TCL MT01+DE200, Руководство по обслуживанию

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Chassis: MT01+DE200 Reversion: V0
4
．
Alignments
LCD32MT01M1 is designed for Europe, using 32 inch CM1 panel. The main chip is MTK8201.
Support
1x RF in, 0.5x SCART, 1XSCART, 1xYPbPr, 1xVGA, 1xside AV include YC input, 2xHDMI,1x headphone
out, 1xDVB-T input. The detail please refer the SyRS）
1、
Main board alignment
For Analog part
Before power on, please check and make sure the output of U1
，
U2
，
U3
，
U4
，
U5
，
U11 are not shorted to
grand.
Supply 5v to P504 and test the output of U1, the normal is 3.3V+/-5%, the U2 output should be 1.8V+/-5%
Download the SW to the main chip, please see the chapter of how to download
Check all the function of the all others board on the test tool
For PCMCIA interface
Digital module servicing and debug
hints
.
Mainly point:
1. Check PCB and each section power supply: 12V, 5V, 1.2V,1.8V ,3.3V.
2. Switch on the power, then measure the signal of output port of video and audio.
If no output, check the following point:
1) video output of CPU section.
2) 4Mhz clock of the tuner output
3) Output of chip 74AHC1GU04( position U24 of schematic). 4Mhz clock signal
to CUP(PNX8314).
4) Signal of SDRAM and flash chip when working .
5) Audio DAC ( component’s position U6 of schematic.
By contraries, enter the menu’s manual research item, and set appointed channel number,
check the signal indicator on TV screen.
3. Normal there is a signal level display on the menu.
If no displaying for the signal state indicated information, check the
following point:
1) 4Mhz clock signal of the tuner output,
2) Output of chip 74AHC1GU04(component’s position U23 of schematic).
3) Else channel decoder schematic section.
4. When it display the signal state indicated information, Press “ok’ button,
and research program. It will not play the program if not get the program list. Please check:
components of the TS output from TDA10046 to CPU.
5. Inset the CAM card( PCMCIA CARD) to CI connector, the integrated system will
detect it. if system has not found it, please check:
1) Input clock of Chip CIMAX SP2, The clock outputs from XD1 (component
XD1 of schematic) to chip CIMAX SP2.
2) Components and schematic of CI section ,
6. If not communication from ATV to digital module, Please check: I2C of
the ATV( MT01 section) and digital module.
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