Sony HT-K25 / TA-VE25 Service Manual ▷ View online
TA-VE25
13
13
3-6. Schematic Diagram – Display Section –
•
See page 7 for Waveforms.
•
See page 14 for IC Pin Function Description.
C214
C216
Q201
D209
C209
D211
X201
FL201
FB201
FB202
C224
Q211
FB203
CN204
D
2
1
2
NO704
NO702
CNP201
D202
D201
Q213
CN202
C205
C225
C226
C212
C211
Q210
Q212
C210
C208
C207
C223
C203
C204
C213
JR
2
0
1
R213
R243
C222
R224
R223
R
2
3
8
R
2
2
2
R
2
2
1
R218
R226
R225
R237
R229
R244
JR203
R
2
2
0
R219
R235
R236
R233
R212
R234
R232
R230
R231
IC203
R208
R239
R241
R240
JR202
C217
JR204
R209
R201
JR205
JR
2
0
6
JR
2
0
7
0.01
25V
B
0.01
25V
B
BA1F4M
1SS352
0.22
10V
B
1SS352
16MHz
0UH
0UH
100p
50V
CH
2SC2603TP-EF
0UH
4P
1
S
S
3
5
2
7P
1SS352
11ES2-TB5
2SA1175TP-HFE
5P
0.1
25V
F
0.22
10V
B
0.1
25V
F
0.01
25V
B
0.1
25V
F
2SA1175TP
-HFE
2SC2603TP
-EF
0.1
25V
F
0.22F
5.5V
0.1
25V
F
22p
50V
CH
0.1
25V
F
0.1
25V
F
0.01
25V
B
0
10k
680k
47
16V
10k
10k
1
0
k
4
.7
k
1
0
0
k
100k
10k
10k
1k
10k
1k
0
1
0
k
10k
10k
4.7k
10k
10k
1k
4.7k
2.2k
4.7k
MB90553APF
-G-223-BND
10k
10k
10k
4.7k
0
47
16V
0
47
47
0
0
0
14
14
TA-VE25
3-7.
IC Pin Function Description
• IC203
MB90553ABPF-G-223-BND SYSTEM CONTROL (DISP Board)
Pin No.
1
2
3
4
5
6
7
8
9, 10
11
12 to 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
51
52
53
54
55
56
57
58
I/O
O
O
O
O
O
O
O
—
—
—
—
—
O
I
O
O
—
O
O
—
—
—
O
I
—
—
—
—
—
I
I
—
—
I
I
—
I
—
I
I
I
I
—
I
I
I
—
—
Pin Name
LED1
LED2
LED3
LED4
LED5
LED6
LED7
P27
P30, P31
VSS
P32 to P37
P40
FALSH DATA OUT
COMOUT
FALSH DATA IN
COMIN
FL CLK
FL DATA
VCC
FL BK
FL LATCH
P47
C
P50, P51
BUSYOUT
BUSYIN
P54, P55
AVCC
AVRH
AVRL
AVSS
KEY INPUT1
KEY INPUT2
P62, P63
VSS
JOGA
JOGB
P66, P67
STOP
P DOWN
MD0
MD1
MD2
HST
SIRCS
IRA
IRB
POWER SW
SELA
SELB
Description
MUTING LED control signal output “L” : ON
TV LED control signal output “H” : ON
VIDEO LED control signal output “H” : ON
AUX LED control signal output “H” : ON
SAT LED control signal output “H” : ON
DVD LED control signal output “H” : ON
SIR LED control signal output “L” : ON
General purpose I/O port Not used (ground)
General purpose I/O port Not used (ground)
Ground
General purpose I/O port Not used (ground)
General purpose I/O port Not used (ground)
UART serial data output to the subwoofer unit and flash programming port
UART serial data input from the subwoofer unit and flash programming port
Clock output to the fluorescent indicator tube (FL201)
Serial data output to the fluorescent indicator tube (FL201)
Power supply
Blanking signal output to the fluorescent indicator tube (FL201)
Latch signal output to the fluorescent indicator tube (FL201)
Not used (ground)
Capacitor connection terminal for regulating the power supply
Not used (ground)
Busy signal output to the subwoofer unit
Busy signal input from the subwoofer unit
Not used (ground)
A/D converter power supply
A/D converter external reference voltage source
A/D converter external reference voltage source
A/D converter power supply
Key signal input from the function switches (S202 to S206)
Key signal input from the function switches (S202 to S209)
General purpose I/O port Not used (ground)
Ground
Rotary encoder data input from the master volume (RV201)
Rotary encoder data input from the master volume (RV201)
General purpose I/O port Not used (ground)
AC OFF signal input “L” : AC OFF
Not used (fixed at “H”)
Operation mode setting input (normally fixed at “H”)
Operation mode setting input (Vcc)
Operation mode setting input (normally fixed at “L”)
Hardware standby signal input (connected to RESET)
Not used (ground)
Remote control receiver data input from the IC201
Remote control receiver data input from the IC204
Power key input
General purpose I/O port Not used (ground)
General purpose I/O port Not used (ground)
Pin No.
59 to 66
67
68
69
70
71 to 74
75
76
77
78 to 80
81
82
83
84
85 to 92
93 to 100
I/O
—
O
O
O
O
—
O
—
I
—
—
—
—
—
—
—
Pin Name
P80 to P87
CTLA
CTLB
CTLC
CTLD
P94 to P97
RST OUT
PA1
RESET
PA2 to PA3
VSS
X0
X1
VCC
P00 to P07
P10 to P17
Description
General purpose I/O port Not used (ground)
Analog input selection signal output
Digital input selection signal output
Digital input selection signal output
Digital input selection signal output
General purpose I/O port Not used (ground)
Subwoofer reset signal output “L” : reset
General purpose I/O port Not used (ground)
Reset signal input
General purpose I/O port Not used (ground)
Ground
Oscillation pin
Oscillation pin
Power supply
General purpose I/O port Not used (ground)
General purpose I/O port Not used (ground)
15
TA-VE25
3-8. IC Block Diagram
— MAIN Board —
IC156 MC14052_BDR2
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.
•
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.
16
TA-VE25
4-1. Main Section
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
1
4-241-765-01 WINDOW (TOP), INDICATION
2
4-241-781-01 CASE, UPPER
3
1-685-833-11 LED BOARD
4
4-241-782-01 CASE, LOWER
5
3-077-427-01 FOOT
6
4-241-784-01 COVER (CORD)
7
A-4729-950-A MAIN BOARD, COMPLETE
8
4-951-620-01 SCREW +BVTP 2.6X8
9
3-070-489-01 LABEL, PATCH
#1
7-685-646-79 SCREW +BVTP 3X8 TYPE2 IT-3
1
2
3
8
4
5
5
6
7
9
#1
#1
#1
#1
#1
#1
#1
#1
#1
#1
#1
#1
#1
#1
front panel assy section
not supplied
not supplied
not supplied
a
b
a
b
not supplied
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