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Decoder - Akai CFTD2052 Service Manual

Lcd color television/dvd video player
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A
B
8
FROM/TO POWER
(CP3805)
CD804
CU262501
1
5V
2
5V
3
GND
4
GND
5
SCL
6
SDA
7
P.CON2.5V REG IC
P.CON3.3V REG IC
IC804
IC806
KIA78D33F
IN
1
IN
GND
OUT
3.3
1
2
3
5.1
0
3.3
6
P.CON1.8V REG IC
P.CON3.3V REG IC
IC805
IC802
KIA78D33F
IN
5
1
IN
GND
OUT
3.3
1
2
3
5.1
0
3.3
FROM/TO MICON
CP806
(CP103)
00_6232_007_102_800
4
1
C
2
GND
3
4
GND
5
U/G
6
GND
7
V/B
CP805
(CP102)
00_6232_020_102_800
1
CVBS1
2
GND
3
CVBS2/Y
4
GND
3
5
SCALER_V_OUT
6
7
8
GND
9
OSD_R
10
GND
11
OSD_G
12
GND
13
OSD_B
14
GND
15
OSD_Y
16
GND
2
17
OSD_V
18
OSD_H
19
GND
20
CCD_SW
CD807
(CP104)
CU223002
1
OSD_CLK
L840
W5T_20X10X10A
2
GND
CAUTION
:SINCE THESE PARTS MARKED BY
1
CRITICAL FOR SAFETY,USE ONES
DESCRIBED IN PARTS LIST ONLY
A
B
G-27
C
DECODER SCHEMATIC DIAGRAM
CVBS1/CVBS2/Y
P.CON+5V
CCD_SW
AV SW IC
IC601
MM1504XNRE
P.CON+5V
C676
5.8
CVBS1
Vin1
SW1
1 B
GND
0
GND
GND
V.OUT
SCL
5.3
C677
CVBS2/Y
SDA
Vin2
Vcc
1
B
P.CON+3.3V
PQ070XZ01ZPH
P.CON+5V
BUFFER
Q603
5.1
KTC3875S_Y_RTK
R613
4.5
CVBS1
NLV25
680
L609
3.9
V.C
OUT V.ADJ
GND
6
2
3
4
5
1.5uH
3.3
2.5 NC
1.3
0
R816
1K +-1%
R812
GND
P.CON+2.5V
15K
P.CON+5V
BUFFER
Q602
KTC3875S_Y_RTK
5.1
R609
CVBS2/Y
NLV25
4.5
680
L608
3.9
0.56uH
PQ070XZ01ZPH
W807
P.CON+2.5V
V.C
OUT V.ADJ
GND
6
2
3
4
5
3.2
1.8
0.9
0
NC
R817
R813
1K +-1%
12K
P.CON+1.5V
37
W802
C
C
GND
NC
U/G
V/B
C679
40
R623
U/G
39P
CH
CVBS1
1K
C680
330P
CH
CVBS2/Y
C678
39P
CH
CVBS1/CVBS2/Y
NC
NC
R619
1.8K
OSD_R
R620
1.8K
OSD_G
41
R621
R624
V/B
1.8K
OSD_B
1K
R622
1.8K
OSD_Y
OSD_V
OSD_H
CCD_SW
GND
OSD_CLK
GND
ARE
ATTENTION
:LES PIECES REPAREES PAR UN
ETANT
DANGEREUSES AN POINT DE VUE SECURITE
N'UTILISER QUE CELLS DECRITES
DANS LA NOMENCLATURE DES PIECES
C
D
E
(LCD PCB)
BUFFER
Q604
3.3
KTC3875S_Y_RTK
5.0
R618
5.0
2.1
470
1.5
4.0
38
SCALER IC
IC801

(1/5 DECODER)

