Technical description and composition of the TV SHARP LC-22DV200RU, type of panel and applicable modules. The composition of the modules.SHARP
Model: LC-22DV200RU
Panel: V216B1-L01 revC2 4 lamps
Inverter (backlight): integrated into PSU
PWM Inverter: MP1008
MOSFET Inverter: ATP201-V
Trans Inverter: 8137002R
Power Supply (PSU): CEJ511A - DS-7106A
PWM Power: STR-Y6765
Mainboard: CMJ151B
IC MainBoard: MT5362CHG, AT24C32CN-SH-T, AT26DF081A-SU, LA42052-E; DVD: A52J01A650
Tuner: TDTW-S720D
Technical Specifications LC-22DV200
SHARP LC-22DV200RU
General recommendations for repairing TV LCD
Like any other TV, it is advisable to start repairing the SHARP LC-22DV200RU with an external examination of the visible changes in the external and internal elements. Often, by the external signs and nature of some damage, it is possible to draw preliminary conclusions and determine a further algorithm for troubleshooting. Carbonized paint on the upper layer of resistors, electrolytic capacitors of rectifier filters swollen after boiling, cracked soldering at the terminals of heating elements or transformers can often suggest the cause of the defect and possible consequences.
In cases where the SHARP LC-22DV200RU TV does not turn on, does not respond to the remote control and buttons, any indicators on the front panel do not light up and do not blink, and there are no sounds and no signs of operability when turning on, the power module is most likely faulty or, what it happens much less often - there is no processor power on the motherboard. When diagnosing and repairing the power supply, it is necessary first of all to check the fuse, and if it breaks, you should check the power switch and rectifier bridge diodes for avalanche (thermal) breakdown.
As a rule, the keys of flyback converters, which use an N-Fet field effect transistor on a separate radiator, or integrated with a PWM controller in a single chip, are quite reliable and rarely fail for no reason. The reasons for the breakdown of the key should be sought by checking other components of the circuit - electrolytic capacitors, resistors and semiconductor elements of the primary circuit. The PWM chip is verified by replacing it with a known good one.
In cases where the Power Factor Corrector (PFC) is used in the power supply, troubleshooting can be a bit more complicated.
In cases where the SHARP LC-22DV200RU TV has lost an image, and the sound is there and all other functions are operational, there is a possibility of an inverter (converter for powering the backlight) malfunction. When you turn on the TV, the image may appear briefly and immediately disappear. It must be borne in mind that with such manifestations, the lamps themselves also fail, the malfunction of which can be detected by replacement, by connecting to the connectors for diagnostics that are known to be serviceable and suitable in power.
When repairing an inverter, the A52J01A650 orion drive often needs to turn off the protection for diagnostics, which, for fire safety reasons, turns it off in any emergency situation, for example, during a malfunction or uneven wear of the lamps, which makes it difficult to find a defect.
When diagnosing with disabled protection, special precautions must be observed, because there is a risk of failure of the power elements of the inverter. After the diagnosis, it is imperative to restore the protection circuits for the inverter to operate normally.
Attention to users! Self-repair of a TV SHARP LC-22DV200RU without the appropriate qualifications and experience can lead to its complete non-repairability!
Service manual / schematic diagram ------------> Sharp LC-22DV200E
Service Manual with Schematic Diagram 81 pages of 2010 for the LC-22DV200E
The appearance of the MainBoard CMJ151B is shown in the figure below:CMJ151B
The appearance of the power supply
Main features of the SHARP LC-22DV200RU device:
Installed matrix (LCD panel) V216B1-L01 revC2 4 lamps.
To power the backlight, a converter is used, combined with the power supply, controlled by the MP1008 PWM controller. The transformer 8137002R is installed in the inverter converter. As power elements of the inverter, keys of the ATP201-V type are used.
The necessary supply voltages for all nodes of the SHARP LC-22DV200RU TV are generated by the CEJ511A power module, or its analogs using STR-Y6765 microcircuits.
MainBoard - the main board (motherboard) is a CMJ151B module using MT5362CHG, AT24C32CN-SH-T, AT26DF081A-SU, LA42052-E microcircuits; DVD: A52J01A650 and others.
The TDTW-S720D tuner provides television reception and channel tuning.
Additional technical information about the panel:
Brand: CMO
Model: V216B1-L01
Type: a-Si TFT-LCD, Panel
Diagonal size: 21.6 inch
Resolution: 1366x768, WXGA
Display Mode: TN, Normally White, Transmissive
Active Area: 477.417x268.416 mm
Brightness: 400 cd / m²
Contrast Ratio: 800: 1
Display Colors: 16.7M (6-bit + Hi-FRC), CIE1931 72%
Response Time: 1.3 / 3.7 (Tr / Td)
Frequency: 60Hz
Lamp Type: 4 pcs CCFL Without Driver
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 5.0V