FL driver (IC802)
Analog reference voltage for D/A converter
Not used (open)
Power supply and relay control signal output
Flash programing mode terminal
Power supply terminal
Regulator control terminal (connected to the capacitor)
Ground terminal
Main oscillator signal input
Main oscillator signal output
System reset signal input
Sub oscillator signal input (pull-down)
Sub oscillator signal output (open)
Loading motor control signal output (open action)
Wakeup signal input from standby mode by sircs input
Wakeup signal input from standby mode by key input
Not used (pull-down)
AC-CUT detection signal input (primary power off)
Loading motor control signal output (close action)
Switch (tray position) signal input (tray in)
Switch (tray position) signal input (tray out)
Data output to the FL driver (IC802)
SIRCS signal input from the remote sensor (IC801)
Clock output to the FL driver (IC802)
Not used (open)
Line attenuation control signal output
Muting control signal output for the headphone signal
Standby control signal output to the power amplifier (IC401)
Line muting signal output
Ground terminal (port)
Power supply terminal (port)
I2C data input
I2C clock input
Volume control data output to the electronic volume (IC502)
Volume control data output to the electronic volume (IC552)
Volume control data output to the electronic volume (IC522)
Clock output to the electronic volumes
Front speaker relay and woofer relay control signal output
Rear speaker relay and center speaker relay control signal output
Speaker protection signal input
Muting request signal input from the DVD system processor (IC207)
Reset signal output to the DVD system processor (IC207)
Not used (open)
RDS clock input
RDS data input
79
HCD-EA20
Pin No.
62 to 68
69
70
71
72
73 to 75
76
77
78
79
80
81
82
83
84
85, 86
87
88
89, 90
91
92
93
94
95
96
97
98
99
100
I/O
O
O
O
—
—
O
O
O
O
O
I
O
O
O
I
O
O
O
O
I
I
I
I
I
I
I
I
I
I
Pin Name
NO-USE
AU OUT MUTE
NO-USE
BVSS
BVDD
NO-USE
AV SEL0
AV SEL1
AV SEL2
AV SEL3
TUNED
PLL_CLK
PLL_DO
PLL CE
PLL DI
NO-USE
SOFT-TEST
STBY LED
NO-USE
HP-SW
EN_A
EN_B
KEY2
KEY1
KEY0
SHIMUKE
MODEL
DEVICE1
DEVICE2
Description
Not used (open)
Analog audio signal output muting control signal output
Not used (open)
Ground terminal (bus interface)
Power supply terminal (bus interface)
Not used (open)
Audio / video select0 signal output
Audio / video select1 signal output
Audio / video select2 signal output
Audio / video select3 signal output
Tuner tuned status signal input from the tuner
Clock output to the tuner
Data output to the tuner
Chip enable signal output to the tuner
Data input from the tuner
Not used (open)
Soft check terminal
Standby LED control signal output
Not used (open)
HP plug insert detection signal input
Volume signal input from the encoder
Volume signal input from the encoder
Key input 2
Key input 1
Key input 0
Destination selection terminal
Model selection terminal
Device selection1 terminal (DISPLAY)
Device selection2 terminal (AMP)
NOTE:
• -XX, -X mean standardized parts, so they may
have some difference from the original one.
• Items marked “*” are not stocked since they
are seldom required for routine service. Some
delay should be anticipated when ordering
these items.
delay should be anticipated when ordering
these items.
SECTION 7
EXPLODED VIEWS
80
HCD-EA20
• The mechanical parts with no reference
number in the exploded views are not supplied.
• Abbreviation
RU : Russian model
The components identified by mark
0
or
dotted line with mark
0
are critical for safety.
Replace only with part number specified.
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
7-1. CASE SECTION
1
2
2
#1
#1
chassis section
front panel section
1
4-249-698-01 CASE
2
3-363-099-11 SCREW (CASE 3 TP2)
#1
7-685-646-79 SCREW +BVTP 3X8 TYPE2 N-S
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