BEKO LC CHASSIS TFT- LCD TV – how to enter the service mode, service mode adjustments, main board descriptions and more - LC CHASSIS
Color
TFT LCD Module is very sensitive both electrically and physically. Users, are
requested to follow the Guidance of handling color TFT LCD Module on the
followings.
Be careful not to make scratch on the polarizer.
Surface of polarizer is soft and can be physically damaged easily.
Do not touch, push or rub polarizer surface with materials over HB hardness.
Keep clean the surface.
Wear rubber glove when touch the surface of LCD screen. Please use soft and
anti-static material as cleaner.
Keep out of water.
Water on/in the LCD may cause electrical short or corrosion. Please wipe out
dry or water carefully.
Prevent swift Temperature & Humidity change.
Instantaneous temperature and/or humidity change can make dew or ice which
cause non conformance such as malfunction.
High temperature & high humidity reduce the life-time.
LCD is not proper to be used at high temperature and high humidity. Please keep specified temperature and humidity condition.
Keep out of Corrosive Gas.
Corrosive gas affects the polarizer and the circuit chemically and cause defects accordingly.
Electrostatic discharge can make Damage
There are electro-static sensitive components such as CMOS in LCD Module. Please earth human body when handle the LCD.In addition, do not touch the interface connector pin with bear.
Do not operate for a long time under the same pattern
Operating LCD for a long time under the same pattern can cause image persistence and can damage it. Please follow following guidance.
1. Turn the power off when do not use.
2. Change the pattern periodically.
LCD is not proper to be used at high temperature and high humidity. Please keep specified temperature and humidity condition.
Keep out of Corrosive Gas.
Corrosive gas affects the polarizer and the circuit chemically and cause defects accordingly.
Electrostatic discharge can make Damage
There are electro-static sensitive components such as CMOS in LCD Module. Please earth human body when handle the LCD.In addition, do not touch the interface connector pin with bear.
Do not operate for a long time under the same pattern
Operating LCD for a long time under the same pattern can cause image persistence and can damage it. Please follow following guidance.
1. Turn the power off when do not use.
2. Change the pattern periodically.
Power
rating and panel specification
Service mode
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
Selections.
Navigation through these menus can be done by pressing OK button. Every adjustment made in this menu is saved automatically.
Options
Adjustments
Selections.
Navigation through these menus can be done by pressing OK button. Every adjustment made in this menu is saved automatically.
Options
Options are adjustments that the user can select On or Off.
SCART 2
FAV
SVHS
HOTEL MODE
STAND BY
MSP CARRIER MUTE
WSS SCART
FIRST ATS
Options are adjustments that the user can select On or Off.
SCART 2
FAV
SVHS
HOTEL MODE
STAND BY
MSP CARRIER MUTE
WSS SCART
FIRST ATS
SCART 2 / FAV / SVHS
If a source is disabled in the Service Menu, it will be skipped during source switches. If SCART2 is enabled, SW assumes that the FAV source share the same path as the SVHS source on the HW. If it is disabled, it is assumed that FAV and SVHS share separate paths. TUNER and SCART1 are enabled by default.
If a source is disabled in the Service Menu, it will be skipped during source switches. If SCART2 is enabled, SW assumes that the FAV source share the same path as the SVHS source on the HW. If it is disabled, it is assumed that FAV and SVHS share separate paths. TUNER and SCART1 are enabled by default.
Hotel mode
Enabling Hotel Mode has two effects. First, SETUP menu is no longer accessible by the user. Second, maximum adjustable volume value is limited to HOTEL VOLUME value. This value can be adjusted in the ADJUSTMENTS sub-menu of the Service Menu.
Enabling Hotel Mode has two effects. First, SETUP menu is no longer accessible by the user. Second, maximum adjustable volume value is limited to HOTEL VOLUME value. This value can be adjusted in the ADJUSTMENTS sub-menu of the Service Menu.
Standby
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’.
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’.
MSP carrier mute
If this option is ON, sound processor’s carrier mute functionality will be enabled. The MSP will mute the sound automatically if the signal quality is bad. Setting this option Off will disable this functionality.
