CV9202H-A39 Circuit Mainboard Diagram Exploded View

TV Productor Service Manual DATE： 2014-02-21 YOUR COMPANY NAME: YOUR MODEL NAME: Production & Function Describtion: Action：CV9202H-A39 Function： USB、VGA、PC AUDIO IN、COAX、 EARPHONE、YPBPR、 HDMI、CVBS/AUDIO、SCART、ATV、 TV System：PAL+SECAM

Approved Signatures: Approved By Customer Project Leader

Reviewed By Project Leader

Issued By D.C.C.

Express Luck Industrial Limited Address:No.88,BaoTong,NanRoad,Xikeng,HengGangTown,LongGangDist ric,Shenzhen,Guangdong, China

TEL ： 0086-0755-89739888 FAX ： 0086-0755-89739666

1. Basic Function & Specifications -----------------------------------------------------3 2. Maint enance & Safety -------------------------------------------------------------------3 3. Instruments --------------------------------------------------------------------------------4 4. Soft ware Upgrade -------------------------------------------------------------------------4 5. Main Function & Specifications -------------------------------------------------5-26 6. Main board circuit di agra m ------------------------------------------------------27-38 7. Main board service manual ------------------------------------------------------39-49

1. Basic Specifications Working Temp：0～40℃ Storage Temp：-20～60℃ Humidity（Working）：10～90% Humidity（Store）：10～90% LED Lifespan（50 Lum，Tube current < Rating ）：60000 hour（Il=4.5Ma 25℃） MTBF:50000 hour (Panel Module NOT inculded) Power requirement：Voltage 100~240 V 50 / 60 Hz ( Note: The above specifications are suitable for most of the TV models, and for your reference only.)

2. Main tenanc e & Safety 2.1 Safety Warning: (1) The inside key components in the LED must be offered and replaced by qualified and appointed manufacturer. Otherwise it may generate electricshocks, fires or other important unsafety cases. (2) Don’t try to change the circuits without authorized permission. (3) Ensure to study the maintenance and service manual thoroughly before doing any of the maintaining actions. 2.2 High Voltage Warning: Please be highly noted the high voltages in the circuit. 2.3 Electricshocks and Fires Warning: *Connect the insulate transformer between the AC current to the LED before repairing the panel. *Take care of the Soldering Pad related to the high voltage circuit. When there occurs short-circuit case, please replace the overheated components in time. *All protective equipments must be re-installed according to the srcinal design. *Check the rosin joints, stack welds and the insulations, ensure there is no objection attached. 2.4 Antistatic Warning: *The innerofcircuit take care the boards in the LED TV are sensitive to the statics. Please ESD protection when replace the circuit boards. *The circuit boards must be packed by antistatic bags. *Please wear antistatic ring and gloves when during repairing works. 2.5 Attention: LVDS VDD – if the LED is in 5V, it must be switched to the setting of 5V. And if the LED is in 12V, it must be switched to the setting of 12V. (Switch setting:

CN9 -- 5V or 12V )

3. Instruments 3.1 Multimeter: Max Input Current : over 1A / Max Input Voltage : 500Vdc Measurement Range : 10Mvr~100Vdc / Accuracy : 0.03% 3.2 Oscillograph Frequency Band : over 20M /Input Impedance : over 1M Input Capacitance : below 30pF / Max Input Voltage : 250V 3.3 PC: XGA (1024X768@60Hz) 3.4 HD Singal Generator: 480P 576P 720P 1080i@50/60HZ 3.5 DVD Player: Audio/Video output, S-VIDEO output, HDMI output. 3.6 VGA cable, S-VIDEOcable, RCA cable, YpbPr cable and HDMI cable.

4. Software Upgrade The chip inside the LED is designed with a FLASH ROM memory program: it can be erased and reprogrammed, it can be also updated via the USB port. the program is related to the chip fucntion ---Different functions of chips need to be planted with different versions of prgrams. Please ugrade the new soft ware by the U SB port th e instru cti on steps below: -------Please copy the new software to the USB -------Power ON the TV and press MENU to display the main menu ,then press / to the OPTION menu. And then select the software in the root of your USB memory , Press ENTER .then press to update and to cancel. Remarks: When the first upgrading is finished, the action of turning on the tv will be a little slow. So when you turn on the TV at the first time, you need to press the "power" key on the remote control several times until you turn on the tv. Turning on the TV at the first time is very important, you need to operate it carefully to avoid the upgrading is not successful.

深圳市金锐显数码科技有限公司

FORM-70-016-01

LED TV CONTROL SPECIFICATION

MODEL :

CV9202H-A39

Approved by Cultraview AUTHOR :

GZ.Zeng

BOARD

Approved by Customer Comments :

CHECKED BY :

CHECKED BY :

APPROVED BY :

APPROVED BY:

DATE:

DATE:

Company’s seal:

Please return us one srcinal approved by you with your signatures. 客户承认签章后敬请寄回正本一份

ShenZhen Cultraview Digital Technology CO.,LTD

Content 1.

GENERAL DESCRIPTION（概述） ......................................................................... 4

2.

PICTURES（主板端口图片） .................................................................................... 6

3.

FEATURES（特性说明） ........................................................................................... 8

4.

PRESET MODE FOR USB（USB 多媒体支持格式） ............................................ 9

5.

ELECTRICAL CHARACTERISTICS（电气特性） ............................................... 11

6.

PROTECTION CAPABILITY（保护性能） ............................................................ 12

7.

INTERNATIONAL STANDARDS (国际标准) ......................................................... 13

8.

INTERFACE DEFINITION（接口定义） ................................................................ 14

9.

MECHANICAL DIMENSION（结构尺寸图） ....................................................... 18

10.

SCHEMATICS OF IR BOARD & KEY BOARD

11.

APPLICATION REQUIREMENT（应用注意事项）.............................................. 21

12.

MOUNT PRECAUTIONS（组装注意事项） .......................................................... 22

(遥控和按键原理图) ............. 20

All rights reserve, if there is discrepancy,please refer to the actual product

2


THE CHANGE LIST OF UPGRADES Version

Descri pti on

Page

V1.0

First Release

ALL

V1.1

Modify the features description

8

Redaction GZ.Zeng& SH.Zhu

Checked

GZ.Zeng


Date Oct.08,2013 Nov.05,2013

3


1. GENERAL DESCRIPTION 

CV9202H-A39’s power part is an energy-efficient ultrathin DC-line switching power supply unit, with max 65W/115VAC input, 55 watts output. It fits to 26〞to 32〞LED backlight panel. CV9202H-A39方案的电源部分为高效率开关电源，最大输入功率为65W/115VAC，总输出功率为55W，支持26到32寸LED背光屏。



CV9202H-A39 is a digital and analogue TV board, it can receive the analogue television (PAL/SECAM) and digital television (DVB-T/C) signals.

