Akira 30kxstr, 30kxstp schematic
LCT TV
Service Manual
-2 -
MODEL:
LCT-30KXSTP
Model No.: LCT-30KXSTP
Version: 1.0
-3 -
CONTENTS
SPECIFICATION..................................................................................................................................... 4
CIRCUIT DIAGRAM.............................................................................................................................. 7
PCB BOARD .........................................................................................................................................25
EXPLODED VIEW................................................................................................................................ 32
PART LIST............................................................................................................................................. 33
Model No.: LCT-30KXSTP
Version: 1.0
-4 -
SPECIFICATION
FEATURES:
Power supply: AC 100~240V 50/60Hz
Multi TV system: PAL BG /DK /I /M /N, NTSC M/N, SECAM BG /DK /LL’
Multi standard sound processors: NICAM, FM-stereo, BTSC
Multi Video system: PAL /NTSC /SECAM
Versatile input sources: TV, Video, S-Video, Scart, YcbCr, YpbPr, DVI, PC (analog)
Full function remote controller
Excellent sound effect with volume, trable, bass, balance AVC adjustable, Audio mode, special
effect, equalizer
Smart sound & picture mode set: Personal, cinema, speech, music, standard, personal, bright, mild
Adaptive 2/4 line comb filter for PAL /NTSC
VTR for weak and distoreted signal from video tape recorder
10 pages teletext
Automatically turn off the set when signal absent longer than 10 minutes.
135 channels
Blue screen display
CC /V-CHIP
Freeze picture
Program label
Time off/ On
Screen size change
Standby
Channel swap
Model No.: LCT-30KXSTP
Version: 1.0
-5 -
GENERAL SPECIFICATION
PART 1: TV SET
200watt (max) Power consumption
≤3watt (stby)
TV receive system PAL D/K I B/G M/N SECAM L/L’ D/K B/G
NTSC M/N
Video system Multi PAL /SECAM /NTSC
Vision intermediate frequency 38.9MHz, 33.95MHz (L’)
Inter-carrier frequency
Channels received
Tuning mode PLL SYSTEM
AV In /Out
AV In /Out specification
Antenna input impedance 75Ω
Audio output power 6W x 2 (1KHz, 0.5Vrms, 10%THD)
Hand set power supply Battery 1.5V (AAA) x 2
5.5 MHz (B/G)