If this option is ON, sound processor’s carrier mute functionality will be enabled. The MSP will mute the sound automatically if the signal quality is bad. Setting this option Off will disable this functionality.
ATS
If this option is set to ON, TV will display Country Selection menu in the next start. After some country is selected, the user will be prompted for the start of Auto Programming process.
If this option is set to ON, TV will display Country Selection menu in the next start. After some country is selected, the user will be prompted for the start of Auto Programming process.
Adjustments
This sub-menu contains numeric adjustments. These items are:
WHITE R
WHITE G
WHITE B
BRIGHTNESS
CONTRAST
COLOR
PRESCALE FM
PRESCALE NICAM
PRESCALE SCART
HOTEL VOLUME
This sub-menu contains numeric adjustments. These items are:
WHITE R
WHITE G
WHITE B
BRIGHTNESS
CONTRAST
COLOR
PRESCALE FM
PRESCALE NICAM
PRESCALE SCART
HOTEL VOLUME
WHITE R / WHITE G / WHITE B
These are used for color bias adjustment. Unlike other items in the service menu, changes will take effect immediately.
PRESCALE FM / PRESCALE NICAM / PRESCALE SCART
These are prescale values that will be used for the initialization of the sound processor (MSP), at the next switch on.
Hotel volume
This value is used as the volume limit, when the Hotel Mode is on.
Selections
This sub-menu contains selections.
TUNER TYPE SAMSUNG / PHILIPS
TELETEXT NO TEXT / FAST / FAST&TOP
MSP CLIP REDUCE VOL / REDUCE TONE
TUNER TYPE
One of two supported tuner can be selected from this item. System must be restarted for this change to take effect.
TELETEXT
NO TEXT: Teletext is totally disabled. TXT/MIX button will not be functional. AUTO picture format mode will be disabled in RF, F-AV and SHVS modes. Naming and sorting functionality during Auto programming will be disabled.
FAST: TOPtext functionality will be disabled.
FAST&TOP: TOPtext functionality is enabled.
TIMER MODE
If OFF TIMER is selected, the user will be able to enter time of the day info for the TV to switch off. If SLEEP TIMER is selected, the user can specify some time period, after which the TV will go to stand by automatically.
These are used for color bias adjustment. Unlike other items in the service menu, changes will take effect immediately.
PRESCALE FM / PRESCALE NICAM / PRESCALE SCART
These are prescale values that will be used for the initialization of the sound processor (MSP), at the next switch on.
Hotel volume
This value is used as the volume limit, when the Hotel Mode is on.
Selections
This sub-menu contains selections.
TUNER TYPE SAMSUNG / PHILIPS
TELETEXT NO TEXT / FAST / FAST&TOP
MSP CLIP REDUCE VOL / REDUCE TONE
TUNER TYPE
One of two supported tuner can be selected from this item. System must be restarted for this change to take effect.
TELETEXT
NO TEXT: Teletext is totally disabled. TXT/MIX button will not be functional. AUTO picture format mode will be disabled in RF, F-AV and SHVS modes. Naming and sorting functionality during Auto programming will be disabled.
FAST: TOPtext functionality will be disabled.
FAST&TOP: TOPtext functionality is enabled.
TIMER MODE
If OFF TIMER is selected, the user will be able to enter time of the day info for the TV to switch off. If SLEEP TIMER is selected, the user can specify some time period, after which the TV will go to stand by automatically.
MSP CLIP
This selection identifies which method will be used by the sound processor to prevent clipping effects on volume.
Auto programming
When the user selects the Auto program item in Setup menu, Country Selection menu is opened. The user must select a country before the Auto programming starts. Broadcast system will be selected according to the country selected.
Broadcast systems according to countries
This selection identifies which method will be used by the sound processor to prevent clipping effects on volume.
Auto programming
When the user selects the Auto program item in Setup menu, Country Selection menu is opened. The user must select a country before the Auto programming starts. Broadcast system will be selected according to the country selected.