It is suitable

for the market in Europe (include UK), Australia etc. CV9202H-A39是数模一体电视主板，它可以接收模拟电视(PAL / SECAM)和数字电视(DVB-T / C)信号。适用于欧洲（包括UK），澳洲等市场。 

Supports DVB-T MPEG-4 extended ASP up to 1080p@30fps. 支持DVB-T MPEG-4 扩展ASP到1080p@30fps。



Supports H.264 MP/[email protected] for SD and HD decoding.



支持 H.264 MP/[email protected] SD 和 HD 解码。 Supports USB 2.0 multimedia play, supports audio and video play; supports txt and picture browse. 支持USB 2.0多媒体播放，支持音频和视频播放；支持文字、图片浏览。



Analogue and digital HD port input signal largest support 1080P. 模拟和数字高清端口输入信号最大支持1080p。



Support analogue & digital 1000 Pages Teletext. 支持模拟与数字 1000 页图文。



The largest support various TFT-LCD 1920x1080 resolutions module. 最大支持各种TFT-LCD 1920x1080分辨率模块。



The HDMI supports 1.4, the HDCP supports 1.1. HDMI 支持1.4，HDCP支持1.1。



Supports 3D Video Decoder NTSC-M,NTSC-J,NTSC-4.43,PAL I(B,G,H,D,N), PAL-M,PAL-N,PAL-60 and SECAM standards. 支持3 D视频解码器NTSC-M，NTSC-J，NTSC-4.43，PAL I(B，G，H，D，N)，


4

ShenZhen Cultraview Digital Technology CO.,LTD PAL-M，PAL-N，PAL-60 和 SECAM制式标准。 

Enhanced motion adaptive 3D Y/C separation comb filter for NTSC/PAL system. 增强动态自适应3D Y/C分离梳状滤波器的NTSC/PAL系统。



Supports USB update. 支持USB升级



Supports Video SDTV at 480i/576i and 480p/576p. 支持视频480i/576i 和480p/576p的标清电视。



Supports Video HDTV at 720P and 1080i and 1080P. 支持视频720P、1080i 和1080P的高清电视。



Supports PC RGB input up to UXGA@60Hz(165MHz). PC RGB输入最大支持UXGA@60Hz(165MHz)。



Reliable EMC and ESD handle 可靠的 EMC 和防静电处理


5


2. PICTURES Europe Board Type FRONT VIEW

EARPHONE

HDMI1

:

HDMI2

HDMI3

SCART

TV

SIDE VIEW

SPDIF

MINI AV

MINI

CI

YPBPR

Au st ral ia B oard Type FRONT VIEW

VGA

PC AUDIO

USB

:

EARPHONE HDMI1 HDMI2 HDMI3

CVBS

L

R

TV

AV

SIDE VIEW

SPDIF

Y

Pb

Pr

VGA

PC AUDIO

USB

YPbPr


6

ShenZhen Cultraview Digital Technology CO.,LTD EXTERNAL CONNECTORS

YP BP R-I N

Y

AV- I N

CVBS

Pb(Cb)

Audio_L

Pr(Cr)

Audio_R

GND

GND


7


3. FEATURES Type（类型） Resolution

PANEL

（最大分辨率） Interface（接口） Receiving range

（接收范围） Input Impedance

（输入阻抗） ATV

Video System

（视频制式）

Max. 1920X1080 Single/ Double LVDS 48.25MHz – 863.25MHz 75Ω PAL ,SECAM ,NTSC

Sound System

BG, DK, I

（声音制式）

NICAM/A2

Receiving range

VHF (174MHz – 230MHz)

（接收范围）

UHF (474MHz - 862MHz)

Input Impedance

（输入阻抗） Bandwidth

（带宽）

DTV

TFT-LCD/LED

75Ω 7MHz/8MHz

Modulation

DVB-T:COFDM 2K/8K QPSK, 16QAM, 64QAM

（调制） Video System

DVB-C:16QAM, 32QAM, 64QAM, 128QAM, 256QAM MPEG-2 MP@ML, MPEG-2 MP@HL, H.264

（视频制式） Sound System

MPEG-1 Layer 1/2, MPEG-2 Layer 2, DD, DD+

（声音制式） Video Level

（视频信号幅度）

RGB

Format（格式） Color system

（彩色制式）

AV

Video Level

（视频信号幅度） Video Level YpbPr

HDMI

SCART

0.7Vp-p@75ohm Max 1920X1080@60Hz PAL/NTSC/SECAM 1Vp-p@75ohm Y:1Vp-p@75ohm, PbPr:0.7Vp-p@75ohm

（视频信号幅度） Format（格式）

480i, 480p, 576i, 576p, 720p, 1080i, 1080p

Format（格式）

480i, 480p, 576i, 576p, 720p, 1080i, 1080p

Video（视频）

CVBS&RGB input, CVBS output

Video output/input

RBG: 0.7Vp-p@75ohm

（视频输出/输入）

CVBS: 1Vp-p@75ohm

Audio output/input

500mVrms


8

ShenZhen Cultraview Digital Technology CO.,LTD （音频输出/输入） PC Audio CVBS Audio AUDIO INPUT

AUDIO OUTPUT

Audio Level

0.2----2 Vrms

Component audio Max Output Power

（最大输出功率）

2 X8W @ 8ohm THD<10%

Power，Menu，Source，CH+，CH-，VOL-，VOL+

Keyboard

电源，菜单，信号源，频点+，频道-，声音+，声音-

4. PRESET MODE FOR USB

USB

USB FORMAT MODE Media

File Exit.

