REPAIRING AND NOT THROWING AWAY

REPAIRING AND NOT THROWING AWAY

Richtige Fernseher haben Röhren!

Richtige Fernseher haben Röhren!

In Brief: On this site you will find pictures and technical information about Service Modes, Circuit Diagrams, Firmware Update procedure, Disassemble procedure, Universal remote control set-up codes, Troubleshooting and more....

If you go into the profession, you will obtain or have access to a variety of tech tips databases HERE IT IS Master Electronics Repair !.

These are an excellent investment where the saying: 'time-is-money' rules. However, to learn, you need to develop a general troubleshooting approach - a logical, methodical, method of narrowing down the problem. A tech tip database might suggest: 'Replace C536' for a particular symptom. This is good advice for a specific problem on one model. However, what you really want to understand is why C536 was the cause and how to pinpoint the culprit in general even if you don't have a service manual or schematic and your tech tip database doesn't have an entry for your sick TV or VCR.

While schematics are nice, you won't always have them or be able to justify the purchase for a one-of repair. Therefore, in many cases, some reverse engineering will be necessary. The time will be well spent since even if you don't see another instance of the same model in your entire lifetime, you will have learned something in the process that can be applied to other equipment problems.
As always, when you get stuck, checking out a tech-tips database may quickly identify your problem and solution.In that case, you can greatly simplify your troubleshooting or at least confirm a diagnosis before ordering parts.

Happy repairing!
Today, the West is headed for the abyss. For the ultimate fate of our disposable society is for that society itself to be disposed of. And this will happen sooner, rather than later.

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..............The bitterness of poor quality is remembered long after the sweetness of todays funny gadgets low price has faded from memory........ . . . . . .....
Don't forget the past, the end of the world is upon us! Pretty soon it will all turn to dust!

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All posts are presented here for informative, historical and educative purposes as applicable within fair use. NOTHING HERE IS FOR SALE !

Wednesday, 13 March 2019

SHARP LC-32CT2E6 - LCD TV - SOFTWARE UPDATE PROCEDURE [17MB38]

SHARP LC-32CT2E6 - LCD TV - SOFTWARE UPDATE PROCEDURE [17MB38]

