Sunday, June 06, 2021

Philips VES15.1HE–LA CHASSIS Using VESTEL 17MB95M Main board – service mode, alignments, power (SMPS) board schematic, Wiring diagram

 VES15.1HE LA main board is driven by MStar SOC. This IC is a single chip IDTV solution that supports channel decoding, MPEG decoding, and media-centre functionality enabled by a high performance AV CODEC and CPU.

• Combo Front-End Demodulator
• A multi-standard A/V format decoder
• The MACEpro video processor
• Home theatre sound processor
• Internet and Variety of Connectivity Support
• Dual-stream decoder for 3D contents
• Multi-purpose CPU for OS and multimedia
• Peripheral and power management

Service Alignment Mode (SAM)

Specifications
• Operation minutes counter (maximum five digits displayed).
• Software version and option settings display.
• Option settings.

How to Activate SAM
To activate SAM, use one of the following methods:
• Press MENU button first. While main menu is on screen press
4725 consecutively. Do not allow the display to time out between entries while keying the sequence.
After entering SAM, the following items are displayed.

How to Store SAM Settings
All the changes which have been made are stored automatically. It is suffice to enter the new value and just exit.
How to Exit SAM
Use one the following method:
• Switch the set to STANDBY by pressing the mains button on the remote control transmitter or the television set.
Note: When the TV is switched “off” by a power interrupt while in SAM, the TV will show up in “normal operation mode” as soon as the power is supplied again. The error buffer will not be cleared.

Software Identification, Version, and Cluster
The software ID, version, and cluster will be shown in the main menu display of SAM, and CSM.
The screen will show: “AAAAAB-XX.YY”, where:
• AAAAA is the chassis name: VES11E_2.1.4n.
• B is the region indication: E = Europe, A = AP/China, U = NAFTA, L = LATAM.
• XX is the main version number: this is updated with a major change of specification (incompatible with the previous software version). Numbering will go from 01 - 99 and AA - ZZ.
- If the main version number changes, the new version number is written in the NVM.
- If the main version number changes, the default settings are loaded.
• YY is the sub version number: this is updated with a minor change (backwards compatible with the previous versions). Numbering will go from 00 - 99.
- If the sub version number changes, the new version.

Download the latest software
1. Point the web browser to http://www.philips.com/support.
2. Find information and software related to the TV.
3. Select the latest software update file and download it to the PC.
4. Insert a USB flash drive into one of the USB ports of the PC.
5. Decompress the downloaded ZIP file and copy it to the root directory of the USB flash drive.

Update the TV software
1. Unplug the mains power cord from your TV.
2. Insert the USB flash drive that contains the software update files.
3. Press and hold the OK button.
Note: If the USB flash drive is not detected after power up, disconnect it and re-insert it.
4. Plug the mains power cord back in while holding the OK button.
5. The led light will start to flash and blink.
6. The first time installation menu will appear.
7. Restart your TV. Your TV has now been updated.
Note:
• Do not remove the USB flash drive during the software update.
• If a power failure occurs during the update, do not remove the USB flash drive from the TV. The TV will continue the software update as soon as the power comes up again.
• If an error occurs during the update retry the procedure or contact the dealer.
• We do not recommend downgrading to an older version.
• Once the upgrade is finished, use the PC to remove the TV software from the USB portable memory.
• Software upgrade via an USB device can be done anytime by using hidden key combination,
‘Menu-1-5-0-5’ or via pressing the RED button at FTI screen in Hotel TV mode.
Software file name should be “VES151HE_upgrade.bin”.

How to Copy NVM Data to/from USB
Note:
This function is only valid for hotel TV.
Copy to USB
There are two steps and both are independent of each other.
Copy the updated welcome image to USB as “hotel_wel.png”
Copy from USB
There are two steps and both are independent of each other. If there is file named “hotel_wel.png” in directory “welcome_image”. It is copied to TV to use as welcome image.
Copy from USB device data to NVRAM. Just the reverse operation done by copy to USB call. Previously copied NVRAM files (Flashx.bin) are copied into TV. If there is no flash file or some of them are available on USB, the available ones are copied. If no USB is connected, nothing happens.
Note: For Clone function USB stick (Copy to USB - Copy from USB) must be formatted to FAT32. If USB is not formatted to FAT32 the other TVs will not accept cloned data and performance issues will result.

How to Edit S/N (Serial Number) & Model Number
Uploading Procedure To TV
Create “SerialNoModelNo.txt” file in an USB stick. Write the informations below on this text file.
SerialNo: xxx
ModelNo: yyy
Then apply USB operations. Power on/off.
Downloading Procedure from TV
Create “DownloadSerialModelNo.txt” file in an empty USB stick. Apply USB operations. After you applied USB operations, “SerialNoModelNo.txt” file will be created automatically in the USB stick.