Codec Video

The Max Resolution And Frame Rate: 640X480@30fps Max Data Rate: 10

MJPEG .avi Xvid,MPEG-2,MPEG4,H.264,

.mp4

MOVIE

(AC3 Need

MPEG-2,MPEG-4,H, 264

license )

(Divx Need license)

license)

MPEG-2,H.264

.mpg

MPEG-1,MPEG-2

.mkv / .mov

MPEG-1/2/4,H.264,

.dat

MP3, WMA, AAC MP2, PCM

(Divx Need license)

.ts/ .trp

(DTS Need

Mbps

The Max Resolution And Frame Rate:1080p@30fps Max Data Rate: 20 Mbps

(Divx Need license)

MPEG-1

MP2 (AC3 Need license ) (DTS Need

.vob

Remark

Au di o

MPEG-2

license)

The Max Resolution:352×288 Max Data Rate: 20 Mbps The Max Resolution:720×576 Max Data Rate: 20 Mbps The Max Resolution

.rm/ .rmvb

RV8,RV9, RV10

COOK

And Frame Rate:1080p@30fps Max Data Rate:10


9

ShenZhen Cultraview Digital Technology CO.,LTD Mbps

.jpg

Progressive JPEG

Max Resolution: 1024×768

.jpeg

Baseline JPEG

Max Resolution: 15360×8640 Max Resolution:

PHOTO

.bmg

9600×6400

----

Pixel Depth: 1/4/8/16/24/32 bpp Max Resolution: 9600×6400

Non-Interlaced .png

Max Resolution:

Interlaced

1200×800

.mp3

---

MP3

Sample Rate: 32K~48KHz

.wma

---

WMA

Bit Rate: 32K~320Kbps Channel: Mono/Stereo

MUSIC .m4a / .aac

TEXT

.txt

---

AAC

ANSI/UNICODE GB/UTF8

Sample Rate: 8K~48KHz Bit Rate: 24K~384Kbps Channel: Mono/Stereo File Size:Max 1MB

Note 1)This product includes the following optional patented technologies Dolby, : DTS, DIVX, SRS , etc. If you need to use these patented, please provide the patent license to us, so that the product can meet your requirements . (此产品包括如下可选的专利技术：DOLBY、 DTS、DIVX、SRS 等，如您需要开通这些功能，请提前提供相关专利许可给到我司，以便产品能满足您的要求。) 2）Support hard disk，the maximum storage capacity is400G 3）Folder in support of the greatest depth is 30 4）USB supports the standard current 0.5A, the peak current of 1A 5）Only support single audio channel audio format and dual-audio channel audio format 6）Hi Speed FS, FAT32, FAT16, NTFS(NTFS compressed file is not supported)


10


5. ELECTRICAL CHARACTERISTICS Input Electri cal Specific ations (

5.1

)

Input

Minimum

Nominal

Maximum

Unit

Voltage

90

115/230

264

Vac

Current

——

——

2.0

A

Frequency

47

50/60

63

Hz

Efficiency

≥80%min(Full

Standby Power Consumption

≦0.5W At 240Vac input and no load condition

Inrush current

Cannot be damaged components

Leakage Current

Less Than 0.7mA, 240Vac input

Input Fuse

T3.15A/250VAC

load with input AC voltage of 115Vac @ 60Hz and 230Vac @ 50Hz)

5.2 LED Driver Power Output Connecto r& ou t put c haracteristi cs (LED ) PJ7/PJ8

NO

2PIN-2.0

Defin iti on

Voltage(Volts)

Current(mA )

Max

Nom

Min

Max

Nom

Min

75

70

420

400

380

1

V+

80

2

V-

/

/

PJ4/PJ5: 3PIN-2.0

NO

Defin iti on

Voltage(Volts) Max 80

Nom 75

Current (mA) Min

70

Max 420

Nom

1

V+

400

2

V-

/

/

3

V-

/

/


Min 380

11

ShenZhen Cultraview Digital Technology CO.,LTD PJ2: 8PIN-2.0

NO

Defin iti on

Voltage(Volts) Max

1

Nom

V+

2

V-

3

V+

4

V-

5

V+

6

V-

7

V+

8

V-

Current (mA) Min

Max

/ 80

75

70

75

105

70

75

105

70

75

95

100

95

/ 105

/ 80

100 /

/ 80

Min

/

/ 80

Nom

100

95

/ 70

105

100

95

6. PROTECTION CAPABILITY LED Short Protection: Auto restart (自动恢复)

LED

LED Open Protection: LED Shut down or auto restart （关断或自动恢复） Fuse protection The Fuse inside the power supply shall open when the AC input current is over the rated current of fuse. This Fuse protection will cause switching power supply to fail. （当 AC 输入电流超过电源内置保险丝的额定电流时，保险丝必须熔断，呈开路状态，保险丝保护启动后电源将不能启动。）


12


7. INTERNATIONAL STANDARDS (

)

EMI standard s EMI The power supply shall compliance with the following radio disturbance Criterion. Sound and television broadcast receivers and associated equipment EN55013

Sound and television broadcast receivers and associated equipment radio disturbance characteristics limits and methods of measurement

GB13837

FCC CFR 47 Part 15 subpart B

47

EMS standard s EMS  Electrostatic Discharge Immunity Test: IEC-1000-4-2 （防静电测试标准： IEC-1000-4-2 

15

8KV, Criteria B

touch discharge ±4KV,air discharge ±8KV,

Criteria B） EFT/Burst Immunity Test: IEC-1000-4-4 （快速脉冲群测试标准：IEC-1000-4-4

1KV, Criteria B 1KV, Criteria B）

Safety Compliance Design to meet : IEC60950 / 2005; IEC60065 （设计依据：IEC60950 / 2005; IEC60065） Isolation Insulation resistance（绝缘阻抗） Input To Output

DC500V 50MΩmin (at room temperature)

Input To PG

DC500V 50MΩmin (at room temperature)

Insulation voltage（绝缘耐压） Input To Output

3000Vac 50Hz 1minute ≤10mA

Input To PG

1500Vac 50Hz 1minute ≤10mA


13


8. INTERFACE DEFINITION Al l j ack s r eco gn ize the squ are pad as fir st pi n. J1 (4PIN/2.54)

SPEAKER CONNECTOR

NO.

SYMBOL

DESCRIPTION

1

ROUT+

Audio R+ Channel Output

2

ROUT-

Audio R- Channel Output

3

LOUT-

Audio L- Channel Output

4

LOUT+

Audio L+ Channel Output

J12 (8pin/2.0): DVD POWER&CONTROL

DVD

NO.

SYMBOL

1

NC

DESCRIPTION NC

2

DVD_AUTO

DVD AUTO

3

DVD_IR

IR Data Transfer to DVD

4

+12V

+12V DC Power Supply for DVD

5

GND

Ground

6

GND

Ground

7

+5V


8

+5V


J13 (11pin/2.0) DVD VIDEO&AUDIO INPUT CONNECTOR DVD

NO.

