background image

5

5

4

4

3

3

2

2

1

1

D

D

C

C

B

B

A

A

MUTE_AMP

MUTE

AMP-LIN

AMP_LIN

R_

L+

L_

R+

MUTE

HP CTRL

EAR_L

AMP-RIN

AMP_RIN

HP CTRL0

HP CTRL0

EAR_L

HP CTRL

EAR_LOUT

EAR_ROUT

R+

R_

L_

L+

R+

R_

L_

L+

5VA

5VU

5VU

MUTE_AMP

3

AMP_LIN

3

AMP_RIN

3

Title

Size

Document Number

Rev

Date:

Sheet

of

07.AMP

1.0

CVMV29L-F-12

Custom

7

7

Wednesday, April 24, 2013

Title

Size

Document Number

Rev

Date:

Sheet

of

07.AMP

1.0

CVMV29L-F-12

Custom

7

7

Wednesday, April 24, 2013

Title

Size

Document Number

Rev

Date:

Sheet

of

07.AMP

1.0

CVMV29L-F-12

Custom

7

7

Wednesday, April 24, 2013

Default  H
MUTE L

22n BOM NC

初始化低或一个下降沿

SD

HP-IN

一、

AB

类,桥式输出

工作模式

连续两个下降沿,
电平宽度在

1us

12us

之间

三、

AB

类,单端输出

二、

D

类,桥式输出

/

高电平

100us

以上

四、低功耗关断

系统上电即在

SD

设置两个下降沿,通过

HP-IN

电平变化,

即可实现模式二和三之间转换。

没有插入耳机时

HP CTRL

为低,

L_

L+

R_

R+

分别为反相输出,进入桥式模式;

插入耳机

HP CTRL

变为高,

L_

L+

R_

R+

分别为同相输出,进入单端模式。

D

类桥式输出

3W

条件下插入耳机,

L_

R_

峰峰值为

5.3V

R7

R8

选为

910R

C3

10uF

C3

10uF

R10
1K

R10
1K

R3

510R

R3

510R

J5

XH-4A_SPEAKER

J5

XH-4A_SPEAKER

ROUT+

1

ROUT-

2

LOUT-

3

LOUT+

4

C1

100nF

C1

100nF

R2
1K

R2
1K

C14

22nF/NC

C14

22nF/NC

C10

3.3nF

C10

3.3nF

R1

33K

R1

33K

CA2

470uF

CA2

470uF

C2

22nF/NC

C2

22nF/NC

L1

1000R/FB

L1

1000R/FB

L2

1000R/FB

L2

1000R/FB

R45

4.7K

R45

4.7K

R42

33K

R42

33K

L10

1000R/FB

L10

1000R/FB

C51

3.3nF

C51

3.3nF

C27

3.3nF

C27

3.3nF

C13

10uF

C13

10uF

C37

100nF

C37

100nF

U1

NS4263

U1

NS4263

INNA

6

VREF

10

INNB

11

SD

1

HP-IN

16

G

ND1

2

G

ND2

7

G

ND3

15

V

DD1

4

V

DD2

13

VOPB

14

VONB

12

VOPA

3

VONA

5

NC1

8

NC2

9

J7

PH-4A_SPEAKER/NC

J7

PH-4A_SPEAKER/NC

ROUT+

1

ROUT-

2

LOUT-

3

LOUT+

4

R76

4.7K

R76

4.7K

R6

100K

R6

100K

R9

510R

R9

510R

R4
100K

R4
100K

Q6
MMBT3904

Q6
MMBT3904

1

2

3

C38

3.3nF

C38

3.3nF

R54
4.7K

R54
4.7K

C12

10uF

C12

10uF

L7

1000R/FB

L7

1000R/FB

Audio_L

Audio_R

GND

CON3

PHONOJACK

Audio_L

Audio_R

GND

CON3

PHONOJACK

1

2

3

4

5

C6

100nF

C6

100nF

C11

1u

C11

1u

C49

100nF

C49

100nF

Summary of Contents for TF-LED15S27

Page 1: ...Service Manual Part1 Exploded View Part2 Circuit Diagram Part3 Common problems solution ...

Page 2: ......

