PHILIPS 32PFL3404 -77 -78, 42PFL3604 -77-78, CLICK LCD TV SERVICE MODE AND ADJUSTMENTS, SOFTWARE UPDATE, SMPS SCHEMATIC, LED BLINKING CODES

Philips 32 and 42 inch LCD TVs-Power LED blinking codes, firmware update, SMPS [Power board] schematic and fault finding, service mode

Service Alignment Mode (SAM)

Via a standard RC transmitter: key in the code “062596” directly followed by the “i+/INFO” button.

– Op. Hours. During the life time cycle of the TV, a life timer is kept. It counts the normal operation hours, not the Stand-by hours. The actual value of the life timer is displayed in SAM [Service Alignment Mode] in decimal value. For every two startups the counter increases by one. Minimum 5 digits are displayed in decimal digits.

 details:
• Every 2x cold start-ups, to display a picture, increases the counter by 1 (i.e. interrupt the mains supply 2x while the set is ON).
• Every 2x warm start-ups (from Stand-by), to display a picture, increases the counter by 1.
• Every hour of normal operating increases the counter by 1 (i.e. if a set is continue ON for 2 hours,then increase the counter by 2).
• Stand-by hour are NOT counted.
– Main SW ID. Displays the loaded main SW version.
– Error Code x (where “x” is 1 to 5). The most recent error is displayed at the upper position.
To clear Codes:

When “arrow right” is pressed and then the “OK” button is pressed, the error buffer is reset.
• Options:

Choosing the CTN will set the options.
• RGB Align:

 This will activate the alignments sub-menu.
• NVM Editor:

This will give the opportunity to directly change values in the NVM by selecting the address and value. Use decimal values.

• NVM Copy:

For easy transfer of NVM settings
Copy to USB: 

To upload several settings from the TV to an USB stick. See 5-1 USB Copy content. To upload the settings, press “arrow right” (or the “OK button), confirm with “OK” and wait until “OK” appears. Now the settings are stored onto the USB stick can be used to download to another TV or other SSB. Uploading is of course only possible if the software is running and if a picture is available. This method is created to be able to save the customer’s TV settings and to store them into another SSB.
Copy from USB:

 To download several settings from the USB stick to the TV. Same way of working as with uploading. To make sure that the download of the channel list from USB to the TV is executed properly, it is necessary to restart the TV and tune to a valid preset if necessary.

• Tuner. This will activate the alignments sub-menu.

• Auto ADC. This will activate the alignments sub-menu.
How to Navigate
• In SAM, the menu items can be selected with the “Arrow up/down” key on the RC-transmitter. The selected item will be highlighted. When not all menu items fit on the screen, move the “Arrow up/down” key to display the next/previous menu items.
• With the “Arrow Left/Right” keys, it is possible to:
– (De) activate the selected menu item.
– (De) activate the selected sub menu.
• With the “OK” key, it is possible to activate the selected action.
• With the “Menu/Home” key, it is possible to go back to the previous selection.
How to Exit SAM
Switch the set to STAND-BY via the RC-transmitter.

Error Codes

The error code buffer contains all detected errors since the last time the buffer was erased. The buffer is written from top to bottom (or left to right), new errors are logged at the top/left side, and all other errors shift one position to the bottom/right.

When an error occurs, it is added to the list of errors, provided the list is not full. When the error buffer is full, then the new error is not added, and the error buffer stays intact (history is maintained).
To prevent that an occasional error stays in the list forever, the error is removed from the list after more than 50 hrs. of operation/
There is a simple blinking LED procedure for board level repair (home repair) the so called LAYER 1 errors, next to the existing errors which are LAYER 2 errors:
• LAYER 1 errors are one digit errors
• LAYER 2 errors are two digit errors.

When is LAYER 1 or 2 available
• In SDM mode: When SDM is entered via Remote Control code, LAYER 2 is displayed via blinking LED.
Error display on screen
If possible, check the entire contents of the error buffer. In some situations, an error code is only the result of another error code and not the actual cause (e.g. a fault in the protection detection circuitry can also lead to a protection).
In case of non-intermittent faults, clear the error buffer before starting to repair (before clearing the buffer, write down the content, as this history can give significant information). This to ensure that old error codes are no longer present.