SYMBOL

DESCRIPTION

1

GND

Ground

2 3

Y GND

YPbPr-Y Input Ground

4

Pr

YPbPr-Pr Input

5

GND

Ground

6

Pb

YPbPr-Pb Input

7

LIN

Left Channel Input

8

GND

Ground

9

RIN

Right Channel Input


14

ShenZhen Cultraview Digital Technology CO.,LTD 10

GND

Ground

11

SPDIF

SPDIF Input

J14 (2X18pin/2.0mm)

LVDS INTERFACE LVDS

NO.

SYMBOL

DESCRIPTION

1

VCC

Power Supply for Panel

2

VCC


3

VCC


4

GND

Ground

5

GND

Ground

6

GND

Ground

7

RXO0-

LVDS ODD 0- Signal

8

RXO0+

LVDS ODD 0+ Signal

9

RXO1-

LVDS ODD 1- Signal

10

RXO1+

LVDS ODD 1+ Signal

11

RXO2-

LVDS ODD 2- Signal

12

RXO2+

LVDS ODD 2+ Signal

13 14

GND GND

Ground Ground

15

RXOC-

LVDS ODD Clock- Signal

16

RXOC+

LVDS ODD Clock + Signal

17

RXO3-

LVDS ODD 3- Signal

18

RXO3+

LVDS ODD 3+ Signal

19

RXE0-

LVDS EVEN 0- Signal

20

RXE0+

LVDS EVEN 0+ Signal

21

RXE1-

LVDS EVEN 1- Signal

22

RXE1+

LVDS EVEN 1+ Signal

23

RXE2-

LVDS EVEN 2- Signal

24

RXE2+

LVDS EVEN 2+ Signal

25

GND

Ground

26 27

GND RXEC-

Ground LVDS EVEN Clock- Signal

28

RXEC+

LVDS EVEN Clock + Signal

29

RXE3-

LVDS EVEN 3- Signal

30

RXE3+

LVDS EVEN 3+ Signal

31

GND

Ground

32

GND

Ground

33

ON-PBACK

PDP Control


15


ON-PANEL

35

SCL

IIC SCL

36

SDA

IIC SDA

J16 (1×3PIN/2.54mm) :

PDP Control

PANEL POWER SUPPLY

NO.

SYMBOL

DESCRIPTION

1

+5V

+5V Panel Power in

2

VCC_Panel

Panel Power in

3

+12V

+12V Panel Power in

*J17(6PIN/2.0/

):

INVERTER CONNECTOR (

)

NO.

SYMBOL

DESCRIPTION

1

GND

Ground

2

GND

Ground

3 4

ADJ ON/OFF

Brightness Adjustment for Panel(Volts DC Output) Back-Light ON/OFF Control for Panel (1：ON/0: OFF)

5

+12V

INVERTER +12V DC Power Supply

6

+12V

INVERTER +12V DC Power Supply

J21(14pin/2.0): K EY&IR&LED CONNECT OR

NO.

SYMBOL

DESCRIPTION

1

GND

2

K7

Ground

3

POWER

4

VOL+

VOL+

5

VOL-

VOL-

6

INPUT

7

CH+

CH+

8

CH-

CH-

9

MENU

MENU

10

GND

Ground

Key7(Reserved) POWER

INPUT


16


IR

12

LED_G

Green Indicator

13

LED_R

Red Indicator

14

+5V

J22(2

10PIN/2.0/NC)

IR Receiver

+5V DC Power Supply EXTERNAL HDMI CONNECTOR

NO.

SYMBOL

DESCRIPTION

1

TMDS Data2+

HDMI 2+ Signal

2

TMDS Data2-

HDMI 2- Signal

3

TMDS Data1+

HDMI 1+ Signal

4

TMDS Data1-

HDMI 1- Signal

5

TMDS Data0+

HDMI 0+ Signal

6

TMDS Data0-

HDMI 0- Signal

7

TMDS Clock+

HDMI Clock+ Signal

8

TMDS Clock-

HDMI Clock- Signal

9

HDMI_SCL

HDMI DDC IIC SCL

10

HDMI_SDA

HDMI DDC IIC SDA

11

GND

Ground

12 13

GND HDMI+5V

Ground HDMI +5V DC Power Supply

14

HPD

HDMI Hot Plug Detect

15

GND

Ground

16

GND

Ground

17

CEC

CEC Signal

18

+5V

+5V DC Power Supply

19

SCL

Main IIC SCL

20

SDA

Main IIC SDA

PCON1: AC INPUT CONNECTOR (

NO.

SYMBOL

DESCRIPTION

1

L

LIVE（火线）

2

NC

NC

3

N

NEUTRAL（零线）

HDMI

)


17


9. MECHANICAL DIMENSION Europe Bo ard Type :

The thickness of PCB board: 1.6 mm Component the tallest altitude: 16.5mm Install diameter inside the bore 3.5 mm


18

ShenZhen Cultraview Digital Technology CO.,LTD Au st ral ia Board Type

The thickness of PCB board: 1.6 mm Component the tallest altitude: 16.5mm Install diameter inside the bore 3.5 mm


19


10. (

SCHEMATICS OF IR BOA RD & KEY BOARD )


20


11.

APPLICATION REQUIREMENT ≤80%



Relative humidity 相对湿度 ≤80%



Store temperature -10~+60 存储温度-10~+60 ℃



Use temperature 0~+40 使用温度 0~+40 ℃



The procedure of the whole machine assembles and transports need to attend ESD transaction. 整机装配和运输过程中需要注意 ESD 保护。



The hole of each port does not be opened too small, especially the HDMI port hole, avoid the whole set morphing to cause the extrusion of port when

℃

℃

installing. 每个端口的开孔不应开得太小，尤其是 HDMI 端口，避免装配挤压导致端口变形。 

The hole of RGB socket is recommended the situation of not using the screw stationary on the RGB socket to fix on the structure board. VGA 端口上的螺丝柱建议是不使用螺丝固定到结构挡板上。



The connected wire which between the other boards and this board can't be leaded too long, or affect performance and image quality. 其他外接模块与电视主板的连接线长度不要太长，以免影响性能和图像质量。



The whole set inner wires matching reasonable, each connected wire try to not directly cross the PCB board, especially cross over from the main IC, avoid affect the whole set EMC performance. 整机内部线材装配要合理，各连接线尽量不直接穿过 PCB 主板，尤其是横跨主芯片，避免影响整机的 EMC 性能。



in order to obtain better EMC effect of the whole set, we suggest the LVDS twisted pair wire between the main board and panel must be tied up well and try to use shielding wire. If it’s possible, try to put on the magnetic belt ring on the wire which near the board terminal. 为了获得更好的整体 EMC 效应，我们建议主板和面板之间的 LVDS 双绞线必须绑好，尽量使用屏蔽线。如果可能的话，尽量把磁环放在靠近主板端。



The HDMI and HDCP on the main board are all passed the related certifications, but we just provide testing certification of the inner usage standard. If you need to use legal HDMI and HDCP, please apply related association as formal member by yourself. 主板上的 HDMI 和 HDCP 已通过了相关的认证，但我们只提供内部使用的标准的测试认证。如果您需要使用合法的 HDMI 和 HDCP 认证，请先成为相关协会的会员。



There is ROHS identification on the board and package, the board match ROHS standard. 主板和包装带都符合 ROHS 标准。


21


12.