Broadcast systems according to countries
BELGIUM
CROATIA CZECH REP. DENMARK |
BG
+ L
BG DK BG |
FINLAND
FRANCE GERMANY |
BG
L + BG BG |
GREECE
|
BG
|
HUNGARY
|
DK
|
IRELAND
|
I
|
ITALY
|
BG
|
NETHERLANDS
|
BG
|
NORWAY
|
BG
|
POLAND
|
DK
|
PORTUGAL
|
BG
|
SPAIN
|
BG
|
SWEDEN
SWITZERLAND TURKEY |
BG
BG + L BG |
UNITED
KINGDOM
|
I
|
For
countries France, Belgium and Switzerland, auto-programming is done twice. For
Belgium and Switzerland, first BG channels will be searched, after the search
in BG is done, searching will restart for L standard. If the selected country
is France, the sequence of standards is reversed, thus, first L then BG.
TELETEXT languages
L5C SW decides which teletext language group will be used for teletext decoding, according to the country selected for auto-programming.Teletext languages according to countries
EAST EUROPE:CROATIA ,CZECH_REP, POLAND
WEST EUROPE: BELGIUM ,DENMARK, FINLAND, UK, FRANCE, GERMANY, IRELAND ,ITALY ,NETHERLANDS, NORWAY, PORTUGAL,SPAIN, SWEDEN, SWITZERLAND, HUNGARY
TURKISH-GREEK:GREECE TURKEY
PC MODE
PC mode can be entered by pressing PC button on the remote controller. User can return back to TV mode by pressing the PC or TV buttons.
After the switching to PC mode, VGA input will be displayed on screen, as soon as the mode (input resolution and frequency) is determined.
If there is no input from the VGA input, NO SIGNAL dialog will be displayed for 15 seconds. At the end of this period if there is no signal from VGA input, the TV will go to Sleep State. While in the sleep state, the TV will keep monitoring the VGA input. If VGA signal is detected, the TV will wake from Sleep State, to PC mode. Alternatively, the user may select to switch the TV on from Sleep State, just like switching on from Stand-by. In this case, the set will switch on from TV mode.
TELETEXT languages
L5C SW decides which teletext language group will be used for teletext decoding, according to the country selected for auto-programming.Teletext languages according to countries
EAST EUROPE:CROATIA ,CZECH_REP, POLAND
WEST EUROPE: BELGIUM ,DENMARK, FINLAND, UK, FRANCE, GERMANY, IRELAND ,ITALY ,NETHERLANDS, NORWAY, PORTUGAL,SPAIN, SWEDEN, SWITZERLAND, HUNGARY
TURKISH-GREEK:GREECE TURKEY
PC MODE
PC mode can be entered by pressing PC button on the remote controller. User can return back to TV mode by pressing the PC or TV buttons.
After the switching to PC mode, VGA input will be displayed on screen, as soon as the mode (input resolution and frequency) is determined.
If there is no input from the VGA input, NO SIGNAL dialog will be displayed for 15 seconds. At the end of this period if there is no signal from VGA input, the TV will go to Sleep State. While in the sleep state, the TV will keep monitoring the VGA input. If VGA signal is detected, the TV will wake from Sleep State, to PC mode. Alternatively, the user may select to switch the TV on from Sleep State, just like switching on from Stand-by. In this case, the set will switch on from TV mode.
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.
GM5221
System Design Example
Figure 1 below shows a typical dual interface LCD TV system based on the gm5221. Designs based on the GM5221 have reduced system cost, simplified hardware and firmware design and increased reliability because only a minimal number of components are required in the system.
Figure 1 below shows a typical dual interface LCD TV system based on the gm5221. Designs based on the GM5221 have reduced system cost, simplified hardware and firmware design and increased reliability because only a minimal number of components are required in the system.
