Sony STR-DB795 Service Manual ▷ View online
66
STR-DB795
Pin No.
Pin Name
I/O
Description
51
NC
-
Not used
52 to 54
MD2 to MD0
-
Not used
55
RSTX
I
System reset signal input from the reset signal generator "L": reset For several hundreds msec.
after the power supply rises, "L" is input, then it changes to "H"
after the power supply rises, "L" is input, then it changes to "H"
56
VCC
-
Power supply terminal (+3.3V)
57
X1
O
System clock output terminal (16.5 MHz)
58
X0
I
System clock input terminal (16.5 MHz)
59
VSS
-
Ground terminal
60
STOP
I
AC off detection signal input terminal
61
RDS_ CLK
I
RDS interrupt clock signal input from the tuner unit (AEP and UK models only)
62
POWER.ON/OFF
I
Power key input terminal "L": power on
63
SIRCS
I
Sircs signal input terminal
64
NC
-
Not used
65
TUNER DO
I
Serial data input from the tuner unit
66
TUNER LATCH
O
Serial data latch pulse signal output to the tuner unit
67
DIR ERROR
I
PLL lock error signal and data error flag input from the digital audio interface receiver
68
VCC
-
Power supply terminal (+3.3V)
69, 70
OPT SEL2,
OPT SEL1
O
Digital input selection signal output terminal
71
XSTATE
I
Source clock selection monitor input from the digital audio interface receiver
72
DATA0
I
Audio serial data input from the digital audio interface receiver
73
XMODE
O
System reset signal output to the digital audio interface receiver "L": reset
74
CKSEL1
O
Output clock selection signal output to the digital audio interface receiver
75
CLK
O
Clock signal output to the digital audio interface receiver
76
CE
O
Chip enable signal output to the digital audio interface receiver
77
VCC
-
Power supply terminal (+3.3V)
78
NC
-
Not used
79
DI
O
Write data output to the digital audio interface receiver
80
DO
I
Read data input from the digital audio interface receiver
81
GROUP SW
O
Data selection signal output terminal
82
LRCK SW
O
Signal selection signal output terminal "L": boot strap signal, "H": L/R sampling clock signal
83
PCM IMITATION
-
Not used
84
NC
-
Not used
85
DSP_BST
O
Boot strap signal output to the audio digital signal processor
86
CONTROL.
A1.IN
I
Sircs signal input for CONTROL A1 II
87
CONTROL.
A1.OUT
O
Sircs signal output for CONTROL A1 II
88
DSP GP9
I
Read ready signal input from the audio digital signal processor
89
DSP_HCS
O
Chip select signal output to the audio digital signal processor
90
DSP_HACN
I
Acknowledge signal input from the audio digital signal processor
91
ADC:RST
O
System reset signal output to the A/D converter "L": reset
92
DAC_RST
O
System reset signal output to the D/A converter "L": reset
93
DA1LAT
O
Serial data latch pulse signal output to the D/A converter
94
DACCLK
O
Serial data transfer clock signal output to the D/A converter
95
DAC_MDI
O
Serial data output to the D/A converter
96
DA2LAT
O
Serial data latch pulse signal output to the D/A converter
67
STR-DB795
Pin No.
Pin Name
I/O
Description
97
VCC
-
Power supply terminal (+3.3V)
98
VSS
-
Ground terminal
99
UP CON SDA
O
Serial data output to the video sync separator
100
UP CON SCL
O
Serial data transfer clock signal output to the video sync separator
101
VSS
-
Ground terminal
102
HDOUT
I
Serial data input from the audio digital signal processor
103
HDIN
O
Serial data output to the audio digital signal processor
104
HCLK
O
Serial data transfer clock signal output to the audio digital signal processor
105
GP12
O
Write signal output to the audio digital signal processor
106
XRST
O
System reset signal output to the audio digital signal processor "L": reset
107
PM1
O
PLL initialize signal output to the audio digital signal processor
108
DA1DO
I
Serial data input from the D/A converter
109, 110
SOT1, SIN1
-
Not used
111
EEPROM SCL
O
Serial data transfer clock signal output to the EEPROM
112
EEPROM SDA
I/O
Two-way data bus with the EEPROM
113
FL STB
O
Strobe signal output to the fluorescent indicator tube driver
114 to 117
VIDEO_SW1 to
VIDEO_SW4
O
Video selection signal output terminal
118
PROTECTOR
I
Protect detection signal input from the protect circuit
119
LIMITTER.OUT
O
Output voltage control signal output terminal
120
FUNCTION.SW.