Page 3: ......

Page 4: ......

Page 5: ...L12 6 8uH 2A L12 6 8uH 2A U2 BL1117 ADJ U2 BL1117 ADJ VIN 3 ADJ 1 VOUT 2 Vout1 4 Q5 MMBT3904 Q5 MMBT3904 1 2 3 C20 100nF C20 100nF Q2 MMBT3904 Q2 MMBT3904 1 2 3 Q1 3407 Q1 3407 3 1 2 R32 47K_1 R32 47K_1 Q10 MMBT3904 Q10 MMBT3904 1 2 3 C64 10uF X5R C64 10uF X5R C40 100nF C40 100nF C65 10uF C65 10uF C44 10uF X5R C44 10uF X5R C33 100nF C33 100nF J2 J2 3 3V 1 5V 3 VCC Panel 2 R91 0R R91 0R SY8120B 2A ...

Page 6: ...要 可以使用2MByte 如果不使用MM功能 则Flash默认为512K 主IC选用TSUMV29LU时 不具有MM功能 默认 使用512KByte TSUMV29 39LU L102 FB MST6M182XX L102 NC 主要是做SCART 信号的FS输入 R73 68R R73 68R C26 100nF C26 100nF R41 1 5K R41 1 5K C105 47nF C105 47nF R12 10K R12 10K C92 1nF C92 1nF R78 4 7K NC R78 4 7K NC R67 4 7K R67 4 7K R13 3K R13 3K C91 1u C91 1u C107 100nF C107 100nF R84 100K R84 100K R36 10K R36 10K R50 0R NC R50 0R NC R121 68R R121 6...

Page 7: ...Title Size Document Number Rev Date Sheet of 04 HDMI USB 1 0 CVMV29L F 12 Custom 4 7 Wednesday April 24 2013 Title Size Document Number Rev Date Sheet of 04 HDMI USB 1 0 CVMV29L F 12 Custom 4 7 Wednesday April 24 2013 R110 33R R110 33R J10 PH 4A_USB NC J10 PH 4A_USB NC GND 1 DP 2 DM 3 5V 4 C79 100nF C79 100nF C9 10uF C9 10uF Q11 MMBT3904 Q11 MMBT3904 1 2 3 R109 33R R109 33R R127 10K R127 10K J12 H...

Page 8: ...22XX0 B000 LK ROHS R88 10K R88 10K R104 0R R104 0R R71 75R R71 75R R134 33R R134 33R R114 33R R114 33R R46 0R R46 0R R120 33R R120 33R R92 75R R92 75R R61 75R R61 75R R100 10K R100 10K R117 33R R117 33R R131 75R R131 75R J4 HEAD 2x2 双排针 DIP 2 2 2 0mm 针长 6mm 塑高 4 00mm 90度 公座 LK HEPHM20022020 B002 LK ROHS J4 HEAD 2x2 双排针 DIP 2 2 2 0mm 针长 6mm 塑高 4 00mm 90度 公座 LK HEPHM20022020 B002 LK ROHS GND 1 L 2 R...

Page 9: ... AS 16 IC2 17 GND3 18 IC3 19 SDA 20 SCL 21 MS 22 IF_OUTP 23 IF_OUTN 24 GPIO2 25 IF_AGC 26 IC4 27 VCC_IF 28 GND_IF 29 DR_CAP 30 GPIO1 31 VCC_RF 32 DIR 33 C117 100n C117 100n R56 68R R56 68R D3 BAV99_NC D3 BAV99_NC 1 2 3 R138 100R R138 100R L15 0R L15 0R C118 100n C118 100n C115 22p C115 22p C71 220n C71 220n CA4 100uF 16V CA4 100uF 16V 1 2 R66 NC R66 NC L9 220nH 120mA 5 L9 220nH 120mA 5 C84 100nF C...