GM5221 Family Features
Intelligent
Image Processing
Fully programmable zoom ratios
High-quality shrink capability from UXGA resolution
Programmable coefficients for variable sharpness control
RealRecovery™ provides full color recovery image for refresh rates higher than those supported by the LCD panel
Analog RGB Input Port
Supports SDTV RGB inputs in interlaced mode
Supports EDTV (480p) up to 1080i HDTV inputs
Supports mid level clamp for YPbPr inputs
Macro vision decoding
Supports up to 162 MHz (SXGA 75Hz / UXGA 60Hz)
On-chip high-performance PLLs (single reference crystal required)
Composite-sync, Sync-on-Green (SOG) and Sync-on-Y(SoY) support
Input format detection
Phase and image positioning
Ultra-Reliable DVI-Compliant Input Port
Operating up to 165 MHz (up to UXGA 60Hz)
Direct connect to all DVI 1.0-compliant transmitters
High-bandwidth Digital Content Protection (HDCP) Note: HDCP function is available H version only.
CCIR-656 8-bit Video Input Port
Supporting NTSC / PAL interlaced and progressive
Direct connect to commercially available video decoders
Spatial de-interlacing
Advanced Color Management
Programmable gamma correction (CLUT)
TV color controls including hue and saturation controls
Full color matrix allows end-users to experience the same colors as viewed on CRTs and other displays (e.g. sRGB compliance)
Advanced Active Color Management ™ (ACM-II) provide flesh-tone compensation and image enhancement for video preset modes like sport, nature .
Adaptive Contrast and Color (ACC) ensures full dynamic range is used in video content
On-chip Versatile OSD Controller
On-chip RAM for high-quality programmable menus
1, 2 and 4-bit per pixel character cells
Horizontal and vertical stretch of OSD menus
Blinking, transparency and blending
Supports two independent OSD menu rectangles
Proportional fonts
Fully programmable zoom ratios
High-quality shrink capability from UXGA resolution
Programmable coefficients for variable sharpness control
RealRecovery™ provides full color recovery image for refresh rates higher than those supported by the LCD panel
Analog RGB Input Port
Supports SDTV RGB inputs in interlaced mode
Supports EDTV (480p) up to 1080i HDTV inputs
Supports mid level clamp for YPbPr inputs
Macro vision decoding
Supports up to 162 MHz (SXGA 75Hz / UXGA 60Hz)
On-chip high-performance PLLs (single reference crystal required)
Composite-sync, Sync-on-Green (SOG) and Sync-on-Y(SoY) support
Input format detection
Phase and image positioning
Ultra-Reliable DVI-Compliant Input Port
Operating up to 165 MHz (up to UXGA 60Hz)
Direct connect to all DVI 1.0-compliant transmitters
High-bandwidth Digital Content Protection (HDCP) Note: HDCP function is available H version only.
CCIR-656 8-bit Video Input Port
Supporting NTSC / PAL interlaced and progressive
Direct connect to commercially available video decoders
Spatial de-interlacing
Advanced Color Management
Programmable gamma correction (CLUT)
TV color controls including hue and saturation controls
Full color matrix allows end-users to experience the same colors as viewed on CRTs and other displays (e.g. sRGB compliance)
Advanced Active Color Management ™ (ACM-II) provide flesh-tone compensation and image enhancement for video preset modes like sport, nature .
Adaptive Contrast and Color (ACC) ensures full dynamic range is used in video content
On-chip Versatile OSD Controller
On-chip RAM for high-quality programmable menus
1, 2 and 4-bit per pixel character cells
Horizontal and vertical stretch of OSD menus
Blinking, transparency and blending
Supports two independent OSD menu rectangles
Proportional fonts
Embedded X86 On-chip Microcontroller
High-performance X86 MCU with on-chip RAM and ROM
External parallel ROM or serial SPI ROM interface
Unified memory architecture simplifies chip programming
23 general-purpose inputs/outputs (GPIOs) available
2-wire serial bus master to control NVRAM, video decoder
Two DDC2Bi ports with DMA buffer to internal RAM
Four PWM outputs for analog backlight control, audio, etc.
