Sony STR-K402 Service Manual ▷ View online
21
STR-K402
3-16. IC PIN FUNCTION DESCRIPTION
• IC102 MB90553ABPF-G-193-BND (SYSTEM CONTROL)
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
49
50
I/O
I
I
O
O
O
O
O
O
—
O
—
O
O
O
O
O
O
O
I
I
O
O
—
I
O
I
—
—
O
—
—
—
—
—
—
—
—
I
I
I
I
—
I
I
—
—
I
I
—
—
Pin Name
A
B
BLUE LED
DCS LED
AFD LED
2CH LED
MOD LED
PW RY
P30
SP_A RY
VSS
CENTER RY
WOOFER RY
REAR RY
H/P RY
FL DATA
FL CLK
FL LAT
FLASH 1
FLASH 2
YSS912 CLK
YSS912 SI
VCC
YSS912 SO
YSS912 CS
HTIB
C
P50
AC MUTING
P52
P53
P54
P55
AVCC
AVRH
AVRL
AVSS
AD KEY IN 1
AD KEY IN 2
AD KEY IN 3
AD KEY IN 4
VSS
VERSION
RDS SIGNAL
P66
P67
STOP
RDS DT
MD0
MD1
Description
Read volume encoder A changing
Read volume encoder B changing
Control Blue LED
Control DCS LED
Control AFD LED
Control 2CH LED
Control MODE LED
Control power relay
Control front speaker relay
Ground
Control center speaker relay
Control woofer relay
Control rear speaker relay
Control headphone relay
Output data signal to FL tube driver
Output clock signal to FL tube driver
Output latch signal to FL tube driver
Input FLASH 1 signal
Input FLASH 2 signal
Output clock signal to DSP
Output data signal to DSP
Power supply
Input data signal from DSP
Output chip select signal to DSP
Input HTIB signal
Power stabilizing capacitor
Control power to power amp
Analog power supply
Analog ground
Read key push signal
Read key push signal
Read key push signal
Read key push signal
Ground
Read version setting
Detect RDS signal level
Input signal when AC off
Read RDS data
Selection of micom operation mode
Selection of micom operation mode
22
STR-K402
Pin No.
51
52
53
54
55
56
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
90
91
92
93
94
95
96
97
98
99
100
I/O
—
—
I
—
I
I
I
I
O
O
O
I
—
—
O
I
I
O
O
O
O
O
O
O
O
O
I
O
O
O
—
—
—
—
—
—
—
O
I
O
O
O
O
I
I
I
—
O
O
O
Pin Name
MD2
HSTX
RDS CLK
P73
HP SW
PW KEY IN
SIRCS
PROTECTOR
TUNER LAT
TUNER DATA OUT
TUNER CLK
TUNER DATA IN
P84
P85
TUNER MUTING
AUTO STOP
STEREO
CODEC CLK
CODEC CDT1
CODEC DFS
CODEC PD
CODEC MUTING
CODEC CS
VIDEO MUTING
S1
S2
RESET
M61501 DATA
M.CLK
M.CE
VSS
X0
X1
VCC
P00
P01
P02
SYSTEM MUTING
D.DO
DIR DI
DIR CE
DIR CLK
DIR XMODE
DIR DATAO
D.ERR
DIR XSTATE
P14
ANG/DIG
Y_CSB
Y_IC
Description
Selection of micom operation mode
Hardware standby signal
Read RDS clock
Detect headphone switch
Detect power switch key
Input data from remote control receiver
Detect protector status
Output latch signal to tuner
Output data signal to tuner
Output clock signal to tuner
Input tuner freq. data
Mute tuner during scanning
Tuner has tuned to a freq.
