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CONTENTS PAGES Safety instructions Technical specifications Panel Specification Chassis block diagram Scaler block diagram Block diagram of power supply Chassis overwiev Service mode items and explanations Data sheet of important IC’s Recommended Part List Frequency list of channels...
SAFETY PRECAUTIONS GENERAL GUIDELINES Always use the manufacturer’s replacement safety components. The critical safety components marked High temperature & high humidity reduce the life-time. with on the schematics diagrams should not be LCD is not proper to be used at high temperature by other substitutes.
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L5A TECHNICAL SPECIFICATION Receiving System PAL B/G+I+D/K SECAM L/L' Comb Filter Adaptive 4H\2H Scaling Upto SXGA at 75Hz Gamma Correction 8 to 10-bit LUT Histogram Equalization Stereo Decoding German A2, Nicam (German A2, Nicam, BTSC) Stereo L, R In Stereo L, R Out Audio Output Power RMS in Max at 10% THD) 2x3W, 2x5W for 22"W...
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PANEL SPECIFICATION 14" 15" 17" 17W" 20" 22W" 23W" Samsung Hannstar Manufacturer Samsung Samsung Samsung Sanyo Double TTL\Single Single TTL\Single Interface Single LVDS Dual LVDS Single LVDS Single LVDS Single LVDS LVDS LVDS SVGA (800x600) Resolution VGA (640x480) XGA (1024x768) SXGA (1280x1024) WXGA (1280x768) WXGA (1280x720) WXGA (1280x768)
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L5-A Low-to-Mid End LCD-TV BOARD OVERVIEW L5-A Low-to-Mid End LCD TV board incorporates the LCD Controller gm2221, to create a high quality, stand-alone LCD-based TV system for consumer applications. Figure 1 illustrates the Block diagram of the board. This board supposed to have two versions: 1.
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On the board, one high quality video decoder (U100) is provided (VPC3230D of Micronas) to process video inputs coming from the video sources. The video processor can process 3 composite video inputs and 1 S-Cideo input from the NTSC/PAL video sources. The CVBS output recovered from the tuner module is made available to one of the video inputs of the video decoder.
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A keypad connector (S507) is provided which utilizes the integrated low bandwidth ADC in gm2221 for scanning 5-6 keys (menu,V+,V-,P+,P- keys standard- source key optional) on the keypad. The keypad allows access to the OSD without using the remote IR controller. The L5-A board also has In System Programming (ISP) capability for the external flash ROM using DDC2Bi.
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4. GM2221 LCD TV CONTROLLER The gm2221 IC is a highly integrated single channel scaler that can be used for both LCD monitors up to SXGA/UXGA resolutions and rear projection systems with DLP and HTPS LCD engines up to 1280x720 (720P). Some of the key features include: •...
L5A SERVICE MENU Service Menu is entered by pressing 9, 3, 0, 1 keys on the remote controller when the Picture icon is highlighted in the Main Menu. Service Menu has 3 sub-menus. These are: • Options • Adjustments •...
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STAND BY If this Option is OFF, the TV will stay in Stand By mode after a Power On. If this Option is ON, the TV will recall its last stand by status before the Power Off, and switch on from Stand By automatically, if the last state was ‘Stand by On’.
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SELECTIONS This sub-menu contains selections. • TUNER TYPE SAMSUNG / PHILIPS • TELETEXT NO TEXT / FAST / FAST&TOP • MSP CLIP REDUCE VOL / REDUCE TONE / COMPROMISE / DYNAMIC TUNER TYPE One of two supported tuner can be selected from this item. System must be restarted for this change to take effect.
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If the selected country is France, the sequence of standards is reversed, thus, first L then BG. TELETEXT LANGUAGES L5A SW decides which teletext language group will be used for teletext decoding, according to the country selected for autoprogramming.Teletext languages according to countries:...
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DEFAULT OPTIONS/ ITEM NAME VALUES OR VALUES SETUP OPTIONS ON/OFF ON/OFF ON/OFF ON/OFF SCART 2 ON/OFF ON/OFF SVHS ON/OFF HOTEL MODE ON/OFF STBY ON/OFF MSP CARRİER MUTE ON/OFF WSS SCART ON/OFF FIRST ATS ON/OFF BACKLIGHT POL ON/OFF FACTORY MODE ON/OFF ADJUSTMENTS WHITE R 0-255...
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GENESIS GM5221 LCD TV CONTROLLER The gm5221 is an LCD TV controller supporting resolutions up to SXGA (1280x1024). The gm5221 leverages Genesis patented advanced image-processing technology as well as a proven integrated ADC/PLL and an Ultra-Reliable DVI™ compliant digital receiver to provide excellent image quality. gm5221 also integrates a microcontroller, an OSD controller, advanced color management and dual LVDS transmitters.
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1.2 gm5221 Family Features • • Intelligent Image Processing™ Embedded X86 On-chip Microcontroller • • Fully programmable zoom ratios High-performance X86 MCU with on-chip RAM and ROM • • High-quality shrink capability from UXGA resolution External parallel ROM or serial SPI ROM interface •...
Block Diagram CIN1 Y OUT Adaptive MIXER 2D Scaler Output Analog Color Comb Formatter Front End Decoder VIN1 Filter CrCb OUT VIN2 Panorama NTSC, ITU-R 656 Mode YCOE PAL, ITU-R 601 VIN3 SECAL AGC, Contrast FIFO Memory NTSC 2*ADC VIN4 Brightness CNTL Saturation...
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Video Processing - VPC3230D Pin Name Type Pin Name Type Short Description Short Description B1/CB1IN GND PA SUPPLYD Blue1/Cb1 Analog Component Input Ground, Pad Decoupling Circuitry G1/Y1IN V SUPPA SUPPLYD Green1/Y1 Analog Component Input Supply Voltage, Pad Decoupling Circuitry R1/CR1IN LLC2 Red1/Cr1 Analog Component Input Double Clock Output...
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Video Processing - VPC3230D Pin Name Type Pin Name Type Short Description Short Description Picture Bus Chroma Chroma / Analog Video 5 Input VIN1 Picture Bus Chroma(LSB) Video 1 Analog Input GND SY SUPPLYD Ground, Sync Pad Circuitry VIN2 Video 2 Analog Input V SUPSY SUPPLYD Supply Voltage, Sync Pad Circuitry VIN3 Video 3 Analog Input...
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Audio Processing - MSP3410D Pin Name Type Pin Name Type Short Description Short Description V SUPPA SUPPLYD Not connected Supply Voltage I2C_CL IN/OUT LLC2 I2Cclock Double Clock Output I2C_DA IN/OUT LLC1 IN/OUT I2C data Clock Output I2S_CL IN/OUT V SUPLLCSUPPLYD I2S clock Supply Voltage, LLC Circuitry I2S_WS...
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Audio Processing - MSP3440G Short Description Pin Name Type Pin Name Type Short Description Crystal oscillator GND SY SUPPLYD XTAL_OUT OUT Ground, Sync Pad Circuitry Test pin V SUPSY SUPPLYD Supply Voltage, Sync Pad Circuitry Audio clock output(18.432MHz) INTLC AUD_CL_OUT O UT Interlace Output Active Video Output Not connected...
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SPEAKER 4R 5W LCD TV 8R9850-00A ACCESSORIE BOX 17" LCD TV BEKO 8R9953 POWER SWITCH LCD TV Y48120 L5 CHASIS 20" DAUGHTER BOARD L5A VER Y48121 L5A CHASIS 20" DAUGHTER BOARD CH CHI Y48913 ADAPTOR AC 15V 4.6A 20" CLASS II Y92913...