Technical description and composition of the TOSHIBA 22SLDT2 TV, type of panel and applicable modules. The composition of the modules.Toshiba
Model: 22SLDT2
Panel: T220SW01 V.0 AE009667
MainBoard: CMG130A
IC MainBoard: CPU: VCT6973G-FA-B3-000; SOUND: LA42052-E
Tuner: TDTG-S486D
Specifications 22SLDT2
TOSHIBA 22SLDT2
General recommendations for repairing TV LCD
Repair of the TOSHIBA 22SLDT2 TV is better to start with a thorough external inspection and diagnosis of the malfunction. It is advisable to carefully examine the internal and external components. Often, for certain external signs, the repairman can draw some conclusions about the reasons for the failure of certain elements of the circuit even before the necessary measurements are made, which will determine the further algorithm for troubleshooting and localizing the defect. 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 when the TOSHIBA 22SLDT2 TV does not turn on, does not respond to the remote control and buttons, any indicators on the front panel do not light up or blink, and there are no sounds and no signs of operability at all, the power module is most likely faulty or, which happens much less often, there is no processor power on the motherboard. In this case, first of all, it is necessary to check the fuse at the input of the network. If it is broken, then you should check for breakdown of the PN junctions of the rectifier bridge diodes and the key transistor of the N-FET converter, which can either be on a separate radiator or integrated with a PWM controller in a common chip. Possible options.
It should be remembered that the N-FET keys used in flyback converters rarely fail for no reason that must be sought by checking other elements of the circuit. Often the breakdown is caused by malfunctions of electrolytic capacitors or semiconductor elements in the primary circuit, or by a break in the resistors in the stabilization circuits. The PWM controller chip can also cause a breakdown of the power switch of the converter.
When using the Active Power Factor Correction (CMC) circuitry in the power module, the search for faulty elements is somewhat more complicated.
In cases where the TOSHIBA 22SLDT2 TV lost the image, and the sound is there and all the other functions are functional, there is a possibility of a malfunction of the inverter (converter for powering the backlight). 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.
In most cases, the diagnosis and repair of the inverter is difficult due to the organization of protection, which turns it off in emergency cases in order to avoid fires during short circuits or breaks in high voltage circuits and during depressurization of lamps. Often, repairmen block the protection circuits in order to make the necessary measurements at the control points of the inverter to identify the causes of the defect.
When diagnosing with the protection off, special precautions must be taken, 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 the owners! Attempts to self-repair the TOSHIBA 22SLDT2 TV are not recommended by the manufacturer and can lead to serious negative consequences!
SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> Toshiba 15/19/22/SLDT2 CMG130A
The appearance of the MainBoard CMG130A is shown in the figure below:CMG130A
CMG130A can be used in TVs:
TOSHIBA 15SLDT2 (Panel CLAA150XP07FQ (V7201) AE009749 09EK115007), TOSHIBA 19SLDT2 (Panel M190A1-L0A C1), TOSHIBA 22SLDT2 (Panel T220SW01 V.0 AE009667).
Main features of the TOSHIBA 22SLDT2 device:
Installed matrix (LCD panel) T220SW01 V.0 AE009667.
The required supply voltage for all nodes of the TOSHIBA 22SLDT2 TV is provided by a switching power supply.
MainBoard - the main board (motherboard) is a CMG130A module using CPU chips: VCT6973G-FA-B3-000; SOUND: LA42052-E and others.
The TDTG-S486D tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: AUO
Model: T220SW01 V0
Type: a-Si TFT-LCD, Panel
Diagonal size: 22.0 inch
Resolution: 1680x1050, WSXGA +
Display Mode: TN, Normally White, Transmissive
Active Area: 473.76x296.1 mm
Surface: Antiglare, Hard coating (3H)
Brightness: 300 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 16.7M (6-bit + Hi-FRC), CIE1931 72%
Response Time: 3.6 / 1.4 (Tr / Td)
Frequency: 60Hz
Lamp Type: 4 pcs CCFL Without Driver
Signal Interface: LVDS (2 ch, 8-bit), 30 pins
Voltage: 5.0V
TOSHIBA 22SLDT2 LCD TV with T220SW01 LCD, 22 "(55 cm) diagonal 16:10 aspect ratio. 300 cd / m² screen brightness is provided by CCFL (EEFL) fluorescent lamps. The ratio of maximum brightness to minimum (contrast) is 1000: 1. It is possible to view images in high quality HD at a resolution of 1680x1050 pixels in the standard of graphic decomposition 720p (HD Ready). The input high-frequency or video signal can be processed in analog systems PAL, SECAM, NTSC. Graphic processing and digital signal generation takes place in standard Arti 480i, 480p, 576i, 576p, 720p, 1080i Supported media file formats: MP3, WMA, MPEG4, VideoCD, SVCD, JPEG. Stereo sound is realized by two built-in speakers. NICAM STEREO audio processing system is used.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, audio x2, S-Video, component, VGA. An output for connecting headphones is provided. To connect a computer or laptop to this TV model, a VGA (D-Sub 15) connector is used on the TV case, this interface supports resolutions: 640x480, 800x600, 1024x768, 1280x1024, 1360x768.
The power consumed by the TV in the operating mode from the network is 60 watts.
Overall dimensions: with stand 536x439x207 mm, without stand 536x403x67 mm.
TV mass: with stand: 7.3 kg, without stand: 6.1 kg.
Attention! The T220SW01 V.0 panel of the TOSHIBA 22SLDT2 LCD TV is its most expensive component.
Avoid hitting the glass and exerting pressure on the screen to avoid permanent damage to the LCD panel!