Sony STR-DG900 Service Manual ▷ View online
65
STR-DG900
IC1101 MB91F155APFV-DG900 (SYSTEM CONTROL) (DIGITAL BOARD (5/5))
Pin No.
Pin Name
I/O
Pin Description
1
[7.1_DATA]
O
INPUT SELECT IC DATA
2
[7.1_CLK]
O
INPUT SELECT IC CLOCK
3
FL_LAT
O
FL DRIVER IC LATCH
4
FL_DIN
O
FL DRIVER IC DATA
5
SUB-T
O
SUB TRANSFORMER VOLT O/P
6
<<NO_USE>>
O
Not used (Open)
7
FL_CLR
O
FL DRIVER IC RESET
8
FL_CLK
O
FL DRIVER IC CLOCK
9
VSS
—
Ground
10
TONE_JOG_4B
I
TONE JOG 4B
11
TONE_JOG_4A
I
TONE JOG 4A
12
FUNCTION_JOG_1B
I
FUNCTION JOG 1B
13
FUNCTION_JOG_1A
I
FUNCTION JOG 1A
14
TUNING_+/–_JOG_3B
I
TUNING JOG 3B
15
TUNING_+/–_JOG_3A
I
TUNING JOG 3A
16
VOL_JOG_2B
I
VOLUME JOG 2B
17
VOL_JOG_2A
I
VOLUME JOG 2A
18
SP_A_RY
O
SPEAKER A RELAY CONTROL
19
SP_B_RY
O
SPEAKER B RELAY CONTROL
20
CENTER_RY
O
CENTER RELAY CONTROL
21
REAR_RY
O
REAR CH RELAY CONTROL
22
WOOFER_RY
O
WOOFER RELAY CONTROL
23
PROTECTOR
I
PROTECTOR CIRCUIT
24
HP_CTRL
I
HP DETECTION SW
25
PW_RY
O
POWER RELAY CONTROL
26
VSS
—
Ground
27
VCC
—
Power supply pin (+3.3 V)
28
TUNER_STEREO
I
TUNER STEREO IN
29
TUNER_AUTO_STOP
I
TUNER AUTO STOP IN
30
TUNER_MUTE
O
TUNER MUTE
31
TUNER_DO
I
TUNER PLL DATA IN
32
TUNER_SERIAL_CLK
O
TUNER SERIAL CLOCK
33
TUNER_DATA
O
TUNER DATA
34
T.LAT
O
TUNER LATCH
35
HC151_A2
O
OPTICAL INPUT SW. C
36 to 39
V.SW1 to V.SW4
O
VIDEO SWITCH 1 to 4
40
V595_OE
O
V595 OE
41
2ND_RY
O
2ND ROOM RELAY CONTROL
42
HP_RY
O
HP RELAY CONTROL
43
UPCON_DATA
O
UP CONVERT DATA
44
VSS
—
Ground
45
BRIDGEABLE RY
O
BRIDGEABLE RELAY CONTROL
46
FUSE DETECT
I
FUSE DETECT CIRCUIT
47
HC151_A0
O
OPTICAL INPUT SW. A
48
HC151_A1
O
OPTICAL INPUT SW. B
49
[GP12]
I
DSP IC GP12
50
XM_DACMS/PAGE0
O
XM MS
51
XM_DBPOWER/PAGE1
O
XM POWER
52
MD2
—
FLASH PROGRAMMING
53
MD1
—
FLASH PROGRAMMING (Fixed at H)
54
MD0
—
FLASH PROGRAMMING
55
RSTX
I
RESET IC
66
STR-DG900
Pin No.
