AOC LE32S5970 and Philips 32PHG5102, Philips 43PFG5102, Philips 49PFG5102-Service mode, software update and power supply (SMPS) schematic (circuit diagram)

 

The schematic diagram of AOC LE32S5970 and Philips 32PHG5102 TPM17.7LIA  are similar

Applicable to: Philips: 32PHG5102/77, 32PHG5102/78, 32PHD5102/55, 43PFG5102/77, 43PFG5102/78, 43PFD5102/55, 49PFG5102/77, 49PFG5102/78, 49PFD5102/55

Service Modes - Service Alignment Mode (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.

SAM mode overview

Factory mode:

To activate the Factory mode, use the following method:
Press the following key sequence on the remote control transmitter: from the “menu/home” press “1999”, directly followed by the “Back/Return” button. 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:
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.

Factory mode overview

Customer Service Mode (CSM)

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.

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.

CSM overview

Software Upgrading, Error code and Panel Code

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.
Step 1: 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.

Step 3: 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.
Consult the Philips Service web portal for the order codes of the boards.
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

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Funai LH7 M22B LCD TV – Service mode, Initiliaze, Purity check mode, Full schematic diagram

 Funai 22″ COLOR LCD TELEVISION LH7-M22BB

This is for the LH7-M22BB (A9372EP) model.
For the LH7-M22BB (A9372EP) model, the letter (A9372EP) is printed on the Serial Number Label on the back of the unit. Refer to the Serial Number.

Serial number label

Electrical adjustments

Electrical adjustments are required after replacing circuit components and certain mechanical parts. It is important to perform these adjustments only after all repairs and replacements have been completed.  Also, do not attempt these adjustments unless the proper equipment is available.

Service mode

To enter into the service mode, you have to make a service remote control, out of supplied remote control.

How to make the Service remote control unit.

Cut “A” portion of the attached remote control unit as shown in Fig.

How to set up the service mode.

Use the service remote control unit.
2. Turn the power on.
3. Press the service button on the service remote control unit as shown.

Purity Check Mode

This mode cycles through full-screen displays of red, green, blue, and white to check for non-active pixels.
1. Enter the Service mode.
2. Each time pressing [7] button on the service remote control unit, the display changes as follows.

“When entering this mode, the default setting is White mode”

VCOM Adjustment

Operate the unit for more than 20 minutes.
2. Set the color analyzer and bring the optical receptor to the center on the LCD-Panel surface after zero point calibration as shown above.
Note: The optical receptor must be set perpendicularly to the LCD Panel surface.
3. Enter the Service mode.
4. Press [3] button on the service remote control unit.
5. Press [P- UP / DN ] buttons on the service remote control unit so that the color analyzer value becomes minimum.

Auto Calibration [Component]
Purpose: To bring the color adjustment of each component into standard alignment.
Symptom of Maladjustment: If this adjustment is incorrect, component signals do not reproduce the corresponding color.
1. Input 720P 100% Color Bar signal.
2. Enter the service mode.
3. To enter the Auto Calibration adjustment mode, press [6] button on the service remote control unit.
4. To start auto adjustment, press [P-UP ] button on the service remote control unit.
- In the auto adjustment mode, “Calibration Check” appears on the screen.
- Upon completion, “OK” appears on the screen.

Auto Calibration [PC]
Purpose: To bring the color adjustment of PC into standard alignment.
Symptom of Misadjustment: If this adjustment is incorrect, PC signals do not reproduce the corresponding color.
1. Input SVGA 100% White signal.
2. Enter the service mode.
3. To enter the Auto Calibration adjustment mode, press [5] button on the service remote control unit.
4. To start auto adjustment, press [P-UP ] button on the service remote control unit.
- In the auto adjustment mode, “Calibration Check” appears on the screen.
- Upon completion, “OK” appears on the screen.

The following adjustment normally are not attempted in the field. Only when replacing the LCD Panel then adjust as a preparation.

White Balance Adjustment [Video/Component/PC]
Purpose: To mix red, green and blue beams correctly for pure white.
Symptom of Maladjustment: White becomes bluish or reddish.

1. Operate the unit for more than 20 minutes.
2. [VIDEO input]
Input the White Raster (70%=70IRE, 40%=40IRE).
[Component input]
Input the 720P White Raster (70%=70IRE, 40%=40IRE).
[PC input]
Input the SVGA White Raster (70%=70IRE, 40%=40IRE).

3. Set the color analyzer to the CHROMA mode and bring the optical receptor to the center on the LCD-Panel surface after zero point calibration as shown below.
Note: The optical receptor must be set perpendicularly to the LCD Panel surface.

4. Enter the Service mode. Press [Vol -] button on the service remote control unit and select “C/D” mode.
5. [CUTOFF]
Press [3] button to select “COB” for Blue Cutoff adjustment. Press [1] button to select “COR” for Red Cutoff adjustment.
[DRIVE]
Press [6] button to select “DB” for Blue Drive adjustment. Press [4] button to select “DR” for Red Drive adjustment.
6. In each color mode, press [P-UP / DN ] buttons to adjust the values of color.
7. Adjust Cutoff and Drive so that the color temperature becomes 9200°K (x= 0.286 / y= 0.295 ±0.005).
8. Change the video signal input in step 2 and repeat from step 3.