MOUNT PRECAUTIONS

Note1: The H should be greater than or equal 9mm, otherwise you must add

the mylarunder PCB bottom. H的高度必须大于等于9mm,如果小于9mm,则必须在PCB底层加麦拉片绝缘. Note2: The D should be less than 8mm .Mount the power supply unit to the

screw fixing columnusing M3 screw. The maximum value of the tightening torque is 0.4N-M. D的直径须小于8mm，将电源锁在螺丝柱上需使用M3的螺丝。最大扭力为0.4N-M。 Note3: The Power supply unitis usually designed without the case. Please take

care about ESD at anytime. 因为本产品为无外壳之设计, 故在任何时候均应注意静电防护。


22

5

4

3

2

TP5

C76 100nF

+3V3_SB

+3V3_IOP

+5V_SB +5V_SB

U3 +12V

1

C66

5

IN

4

EN

100K R81 100K C74 100nF

10u/16V

D

BS

LX

+3V3_SB

Vout=0.6V(1+R1/R2) 3

1

R78 3 100K_1%

C60 22pF/NC

CA4 C77 470uF/16V 2

TP6 +3V3_SB

U10 BL1117-3.3V

6.8uH/2A

D FB N G

SY8113

+5V_SB

1

L5 6

C71 C77 100nF 10UF/X5R

2

C107

C113

10uF

100nF

VIN

VOUT Vout1

1 2 4

J D A

C120

1

C138

100nF

10uF

R79 13K_1%

+1V5

+3V3_SW

C114100nF

TP4

C62

C70

10uF

100nF

VIN

VOUT Vout1

1 5

POWER CONNECTOR

4

12VU

R82 240R_1%

1

C105 100nF

C100 C96 10uF

10uF

1

6

LX

2.2uH/2A

R83

IN

68R/1%

R95

D N FB G

EN

R103100K C148 10u/16V

L8

BS

200ma

1 2 4

J D A

+1V +1V

U6 +12V_SW

TP2 +1V5

U4 BL1117-ADJ 3

SY8120B

C101

3 10K_1%

C104 100nF

C103

C102

10UF/X5R10UF/X5R 10UF/X5R

2

C151 100nF

R96

ADC Power

+12V 12K_1%

+1V

300mA +1V_ADC

C63 FB11 100nF

C

FB10R

C171 C157100nF +12V

2

C109 R92 47k

C93

100nF

1

220nF

+12V_SW CA3

5 C129

200K

1

2 470uF/16V

10u/16V R94

+3V3_SW +3V3_SW

U12

1

4

R121100K C115 100nF

L12 LX

6

D FB N G

3

BS

6.8uH/2A R129

EN

10K

10UF/X5R

C162 100nF

C155

C230

10UF/X5RNC/100uF/16V 2

NC/10UF/X5R

R127 +2V5 20ma

+3V3_SW Q11 3904

1 R93

1

C164 C165

100K_1%

2

3 PowerON

Vout=0.6V(1+R1/R2)

1

IN

SY8120B

100nF

TP7

+12V_SW Q12 3 GV3407

22.1K_1%

D4 1N4148 2

2

1 C56 1uF

+5V_SB

+5V_SW 2

3 C45 Q6 GV3407 1

+3V3_SB

100nF +5V_SW

B

+5V_SW

R134 4.7K PowerON

R91

PowerON

1k R84 PB-ON/OFF 10K

3

R66

Q8 3904

1

BL_ON 10K

INV_ON

3 Q10 3904

1

12VU PH-6A 6 5 4 3 2 1

2

2

R64 10K

+5V_SW

+12V1 +12V ON/OFF ADJ GND1 GND J17

R87 4.7K INV_ADJ

PB-ADJUST

3 BL_ADJ

1 R68

Q9

4.7k

2 3904

A

Size DocumentNumber A2 Date: 5

4

3

2

Friday, September 13, 2013

5

4

3

2

靠近主IC

CI

5V_USB C68 NC

CON1 PCMCIA/SOKET(Single) J7

TSO_CLK TSO_VAL TSO_SYNC TSO_D0 TSO_D1 TSO_D2 TSO_D3 TSO_D4 TSO_D5 TSO_D6 TSO_D7 NC TSI_CLK TSI_VAL TSI_SYNC TSI_D0 TSI_D1 TSI_D2 TSI_D3 TSI_D4 TSI_D5 TSI_D6 TSI_D7

