TV Productor Service Manual - Action: CV9202H-A39 - 2014-02-21

Q: What are the key interfaces supported by the CV9202H-A39 LED TV?

The manual lists USB, VGA, PC AUDIO IN, COAX, EARPHONE, YPbPr, HDMI, CVBS/AUDIO, SCART, and ATV, with the TV system set to PAL+SECAM.

Q: What safety precautions are emphasized before performing maintenance?

It warns that LED internal key components must be replaced by qualified appointed manufacturers, prohibits circuit changes without authorization, highlights high-voltage hazards, and requires ESD protection when handling inner circuit boards.

Q: How is the software upgraded using a USB device?

Copy the new software to the USB, power on the TV, open MENU to the OPTION menu, select the software from the USB root, press ENTER to update, and use the update/cancel prompts. It also notes that the first power-on after initial upgrading may be slower.

Oct 12, 2026

Upload by dabgoudw

Service manual for LED TV model CV9202H-A39, covering production action and functional description including USB, VGA, PC audio input, coax, earphone, YPbPr, HDMI, CVBS/AUDIO, SCART, and ATV, with TV system PAL+SECAM. Provides working/storage specifications, LED lifespan and MTBF, power requirements, and detailed maintenance and safety guidance covering high voltage, electric shock/fire prevention, ESD handling, and LVDS VDD switch settings. Includes required instruments, software upgrade procedure via USB, and device upgrade remarks, plus main board circuitry and service documentation references.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages49

Reading Time2 h 3 min

AccessFree to download

Basic Function & Specifications

Maintenance & Safety

Safety Warning

High Voltage Warning

Electricshocks and Fires Warning

Antistatic Warning

Attention (LVDS VDD)

Instruments

Software Upgrade

Main Function & Specifications

Main board circuit diagram

Main board service manual

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. Maintenance & Safety-------------------------------------------------------------------3 3. Instruments--------------------------------------------------------------------------------4 4. Software Upgrade-------------------------------------------------------------------------4 5. Main Function & Specifications-------------------------------------------------5-26 6. Main board circuit diagram------------------------------------------------------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. Maintenance & 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 original design. *Check the rosin joints, stack welds and the insulations, ensure there is no objection attached. 2.4 Antistatic Warning: *The inner circuit boards in the LED TV are sensitive to the statics. Please take care of the 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 software by the USB port the instruction steps be

FAQs

What are the key interfaces supported by the CV9202H-A39 LED TV?

The manual lists USB, VGA, PC AUDIO IN, COAX, EARPHONE, YPbPr, HDMI, CVBS/AUDIO, SCART, and ATV, with the TV system set to PAL+SECAM.

What safety precautions are emphasized before performing maintenance?

It warns that LED internal key components must be replaced by qualified appointed manufacturers, prohibits circuit changes without authorization, highlights high-voltage hazards, and requires ESD protection when handling inner circuit boards.

How is the software upgraded using a USB device?

Copy the new software to the USB, power on the TV, open MENU to the OPTION menu, select the software from the USB root, press ENTER to update, and use the update/cancel prompts. It also notes that the first power-on after initial upgrading may be slower.

Oct 12, 2026

Upload by dabgoudw