Sony DVP-FX740DT Service Manual ▷ View online
6-1
DVP-FX740DT
SECTION 6
IC PIN FUNCTION DESCRIPTION
6-1. MPEG/DSP/RF PIN FUNCTIOM (MAIN BOARD U7: MT1389LP)
Pin No.
Name
I/O
Description
1
RFA
I
RFA analog input RF main beam input A
2
RFB
I
RFB analog input RF main beam input B
3
RFC
I
RFC analog input RF main beam input C
4
RFD
I
RFD analog input RF main beam input D
5
RFE
I
RFE analog input RF sub beam input E
6
RFF
I
RFF analog input RF sub beam input F
7
AVDD18
-
AVDD18_2 analog power (Analog 1.8V power)
8
AVDD133
-
AVDD33_1 analog power (Analog 3.3V power)
9
XTALI
I
XTALI input (27MHz crystal input)
10
XTALO
O
XTALO output (27MHz crystal output)
11
AGND
-
AGND33 analog ground
12
V20
O
V20 analog output (Reference voltage 2.0V)
13
V14
O
V14 analog output (Reference voltage 1.4V)
14
REXT
I
Current reference input. It generates reference current for RF path.
15
MDI1
I
Laser power monitor input
16
MDI2
I
Laser power monitor input
17
LDO1
O
Laser driver output
18
LDO2
O
Laser driver output
19
AVDD33
-
Analog 3.3V power
20
DMO
O
Disk motor control output. PWM output.
21
FMO
O
Feed motor control. PWM output.
22
TRAY_OPEN
O
Tray PWM output. Tray open output.
23
TRAY_CLOSE
O
Tray PWM output. Tray close output.
24
TRO
O
Tracking servo output. PDM output of tracking servo compensator.
25
FOO
O
Focus servo output. PDM output of focus servo compensator.
26
FG/GPIO2
I
Motor hall sensor input
27
USB_DP
I
USB port DPLUS analog pin
28
USB_DM
I
USB port DMINUS analog pin
29
USB_V33
-
Digital IO power 3.3V
30
USB_GND
-
Digital IO ground
31
PAD_VRT
I
Capacitance connection
32
USB_V18
-
Digital core power 1.8V
33
GPIO3/INT#
I/O
Microcontroller part 3-1
34
GPIO4
I
General purpose IO 4
35
GPIO6
O
General purpose IO 6
36
SF_CS_
I/O
SF_CS_
37
SF_DO
I/O
Serial flash data out
38
SF_DI
I/O
Serial flash data in
39
SF_CK
I/O
Serial flash clock
40
UP1_6/SCL
I/O
I2C clock pin
41
UP1_7/SDA
I/O
I2C data pin
42
ICE
I
Microcontroller ICE mode enable
43
PRST#
I
Power on reset input, active low
44
IR
I
IR control signal input
45
RD0
I/O
DRAM data 0
46
RD1
I/O
DRAM data 1
47
RD2
I/O
DRAM data 2
48
RD3
I/O
DRAM data 3
49
RD4
I/O
DRAM data 4
50
DVDD33
-
3.3V power pin for internal digital circuitry
51
RD5
I/O
DRAM data 5
52
RD6
I/O
DRAM data 6
53
RD7
I/O
DRAM data 7
6-2
DVP-FX740DT
Pin No.
Name
I/O
Description
54
DVDSD18
-
1.8V power pin for internal digital circuitry
55
DQM0
I/O
PD data mask 0
56
RD15
I/O
DRAM data 15
57
RD14
I/O
DRAM data 14
58
RD13
I/O
DRAM data 13
59
RD12
I/O
DRAM data 12
60
DVSS33
-
3.3V Ground pin for internal digital circuitry
61
RD11
I/O
DRAM data 11
62
RD10
I/O
DRAM data 10
63
RD9
I/O
DRAM data 9
64
RD8
I/O
DRAM data 8
65
DQM1
I/O
PD data mask 1
66
RCLK
I/O
DRAM clock
67
RA11
I/O
DRAM address bit 11
68
DVDD33
-
3.3V power pin for internal digital circuitry
69
RA9
I/O
PD DRAM address 9
70
RA8
I/O
PD DRAM address 8
71
RA7
I/O
PD DRAM address 7
72
RA6
I/O
PD DRAM address 6
73
RA5
I/O
PD DRAM address 5
74
RA4
I/O
PD DRAM address 4
75
RWE#
O
PD DRAM write enable, active low
76
CAS#
O
PD DRAM column address strobe, active low
77
RAS#
O
PD DRAM row address strobe, active low
78
BA0
I/O
PD DRAM bank address 0
79
DVSS18
-
1.8V ground pin for internal digital circuitry
80
BA1
I/O
PD DRAM bank address 1
81
RA10
I/O
PD DRAM address 10
82
RA0
I/O
PD DRAM address 0
83
RA1
I/O
PD DRAM address 1
84
DVDD33
-
3.3V power pin for internal digital circuitry
85
RA2
I/O
PD DRAM address 2
86
RA3
I/O
PD DRAM address 3
87
GPIO7/CKE
O
GPI07
88
VSTD/GPIO8
O
GPI08
89
UD/GPIO9
I/O
RXD1
90
DVDD18
-
1.8V power pin for internal digital circuitry
91
LR/GPIO10
O
GPIO10
92
HSTR/GPIO11
I/O
Microcontroller part 3-0 (Internal pull-up)
93
SPDIF/GPIO12
O
GPIO12
94
VSYU/GPIO13
I/O
GPIO13
95
VCK/GPIO14
I/O
3.3V power pin for video DAC circuitry
96
VOE/GPIO15
I/O
Bandgap reference voltage
97
HOE/GPIO16
-
Full scale adjustment (suggest to use 560 ohm)
98
HSTL/GPIO17
I/O
Ground pin for video DAC circuitry
99
HCK/GPIO18
I/O
Analog composite output
100
DACVDDC
-
3.3V power pin for video DAC circuitry
101
VREF
O
3.3V power pin for video DAC circuitry
102
FS
O
Green, Y, SY, or CVBS
103
DACVSSC
-
Blue, CB/PB, or SC
104
CVBS
O
Red, CR/PR, CVBS, or SY
105
DACVDDB
-
3.3V power pin for video DAC circuitry
106
DACVDDA
-
3.3V power pin for video DAC circuitry
107
G
O
Green single output
6-3E
DVP-FX740DT
Pin No.
