Saturday, August 28, 2021

Kalley KLED24HDT2 NTSC-M, PAL, DVB-T12 – how to enter the service mode, service alignments, audio amplifier and SMPS schematic, software update

 

Always respect voltages. While some may not be dangerous in themselves, they can cause unexpected reactions that are best avoided. Before reaching into a powered TV set, it is best to test the high voltage insulation. It is easy to do, and is a good service precaution.

When replacement parts are required, be sure the service technician has used replacement parts specified by the manufacturer that have the same characteristics as the original part. Unauthorized substitutions may result in fire, electric shock, or other hazards.

Alignment Procedure: MODELS - MS306-MS306B-MS306C-MS306D-MS306G-MS306P-MS306BP-MS306CP-MS306DP

How to enter the service mode

MS306 series chassis is designed for Asia Pacific-South America market. Both Full HD panel and HD panel can be compatible. The signal sources includeTV,AV,YPBPR or YCBCR,VGA,HDMI and USB. For YPBPR,HDMI source ,Format up to 1080p can be supported; USB support image, audio and video(up to H.264)playing; The whole process of alignment includes ADC calibration and White Balance adjustments.
Factory Menu
Methods of Entering
Method 1
Using the remote ,enter the “Picture” submenu in the OSD; choosing the “contrast” item and press the 9,7,3 and 5 in series,
Factory Menu will appear in the left top of screen
Method 2
Press RETURN button when FACTORY HOTKEY is enabled(ON).
General introduction

FACTORY MENU



Below the factory menu, some model information are showed, including software version, Project Name, SIACP Version, and SW release time.


The first step is to adjust HDMI.

Design Menu
Methods of Entering

Method 1 - Using the remote, enter the

“Picture” submenu in the OSD;

choosing the

“contrast” item and press the 1,9,5,and 0 in series

Design Menu will appear in the left top of screen.
Method 2: Press RETURN button when DESIGN HOTKEY is enabled (ON).
General introduction
DESIGN MENU



Service Menu
Methods of Entering
Using the remote, enter the “Picture” submenu in the OSD; choosing the “contrast” item and press the
9,7,0 and 5 in series, Service Menu will appear in the left top of screen
SERVICE MENU


Debugging
General Steps of debugging
According to the requirement of the order, below steps are needed for appropriate setting.
1) Enter the Factory Menu, enable FAC HOTKEY.
2) Check Project ID and the version of software, release date displayed at the bottom of Factory Menu.
3) Enter Design Menu, choose SERVICE MENU->Project ID, choose corresponding Project ID number of the product.

4) Return to Factory Menu, check the Product model.
5) Choose Factory Menu->NVM RESET and press the right button of the remote and wait until prompt OK appears.
6) Restart the set
7) According to the requirement of the order, Set the items of SHOP INIT and Hotel Menu etc.
8) After aging under normal temperature, calibrate ADC and adjust white balance.
9) Choose Factory Menu ->SHOP and press the button of remote to initialize the set.
Note: After step 9, Hotel Menu will be disabled by default. Therefore, if the order requires hotel function, it is necessary to enable hotel function by set Design MENU->Service Menu->HOTEL ENABLE to ON.
Equipments
·Color Analyzer CA-210.
·Video Pattern Generator Chroma2329.
·Color TV Pattern Generator PM5418/Fluke5418.
·VGA cable , AV(RCA) cable ,YPBPB (RCA) cable, HDMI cable etc.

ADC Calibration
 Signal and generator
PC: Chroma2329 Pattern 42,Timing 14(1024X768@60Hz 5 MOSAIC) YPBPR: Chroma2329 pattern 103, Timing 79(100% Color Bar,720p)

Steps of Calibration
1). Access to the Factory menu->ADC

2). select RGB source and see the 5 MOSAIC appear on the screen
3). Select AUTO ADC , Press the right button on the your remote to calibrate the ADC automatically.
4). Select YPBPR source and Repeat step 5.3 .
When the OK appears the calibration has been finished successfully.



White Balance adjustments (Manual)
Before adjustment ,you must make sure the ADC status(only PC and YPbPr) is “success “and Color Analyzer has been calibrated .Only AV1,YPbPr,PC,HDMI1 need to be adjusted. HDMI1 should be the first.