Pin Name
I/O
Pin Description
56
VCC
—
Power supply pin (+3.3 V)
57
X1
I
System clock signal input (16.5 MHz)
58
X0
O
System clock signal output (16.5 MHz)
59
VSS
—
Ground
60
VOLT_DETECT_STOP
I
VOLTAGE DOWN DETECT
61
DIR_DO
I
DIR DATA OUT
62
PW_ON/OFF
I
POWER ON/OFF SW
63
SIRCS
I
REMOTE SENSOR
64
V_MUTE
O
VIDEO MUTE CONTROL
65
COMP_SEL2
O
COMPONENT VIDEO SELECT SWITCH 2
66
COMP_SEL1
O
COMPONENT VIDEO SELECT SWITCH 1
67
DIR CE
O
DIR CE
68
VCC
—
Power supply pin (+3.3 V)
69
ADCC_DET
I
ADCC DSP DETECT
70
UPCON_CLK
O
UP CONVERT CLOCK
71
DIR_DATAO
O
DIR DATA 0
72
9718.XRST1
O
DSP IC RESET
73
9718.PM1
O
DSP IC PM1
74
9718.GP9
I
DSP IC GP9
75
9718.BST1
O
DSP IC BST1
76
9718.HCS1
O
DSP IC HCS1
77
VCC
—
Power supply pin (+3.3 V)
78
9718.HACN1
I
DSP IC HACN1
79
XM_COMMAND
O
XM COMMAND
80
XM_RESET
O
XM RESET
81
DIR_ERROR
I
DIR ERROR
82
DIR_XMODE
O
DIR XMODE
83
DIR_CKSEL1
O
DIR CKSEL1
84
DIR_CLK
O
DIR CLOCK
85
DIR_DIN
O
DIR DIN
86
DIR_XSTATE
O
DIR XSTATE IN
87
UP_MUTE
O
UP MUTE
88
M_MUTE
O
M MUTE
89
PCM1609 RST
O
8CH DAC IC RESET
90
PCM1609 ML
O
8CH DAC IC ML
91
PCM1609 XM MC
O
XM DAC IC/8CH DAC IC MC
92
PCM1609 XM MDI
O
XM DAC IC/8CH DAC IC MDI
93
PCM1609 MDO
I
8CH DAC IC MDO
94
FLASH_A
—
FLASH PROGRAMMING (Fixed at L)
95
FLASH_B
—
FLASH PROGRAMMING (Fixed at L)
96
FLASH_C
—
FLASH PROGRAMMING (Fixed at H)
97
VCC
—
Power supply pin (+3.3 V)
98
VSS
—
Ground
99
EEPROM.SDA
I/O
EEPROM
100
EEPROM.SCL
I/O
EEPROM
101
VSS
—
Ground
102
9718.HCLK
O
DSP IC CLOCK
103
9718.HDIN
O
DSP IC DATA IN
104
9718.HDOUT
I
DSP IC HD OUT
105
OSD_CLK
O
OSD CLOCK
106
OSD_DATA
O
OSD DATA
107
OSD_LAT
O
OSD LATCH
108
HDMI RST
O
HDMI RESET
67
STR-DG900
Pin No.
Pin Name
I/O
Pin Description
109
HDMI TX/SOT1
O
HDMI REPEATER DOUT/FLASH PROGRAMMING
110
HDMI RX/SIN1
I
HDMI REPEATER DIN/FLASH PROGRAMMING
111
XM_REQ
O
XM REQUEST
112
XM_DOUT
O
XM DOUT
113
XM_DIN
I
XM DIN
114
OSD_ON/OFF
O
OSD ON/OFF SW.
115
HDMI_MUTE
I
HDMI MUTE
116
VOL_IC.DATA
O
VOL IC DATA
117
VOL_IC.CLK
O
VOL IC CLOCK
118
HDMI_CTL
O
HDMI CONTROL
119
A_D
O
ANALOG/DIGITAL SELECT (Not used)
120
SYSTEM_MUTE
O
SYSTEM MUTE (Not used)
121
BST_SEL
O
BST SELECT
122
VCC
—
Power supply pin (+3.3 V)
123 to 125
DA2 to DA0
—
Not used (Open)
126
DAVS
—
Ground
127
DAVC
—
Power supply pin (+3.3 V)
128
AVCC
—
Power supply pin (+3.3 V)
129
AVRH
—
Power supply pin (+3.3 V)
130
AVRL
—
Ground
131
AVSS
—
Ground
132, 133
AD0, AD1
I
A/D KEYS
134
<<NO_USE>>
O
Not used (Open)
135
MODEL
I
Model initial setting input (Fixed at L)
136
AREA
I
Destination (AREA) initial setting input (Fixed at L)
137
ADCC_DIN
I
ADCC ANALOG IN
138, 139
<<NO_USE>>
O
Not used (Open)
140
VCC2
—
Power supply pin (+3.3 V)
141
BACKUP
—
Power supply pin (+3.3 V)
142
X0A
O
Not used (Connected to ground)
143
X1A
I
Not used (Open)
144
VSS
—
Ground
68
STR-DG900
SECTION 5
EXPLODED VIEWS
Ref. No.
Part No.
Description
Remark
5-1. CASE SECTION
Ref. No.
Part No.
Description
Remark
1
2-666-933-31 CASE
2
3-363-099-11 SCREW (CASE 3 TP2)
#1
7-685-646-79 SCREW +BVTP 3X8 TYPE2 IT-3
NOTE:
• The mechanical parts with no reference
number in the exploded views are not supplied.
• Items marked “*” are not stocked since
they are seldom required for routine service.
Some delay should be anticipated
when ordering these items.
Some delay should be anticipated
when ordering these items.
• -XX and -X mean standardized parts, so
they may have some difference from the
original one.
original one.
• Color Indication of Appearance Parts
Example :
KNOB, BALANCE (WHITE) ... (RED)
Parts Color Cabinet’s Color
• Accessories are given in the last of this parts list.
R
R
The components identified by
mark 0 or dotted line with mark
0 are critical for safety.
Replace only with part number
specified.
mark 0 or dotted line with mark
0 are critical for safety.
Replace only with part number
specified.
Les composants identifiés par une
marque 0 sont critiques pour
la sécurité.
Ne les remplacer que par une piéce
portant le numéro spécifié.
marque 0 sont critiques pour
la sécurité.
Ne les remplacer que par une piéce
portant le numéro spécifié.
1
2
2
#1
#1
not supplied
not supplied
(CONNECTION board)
(CONNECTION board)
not supplied
#1
#1
#1
#1
#1
#1
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