TCL 28D2900, Service Manual

1

1

2

2

3

3

4

4

5

5

6

6

7

7

8

8

9

9

10

10

11

11

12

12

13

13

14

14

15

15

16

16

D

D

C

C

B

B

A

A

VBG

CP

X

T

A

L

_

I

V

A

G

C

S

VBAT

LNB_PW

DET

RFIN

V

B

A

T

1

Single ended:75ohm
(W=21mil,Gap=18mil)
2-Layers

Close to RT710

Close to RT710

Bead: 

1k@100M & 400ohm
@400M,300mA& R(dc)<0.8 ohm

IF_IP

IF_QP

D_IFAGC/

S

2

_

S

D

A

S

2

_

S

C

L

CS20
NC/

CS21
NC/

CS22
NC/

CS23

68pF-0402-NPO-±5%-50V

CS24

100pF-0402-NPO-±5%-50V

CS19

100pF-0402-NPO-±5%-50V

CS25

100pF-0402-NPO-±5%-50V

RS36

0ohm-0402-±5%-1/16W

RS37

10Kohm-0402-±5%-1/16W

RS38

5K6ohm-0402-±1%-1/16W

CS42

330pF-0402-NPO-±5%-50V

CS43

6800pF-0402-X7R-±10%-50V

CS40

2.2uF-0402-X5R-±20%-6.3V

CS30

47pF-0402-NPO-±5%-50V

M_SDA

M_SCL

3V3_Tun_S2

RT5

1K8ohm-0402-±5%-1/16W

CT19

6800pF-0402-X7R-±10%-50V

CT15

330pF-0402-NPO-±5%-50V

CT7

0.1uF-0402-X5R-±20%-16V

RT1

NC/10Kohm-0402-±5%-1/16W

CT2

0.1uF-0402-X5R-±20%-16V

CT3

0.022uF-0402-X7R-±10%-16V

CT4

1.2pF-0402-NPO-±0.25pf-50V

3V3_Tun

CT1

0.1uF-0402-X5R-±20%-16V

LT1

SDCL1005C68NJTDF(68nH-0402±5%-C)

3V3_Tun

CT16

0.1uF-0402-X5R-±20%-16V

3V3_Tun

CT14

0.1uF-0402-X5R-±20%-16V

LT9

SDCL1005CR18JTDF(180nH-0402±5%-C)

CT8

0.1uF-0402-X5R-±20%-16V

3V3_Tun

T-IF-AGC_R840

IFn_R840

IFp_R840

LT3

SDCL1005C2N7STDFM01

RFIN2

2

TF1

3

TF2

4

DECT1

5

SCL

6

S

D

A

7

A

V

D

D

8

AVDD

18

VOP

17

VON

16

VAGC

15

D

V

S

S

1

0

C

P

9

RFIN

1

A

V

D

D

2

4

T

F

H

2

3

T

F

L

2

2

G

P

IO

2

1

V

B

G

2

0

D

E

T

2

1

9

GND

25

D

V

D

D

1

1

X

T

A

L

_

I

1

2

VAGC2

14

XTAL_O

13

UT1
R840

LT2

SDCL1005CR27JTDF(

顺络

)

1

3

2

DT1

BAV99-BR

RF_INPUT

LT4

SDCL1005CR27JTDF(

顺络

)

TUNER_SDA

TUNER_SCL

YT1

16MHz-±20PPM-20PF-HC-49S-SMD-JWT

CT5

470pF-0402-X7R-±10%-50V

M_SDA

M_SCL

XT AL_I

RT2

220ohm-0402-±5%-1/16W

CT9

1000pF-0402-X7R-±10%-50V

CT29

10uF-0603-X5R-±20%-6.3V

CT25

NC/10uF-0603-X5R-±20%-6.3V

CT27

10uF-0603-X5R-±20%-6.3V

5V_M

3V3_Tun

3V_Tun

VI

3

VO

2

A

D

J

1

VO

4

UT2
LC1117CLTR33

3V3_Tun_S2

LIFP

LIFN

TUNER_SCL

TUNER_SDA

RZ1

470ohm-0402-±5%-1/16W

RZ2

470ohm-0402-±5%-1/16W

IFp_R840

IFn_R840

VAGCS

IFp

IFn

DET

2

LT

3

VBAT

4

VBG

5

V

D

D

6

C

P

7

VON

14

VOP

15

VOPQ

12

VONQ

13

V

A

G

C

1

0

GND

1

R

F

_

IN

2

0

G

N

D

1

9

V

B

A

T

1

8

S

D

A

1

7

S

C

L

K

1

6

X

T

A

L

_

O

9

X

T

A

L

_

I

8

CLK_OUT

11

EPAD

21

U3

RT710

X

T

A

L

_

O

_

7

1

0

RT4

0ohm-0402-±5%-1/16W

X

T

A

L

_

I_

7

1

0

CT6

220pF-0402-NPO-±5%-50V

LT7

SDCL1005CR18JTDF(180nH-0402±5%-C)

LT14

SDCL1005C22NJTDF

CT18

0.1uF-0402-X5R-±20%-16V

CT20

0.1uF-0402-X5R-±20%-16V

CT33

180pF-0402-NPO-±5%-50V

LT13

SDCL1005CR18JTDF(180nH-0402±5%-C)

RT12

100ohm-0402-±5%-1/16W

RT13

100ohm-0402-±5%-1/16W

CT13

0.1uF-0402-X5R-±20%-16V

CT34

0.1uF-0402-X5R-±20%-16V

LT17

FCM1005KF-121T06(120ohm-500mA)