Signal and generator
The pattern of the signal should be used are White (Chroma2329 pattern 113) and Grey (pattern 114).
The format of signal are respectively 720P for HDMI1 (Chroma2329
Timing 69),PAL (Chroma2329 Timing38) for AV1,1024X768@60Hz(Chroma2329
Timing14) for VGA and 720P(Chroma2329 Timing79) for YPbPr.
Steps of adjustment
1).Enter the factory menu-> White Balance, select source HDMI 1 and Normal Temperature.
2).Input grey signal in 720p format.
3).Change R-OFFSET and B-OFFSET to make sure the value of color coordination equal to (X=0.280 +or-0.015;Y=0.290 +or-0.015).
4).Input white signal in 720p format.
5). Change R-GAIN and B-GAIN to make sure the value of color coordination equal to (X=0.280 +or-0.015;Y=0.290 +or-0.015).

6).Repeat step 2—5 until both of the value of color coordination of white and grey equal to (X=0.280 +or-0.015;Y=0.290 +or-0.015).
For COOL and WARM color temperature, just repeat step 2—5.The color coordination we recommend for COOL and WARM color temperature is respectively(X=0.270 +or-0.015;Y=0.270 +or-0.015) and (X=0.300 +or-0.015;Y=0.305 +or-0.015).
After the adjustment of HDMI1, you can switch to other source AV, PC and YPbPr and repeat step 1—6 to do the WB adjustment.
Note: For some small size LED panel,the color coordination of specifications is not X=0.280, Y=0.290,and we recommend you adopt the values from panel specifications.
ADC Calibration and White Balance Adjustment (automatic)
The process of adjusting ADC and White Balance automatically is out of the range of this file, Please refer to the relevant technical file of HuiZhou factory of TCL.
6.Chip list of software programming before SMT


Software update
Method of SW update:
1
.Download the bin file to the root directory of your USB device (Do not change the file name); Then insert the USB device to USB interface of TV set.
MS306 Series with its upgrade file corresponding relation as the table below show:


Upgrading method 1
1.using the remote, enter the “Picture” submenu of the OSD; choosing the “contrast” item and press 9,7,3 and 5 in series,
Factory Menu will appear in the left top of screen.
2, Select the “USB UPDATE” item , press left or right key to enter the update box;


3, Select “YES” of the dialog box and press OK button to start the update, you will see a progress box on the screen.
4, After updating , the set will reset automatically.
Upgrading method 2
1
.Press the “MEUN”button of Remote Control, then select the software update (U..> item in Option sub-menu, press the left of right key to enter the update box.

2.Press left button Select “YES” of the dialog box and to start the update, you will see a progress box on the screen.

3. After updating , the set will reset automatically.


Project ID selecting
1) Press the Menu button of remote control, then select Contrast item of Picture submenu;
press 1,9,5,0 consecutively, there you go the Design Menu.
2) Select the SERVICE MENU item, press OK and RIGHT button of the remote to enter submenu,
3) Select the PROJECT ID item, press OK or RIGHT button of the remote to enter the submenu;
4) Press the right or left button of the remote to select the ID you want;
5) After ID selection, press MENU button of the remote to exit DESIGN MENU.
6) Finally, do AC power on/off.

Audio amplifier schematic

Power supply [SMPS] and LED driver schematic




Friday, August 20, 2021

How to enter service mode of Pioneer AV receiver VSX1130, VSX930, VSX90 – service adjustments, network confirmation, software update, system reset, error information and more

 

Pioneer AV Receiver VSX-1130-K, VSX-930-K, VSX-930-S, VSX-90 – using  STR2A153 as SMPS control

Paste a square of acetate tape 10 × 10 mm in size onto the upper left corner of the AXX7293 shield.
Be careful NOT to conceal the MAC address printed on the shield with the acetate tape.
Be sure to paste on the acetate tape after module replacement. (Only for the European models)



Cable dressing


Contrast of PCB assemblies


PCB locations


Confirmation of the network module

Procedures:
Check if the set SSID of this unit is displayed on a device such as a PC or a smart phone, following the procedures shown below.
If the SSID is displayed on the device, the antenna connections of the Network module are normal.
If the SSID is not displayed, check the antenna cable connections on the network module.