LED Blinking problem
When the front LED blinks it indicates that the SSB has gone in protection mode. In the possibility of a short circuit, the LED light will blink at a 1 to 2 Hz frequency. It will continue to blink even after rebooting and until proper repairs are made. Check the DC-DC sections of the SSB as well as the power supply unit.
 
No Backlight Problem.
Backlight pin, dimming pin, backlight supply, stby on/off pin BACKLIGHT_ON/OFF pin should be “high”, when the backlight is ON. R119 must be “low” when the backlight is OFF. If it is a problem, please check Q10 and the panel cables. Also it can be tested in TP50 in main board.

No Picture via HDMI input
Check if HDCP key is valid. This can be done in CSM.
TV Will Not Start-up from Stand-by
Possible Stand-by Controller failure. Re flash the SW.
CI Module Problem
Supply, supply control pin, detect pins, mechanical positions of pins.CI supply should be 5V when CI module inserted. If it is not 5V please check CI_PWR_CTRL, this pin should be low.

Loudspeakers
Make sure that the volume is set to minimum during disconnecting the speakers in the ON-state of the TV. The audio amplifier can be damaged by disconnecting the speakers during ON-state of the set!
Display Option Code
This chassis does not use display option codes.

Staying in Stand-by Mode
This problem indicates a short on VCC voltages. Protect pin should be logic high while normal operation. When there is a short circuit protect pin will be logic low. If you detect logic low on protect pin, unplug the TV set and control voltage points with a multi-meter to find the shorted voltage to ground.
IR Problem
Check LED card supply on MB95M chassis.
No Signal Problem
Check tuner supply voltage; 5V_VCC, 3V3_TUNER and 1V8_TUNER. Check tuner options are correctly set in Service menu. Check AGC voltage at IF_AGC pin of tuner.
Remote Control Incompatibility
This TV set requires the original remote control that it was shipped with. Only the original remote control guarantees full compatibility and operation and a healthy service operation.

General Alignment Conditions
Perform all electrical adjustments under the following conditions:
• Power supply voltage: 90 - 264 VAC, 50/ 60
± 3 Hz.
• Connect the set to the mains via an isolation transformer with low internal resistance.
• Allow the set to warm up for approximately 15 minutes.
• Measure voltages and waveforms in relation to correct ground (e.g. measure audio signals in relation to AUDIO_GND).
Caution: It is not allowed to use heat sinks as ground.
• Test probe: Ri > 10 M
W, Ci < 20 pF.

Hardware Alignments
Not applicable.
Software Alignments
Not applicable.

White Point Alignments
Steps for white point alignment are listed below
• Run the PC
• Connect the USB cable of DB07 board.
• Run the video pattern generator, adjust %80 white pattern.
• Run the color Analyzer CA210, make the CAL the probe.
Calibration steps
• Select the CAL position on the probe.
• Press button 0-CAL.
• Wait 5 seconds.
• Select MEAS position on the probe.
• Wait a minimum of 15 mins, avg. time is 45 mins.
• Connect the scart cable to TV.
• Place the probe across the display (center position, 0.5 cm at 90 degrees.
• Check the PC, select the COM port.
• Select the model type OEM.dat.
• Press the START button.
• Wait for the software to set all modes (normal, cool, warm)
• Wait for the OK-READY sign.

 Default White Point Alignment Values

SSB LAYOUT

Power Supply Unit
Before checking other parts first check whether fuse on the PSU is not broken. Always replace a defective fuse with one with the correct specifications! This part is available in the regular market.
Consult the Philips Service web portal for the order codes of the boards.
The output voltages to the chassis are:
• +5V / +3V3 / 12 V- STANDBY
• +5 V / +12V (on-mode)
• +24V for audio circuit, (on-mode)

USB Interface
The SOC has two input port for USB, therefore air mouse, internal wi-fi interface and USB2 are combined with HUB. This property is optional. If air mouse and Wi-Fi interfaces are not aligned, two USB are connected directly to main IC.

Power Management
The on-board DC/DC converters receive the following voltages from the PSU (depending on set execution):
• +3.3 VSB, for standby mode.
• +5 VSB, for standby mode.
• +12 VSB, for standby mode.
• +3.3 V, for on mode.
• +5 V, for on mode.
• +24 V, for on mode, audio power.
Circuit Description
System power
The main board power is received at connector CN3 or CN2 from power board, to receive the power and signals from the PSU.

CN-2 AND CN-3 connectors’ overview

Wiring diagram 19 inch
Wiring diagram 24 inch
Wiring diagram 28 inch
Wiring diagram 32 inch

Wiring diagram 40 inch

Wiring diagram 48 inch

Power board (SMPS) circuit diagrams (Schematics)







Power circuit diagram


Audio, headphone schematic



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