6.0 MHz (I)
6.5 MHz (D/K, L/L’)
5.85 MHz (NICAM B/G, D/K, L)
6.55 MHz (NICAM I)
5.74MHz (GERMAN STEREO)
4.5MHz (BTSC)
BG /DK/ L: 34.47MHz CHROMA if frequency
L’: 38.38MHz
VHF-L 46.25 - 163.25MHz
VHF-H158.25 - 466.25MHz
UHF 471.25 - 855.25MHz
1 AV in, 1 S-Video In
21 pin Scart in, YcbCr In, YpbPr IN
1 AV out
Y/C IN-Y: 1.0± 0.2
Video In ---1.0 ±0.2V
Audio In --- Approx, 500mV
Video Out --- 1.0±0.2V
Audio Out ---Approx, 400mV
RGB In: ≤0.7V
English /Spanish /Italian OSD language
Russian /French
Continue shine POWER ON LED indicator
Flash standby
p-p
75Ω C:0.7V
p-p
75Ω
p-p
75Ω
p-p
p-p
75Ω
Model No.: LCT-30KXSTP
Version: 1.0
-6 -
PART 2: PC RESOLUTION
Analog RGB In 0.7V
DVI In 0.7V
RESOLUTION V.Feq (Hz) h. Feq. (Hz) Graphic Mode
640 x 480 59.940 31.469 VGA
800 x 600 60.317 37.879 VGA
1024 x 768 60.004 48.363 VGA
1280 x 768 59.870 47.776 VGA
PART 3: PANEL
Brand & model AU /T290XW01-V5 OR CHIMEI /V296W1-L05
Resolution 1280 x 768
Displayable color 16.7MHz
Surface Hard coating + Anti-Radiation
Viewing Angle (H/V) 170o (Hor) /170o (Ver)
Display Response Time 16ms
Contrast Ratio 1:600
Brightness 550nit
Aspect 16:9
Lamp Life 50,000Hrs
Bad Pixel Quality (Bright /Dark /Total) 2 /6 /8
p-p
p-p
Model No.: LCT-30KXSTP
Version: 1.0
CIRCUIT DIAGRAM
PC
YPrPb
AV IN
S_VIDEO IN
YCrCb
SCART
TUNER
U24
U10
SWITCH
DVI
TV AUDIO
AV AUDIO
SCART AUDIO
HDTV AUDIO
POWER
U3
SYNC
VIDEO
SWITCH
U6
TELETEXT CCD/VCHIP
EEPRAM
U4
U1
24VDC
12VDC
11----20VDC
5VDC
5VDC_SB
3VDC_SB
STAND BY
DECODER
U11
DECODER
VIDEO
ADC
DAC
AUDIO
-7 -
U7U8
UC
POWER
AMP
U14
BUFFER
U9
SDRAM
DEINTERLACER
U18
UB
BUFFER
U21
SWITCH
I2C
U5
EEPRAM
FLASH MEMERY
U17
CPU/SCALER
UD
RESET
U2
BUFFER
UE
AMP
LVDS
U19
LCD PANEL
Model No.: LCT-30KXSTP
Version: 1.0
-8 -
AVCC
R1
96
510R
VCC
DVI1
DATA2/4_SHLD
DDC_CLK
DDC_DATA
A_VSYNC
DATA1/3_SHLD
H_PLUG_DET
DATA0/5_SHLD
CLK_SHLD
A_GREEN
A_HSYNC
DVI
IC1
VIN3VOUT
LT1117-3.3V
SHELL1
DATA2-
DATA2+
DATA4-
DATA+
DATA1DATA1+
DATA3DATA3+
+5V
GND
DATA0DATA0+
DATA5DATA5+
CLK+
CLK-
A_RED
A_BLUE
A_GND
SHELL2
1
GND
31
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(C1)
26(C2)
27(C3)
28(C4)
29(C5)
32
47uF/16V
90
91
85
86
R10
1K_NS
80
81
93
94
100
4
1
7
3
9
2
99
CVCC
C17
C18
C19
0.1
0.1
0.1
GSCLV
DDCDV
DVC1
L2
2
112
22uH
L3
2
C2
C1
0.1
22uH
L4
22uH
L5
22uH
GSCLV
DDCDV
7,9
3,7,9
9
OVCC
PVCC
AVCC