D

靠近CI C26

R80 R31 R36

R26 R22 R20

22R 22R 22R

22R 22R 22R

MICLK MIVAL MISTRT

MOCLK MOVAL MOSTRT

CI_REG CI_CE1 CI_CE2 CI_OE CI_WE CI_IORD CI_IOWR

C

CI_RDY

20 19 46 47 48 49 50 53 54 55 56

20 19 46 47 48 49 50 53 54 55 56

57 62 63 64 65 66 37 38 39 40 41

57 62 63 64 65 66 37 38 39 40 41

61 7 42 9 15 44 45 60 16

61 7 42 9 15 44 45 60 16

68 34 35 1

68 34 35 1

35 36

1 2

37 38

3 4

39 40

5 6

41 42

7

44

9 10

45 46

11 12

47 48

13 14

49 50

15 16

51 52

17 18

53 54

19 20

55 56

21 22

57 58

23 24

59 60

25 26

61

28

63 64

29 28 27 26 25 24 23 22 12 11 8 10 21 13 14

29 28 27 26 25 24 23 22 12 11 8 10 21 13 14

CI_A0 CI_A1 CI_A2 CI_A3 CI_A4 CI_A5 CI_A6 CI_A7 CI_A8 CI_A9 CI_A10 CI_A11 CI_A12 CI_A13 CI_A14

36 67

36 67

CIIN_CD1 CIIN_CD1

43 59 33 18 52

43 59 33 18 52

58

58

51 17

51 17

27 29

30 65

66

31 32

67

Use 8bit mode

CI_D0 CI_D1 CI_D2 CI_D3 CI_D4 CI_D5 CI_D6 CI_D7

68

33 34

9 0 6 7

+5V DM DP GND

USB0_DM USB0_DP 5V_USB

1 2 3 4

1 2 3 4

5 GND 6 GND GND GND

5 6

USB-V

J3

8 43

62

30 31 32 2 3 4 5 6

30 31 32 2 3 4 5 6

4 3 2 1

USB0_DM USB0_DP

NC 5V_USB

+5V_SW F1 0R 1

2

C33

5V_USB

+5V_SW

C31

100nF 10uF U21 5 IN 2

PowerON

R248

100R

4

TPS2051B OUT 1 GND 2

ON SET

3

CI_WAIT R249 33k CI_RST +5V_SW CI_A[0..14]

C27

CI_D[0..7]

1uF

9 0 6 7

CIIN_CD1 CI_WE CI_OE CI_IORD CI_IOWR CI_WAIT CI_RST CI_RDY CI_CE

11 11

CIIN_CD1 11 CI_WE 11 CI_OE 11 CI_IORD 11 CI_IOWR 11 CI_WAIT 11 CI_RST 11 CI_RDY 11 CI_CE 11 TSI_D[0..7] 11 TSO_D[0..7] 11,15

TSO_SYNC TSO_CLK TSO_VAL

+3V3_SW B

TSI_SYNC TSI_CLK TSI_VAL CI_WAIT

CI_CE

CI_CE1

CI_REG

R24

10K 10K

CI_RST

R25

10K 10K

CI_RDY

R29

10K 10K

CIIN_CD1

R19

10K

CI_CE2

R30

10K 10K

R27

100K

TSO_SYNC TSO_CLK TSO_VAL TSI_SYNC TSI_CLK TSI_VAL

11,1 11,1 11,1 11 11 11

MOVAL R46 1K

R23 1K

R21 100K

MOCLK

CE1 Low : Enable High : High Z

A

Title


4

3

2

CI/USB


5

4

3

2

AV Input YPBPR

J4

4 Audio_L 3 Audio_R 2 GND 1

D

CVBS1_IN AVL R32

10K

R35

10K

AV_AIN3L

AVR

R115

SPDIF_OUT

AV_AIN3R

220R

C41

PJ-320A R34

R37

R33

75R

4.7K

4.7K

PC-BIN PC-GIN PC-RIN

PC-BIN-2 PC-GIN-2 PC-RIN-2

YPBPR

PC-BIN PC-GIN PC-RIN

PC-BIN-2 PC-GIN-2 PC-RIN-2

7,9,11 7,9,11 7,9,11

7,9,11 7,9,11 7,9,11

YPBPR

J6

4 Audio_L 3 Audio_R 2 GND 1

MUX1_PB

C135

100R

33pF

YUV Input

J5 NC/AV3-8R4-5 V 2 CVBS MUX1_Y 1 GND L 4 L+ MUX1_PB 3 GND R 6 R+ MUX1_PR 5 GND

MUX1_Y

R116

MUX1_PR

R162

47R

C2

MUX1_Y

R160

47R

C1

MUX1_PB

R161

47R

C2

MUX1_PR

PJ-320A

C20

C

R40 75R

R38 75R

These components close to SPV9202

R28 75R

Y1_IN SOY1_IN PB1_IN PR1_IN

V_CLAMP +5V_SW +5V_330 FB1 R44 470k

R47 470k

R48 470k

10UH C28

J13

B

GND Y GND1 Pr GND2 Pb LIN GND3 RIN GND4 SPDIF

1 2 3 4 5 6 7 8 9 10 11

DVD_Y

DVD_Yin 470n

C37 C37

470n

C49 C49

10uF

R41 10k

R39 10k

U2 DVD_Pb

DVD_Pbin

DVD_Pr

PC-GIN-2 PC-BIN-2 PC-RIN-2

DVD_Prin

SPDIF

470n

C39 C39

DVD_Yin DVD_Pbin DVD_Prin

PH-11A R53 75R

R59 75R

R54 75R AU_SW0

R43

2 5 11 14

S1A S1B S1C S1D

DA DB DC DD

4 7 9 12

3 6 10 13

S2A S2B S2C S2D

VCC

16

GND EN

8 15

1

100R

IN

PC-GIN PC-BIN PC-RIN +5V_330

C32 100nF

0

YPBPR

1

DVD

DVD/X5DV330 R69

10K

R60

10K

DVD_AIN2R DVD_AIN2L

R62 4.7K

R67 +3V3_SW 4.7K

5V_DVD +5V_SB

Q5

GV3407

5V_DVD

DVD/PH-8A +12V_SW

2

R77

3

8 7 6 5 4 3 2 1

R76

NC/10KNC/10K R65 C46 47K 220nF

1

DVD_IR DVD_AUTO

A

R71 R72

100R 100R C42

R63 R61

4.7K

J12

200K 200K NC/100nF 100nF

3 DVD_ON/OFF

C43

+5V1 +5V GND1 GND +12V DVD_IR DVD_AUTO DVD_STB

Q7

1

Title

3904 2 Size DocumentNumber A3 Date: 5

4

3

2

AV/YPBPR/DVD/SP


5

4

3

2

PLL POWER/GND (1.0V/2.5V) ADC POWER/GND (1.0V/3.3V) D

FB for ADC need Rdc<0.015 , Z=120/100MHz Idc>3A Default part MHC3216S121W +1V_ADC

Pin45

C181

C180

C179

10uF

100nF

100nF

100nF

FB10R

Pin192

FB10 C69 100nF

Pin8

FB10R

Pin47

C174

+2V5_MPLL

FB4

+1V_TMDS

+1V

+1V_ADCA

Pin39

+2V5

TMDS POWER/GND (1.0V/3.3V)