1 Press "Home Menu" button on a remote control and select "Network Connection" from the Network, Bluetooth menu on screen.

2 Select "Wireless Direct" from the Network Connection menu.

3 Select the encryption method to "None" from Security Protocol.

4 Select "Frequency Band" at DN and select the frequency to "2.4GHz".
5 Select "OK" then press ENTER. "Setting change?" window is displayed, then select "YES" and press ENTER.

6 Select the SSID shown on the screen of this receiver.
(e.g. WirelessDirectX: XXXXXX)


How to Check on a PC Equipped with a Wireless LAN Device

Windows 7

1 Left-click on the wireless network icon on the system tray.

2 Check that the above-mentioned SSID
(WirelessDirectX:XXXXXX) is displayed on the list that appears.

How to Check on a Smartphone (Example: iPod Touch)

1 At the top screen of an iPod Touch, select Settings.

2 Select Wi-Fi.

3 Check that the above-mentioned SSID
(WirelessDirectX:XXXXXX) is displayed in the "Choose a Network" box.


Error Indications When an Abnormality in The Amplifier System is detected and How to Enter Release Mode

During Standby mode, simultaneously press and hold the "TUNE ↓" and "MULTI-ZONE ON/OFF" keys for 5 seconds.


Service mode: How to enter?

During Standby mode, simultaneously press and hold “MULTI-ZONE ON/OFF” and “ENTER” keys for 5 seconds to enter this mode. Turn off the power to this unit by setting the main volume level to “---dB” and Multi-zone to “OFF”.

How to exit

Turning off the power or pressing the RETURN key returns to the normal mode.



How to reset the system

Resetting the system to the factory default settings
Use this procedure to reset all the receiver’s settings to the factory default. Use the front panel controls to do this.
Set MULTI-ZONE to MULTI ZONE OFF.
• Disconnect the iPod and USB memory device from the receiver beforehand.
• Set the Control with HDMI to OFF.
1 Switch the receiver into standby.
2 While holding down ENTER on the front panel, press  STANDBY/ON.
The display shows RESET <NO>..
3 Select ‘RESET’ using PRESET
ç / è then press ENTER on the front panel.
The display shows RESET? OK.
4 Press ENTER to confirm.
OK appears in the display to indicate that the receiver has been reset to the factory default settings.
• Note that all settings will be saved, even if the receiver is unplugged.


Dressing the antenna cables


Setting and adjustment

If the adjustment is shifted or if it becomes necessary to readjust because of part replacement, etc., perform the adjustment as described below.
• Any value changed in Adjustment mode will be stored in memory as soon as it is changed. Before readjustment, take note of the original values for reference in case you need to restore the original settings.
• Use a stable AC power supply.

Adjustment required when the unit is repaired or replaced


USB backup and Updating the Firmware

USB backup

This model is capable of saving the set values stored in the MAIN Ucom of DMAIN Assy in the USB and loading them in a new DMAIN Assy. (Note that MAIN Ucom should normally operate to enable this function.)
When replacing DMAIN Assy, execute the above mentioned processes