LT15

FCM1005KF-121T06(120ohm-500mA)

S2_IP

S2_QP

1

3

2

DT2

BAV99-BR

CT26

0.1uF-0402-X5R-±20%-16V

CT28

0.1uF-0402-X5R-±20%-16V

CS33

0.1uF-0402-X5R-±20%-16V

CS34

0.1uF-0402-X5R-±20%-16V

CS38

0.1uF-0402-X5R-±20%-16V

CS37

0.1uF-0402-X5R-±20%-16V

CS39

0.1uF-0402-X5R-±20%-16V

CS41

0.1uF-0402-X5R-±20%-16V

CT47

1uF-0402-X5R-±20%-6.3V

LT11

0ohm-0402-±5%-1/16W

LT12

0ohm-0402-±5%-1/16W

CT23

22pF-0402-NPO-±5%-50V

CS28

4.7pF-0402-NPO-±5%-50V

CS32

4.7pF-0402-NPO-±5%-50V

RZ10

0ohm-0402-±5%-1/16W

RZ13

0ohm-0402-±5%-1/16W

CS26

39pF-0402-NPO-±5%-50V

CS27

39pF-0402-NPO-±5%-50V

CS35

NC/0.1uF-0402-X5R-±20%-16V

CS36

NC/0.1uF-0402-X5R-±20%-16V

IF_IN
IF_QN

RZ11

NC/0ohm-0402-±5%-1/16W

RZ12

NC/0ohm-0402-±5%-1/16W

S2_IN
S2_QN

CS29

NC/4.7pF-0402-NPO-±5%-50V

CS31

NC/4.7pF-0402-NPO-±5%-50V

CT24

22pF-0402-NPO-±5%-50V

RF

RF_IN

1

GND

2

GND

3

GND

4

GND

5

GND

6

GND

7

T1

T-25×14.5×9-IEC14.5-LHD(3

只脚

)

1

2
3
4
5

RF

GND

GND

GND

GND

T3

T-14.5×25×9-F14.5-LHD

CT48

NC/10uF-0603-X5R-±20%-6.3V

T-IF-AGC_R840

RT10

10Kohm-0402-±5%-1/16W

CT22

0.1uF-0402-X5R-±20%-16V

D_IFAGC/

D_IFAGC

D_IFAGC/

RT11

1Kohm-0402-±5%-1/16W

CT21

0.1uF-0402-X5R-±20%-16V

YT2

NC/16MHz-±20PPM-20PF-HC-49S-SMD-TKD

CT46

1uF-0402-X5R-±20%-6.3V

CT30

NC/10uF-0603-X5R-±20%-6.3V

12V

12V_OFF

DVD_EN

QM6

KMBT3904

RM9

4K7ohm-0402-±5%-1/16W

GND

RM10

100Kohm-0402-±5%-1/16W

RM12

10Kohm-0402-±5%-1/16W

RM11

10Kohm-0402-±5%-1/16W

GND

CM7

0.1uF-0402-X5R-±20%-16V

D

G

S

QM5

ME2325-G

CZ2

0.1uF-0402-X5R-±20%-16V

DZ1

1N5819-SMA

CZ7

1uF-0603-X5R-±10%-25V

CZ8

10uF-1206-X5R-±10%-25V

+

LZ3

DSB5845-220M-LF

DZ4

1N5819-SMA

DZ3

1N5819-SMA

CZ23

10uF-1206-X5R-±10%-25V

LNB_PW

CZ9

0.01uF-0402-X7R-±10%-50V

GND

GND

GND

12V_OFF

GND

DISEQC_OUT

EXT M

RZ9

NC/10Kohm-0402-±5%-1/16W

RZ3

10Kohm-0402-±5%-1/16W

RZ5

100ohm-0402-±5%-1/16W

RZ7

NC/10Kohm-0402-±5%-1/16W

RZ8

10Kohm-0402-±5%-1/16W

LNB_PW_13V/18V_SEL

RZ4

100ohm-0402-±5%-1/16W

LNB_PWEN

RZ6

4K7ohm-0402-±5%-1/16W

GND

CZ1

10uF-0805-X5R-±20%-16V

VIN

4

EN

5

COMP

7

SEL

6

G

N

D

E

P

A

D

LNB

1

B

O

O

S

T

2

L

X

3

TONE

8

RT5047

UZ1

DC-DC

芯片

,IC DC-DC,16V,700KHz,SOP-8,SMD,RT5047GSP,Richtek

LZ1

HCB1608KF-121T20(120ohm-2000mA)

LZ4

HCB1608KF-121T20(120ohm-2000mA)

RZ14

NC/4K7ohm-0402-±5%-1/16W

RZ15

4K7ohm-0402-±5%-1/16W

CZ3

NC/10uF-1206-X5R-±10%-25V

3V3_M

+

EZ1

铝电解电容

,CAP AL,25V,100uF,±20%,RK,P,2.5mm,6.3×7.0,DIP,TP,XL

LT5

磁珠

,BEAD,1000ohm,0402,300mA,SMD,TRAY,GZ1005U102CTF(1000ohm-300mA),sunlord

LT6

磁珠

,BEAD,1000ohm,0402,300mA,SMD,TRAY,GZ1005U102CTF(1000ohm-300mA),sunlord

+

EZ2

100uF-16V-±20%-5×11-105

℃

-

黑底白字

-

编带

-F=2.5-XF