MAIN BOARD FEATURES
17MB38 Main Board consists of MSTAR concept. This IC is capable of handling Video processing, Audio processing, Scaling-Display processing, 3D comb filter, OSD and text processing, 8 bit dual LVDS transmitter.  TV supports PAL, SECAM, NTSC color standards and multiple transmission standards as B/G, D/K, I/I’, and L/L’ including German and NICAM stereo.  Sound system output is supplying max. 2x8W (10%THD) for stereo 8Ω speakers.
Supported peripherals are:
1 RF input VHF I, VHF III, UHF @ 75Ohm(Common)
1 Side AV (SVHS, CVBS, HP, R/L_Audio) (Common)
2 SCART sockets(Common)
1 YPbPr (Common)
1 PC input(Common)
3 HDMI 1.3 input(Common)
1 Stereo audio input for PC(Common)
1 Stereo Line out(Common)
1 Subwoofer out(Common)
1 S/PDIF output(Common)
1 Side S-Video(Optional)
1 Headphone(Common)
1 Common interface(Common)
1 DTV (service) USB and 1 ATV USB (MP3, JPEG)
SOFTWARE UPDATE DESCRIPTION
17MB38 Analog Part Software Update With Bootloader Procedure.
  • The File Types Used By The Bootloader.  All file types that used by the bootloader software are listed below:
  • The Binary File :It has “.bin” extension and it is the tv application. Its size is 1920 Kb.
  • The Config Binary File :It has “.cin extension and it is the config of the tv application. Its size may be 64 Kb or a few times 64 Kb.
  • The Test Script File :It has “.txt” extension and it is the test script that is parsed and executed by the bootloader. It don’t have to be any times of 64 Kb.
  • The Test Binary File :It has “.tin” extension and it is used and written by the test groups. It is run to understand the problem part of the hardware.  Alltough a file that is used by the bootloader can be had any one of these extensions, its name has to be “VESTEL_S” and it has to be located in the root directory of the usb device.
USAGE OF BOOT-LOADER
  • The starting to pass through : The chassis is only powered up.
  • The starting to download something : When chassis is powered up the menu key has to be pushed. Before the chassis is powered up and if any usb device is plugged to the usb port, the programme is downloaded from usb firstly.  Any usb device is plugged to usb port , user must open hyperterminal in the pc and connect pc to chassis via Mstar debug tool and any one of scart,dsub9 or I2c connectors.
Serial connection settings are listed below:
Bit per second: 115200
Data bits: 8
Parity: None
Stop bits: 1
Flow control: None
  • In this case the bootloader sofware puts “C” character to uart. After repeating “C” characters are seen in the HyperTerminal user can send any file to chassis by selecting Transfer -> Send File menu item and choosing “1K Xmodem” from protocol section.
SAMPLE OUTPUT BEFORE SENDING THE FILE
EEProm update
  • To Update eeprom content via uart scart,dsub9 or i2c with Mstar tool can used.
Serial connection settings are listed below:
Bit per second: 9600
Data bits: 8
Parity: None
Stop bits: 1
Flow control: None
  • Programming menu item is choosed in the service menu and switch “HDCP Key Update Mode” from off to on.
  • After that you must see Xmodem menu in the hyperterminal.To download hdcp key press OK or to download eeprom content press w.
  • If the repeated “C” characters are seen you can transfer file content via select Transfer->Send File and choose “Xmodem”protocol and click the “Send” button.
17MB38 HDCP key upload procedure.
  • Turn on TV set.
  • Open a COM connection using fallowing parameters and select ISP COM Port No
Baud Rate: 9600 bps
Data Bits: 8
Stop Bits: 1
Parity: None
Flow Control: None
  • Enter service menu by pressing “1” “4” “6” 1” consecutively while main menu is open
  • Select “9. Programming”
  • Select “HDMI HDCP Update Mode” yes.
  • On Hyper Terminal Window press “k”
  • Click on send file under Transfer Tab.
  • Select Xmodem and choose the HDCP key to be uploaded.
  • Press send button
  • Restart TV set.
17MB38 Digital Software Update From SCART
Adjusting DTV Download Mode:
  • Power on the TV.
  • Exit the Stby Mode.
  • Enter the “Tv Menu”.
  • Enter “1461” for jumping to “Service Settings”.
  • Select “8. Programming” step.
  • Change “6. DTV Download” to “On”.
  • Switch to the Stby mode.
Adjusting HyperTerminal:
  • Connect the “MB38 SCART Interface” to SCART1 (bottom SCART plug).
  • Also connect the “MB38 SCART Interface” to PC.
  • Open “HyperTerminal”.
  • Determine the “COM” settings listed and showed below.
Bit per second: 115200
Data bits: 8
Parity: None
Stop bits: 1
Flow control: None.
  • Click “OK”.
Software Updating Procedure
  • In the HyperTerminal Menu, click the “Connect” button.
  • Exit the Stby Mode.
  • The “Space” button on the keyboard must be pressed, when the following window can be seen.
  • Press the “2” button on the keyboard for choosing “2. Upgrade Application with Xmodem”.
  • Repeating “C” characters are seen in the “HyperTerminal” menu.
  • Click the “Send” button on the HyperTerminal
  • Select the “Filename xxxx_slot1.img” using “Browse”.
  • Choose the “1K Xmodem” from “Protocol” option.
Note: In the Software updating Procedure section, when the first “C” character is seen, the filename selection process must be finished before 10 seconds. If the process can not be finished, the file sending operation will be cancelled. The following figure shows this situation.
  • When sending the file the following window must be seen.
  • After the sending process the following HyperTerminal window must be seen.
  • For sending second program file, the Software Updating Procedure must be repeated from the step X. Select the “Filename xxxx_slot2.img” using “Browse”.
  • After sending the second program file, the Software Updating Procedure will be successful.
After the File Sending Process, 
  1. Upgrade Application with FUM
  2. Upgrade Application with Xmodem, options must be seen.
  • Checking Of The New Software
  • Turn off and on the TV.
  • Enter the “Setup” submenu in the “DTV Menu”.
  • Choose the “Configuration” option.
  • For controlling new software, check the “Receiver Upgrade” option.
17MB38 Digital Software Update From USB
Software upgrade is possible via USB disk by folowing the steps below.
  1. Copy the bin file, including higher version than the software loaded in flash, into the USB flash memory root directory. This file should be named force_upgrade.bin.
  2. Insert the USB disk.
  3. Digital module performs version and CRC check. If version and CRC check is successful, then a message prompt appears to notify user about new version. If the user confirms loading of new version, upgrade. bin file is written into flash unused slot.
  4. Digital module disables the previous software in the flash and then a system reset is performed.
  5. After the reset, digital module starts with new software.
Posted By: FRANK at 06:20
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