Page 10: ...同相输出 进入单端模式 在D类桥式输出3W条件下插入耳机 L_ R_峰峰值为5 3V R7 R8选为910R C3 10uF C3 10uF R10 1K R10 1K R3 510R R3 510R J5 XH 4A_SPEAKER J5 XH 4A_SPEAKER ROUT 1 ROUT 2 LOUT 3 LOUT 4 C1 100nF C1 100nF R2 1K R2 1K C14 22nF NC C14 22nF NC C10 3 3nF C10 3 3nF R1 33K R1 33K CA2 470uF CA2 470uF C2 22nF NC C2 22nF NC L1 1000R FB L1 1000R FB L2 1000R FB L2 1000R FB R45 4 7K R45 4 7K R42 33K R42 33K L10 1000R FB L10 1000R FB...

Page 11: ... System Chart Power Units Problem Solving Display Units Problem Solving Audio Units Problem Solving Functional Units Problem Solving CV29L F 12 Common problems solution ...

Page 12: ...CV29L F 10 System Block SPI YPBPR HDMI R620D Moudle Earphone Spare Voltage USB 2M 4M Flash VGA RGB NS4263 LCD AV2_AUDIO TSUMV39LU RF LVDS AV2 MAIN_R L AV1 AV1_AUDIO RGB0 PC_AUDIO TSUMV59XU TSUMV29LU ...

Page 13: ... boot Figure 1 Power Units Problem Solving Y N OK Check U5 U7 U4 power supply net N Y N Y Check external power After power on Check Test point TP6 have 5V Test point TP7 have 3 3V Test Point TP1 have 2 5V 1 8V TSUMV29LU is 2 5V TSUMV59XU is 1 8V Q8 Q9 Burnout or load short circuit Check power chip LDO U2 work ...

Page 14: ...Y N Change LCD N Y Check the network output J3 cable socket Works normal Y Check U6 TSUMV29LU Power supply and clock circuit chip LVDS output pin is short circuit or open circuit Change the circuit Figure 2 Display Unit black screen N Check LCD power VCC Panel is ok J2 select is right Q1 output voltage is ok Check the software match RE Upgrade software N Y ...

Page 15: ...J8 No 5 6 pin Have or not 12V Check the Inverter power supply 4pin of J8 output voltage is over 3 3V Check power supply circuit N N Y Y Maintenance power Inverter broke or bad wire connection Figure 3 Display Unit black screen ...

Page 16: ... circuit U1 NS4263 6 11 Pin have signal input N Y Y N Check the Volume MUTE settings Reset If any signal output of J5 J7 Y N Check external Speaker Check amplifier power supply circuit Check U6 audio input pin has the signal output N Y N Y Maintenance U6 Maintenance U1 U6 Connect part network Figure 4 Audio Unit no sound ...

Page 17: ...heck power supply circuit of L15 Y N Check Tuner No 9 10 pin of U9 Have I2C data Check pull up voltage of I2C network is Ok N Y Check No 5 6 pin of U9 have IF signal N Check connect circuit Y Check external circuit of U9 is OK N Y Repair its outer circuit N Y Check video BPF circuit and U6 TSUMV29LU connect network Change Tuner Check BPF U9 direct connect network is OK ...

Page 18: ...nd only picture Check the sound of PC and AV N Y See NO SOUND repair guide Figure 6 Function Unit ATV with the image but no sound Check the connect net of BPF and U9 Check the connect net of BPF and U6 TSUMV29LU ...

Page 19: ... U6 TSUMV29LU R G B input signal works well Reset the system settings Y N VS HS signal Stable and well Check VS HS Circuit OSD settings Or input mode not correct Reset it Check VS HS Circuit Y N Check VGA circuit connection Check VGA circuit connection Check VGA input circuit Figure 7 Function Unit PC ...

Page 20: ...lor cast All no signal The system is incorrect re set settings Check VGA R G B Input network Check U6 TSUMV29LU Power supply U6 TSUMV29LU R G B Input signal is normal Y N Figure 8 Function Unit VGA VGA socket contact is ok ...

Page 21: ...und is ok in PC Check HDMI and the input network Check HDMI and input network U6 TSUMV29LU HDMI and relevant network Figure 9 Function Unit HDMI Check If the sound is ok in PC Y N See the repairs guide No Sound Solution Y Check HDMI connection N ...

Page 22: ...YPBPR YPBPR Color cast No signal Y PB PR input signal network Check U6 external circuit and Crystal circuit Figure 10 Function Unit YPBPR ...

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