LAT
O
Serial data latch pulse signal selection signal output terminal "L": for electrical volume, "H":
for function switch
for function switch
121
ANALOG_
DIGITAL
O
Analog/digital selection signal output terminal "L": analog, "H": digital
122
VCC
-
Power supply terminal (+3.3V)
123 to 125
NC
-
Not used
126
DAVS
-
Power supply terminal (+3.3V) (for internal D/A converter)
127
DAVC
-
Ground terminal (for internal D/A converter)
128
AVCC
-
Power supply terminal (+3.3V) (for analog)
129
AVRH
I
Reference voltage (+3.3V) input terminal
130
AVRL
I
Reference voltage (0V) input terminal
131
AVSS
-
Ground terminal (for analog)
132, 133
AD1, AD2
I
Front panel key input terminal (A/D input)
134
LIMITTER.IN
I
Voltage limit detection signal input terminal
135
RDS_SIGNAL
I
RDS signal input from the tuner unit (AEP and UK models only)
136
AD5 (NC)
-
Not used
137
NC
-
Not used
138
VERSION
I
Destination setting terminal
139
NC
-
Not used
140
VCC2
-
Power supply terminal (+3.3V)
141
BACKUP
-
Not used
142
GND
-
Ground terminal
143
OPEN
-
Not used
144
VSS
-
Ground terminal
68
STR-DB795
7-1.
CASE SECTION
2
3
3
3
(EXCEPT AEP)
1
1
back panel section
#2
#3
not supplied
#2
4
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
1
X-2022-910-1 FOOT ASSY
2
4-248-594-01 CASE (414535) (SILVER)
2
4-248-594-21 CASE (414535) (GOLD)
2
4-900-512-02 CASE (414535) (BLACK)
3
4-227-843-03 SCREW (TP), FLAT HEAD (BLACK)
3
4-227-843-31 SCREW (TP), FLAT HEAD (SILVER, GOLD)
4
4-860-518-00 CUSHION
#2
7-685-885-09 SCREW +BVTT 4X16 (S)
#3
7-685-646-79 SCREW +BVTP 3X8 TYPE2 IT-3
•
Abbreviation
AUS : Australian model
KR : Korean model
AUS : Australian model
KR : Korean model
MY : Malaysia model
SP
SP
: Singapore model
•
Color variation
SILVER : AEP, UK, Australian
GOLD
SILVER : AEP, UK, Australian
GOLD
: Korean, Singapore, Malaysia, Taiwan
BLACK : AEP, UK, Australian
TW : Taiwan model
SECTION 7
EXPLODED VIEWS
•
Items marked “*” are not stocked since they
are seldom required for routine service. Some
delay should be anticipated when ordering
these items.
are seldom required for routine service. Some
delay should be anticipated when ordering
these items.
•
The mechanical parts with no reference
number in the exploded views are not supplied.
number in the exploded views are not supplied.
•
Accessories are given in the last of the
electrical parts list.
electrical parts list.
NOTE:
•
-XX and -X mean standardized parts, so they
may have some difference from the original
one.
may have some difference from the original
one.
•
Color Indication of Appearance Parts
Example:
KNOB, BALANCE (WHITE) . . . (RED)
Example:
KNOB, BALANCE (WHITE) . . . (RED)
↑
↑
Parts Color
Cabinet's Color
The components identified by mark
0 or dotted line with mark 0 are
critical for safety.
Replace only with part number
specified.
0 or dotted line with mark 0 are
critical for safety.
Replace only with part number
specified.
69
STR-DB795
7-2.
CHASSIS SECTION-1
52
53
54
55
51
not
supplied
(4-8 board)
supplied
(4-8 board)
not
supplied
supplied
TU301
#3
#3
#3
#3
#3
#7
#3
#3
not supplied
#3
#3
#3
chassis section
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
51
A-1054-326-A COMP-V BOARD, COMPLETE
(EXCEPT TW, KR)
51
A-1070-813-A COMP-V BOARD, COMPLETE (TW, KR)
* 52
3-703-244-00 BUSHING (2104), CORD
0 53
1-696-847-22 CORD, POWER (AUS)
0 53
1-769-079-23 CORD, POWER (KR)
0 53
1-777-071-23 CORD, POWER (SP, MY)
0 53
1-827-597-41 CORD, POWER (TW)
0 53
1-829-626-11 CORD, POWER (AEP, UK)
54
4-947-010-01 SCREW, FEEDER FIXED
55
4-974-510-11 SCREW (+BV 3X8 CU)
TU301
1-693-578-21 TUNER (AEP, UK)
TU301
1-693-580-24 TUNER (SP, MY, TW, KR, AUS)
#3
7-685-646-79 SCREW +BVTP 3X8 TYPE IT-3
#7
7-685-647-79 SCREW +BVTP 3X10 TYPE IT-3
The components identified by mark 0 or dotted
line with mark 0 are critical for safety.
Replace only with part number specified.
line with mark 0 are critical for safety.
Replace only with part number specified.
Click on the first or last page to see other STR-DB795 service manuals if exist.