Requirements for USB memory
USB memory to be used should meet the following requirements.
• Compatible with USB Mass storage Class
• With a file system of FAT (FAT32)
File saving format
Files are to be saved in the following format:
Example: VSX-1130_BK01.avr
How to save in the USB memory from AV amplifier
1. Insert the usable USB memory into the USB terminal when the main device is off.
2. Enter the SERVICE MODE and select [USB BAK c HOLD d] with g keys.  [See  TEST MODE] for how to enter the SERVICE MODE.)
3. Select [USB BAK c SAVE? d ] with h keys and press [ENTER].
Note: The system cannot execute SAVE, LOAD until start is completed of Network module.
4. Saving in the USB starts and the main device automatically goes off after the normal completion ([COMPLETE] is displayed.).
5. Remove the USB and saving is finished.
*1. If the following errors occur after "SAVE" is executed, error message will be displayed and "SAVE" will be stopped and the power will be turned off.
• Ejecting of USB device
• Short capacity of USB device
• Error during writing in the USB device (Read Only or defective Sector, etc.)
*2. If the same file name exists in the USB, overwriting will be automatically executed.
How to write into AV amplifier from the USB memory
1. Insert the USB with the saved file into the USB terminal when the main device is off.
2. Enter the TEST MODE and select [USB BAK c HOLD d] with g keys.
[See TEST MODE] for how to enter the TEST MODE.)
3. Select [USB BAK c LOAD? d ] with h keys and press [ENTER].
4. Saving in the main device starts and it automatically goes off after the normal completion ([COMPLETE] is displayed.).
5. Remove the USB and loading is finished.
* If the following errors occur after "LOAD" is executed, error message will be displayed and "LOAD" will be stopped and the power will be turned off.
• No setting file
• Mismatching between the setting file and the specification of the A/V RECEIVER type to be loaded back
• Error due to Checksum, Signature Check, and Size Check
• Ejecting of USB device (during reading of the setting file)
Precautions
• Files are stored in Root of USB memory.
• Files are read from Root of USB memory.
To make operations such as moving files, be sure to assign the saved file in Root of the USB memory.
Also please be careful not to assign *.avr in multiple numbers.
• The time and date of updating for saved file is fixed to "2006/03/08 20:01."
• In principle, please implement Load without making of factory default settings.
• Depending on the type of USB memory device, the setting file may not have properly been saved even though [COMPLETE] is displayed after a SAVE process.
Before replacing the DMAIN Assy, perform a LOAD process and check that [COMPLETE] is displayed.

UPDATING OF THE FIRMWARE

Workflow


MAIN com, SUB com (EVENT), DSP Flash ROM and Network module Update by USB Memory and the Confirmation of the Version

UPDATE PANEL Mode (Version update)

Copy the UPDATE FILE to the root directory of the USB Memory.
Note: NEVER copy several UPDATE FILES to the root directory of the USB Memory.
Copy only the corresponding UPDATE FILE.
Enter the UPDATE PANEL mode.
Check a current version.
2. Turn off the power to this unit by setting Multi-Zone to "OFF".
3. Connect the USB Memory to the USB terminal (A type) of the front panel.
1. While holding down
"TUNE" key on the front panel, press "STANDBY ON/OFF" key and moves to the UPDATE PANEL mode.
2. The updating process is as follows.


Update time is fluctuated by contents of the update. It will take about 26 minutes at the maximum.
(Actual time is from 3 minutes to 26 minutes.)
Time required for updating varies, because only the programs that require updating will be updated.

Confirmation
Enter UPDATE PANEL mode and check that the programs have been updated.

Idle current adjustment

When any component parts which are within the red square on the following circuit diagram are replaced, the idle current adjustment of that channel is required. (Idle current adjustment for another channel is not required.)
However, when any capacitors are replaced, the adjustment is not required.
(The following circuit diagram is for SL channel, but another channel also has same circuit diagram and same adjustment is required)



Wednesday, August 11, 2021

Philips 32, 43 and 49 inch LED TVs - 32PHD5102, 43PFD5102, 49PFD5102 – Service mode, factory mode, software upgrade, error codes, SMPs (Power) and audio amplifier schematic

 

Philips 32PHD5102, 32PHG5102, 43PFG5102, 43PFD5102, 49PFG5102, 49PFD5102 - MTK5800 platform - TPM17.7L LA chassis

The TPM17.7L LA is a new chassis launched in LATAM in 2017. The whole range is covered by MT5800LUEJ HSFBGA-597 platform. The major deltas versus its predecessor support NTSC;PAL-M; PAL-N AND ISDB-T with also multi-media, CEC,ARC, SPDIF functionality.
The TPM17.7L LA chassis comes with the following styling:
series xxPHG5102/xx
series xxPHD5102/xx
series xxPFG5102/xx
series xxPFD5102/xx
Implementation
Key components of this chassis are:
SCALER MT5800LUEJ HSFBGA-597
DEMODULATOR SI2180-B60-GMR QFN-48
EMMC THGBMDG5D1LBAIT 4GB FBGA153
AUDIO Amplifier. AD87588-LG48NAY 20W E-LQFP-48
TUNER LATAM ST53WS-13-E