General-purpose ADC’s for keypad and temperature sensing
Integrated reset circuit
Slow clock mode for 50mW sleep mode power consumption
JTAG debug / ICE support for firmware debugging
Built-in Test Pattern Generator
Simplifies manufacturing / test
Energy Spectrum Management (ESM™)
Digital clock spectrum management
Eliminates EMI suppression components and shielding
Built-in LVDS Transmitters
Four channel 6/8-bit LVDS transmitter
Support for 8 or 6-bit panels with high-quality dithering
Single / double wide up to SXGA 75Hz output
Pin swap, odd / even swap and red / blue group swap of RGB outputs for flexibility in board layout
Highly integrated System-on-a-Chip
All system clocks synthesized from a single external crystal
50mW power saving mode
5-Volt tolerant inputs
Two Layer PCB support
On-chip reset feature to eliminate external reset component
Integrated Schmitt trigger for HSYNC and VSYNC
PACKAGE
208-pin PQFP
3.3V IO and 1.8V core power supplies.
High-performance X86 MCU with on-chip RAM and ROM
External parallel ROM or serial SPI ROM interface
Unified memory architecture simplifies chip programming
23 general-purpose inputs/outputs (GPIOs) available
2-wire serial bus master to control NVRAM, video decoder
Two DDC2Bi ports with DMA buffer to internal RAM
Four PWM outputs for analog backlight control, audio, etc.
General-purpose ADC’s for keypad and temperature sensing
Integrated reset circuit
Slow clock mode for 50mW sleep mode power consumption
JTAG debug / ICE support for firmware debugging
Built-in Test Pattern Generator
Simplifies manufacturing / test
Energy Spectrum Management (ESM™)
Digital clock spectrum management
Eliminates EMI suppression components and shielding
Built-in LVDS Transmitters
Four channel 6/8-bit LVDS transmitter
Support for 8 or 6-bit panels with high-quality dithering
Single / double wide up to SXGA 75Hz output
Pin swap, odd / even swap and red / blue group swap of RGB outputs for flexibility in board layout
Highly integrated System-on-a-Chip
All system clocks synthesized from a single external crystal
50mW power saving mode
5-Volt tolerant inputs
Two Layer PCB support
On-chip reset feature to eliminate external reset component
Integrated Schmitt trigger for HSYNC and VSYNC
PACKAGE
208-pin PQFP
3.3V IO and 1.8V core power supplies.
The VCT 49xxI is an IC
family of high-quality single chip TV processors. Modular design and
deep-submicron technology allow the economic integration of features in all
classes of single-scan TV sets. The VCT 49xxI family is based on functional
blocks contained and approved in existing products like DRX 396xA, MSP 34x5G,
VSP 94x7B, DDP 3315C, and SDA 55xx.
Each member of the family contains the entire IF, audio, video, display, and deflection processing for 4:3 and 16:9 50/60-Hz mono and stereo TV sets. The integrated microcontroller is supported by a powerful OSD generator with integrated Teletext & CC acquisition including on-chip page memory.
Each member of the family contains the entire IF, audio, video, display, and deflection processing for 4:3 and 16:9 50/60-Hz mono and stereo TV sets. The integrated microcontroller is supported by a powerful OSD generator with integrated Teletext & CC acquisition including on-chip page memory.
The VCT
49xxI family offers a rich feature set, covering the whole range of state-of-the-art
50/60-Hz TV applications.