C169 100nF

+1V_SSPLL +1V

SOURCE POWER/GND (1.0V/3.3V) +3V3_SW

+3V3_ADCB

+3V3_SW

FB14

+3V3_VDAC

+1V

C213

Pin30

Pin52 VDAC

10UH

C57

Pin53

Pin79

Pin113

Pin182 Pin202 Pin236 Pin254

Pin230

100nF

C183

10uF

C192

C187

10uF

100nF

100nF

C53 100nF

C146 100nF

C177 100nF

C90 100nF

C61 100nF

C92 100nF

C142 100nF

C65 100nF

DEMO/VIF PWR

+3V3_SW +DVDD33 FB5

Pin1

Pin98

Pin114

+3V3_SW

Pin176

+3V3_AUO

FB10R

Pin69

10UH

AUDIO POWER/GND (3.3V) +3V3_SW FB12

+3V3_DEMO FB6

FB10R C

FB10R

+CVDD

FB13

Pin33

FB10R

Pin179 FB2

C59

C91

C170

C182

100nF

100nF

100nF

100nF

C158 C147 1uF

10uF

+3V3_AUI

Pin64

Pin56

C176

C175

C178

10uF

100nF

100nF

+1V

Pin68

FB10R

SPV9202E E-Pad

LVDS PWR +3V3_SW

+1V_VIF FB9

ALL FB except ADC, CVDD : need Rdc<0.2 , Z=300/100MHz , Idc>500mA Default part : MCB2012S301H