Service Modes

Service Alignment Mode (SAM)
Purpose
To modify the NVM.
To display/clear the error code buffer.
To perform alignments.
Specifications
Operation hours counter (maximum five digits displayed).
Software version, error codes, and option settings display.
Error buffer clearing.
Option settings.
Software alignments (White Tone).
NVM Editor.
Set screen mode to full screen (all content is visible).
How to Activate SAM
To activate SAM, use one of the following methods:
Press the following key sequence on the remote control transmitter: “062596”, directly followed by the “INFO/OK” button. Do not allow the display to time out between entries while keying the sequence.
Or via ComPair.
After entering SAM, the following items are displayed, with “SAM” in the upper right corner of the screen to indicate that the television is in Service Alignment Mode.
How to Navigate
In the SAM menu, select menu items with the UP/DOWN keys on the remote control transmitter. The selected item will be indicated. When not all menu items fit on the screen, use the UP/DOWN keys to display the next/previous menu items.

With the “LEFT/RIGHT” keys, it is possible to:
– (De) activate the selected menu item.
– (De) activate the selected sub menu.
– Change the value of the selected menu item.
When you press the MENU button once while in top level SAM, the set will switch to the normal user menu (with the SAM mode still active in the background).
How to Store SAM Settings
To store the settings changed in SAM mode (except the RGB Align settings), leave the top level SAM menu by using the POWER button on the remote control transmitter or the television set. The mentioned exceptions must be stored separately via the STORE button.
How to Exit SAM
Use one of the following methods:
Switch the set to STANDBY by pressing the mains button on the remote control transmitter or the television set. Via a standard RC-transmitter, key in “00” sequence.
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.

Factory mode:
Purpose
To perform extended alignments.
Specifications
Displaying and or changing Panel ID information.
Displaying and or changing Tuner ID information.
Error buffer clearing.
Various software alignment settings.
Test pattern displaying.
Public Broadcasting Service password Reset.

Customer Service Mode (CSM)
Purpose
The Customer Service Mode shows error codes and information on the TVs operation settings. The call centre can instruct the customer (by telephone) to enter CSM in order to identify the status of the set. This helps the call centre to diagnose problems and failures in the TV set before making a service call.
The CSM is a read-only mode; therefore, modifications are not possible in this mode.
Specifications
 Ignore “Service unfriendly modes”.

Line number for every line (to make CSM language independent)

How to Activate the Factory mode
To activate the Factory mode, use the following method:
Press the following key sequence on the remote control transmitter: from the
menu/homepress 1999, directly followed by the Back/Returnbutton. Do not allow the display to time out between entries while keying the sequence.
After entering the Factory mode, we can see many items displayed, use the UP/DOWN keys to display the next/previous menu items

How to Exit the Factory mode
Use one of the following methods:
l Select EXIT_FACTORY from the menu and press the “OK” button.
Note: When the TV is switched “off” by a power interrupt, or normal switch to “stand-by” while in the factory mode, the TV will show up in “normal
operation mode” as soon as the power is supplied again. The error buffer will not be cleared.

After leaving the Customer Service Mode, the original settings are restored.
Possibility to use “CH+” or “CH-” for channel surfing, or enter the specific channel number on the RC.
How to Activate CSM
To activate CSM, press the following key sequence on a standard remote control transmitter: “123654” (do not allow the display to time out between entries while keying the sequence). After entering the Customer Service Mode, the following items are displayed. use the Right/Left keys to display the next/previous menu items
Note: Activation of the CSM is only possible if there is no (user) menu on the screen

How to Navigate
By means of the “CURSOR-DOWN/UP” knob (or the scroll wheel) on the RC-transmitter, can be navigated through the menus.

How to Exit CSM
To exit CSM, use one of the following methods.
Press the MENU/HOME button on the remote control transmitter.
Press the POWER button on the remote control transmitter.
Press the POWER button on the television set.

Software Upgrading, Error code and Panel Code

Software Upgrading
The following update is for .pkg file.
1. Rename the file to “upgrade_loader.pkg”
2. Prepare a USB memory.
3. Copy the software to USB flash disk(root directory).
4. Switch off the TV and Insert the USB memory stick that contains the software update files in one of the TV’s USB 2.0 ports.
Note: It contains USB3.0 port, if connect on it, the software may can’t be detected.
5. Switch on the TV. The TV will detect the USB memory s tick automatically. Then a window jumps out as below

6. When the TV software is updated, the TV will turn on again automatically. Remove your USB flash drive.
7. We can enter in CSM or Factory mode to check the current software version.