HOW TO INITIALIZE THE LCD TELEVISION

1. Turn the power on.
2. To enter the service mode, press the service button on the service remote control unit.
- To cancel the service mode, Press [POWER ] button on the remote control unit.
3. Press [ i ] button on the service remote control unit to initialize the LCD television.
4. "INITIALIZED" will appear in the upper right of the screen. "INITIALIZED" color will change to green from red when initializing is complete.

Schematic diagrams

Wiring diagram

Sony KV21LT1B FD Trinitron CRT TV – service mode, circuit adjustments and schematic diagram

 

KV-21LT1B RM-887 French SCC-Q54C-A, KV-21LT1E RM-887 Spanish SCC-Q53C-A, KV-21LT1K RM-887 OIRT SCC-Q51C-A, KV-21LT1U RM-887 UK SCC-Q52C-A, KV-21FT2K RM-887 OIRT SCC-Q51E-A

The identification of errors within the FE-2 chassis is triggered in one of two ways :- 1: Busy or 2: Device failure to respond to IIC. In the event of one of these situations arising the software will first try to release the bus if busy (Failure to do so will report with a continuous flashing LED) and then communicate with each device in turn to establish if a device is faulty. If a device is found to be faulty the relevant device number will be displayed through the LED (Series of flashes which must be counted) See table 1., non fatal errors are reported using this method.  Each time the software detects an error it is stored within the NVM. See Table 2.

How to enter into Table 2

1. Turn on the main power switch of the TV set and enter into the ‘Standby Mode’.
2. Press the following sequence of buttons on the Remote Commander.

CIRCUIT ADJUSTMENTS

Service adjustments to this model can be performed using the supplied Remote Commander RM-887.

How to enter into the Service Mode

1. Turn on the main power switch and enter into the stand-by mode.
2. Press the following sequence of buttons on the Remote Commander.

‘TT—’ will appear in the upper right corner of the screen.  Other status information will also be displayed.

3. Press ‘MENU’ on the remote commander to obtain the following menu on the screen.

4. Move to the corresponding adjustment item using the up or down arrow buttons on the Remote Commander.
5. Press the right arrow button to enter into the required menu item.
6. Press the ‘Menu’ button on the Remote Commander to quit the Service Mode when all adjustments have been completed.

Note
• Before performing any adjustments ensure that the correct model has been selected in the ‘Model Setting’ menu.
• After carrying out the service adjustments, to prevent the customer accessing the ‘Service Menu’ switch the TV set OFF and then ON.

Sub Brightness Adjustment

1. Input a Monoscope pattern.
2. Press ‘TEST’ ‘TEST’ 13 on the Remote Commander.
3. Adjust the ‘Sub-Brightness’ data so that there is barely a difference between the 0 IRE and 10 IRE signal levels.

Sub Contrast Adjustment

1. Input a video signal that contains a small 100% white area on a black background.
2. Connect an digital voltmeter to Pin 10 of J701 [C Board].
3. Adjust the Sub-Contrast [‘TT11’] to obtain a voltage of 95 +0,- 5V

Sub Color Adjustment

1. Receive a PAL color bar signal.
2. Connect an oscilloscope to Pin 3 of CN504 [A Board].
3. Enter into the ‘Service’ service menu.
4. Adjust the ‘Sub Color’ data so that the Cyan, Magenta and Blue color bars are of equal levels as indicated below.
Note:
Ensure that no signal is applied to the Antenna socket while carrying out the following IF adjustments.

Tuner AGC Adjustment

1. Set the “AGC adjust” register value: 

• For destination France set the value to 6.
• All other destinations set the value to 0

2. Receive a signal of 64dBuV / 75 ohm terminated [62dBuV / 75 ohms for B model] via the tuner antenna socket.
3. Connect a voltmeter to pin1 of TU101 [print side of A Board] or to the AGC pin of CN001 [mount side of A Board].
4. Confirm that the AGC voltage is 3.5volts +/- 0.3volts.
5. If adjustment is required, enter into the ‘Test Menu’.
6. Select the ‘AGC Adjust’ menu item.
7. Adjust the data using the left and right arrow buttons on the Remote Commander to obtain a voltage of 3.5V +/- 0.3V

Deflection System Adjustment

1. Enter into the ‘Geometry’ service menu.
2. Select and adjust each item in order to obtain the optimum image.

TEST MODE 2:

Is available by pressing the ‘TEST’ button twice, OSD ‘TT’ appears.
The functions described below are available by selecting the two numbers. To release the ‘Test mode 2’, press 00, 10, 20 ... twice or switch the TV set into Stand-by mode. In ‘TT Menu’ mode, it is possible to remove the Menu from the screen by pressing the Speaker Off button once. Pressing the Speaker OFF button a second time will cause the Menu to reappear. The function is kept even when the menu is not displayed on screen.

PWB & Circuit diagrams