PSSDIP88-1/-2 package
Submicron CMOS technology
Low-power standby mode
Single 20.25-MHz reference crystal
8-bit 8051 instruction set compatible CPU
Up to 256 kB on-chip program ROM
WST, PDC, VPS, and WSS acquisition
Closed Caption and V-chip acquisition
Up to 10 pages on-chip teletext memory
Multi-standard QSS IF processing with single SAW
FM Radio and RDS with standard TV tuner
TV-sound demodulation:
all A2 standards
all NICAM standards
BTSC/SAP with MNR (DBX optional)
EIA-J
Baseband sound processing for loudspeaker channel:
volume
bass and treble
loudness
balance
spatial effect (e.g. pseudo stereo)
Micronas AROUND (virtual Dolby optional)
Micronas BASS
CVBS, S-VHS, YCrCb and RGB inputs
4H adaptive comb filter (PAL/NTSC)
multi-standard color decoder (PAL/NTSC/SECAM)
Nonlinear horizontal scaling “panorama vision”
Luma and chroma transient improvement (LTI, CTI)
Non-linear color space enhancement (NCE)
Dynamic black level expander (BLE)
Scan velocity modulation output
Soft start/stop of H-drive
Vertical angle and bow correction
Average and peak beam current limiter
Nonlinear and dynamic EHT compensation
Black switch off procedure (BSO)
PSSDIP88-1/-2 package
Submicron CMOS technology
Low-power standby mode
Single 20.25-MHz reference crystal
8-bit 8051 instruction set compatible CPU
Up to 256 kB on-chip program ROM
WST, PDC, VPS, and WSS acquisition
Closed Caption and V-chip acquisition
Up to 10 pages on-chip teletext memory
Multi-standard QSS IF processing with single SAW
FM Radio and RDS with standard TV tuner
TV-sound demodulation:
all A2 standards
all NICAM standards
BTSC/SAP with MNR (DBX optional)
EIA-J
Baseband sound processing for loudspeaker channel:
volume
bass and treble
loudness
balance
spatial effect (e.g. pseudo stereo)
Micronas AROUND (virtual Dolby optional)
Micronas BASS
CVBS, S-VHS, YCrCb and RGB inputs
4H adaptive comb filter (PAL/NTSC)
multi-standard color decoder (PAL/NTSC/SECAM)
Nonlinear horizontal scaling “panorama vision”
Luma and chroma transient improvement (LTI, CTI)
Non-linear color space enhancement (NCE)
Dynamic black level expander (BLE)
Scan velocity modulation output
Soft start/stop of H-drive
Vertical angle and bow correction
Average and peak beam current limiter
Nonlinear and dynamic EHT compensation
Black switch off procedure (BSO)
Si9933ADY
Dual P-Channel PowerTrenchOO MOSFET
General Description
This P-Channel MOSFET is a rugged gate version of Fairchild Semiconductor’s advanced PowerTrench process. It has been optimized for power management applications with a wide range of gate drive voltage
(2.5V – 12V).
Applications
Load switch
Motor drive
DC/DC conversion
Power management
Dual P-Channel PowerTrenchOO MOSFET
General Description
This P-Channel MOSFET is a rugged gate version of Fairchild Semiconductor’s advanced PowerTrench process. It has been optimized for power management applications with a wide range of gate drive voltage
(2.5V – 12V).
Applications
Load switch
Motor drive
DC/DC conversion
Power management
The MP1593 is a
step-down regulator with an internal Power MOSFET. It achieves 3A continuous
output current over a wide input supply range with excellent load and line regulation.
Current mode operation provides fast transient response and eases loop stabilization.
Fault condition protection includes cycle-by-cycle current limiting and thermal shutdown.
Adjustable soft-start reduces the stress on the input source at turn-on. In shutdown mode the regulator draws 20µA of supply current.
The MP1593 requires a minimum number of readily available external components to complete a 3A step down DC to DC converter solution.
Current mode operation provides fast transient response and eases loop stabilization.
Fault condition protection includes cycle-by-cycle current limiting and thermal shutdown.
Adjustable soft-start reduces the stress on the input source at turn-on. In shutdown mode the regulator draws 20µA of supply current.
The MP1593 requires a minimum number of readily available external components to complete a 3A step down DC to DC converter solution.
Features3A Output CurrentProgrammable Soft-Start100mΩ Internal Power MOSFET SwitchStable with Low ESR Output Ceramic CapacitorsUp to 95% Efficiency20µA Shutdown ModeFixed 385KHz FrequencyThermal ShutdownCycle-by-Cycle Over Current ProtectionWide 4.75 to 28V Operating Input RangeOutput Adjustable From 1.22Under Voltage LockoutAvailable in 8 pin SOIC Package
ApplicationsDistributed Power SystemsBattery ChargerPre-Regulator for Linear Regulators.
ApplicationsDistributed Power SystemsBattery ChargerPre-Regulator for Linear Regulators.