The following update is for .upg file.
 Ready for F/W Upgrade
1. Rename the file to “autorun.upg”
2. Prepare a USB memory.
3. Copy the software to USB flash disk(root directory).
4. Switch on the TV and Insert the USB memory stick that contains the software update files in one of the TV’s USB 2.0 ports
Note the version of this F/W before you change the software file name

1. Press [Quick settings], then Choose [Update Software] in the Settings menu

2. Choose [Local Updates], then press OK

3. Select the file that you downloaded and press OK

4. Choose [Update], then choose [Start] on following step

 5. Upgrade in progress

Check the SW version
1. After burning software, TV will restart
2. Press “
123654”, enter Customer service mode to check if the software version is correct.
Caution: Please make sure that software upgrade is finished before unplug the USB and AC power!

Error Code

Error codes are required to indicate failures in the TV set. In principle a unique error code is available for every:
• Activated (SW) protection.
• Failing I2C device.
• General I2C error.
The last five errors, stored in the NVM, are shown in the Service menu’s. This is called the error buffer.
The error code buffer contains all errors detected since the last time the buffer was erased. The buffer is written from left to right. When an error occurs that is not yet in the error code buffer, it is displayed at the left side and all other errors shift one position to the right.
An error will be added to the buffer if this error differs from any error in the buffer. The last found error is displayed on the left.
An error with a designated error code never leads to a deadlock situation. It must always be diagnosable (e.g. error buffer via OSD or blinking LED).
In case a failure identified by an error code automatically results in other error codes (cause and effect), only the error code of the MAIN failure is displayed.

How to Read the Error Buffer
You can read the error buffer in following ways:
• On screen via the SAM/CSM (if you have a picture).
Example:
– ERROR: 000 000 000 000 000: No errors detected
– ERROR: 013 000 000 000 000: Error code 13 is the last and only detected error
– ERROR: 034 013 000 000 000: Error code 13 was detected first and error code 34 is the last detected (newest) error
• Via the blinking LED procedure (when you have no picture).

Error codes overview
In this chassis only “layer 2” error codes are available and point to problems on the SSB. They are triggered by LED blinking when CSM is activated. Only the following layer 2 errors are defined:

How to Clear the Error Buffer
The error code buffer is cleared in the following cases:
• By using the CLEAR command in the SAM menu
• By using the CLEAR command in the Factory mode:

• By using the following key sequence on the remote control transmitter: “062599” directly followed by the OK button.
• If the contents of the error buffer have not changed for 50 hours, the error buffer resets automatically.
Note: If you exit SAM by disconnecting the mains from the television set, the error buffer is not reset.

Panel Code
Press the following key sequence on a standard RC transmitter: “062598” directly followed by MENU and “xxx”, where “xxx” is a 3 digit decimal value of the panel type: see column “Display Code” in below tab. After resetting the Display Code, restart the set immediately.

Power Supply Unit
All power supplies are a black box for Service. When defective, a new board must be ordered and the defective one must be returned, unless the main fuse of the board is broken. Always replace a defective fuse with one with the correct specifications! This part is available in the regular market.
Important delta’s with the platform are:
• New power architecture for LED backlight
• “Boost”-signal is now a PWM-signal + continuous variable
The control signals are:
• PS-ON
• Lamp “on/off”
• DIM (PWM) (not for PSDL)
In this manual, no detailed information is available because of design protection issues.
• +8.5V output (standby mode)
• +12 output (on-mode)
• +12V_audio (audio AMP power)
• Output to the display; in case of
- IPB: High voltage to the LCD panel
- PSL and PSLS (LED-driver outputs)
- PSDL (high frequent) AC-current.
Diversity
The diversity in power supply units is mainly determined by the diversity in displays.
The following displays can be distinguished:
• CCFL/EEFL backlight: power panel is conventional IPB