C161 100nF

U7B

+3V3_LVDS

Pin164 C25 100nF

SYSTEM PLL

B

DDR-3 Power +1V5

EPAD34 EPAD35

290 291

EPAD37 EPAD38 EPAD39 EPAD40 EPAD41 EPAD42 EPAD43

293 294 295 296 297 298 299

+1V

FB3

+1V_AVDD

Pin177 2.2R C58 1uF

+MVDD

Pin183 Pin188 Pin196 Pin201 Pin207

Pin212 Pin217 Pin222 Pin227 Pin231 Pin237 Pin242

C108

C72

C99

C152

C143

C64

C87

C79

C97

C127

C94

C67

C163

100nF

100nF

100nF

100nF

100nF

100nF

100nF

100nF

100nF

100nF

100nF

100nF

100nF SPV9202B (1HDMI)-DDR3-LQFP256

*Short these ground planes on PCB

GND_IOP

GND_DEMO

GND_TMDS GND_ADC GND_AU GNDM

GNDP

GND_XTAL GNDV

GND_AMP

GND_TU

GND_TA

GND _TD

A

Title


4

3

2

SPV9202B POWER


5

4

3

2

1

+5V_SW +12V_AMP

R14

R13

0R

NC

+12V_AMP +3V3_SW

D1 1N4148 R17

R18

2

0

100K

1 C240

D

100uF/16V

10K

Q2 3906

1

TPA3120_SD

3P W +3V3_SB+3V3_SW D _ M T R128 10K

D

R268 NC/10K

R1 10K

2 R16

R173 NC/10K 2

D2

3

R15 1K

3

Q1 3904

1

1

MUTE_AMP

2 BAV70

R267

AUO_1R

AUO_1R

470R

NC/1K

AOUT1R

R148 C184 10nF

R12 510R AOUT1R_G

Operation Supply Current:3A Max AUO_1L

AUO_1L

R152

470R

AOUT1L +12V_AMP C188 10nF

L13

del R103

R2

220n NC/22uH/3A

AOUT1L_G

TPA3120_SD

1 2

AOUT1L +12V_AMP AOUT1L_G R3

C11 R5

C14 R8 C15

SHORT

PVCC1

FAULT

PVCC2

220n

3

LINP

BSN2

26

220n

4

LINN

OUTN2

25

GAIN0

PGND2

GAIN1

OUTN1

7

AVCC

BSN1

22

C5

220n

8

AGND

BSP2

21

C10

220n

1uF 10R

1uF 7.5k 7.5k 1uF

9

OUTP2

PLIMIT

PGND1

19

RINN

OUTP1

18

C20

220n

12

RINP

13

NC

14

PBTL TPA3110D2

9 2

C

1000 OHM/2A

C34 3.3nF

L15

C7 NC/1u/25V

OUT_LP

OUT_L+

OUT_RP

OUT_R+

4 3 2 1

4 3 2 1

J1 XH-4A

1000 OHM/2A

20

GVDD

9 2

C8 NC/1u/25V

L4

11

10k 10k

L14

NC/22uH/3A

23

10

R7

L2

24

220n

AOUT1R

3.3nF

C3

5

C24

27

AOUT1R_GC16

ZX1

1

SD

28

C1

10k

6

2

1000 OHM/2A

L1 C6

U1

510R

C

BSP1

17

PVCC3

16

PVCC4

15

NC/22uH/3A

C35

C23 NC/1u/25V

3.3nF L16

1000 OHM/2A

L3 C13

220n

NC/22uH/3A

C36 3.3nF

C18 NC/1u/25V

+12V_AMP

1 C4 C2 100n 1n

CA2

C22 100n

C19

470u/16V 2

1n

B

B

+12V_SW OUT_RP OUT_LP

GND D3

2

0R/1206 +12V_AMP 1

R11 NC/10k

R9

NC/0R

R4

NC/0R NC/0R

7 5

L R

OUT_L+ EAR_LOUT EAR_ROUT

6 1 4 3 2

R6 R10

1K 1K

EAR_L EAR_R

OUT_R+ C80

PHONOJACK-PJ339 J2 C17 22n

1

C12 22n OUT_LP

OUT_RP

2 NC/100uF/16V 10U EAR_L

C9

C21

10U EAR_R EAR_R

C231

1

2 NC/100uF/16V

A

A

Title

CV9202H-DPW Size DocumentNumber Custom Date: 5

4

3

2

Rev 12

TPA3110D2


Sheet 1

11of

12

靠近主IC DTV IF AGC

TP3 3V3_TUNER +3V3_SW

D

R125 0R

+3.3V_TUNER 3V3_TUNER FB7

DIFAGC

1

D_IFAGC

D_IFAGC

TUNER

11

FB100R C88 C112 100nF

C89

C150 C149

10u/10V 100n

C95

C123

1.2nF 1.2nF 1.2nF

C156

10uF

1uF +3.3V_TUNER

R130 4.7R/0603

2 1

3

3906 Q13

+3.3V_TUNER C136 C118

C144

1.2nF 1.2nF 1uF C

6 1 V .3 3 +

C145 1.2nF L11 560nH 5%

22

1 J18 ATV

RF in

C116 47p

2 3 45

L9

C119 91p

5nH 5%

L7

C137 180p

23 24

C133 180p

L6

0 1 2 V .3 3 +

0 2 3 V .3 3 +

1 2

8

4 V .3 3 +

1 V .8 1 +

RF_REF

4 1 2 V .8 1 +

LIFN LIFP

LIFN LIFP

11 11

DIFAGC

LDO_ADJ

15

SDA_M

RF_IP

SCL_M

11

RF_IN

DLIF_P

25

RF_SHIELD

DLIF_N

9

17

XTAL_I

SDA_M SCL_M

9

560nH 5% 180nH 5%

U9 L10 24MHz/10pF/20ppm

270nH 5% C125

X1 2

180p

1

SDA_TUNER

SCL_TUNER

R98

22R

SDA_TUNER

R100

22R

LIFN

C131 100n

LIFP

SCL

AGC1

28

SDA

AGC2

3

ADDR

XOUT

16

B T S R R97 NC/4.7K

C134 100n

12

5 26

R99 NC/4.7K

13

4

B

+3V3_SW1

ALIF_P ALIF_N

XTAL_O

3 SCL_TUNER

Si2158

18

7 2

1 IO P G 1

2 IO P G 2

1 D N G 7

2 D N G 9 1

3 D N G

R101

4.7K

DIFAGC A13 A10 AHOLE138 AHOLE138

A9 AHOLE138

A6 AHOLE138

A5 AHOLE138

A11 AHOLE138

A8 A12 AHOLE197U AHOLE138

A7 AHOLE138

C111 100n

1

1

1

1

1

1

1

1

1

9 2

SCL_M S/N

C106

SDA_M

1 M1

C110 close to tuner

22pF

22pF

M5 TPAD

M4 TPAD

M6 TPAD

M3 TPAD

M2 TPAD

1

1

1

1

1

A

Size DocumentNumber Custom Date: 54321


CV9202H--A39 CV9202H A39

— —Display — Display Unit Problem Solving — —Functional — Functional Unit Problem Solving

Picture 1: Power Units Problem Solving (Mainboard can not boot) In stand-by condition, Check pin 4，5，6 of J9, e ergo N

Y

Whether main board testing point TP5 got 5V_SB? TP6 got 3.3_SB? N

Y ，

Check external power suppply

Check the DC(U3) LDO(U10) related devices

Normal booting

After power on, check testing point TP7 got 3.3v, testing point D4 got 2.5v, testing Point TP4 got 1v? Testing Point TP2 got 1.5v?

N

Y

Whether power suppply and main board is short circuit?

Whether power chip LDO(U4) works? power chip DC (U3,U6) works? Check DIODE (D4)work？

OK

Picture 2 sp ay un t

ac s creen Black screen

Whether the voltage that power panel supply is normal? Y

N

, whether the voltage output from pin 1 of J9 is in high level?

N

ec an repa r e network that controls Inverter ON/OFF

Y

Inverter is broken or connecting line is not good

ec

e ex erna power supp y c rcu

Picture3

Mess or ac screen ac ig ton

Display unit(mess)

e er r ven oar ca e s correc connection is Ok?

N Check whether it is OK after changing LCD?

Check output network, Whether J14 driven board socket part is normal?

N

Y Whether the software ma c es Y

Change LCD

Check whether U7 power supply and clock circuit chip LVDS ou pu p n s s or c ucu or open circuit?

Repair this circuit N Upgrade the matched software again

Whether LCD power VCC-Panel is correct? Voltage in pin 1 or 2 of J14 is correct? Q3 correct?

Change driven board cable

No sound If there is anyaudio signal input or Whether amplifier power supply is normal? N

Audio part (no sound)

Y Whether the volume, MUTE setting is normal? N

Y Whether there is signal output from J1? N

Y

Whether there is signal input in U1（tpa3110）pin 3/12?

Y

peripheral audio equipment: amplifier supply circuit

Resetting

Check external

Check and repair amplifier power supply circuit, if power supply is normal, then change U1

N

Check and repair network o e connec ng part between U1 and U7

TV no searching

Picture 5 Function unit (ATV video broke down)

Check whether external RF input signal is normal?

Check whether pin2 of tuner U9 got 3.3V? Y N Check pin3,4of tuner U9, whether there is I2C data? N

Y Whether pin 12、13 of U9 got intermediate-frequency signal? N Whether the direct connecting network of U7 is normal? Y

Check and repair peripheral RF equipment

Check video sound meter U7 circuit connecting network

N

Repair the connecting

Whether t he peripheral circuit of U9 is normal? Y

Change tuner

N

Repair the peripheral circuit

Check whether I2C network pullup voltage is normal?

Check and repair power supply FB7 network

no soun , on y picture

Function unit (ATV/DTV no sound) Whether there is sound under PC/AV？ N

Y

Whether software is OK? input system is set correctly?

Refer to “NO SOUND” repair guide

Change U7

Function unit

PC

Under PC

Whether the contact of VGA socket

Miss color, Color cast

Image not in the middle

Whether U7 R.G.B input signal is normal? Y

Carry out auto-adjust operation

N

ec input circuit

No signal

Whether VS,HS signal is regular or stable? Y

The system is incorrect, reset it

Image shakes

OSD setting doesn’t match, reset it, or input mode doesn’t support

N

Check VS.HS

Whether the contact of VGA socket is good?

Check VS.HS

Picture 8 Function unit

HDMI Under HDMI

There is image but no sound

Whether HDMI contact is good?

No image

Check HDMI related network of U7

Y

Re er to "power ai ure" repair guide

Whether there is sound under PC? N

Check HDMI and input network

Y

N

input network and EDID

Refer to "no sound" repair guide

Picture 8 AC Po wer Un its Pro blem Solving

Replace the damaged parts

Y

PU1&PU2&PU3&PQ3&PQ4 whether damaged

N Y Replace transformer

12V/24V for PT1 Whether there is voltage output

Y Voltage jump

N

Check the PU1 fifth pin voltage whether is 18V

The PC23 voltage is about 1.414*Vin

Y

Y

PD6 whether is reverse breakdown

N Check PR23&PR16&PR12&

whether is open Y Y Replace the damaged parts

Y Replace PQ2 and damaged parts

Y

Y

Check PLF1&PLF2

Check the MOS FET PQ2 whether is short circuit

12V output whether s short circuit

Y

Y Check whether PD8,PD9,PD13, PD14 short circuit

N

Y

Y check the fuse PF1 whether was fused

Transformer PT1 winding whether is open

Re lace the damaged parts

Replace the

CV9202H-A39 Circuit Mainboard Diagram Exploded View

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