CVCC
OVCC OVCC OVCC OVCC OVCC CVCC CVCC CVCC
C11
C12
C13
0.1
0.1
0.1
DIGSEL
PD
C14
0.1
CVCC
R2
1K
R187
0
C15
C16
0.1
0.1
AVCC AVCC AVCC AVCC AVCC PVCC PVCC
C3
C4
C5
C7
0.1C60.1
0.1
0.1
0.1C80.1C90.1
OVCC CVCC PVCC AVCC
18
6
OVCC578OVCC457OVCC343OVCC229OVCC1
EXT_RES
RX0p
RX0m
RX1p
RX1m
RX2p
RX2m
RXCp
RXCm
OCK_INV
PIXS
DFO
STAG_OUT
ST
PDO
PD
RSVD
OGND119OGND228OGND345OGND458OGND576GND15GND239GND368PGND98AGND179AGND283AGND387AGND489AGND5
97
82
VCC367VCC238VCC1
PVCC
U1
AVCC495AVCC388AVCC284AVCC1
8
SCDT
10
QE0
11
QE1
12
QE2
13
QE3
14
QE4
15
QE5
16
QE6
17
QE7
20
QE8
21
QE9
22
QE10
23
QE11
24
QE12
25
QE13
26
QE14
27
QE15
30
QE16
31
QE17
32
QE18
33
QE19
34
QE20
35
QE21
36
QE22
37
QE23
49
QO0
50
QO1
51
QO2
52
QO3
53
QO4
54
QO5
55
QO6
56
QO7
59
QO8
60
QO9
61
QO10
62
QO11
63
QO12
64
QO13
65
QO14
66
QO15
69
QO16
70
QO17
71
QO18
72
QO19
73
QO20
74
QO21
75
QO22
76
QO23
ODCK
DE
VSYNC
HSYNC
CTL1
CTL2
CTL3
92
SII161
R11
44
46
47
48
40
41
42
RP1
RP3 47
RP2 47
RP4
RP5 47
RP6 47
1
1
SCDT
1
47
47
47
T1
2
GB0
GB1
GB2
GB3
GB4
GB5
GB6
GB7
GG0
GG1
GG2
GG3
GG4
GG5
GG6
GG7
GR0
GR1
GR2
GR3
GR4
GR5
GR6
GR7
R12
R13 47_NS
T2
T3
GCLK
GFBK
6,7,8
GVS
GRAPHIC
47
DVI-DE
Model No.: LCT-30KXSTP
Version: 1.0
-9 -
CN2
CON12
12
S-B
11
SSGND
10
S-G
9
SSGND
8
S-R
7
SSGND
6
SW
5
RGB/V
4
BLANKING
3
VIN
2
SSGND
1
SW
RGB/V
BLANKING
VIN
S-B
S-G
S-R
Model No.: LCT-30KXSTP
Version: 1.0
-10 -
MEM_BUS
9,10
PWCS0#
PWD0
PWD1
PWD2
PWD3
PWD4
PWD5
PWD6
PWD7
U2
11
CLK
VCC
3
1D
4
2D
7
3D
8
4D
13
5D
14
6D
17
7D
18
8D
74HC374
GND
1Q
2Q
3Q
4Q
5Q
6Q
7Q
8Q
OE
VDD1
20
2
5
6
9
12
15
16
19
1
10
MUTE
1,7,9
7
7,1 7,1 7,1
VCC VCC VCC VCC VCC VCC VCC VCC VCC VCC VCC
2
1
D1
K
A
BAV99L
DDCD
R29
10K
3
D2
BAV99L
DDCC
R30
10K
D3
BAV99L
C251
15P
RED
D4
C252
15P
BAV99L
CON5 is for LCD control (J24's) supplement,
11
LCDON
11
BKLON
4,9
PD
LVDSON
12
R38
LED1
680R
R39
680R
R40
GREEN
DIGSEL 1
0
GREEN
DIODE
D5
BAV99L
R253
MUTE
BLUE
15P
CN5
1
2
CON2
D6
BAV99L
R34
7
R44
2K
BUF-HS
BUF-VS
BUF-HS
D7
BAV99L
22R
7
HSYNC
R35
BUF-VSLED2
22R
BUF-VS
R45
2K
R36
C25
2.2K
22P
C26
R37
22P
2.2K
R184 1K
VIN
VIN
VIN4
VIN4
YSOG
YSOG
7
BUF-HS
U3
1
2
3
4
5
6
7 8
74hc14a
U21
1
0Y
VDD
2
2Y
3
YOUT
4
3Y
XOUT
5
1Y
6
INH
7
VEE
VSS8B
CD4052
VCC
2X
1X
0X
3X
R223
10K_NS
14
13
12
11
10
9
VCC
C234
16
15
14
13
12
11
10
A
9
VIN YSOG
VFF
0.1
A
B1
R225
10K_NS
R224
10K_NS