• LED backlight:
- side-view LED without scanning: PSL power panel
- side-view LED with scanning: PSLS power panel
- direct-view LED without 2D-dimming: PSL power panel
- direct-view LED with 2D-dimming: PSDL power panel.
PSL stands for Power Supply with integrated LED-drivers.
PSLS stands for a Power Supply with integrated LED-drivers with added Scanning functionality (added microcontroller).
PSDL stands for a Power Supply for Direct-view LED backlight with 2D-dimming.
DC/DC Converters
The on-board DC/DC converters deliver the following voltages(depending on set execution):
• +5V-SB, permanent voltage for the Stand-by Power system
• +3V3-STANDBY,voltage for IR/Key board
• +12V, input from the power supply for the panel common(active mode)
• +12V, input from the power supply for LNB supply
• +1V8, voltage for EMMC when TV on
• TUNER_3V3, supply voltage for tuner
• +5V-SW, input intermediate supply voltage for USB Power
• +12V-AUDIO1 for the AUDIO AMP
+1.2V_DEMOD voltage for Demodulator IC channel decoder
• +3V3SBI,voltage for WIFI

Power supply schematics 715G7734

Power supply schematic 715G7574

Amplifier schematic


Tuesday, August 03, 2021

Philips FX20, FX30, FX50 - Mini Speaker System – How to update the software – schematic diagram – disassemble procedure – Restore default - exploded view

 

The Software Upgrade way (Update software via USB):
1. Download the Software into the root directory of a USB storage device.
2. Rename the download software file, such as rename the "PCM_MCU_V12.bin"to"PCM_MCU.bin“.
3. Turn on the unit and switch to the USB source.
‐‐>"NO USB" is displayed.
4. Connect the USB storage device to the USB socket on the unit.
‐‐>"MCU UPD"(MCU update) is displayed.
5. Press ">|| " key to start upgrade.
‐‐>"UPGING"(upgrading) is displayed during upgrade. At completion of upgrade, the unit reboots automatically.
6. Delete the "PCM_MCU.bin" in the USB storage device, and repeat step 1>2>3>4>5 > to upgrade MPEG S/W, Rename software file, such as rename "PCM_MPEG_FX20_55_V13.bin"to"PCM_MPEG.bin".
‐‐>"MPEG UPD" is display.

Do not turn off the power or remove the USB storage device when the software update is in progress because you might damage the unit.

The Software Version to view:
1.Turn on the unit and switch to the DISC source.
‐‐>"NO DISC" is displayed.
2. Press "EJECT" key to open the door.
‐‐>"OPEN" is displayed.

3. Press the key STOP > PROG > NEXT in turn on remote control, the VFD will show such as “M1220P13”

Note: When view software version type, VFD can be show below information:

M0820P16

M08 MCU version

20: FX20 model, if this unit is 15/25/30/50/55,mean is FX15/FX25/FX30/FX50/FX55 model

P16: Mpeg version.

Restore default settings:
You can also restore the default settings of the unit.
Turn on the unit, in any source, press and hold both the key >|| and PRESET
on the front panel for more than three seconds. ‐‐>after a while, "RESET OK" is displayed. Then, the unit reboots automatically.

Disassembly

Step 1: Open the top cover. Remove 5 screws on the back panel and 2 screw on the left and right sides, then open the cover from the back panel side.

Step 2: Dismantle the loader. Disconnect the connectors on main board. Remove 2 screws beside the loader. Pull up the loader from the back panel side, the CD door will be separated at the same time.

How to dismantle the player

Step 3: Dismantle the loader bracket. Remove 1 screw on the bracket then remove the bracket directly.

Step 4: Dismantle the front panel. Disconnect the connectors on the main and power board. Release 2 buckles under the bottom plate and 2 screws on the left and right sides.

Step 5: Dismantle the USB board. Remove 2 screws on the board.
Buckles under the bottom plate and 2 screws on the left.
Step 6: Dismantle the IN board. Remove 2 screws on the board.
Step 7: Dismantle the support board. Remove 2 screws on the board.
Step 8: Dismantle the key board. Remove 2 screws on the board and disconnect the connector.

Step 9: Dismantle the front control board. pull out the volume knob. Remove 9 screws on the board.  Release the buckles on the board. Then pull out the board

Step 10: Dismantle the power board. Remove 4 screws on the board.

Step 11: Dismantle the main board. Remove 4 screws on the back panel and 2 screws on the board.

Block diagram for FX20

Circuit diagram – Front control board



Power board schematic



Main board schematic – SP8104WW


Schematic – Main board MCU


Schematic – Main board AMP ST518*2



Exploded view – FX20