Name
I/O
Description
108
B
O
Blue single output
109
R
O
Red signal output
110
AADVSS
-
3.3V power pin for audio clock circuitry
111
AKIN2/GPIO19/
AUDIO_MUTE
O
APLL external capacitance connection
112
ADVCM/GPIO20/
VCOM
O
Ground pin for audio DAC circuitry
113
AKIN1/GPIO21/
AUDIO_MUTE
O
Ground pin for audio DAC circuitry
114
AADVDD
-
Reserved
115
APLLVDD
-
Reserved
116
APLLCAP
O
GPIO
117
ADACVSS
-
Audio DAC reference voltage
118
AR/GPIO0
O
GPIO
119
AVCM
O
Reserved
120
AL/GPIO1
O
Reserved
121
ADACVDD1
-
3.3V power pin for audio DAC circuitry
122
ADACVDD2
-
3.3V power pin for audio DAC circuitry
123
AVDD18
-
Analog 1.8V power
124
AGND18
-
Analog ground
125
RFIP
I
AC coupled DVD RF signal input RFIP
126
RFIN/OPOUT
I
AC coupled DVD RF signal input RFIN
127
RFG/OPINP
I
Main beam, RF AC input path
128
RFH/OPINN
I
Main beam, RF AC input path
7-1
DVP-FX740DT
SECTION 7
ELECTRICAL ADJUSTMENT
This section describes procedures and instructions necessary for
adjusting electrical circuits in this set.
adjusting electrical circuits in this set.
7-1. VCOM DC LEVEL
1. VCOM DC Level Adjustment
<Purpose>
When the LCD Board or MAIN Board is replaced, the VCOM DC
Level Adjustment is necessary.
When the LCD Board or MAIN Board is replaced, the VCOM DC
Level Adjustment is necessary.
Note: There are two methods of VCOM DC level adjustments. Please adjust
it by method 1 when the set can display the adjustment mode. Adjust
it by method 2 when the set cannot display.
it by method 2 when the set cannot display.
When adjusting it by the method 1, please record the value displayed
in the adjustment mode before parts are exchanged.
in the adjustment mode before parts are exchanged.
Instruments required:
1) Digital voltmeter
2) Standard commander (RMT-D193)
3) AC power adaptor
1) Digital voltmeter
2) Standard commander (RMT-D193)
3) AC power adaptor
Display method of adjustment mode:
1) The AC power adaptor is connected and it turns on power.
2) “Loading”
1) The AC power adaptor is connected and it turns on power.
2) “Loading”
→“No Disc” is displayed.
3) Press the button of standard commander as following order.
[0]
[0]
→[0]→[0]→[ANGLE]
4) Adjustment mode is displayed.
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Screen of adjustment mode
Adjusting method:
Method 1. (When the adjustment mode is displayed)
1) Before exchanging parts, adjustment mode is displayed and the
1) Before exchanging parts, adjustment mode is displayed and the
value is recorded.
2) After exchanging parts, adjustment mode is displayed again.
3) Matches it to the recorded value with the VOL [+] or [–] button
3) Matches it to the recorded value with the VOL [+] or [–] button
of standard commander (Or, this set).
4) The adjustment mode is ended pushing the [ENTER] button of
standard commander (Or, this set).
<Adjustment example>
The value before parts are exchanged is recorded.
(In this case “138”)
The value before parts are exchanged is recorded.
(In this case “138”)
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↓
After exchanging parts, adjustment mode is displayed again.
(“125” is an initial value.)
(“125” is an initial value.)
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↓
Matches it to the recorded value with the VOL [+] or [–] button.
(In this case “138”)
(In this case “138”)
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