DEN
DDEN
DVI-DE
A
B1
VSYNC
7
Model No.: LCT-30KXSTP
Version: 1.0
-11 -
VOUT
5
CN3
CON6
6
5
4
3
2
1
5,6,9,10,11
S-CIN
SAGND
S-YIN
SAGND
AV-IN
SAGND
HD-Y1
HD-Y
HD-Pb1
HD-Pb
HD-Pr1
HD-Pr
VOUT
RST1#
SDA
SCL
V-GRN
V-BLU
5
V-RED
V-BOX
X
Y
2
GND
X
Y
2
GND
X
Y
2
GND
SDA
SCL
SCL
14
15
R213
10K
R214
10K
13
VIN3
SCL
SDA
VIN2
CIN
VIN1
VIN4
Y2/G2
U2/B2
V2/R2
Y1/G1
U1/B1
V1/R1
FBIN1
XTALI
XTALO
CLK560FPDAT58CLK2024ASGND7ASGND64GND11APGND25APVDD26PLGND30YGND35CGND46SPGND51AFGND65ISGND68ISGND77ISGND80I2CSEL
R215
R217
10K
10K
R216
R218
10K
10K
2
CN7
2
1
CON2 TGND
AV-IN
G
B
R
1
1
1
SDA
SCL
2
TV-VIN
S-CIN
S-YIN
VIN4
R52 75
SSGND
R53 75
SSGND
R54 75
VDD1
SSGND
5
6
7
8
U5
SDA
SCL
TEST
VCC
GND
4
3
A2
2
A1
1
A0
V-GRN
V-BLU
V-RED
V-BOX
YY
YCb
YCr
The U5 24C16 is to store TV channel data and other configuration data
C53
0.1
3.3uH
3.3uH
L11
3.3uH
VIN4
TGND
SAGND
YSOG
R56 75L9
R57 75L10
R55
C58
20pF
C59
20pF
R49 75
R50 75
R51 75
R58 75
75
GND
C55
330pF
C56
330pF
C57
330pF
C27
0.68
74
C28
0.68
73
C31
1nF
71
C29
0.68
72
C30
0.68
75
C37
0.22
5
C38
0.22
4
C39
0.22
6
2
1
3
79
62
X1
63
20.25M
+12
R211
10K
YY YCb YCr S-B S-G S-R
R212
10K
24C16
C32
1nF
VDD
C36
0.22
VOUT
12
10
VDD
VDDCAP9GNDCAP
70
RST#
U4
VPC3230D
C44
47nF
R221
10K
R222
10K
C33
1nF
GND
R219
10K
R220
10K
VDD +5
29
52
36
45
CVDD
YVDD
PLVDD
SPVDD
VCC is 5V power supply from the power socket VDD is 3.3V digital power supply, +5 is 5V
analog power supply for U1 VPC3230D; VTT is 5V power supply for U2 FI1256MK 2 (TV Tuner)
59
69
AFVDD
GND
76
VREF
78
VREF
66
VRT
ISVDD
VSTBY
FFIE
FFWE
FFRST
FFRE
FFOE
Y7
Y6
Y5
Y4
Y3
Y2
Y1
Y0
UV7
UV6
UV5
UV4
UV3
UV2
UV1
UV0
LLC2
LLC
AVO
HCLP
HS
VS
INTLC
TEST
VGAV
OE#
67
C42
47nF
19
20
21
22
23
31
32
33
34
37
38
39
40
41
42
43
44
47
48
49
50
27
28
54
55
56
57
53
16
17
18
S-R
S-B
47
47
L38
11R/100MHZ
S-R
YCr
S-B
B
YCb
RP7
RP8
U22
BY
BX
CY
C
CX
INH
VEE
VSS C
CD4053
GNDGND GND GND
L39
11R/100MHZ
VDD
AY
AX
C43
C45
47nF
10uF
VINY7
VINY6
VINY5
VINY4
VINY3
VINY2
VINY1
VINY0
VINCK
VHREF
VINHS
VINVS
VIODD
R
B
G
A
S-G
S-G
YY
A
B
R185 10K
C46
10uF
VIDEO BUS
+12
+5
(VSTBY)
C47
C48
10uF
0.1
GNDGND
VID_BUS
VDD
C49
0.1
+5
C40
0.22
Q9
R186 1K
C76
9014
0.1
5,6,8,9
C52
C51
C50
0.1
C34
1nF
S/Y
0.1
0.1
C35
C41
1nF
0.22
GND
A.1
Model No.: LCT-30KXSTP
Version: 1.0
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