TC90288XBG
R603
2.2
Y3
YCLAMP2
1.5K
R604
1.8
Y4
YCLAMP1
1.5K
C624
0.9
AF4
Y_BIASAD
39
0.01 B
1.7
C625
AF5
YVREFT
0.01 B
0
AF6
YAD_VSS
C601
1.8
AD5
CVBS1IN
50V
0.47
V-S
2.5
AB6
YAD_VDD
C604
2.7
AD7
CVBS2IN
50V
0.47
V-S
C626
1.3
AB7
YVREFM
0.01 B
0.8
C634
AF7
YVREFB
0.01 B
0.8
C635
AB8
C_BIASAD
0.01 B
1.7
C636
AD8
CVREFT
0.01 B
0
AF9
CAD_VSS
C606
1.3
AE9
CIN
0.01 B
2.5
AB9
CAD_VDD
0.8
AC9
GREENIN
NC
C627
0.8
AD9
CVREFB
0.01 B
0.9
C628
AB10
C2_BIASAD
0.01 B
1.8
C629
AD10
C2VREFT
0.01 B
0
AF10
C2AD_VSS
C608
1.8
AE11
CBIN
0.01 B
2.5
AB11
C2AD_VDD
0.8
AC11
BLUEIN
NC
C630
0.01 B
0.8
AD11
C2VREFB
C631 0.01 B
0.9
AB12
C3_BIASAD
C632
1.8
AD12
C3VREFT
0.01 B
0
AF13
C3AD_VSS
C607
1.8
AE13
CRIN
0.01 B
2.5
AB13
C3AD_VDD
0.8
AC13
REDIN
NC
C633
2.2
AD14
C3VREFB
0.01 B
NOTE:THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
D
E
F
G
BUFFER
2.5
Q601
DA_VDD1
AE1
KTC3875S_Y_RTK
2.5
1.0
R606
1.5K
DA_OUT1
AE2
1.0
0.9
1.1
C637
0.01 B
DABIAS11
AF3
1.5
C638 0.01 B
DAVREF1
AE3
0
DA_GND1
AF2
2.5
PLL1AVDD
AB5
C639
0.9
CKIN1
AC2
0.01 B
1.2
C640
FIL1
AC1
0.0015 B
0
PLL1AVSS
AD1
36
NLCV32
L603
3.3
XO_VDD
Y2
C647
NLV25
100uH
1.5
L602
XO_V_IN
Y1
22P CH
2.8
1.5uH
XO_V_OUT
AA1
R607
C646
C648
2.2
XO_VSS
AB1
18P CH
100
0.001 B
2.5
DA_DVDD1
AD2
0
DA_DVSS1
AE4
2.5
DA_OUT2
AC14
0
DA_DVDD2
AC15
2.2
DA_DVSS2
AB15
2.5
DA_VDD2
AB14
0
DA_GND2
AF14
1.3
C641
0.01 B
DABIAS21
AF15
1.5
C642
0.01 B
DABIAS22
AE15
1.5
C643
0.01 B
DAVREF2
AD15
2.5
PLL2AVDD
AB16
C644
1.3
FIL2
AE16
0.0015 B
0
PLL2AVSS
AF16
COLOR SIGNAL
NOTE:THE DC VOLTAGE EACH PART WAS
PLAYBACK VIDEO SIGNAL
MEASURED WITH THE DIGITAL TESTER
DURING PLAYBACK.
PLAYBACK LUMINANCE SIGNAL
LUMINANCE SIGNAL
F
G
H
8
7
NLV32
L604
22uHNLV32
P.CON+2.5V
6
TO LVDS
GND
5
P.CON+5V
P.CON+3.3V
FROM/TO SCALER 2
GND
P.CON+3.3V
P.CON+2.5V
P.CON+1.5V
SCALER_V_OUT
SDA
SCL
SCALER_V_OUT
4
FROM/TO SCALER 1
OSD_R
OSD_G
OSD_B
OSD_Y
OSD_V
OSD_H
3
OSD_CLK
GND
2
GND
PCB340
TEDB66
B.SIGNAL
1
G.SIGNAL
R.SIGNAL
H
G-28

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