Tuned freq. has stereo
Output clock signal to CODEC
Output Control Data signal to CODEC
Output DFS mode signal to CODEC
Output Power Down signal to CODEC
Output Soft Muting signal to CODEC
Output CS signal to CODEC
Control Video muting
Control Video IC switching
Control Video IC switching
Detect reset signal
Output data signal to sound processor
Output clock signal to sound processor
Output chip enable signal to sound processor
Ground
For micom clock
Power supply
Control muting circuit
Input data signal from DIR
Output data signal to DIR
Output CE signal to DIR
Output clock signal to DIR
Output reset signal to DIR
Input audio data signal from DIR
Input PLL error muting from DIR
Input XSTATE data from DIR
Control muting circuit
Output CSB signal to DSP
Output IC signal to DSP
23
STR-K402
SECTION 4
EXPLODED VIEWS
NOTE:
•
•
-XX, -X mean standardized parts, so they may
have some differences from the original one.
have some differences 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.
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.
in the exploded views are not supplied.
•
Accessories and packing materials are given in
the last of this parts list.
the last of this parts list.
The components identified by mark 0 or
dotted line with mark 0 are critical for safety.
Replace only with part number specified.
dotted line with mark 0 are critical for safety.
Replace only with part number specified.
•
Color Indication of Appearance Parts Example:
KNOB, BALANCE (WHITE) . . . (RED)
KNOB, BALANCE (WHITE) . . . (RED)
↑
↑
Parts of Color Cabinet’s Color
not
supplied
Chassis section
6
6
6
5
7
3
4
4
8
4
4
#2
1
2
#1
Ref. No.
Part No.
Description
Remarks
Ref. No.
Part No.
Description
Remarks
1
4-232-113-01 KNOB (VOL) (BLACK)
1
4-232-113-11 KNOB (VOL) (SILVER)
2
X-4953-890-1 FRONT PANEL ASSY (BLACK)
2
X-4953-891-1 FRONT PANEL ASSY (SILVER)
3
1-681-429-11 HP BOARD
4
4-951-620-01 SCREW (2.6X8), +BVTP
5
4-232-118-01 CASE (BLACK)
5
4-232-118-21 CASE (SILVER)
6
4-210-291-01 SCREW (CASE 3 TP2) (FOR BLACK)
6
4-210-291-11 SCREW (CASE 3 TP2) (FOR SILVER)
7
1-681-430-11 POWER SW BOARD
8
A-2007-948-A DISPLAY BOARD,COMPLETE
#1
7-685-646-79 SCREW +BVTP 3X8 TYPE2 IT-3
#2
7-685-645-79 SCREW +BVTP 3X6 TYPE2 N-S
4-1.
FRONT PANEL SECTION
24
STR-K402
T901
55
64
51
66
67
56
57
62
61
58
60
52
52
70
70
69
#1
#1
#1
#1
#1
#2
#2
#2
#1
#1
#1
#2
#3
#3
#2
#2
#2
not supplied
not supplied
not supplied
not supplied
not supplied
not supplied
not supplied
69
51
A-2007-946-A DIGITAL BOARD,COMPLETE
52
4-232-237-01 FOOT (DIA. 30)
55
A-2007-945-A STANDBY BOARD,COMPLETE
* 56
4-924-098-91 HOLDER, PC BOARD
57
A-2007-941-A MAIN BOARD,COMPLETE
58
1-773-001-11 WIRE (FLAT TYPE) (15 CORE)
60
3-905-609-01 SCREW (TRANSISTOR)
61
1-693-407-21 TUNER UNIT
62
4-235-014-01 BACK PANEL
64
1-681-428-11 VIDEO BOARD
66
3-703-244-00 BUSHING (FBS001), CORD
0 67
1-783-820-11 CORD, POWER
69
4-921-941-01 CUSHION
70
3-701-748-00 CLAMP
0 T901
1-435-313-11 TRANSFORMER, POWER
#1
7-685-646-79 SCREW +BVTP 3X8 TYPE2 IT-3
#2
7-685-645-79 SCREW +BVTP 3X6 TYPE2 N-S
#3
7-685-880-09 SCREW +BVTT 4X6 (S)
Ref. No.
Part No.
Description
Remarks
Ref. No.
Part No.
Description
Remarks
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.
4-2.
CHASSIS SECTION
Click on the first or last page to see other STR-K402 service manuals if exist.