How to Read the Error Buffer
Use one of the following methods:
• On screen via SAM (only when a picture is visible). E.g.:
– 000 000 000 000 000: No errors detected
– 017 000 000 000 000: Error code 17 is the last and only detected error.
– 015 017 000 000 000: Error code 17 was first detected and error code 15 is the last detected error.
• Via the Blinking LED procedure.
• Via ComPair.
How to Clear the Error Buffer
Use one of the following methods:
• By activation of the “Clear Codes” command in the SAM menu.
• With a normal RC, key in sequence “062599” followed by “OK”.

Software Upgrading

Main Software Upgrade
In “normal” conditions, so when there is no major problem with the TV, the main software and the default software upgrade application can be upgraded with the “upgrade.bin”. This can also be done by the consumers themselves via the Software Update Assistant in the user menu (see DFU), but they will have to download their software from the commercial Philips website.

1. Copy the “upgrade.bin” file to the root of the USB stick. 2. Power “off” the TV and remove all memory devices. 3. Insert the USB stick that contains the downloaded software upgrade. 4. Switch “on” the TV, and activate the Main menu with the “Menu/House” key on the remote control. 5. In the Main menu, go to the “Software update” item. 6. Press “OK” key to go to the sub-menu. 7. Select “Local updates” in the sub-menu and press the “OK” key to enter the Software Update application. 8. You will be prompted to cancel or to proceed with the software updating. 9. To proceed, select “Update” and press the “OK” key to enter the next menu. In the next menu select “Start” and press “OK” key to start the software update. 10. Upgrading will now begin and the progress of the updating will be displayed. After the software updating is completed, the TV will automatically restart.

NB: Do not switch off the TV, or unplug the power chord from AC socket while software upgrading is going on.  Use of a UPS is recommended when upgrading the software. 

Stand-by Software Upgrade
In this chassis it is not possible to upgrade the Stand-by software via a USB stick or ComPair [Computer Pairing]. Please order a preprogrammed device via the Philips Spare Part web portal.

Upgrade HDMI EDID NVM
To upgrade the HDMI EDID, pin 7 of the EDID NVM [1] has to be short circuited to ground.

Upgrade VGA EDID NVM
To upgrade the VGA EDID NVM, pin 7 of the EDID NVM [2] has to be short circuited to ground.

Display code Changing the display option code via a standard RC Key in the code “0 6 2 5 9 8 MENU x x x” (where x x x is the 3 digit decimal display code of the used display *). • Keep the RC close to the IR receiver, and make sure the LED blinks when entering a code. • Key in all codes in one sequence, without pauses. If the above action is successful, the front LED will go out as an indication that the RC sequence was correct. After the display option is changed in the NVM, the TV will go to the Stand-by mode. If the NVM was corrupted or empty before this action, it will be initialised first (loaded with default values). This initialising can take up to 20 seconds.

This display code can be found on the side sticker and/or on the rear sticker.

Option codes
Select this sub menu to set all options at once by selecting the correct model number. The so-called “Project ID” represents a number of different options, all related to that model number.
By toggling the “arrow left/right” buttons on the RC, the correct model number can be selected.
• After changing the option (or Project ID), save it by leaving the sub menu via the “Menu/House” button on the RC.

• The new option setting is only active after the TV is switched “off/on” with the mains switch (the NVM is then read again).

Reset of Repaired SSB
When a repaired SSB will be used in an other TV, it is very important that the correct info is written into the NVM w.r.t. 12NC of the SSB, production serial number of the TV, 12NC of display and PSU, etc.
To set all this, the ComPair tool can be used, or the NVM can be edited directly via the NVM editor (in SAM). Find below the addresses of these items. Use the decimal values.
In case of a display replacement, reset the “Operation hours” to “0”, or to the operation hours of the replacement display.

 SMPS schematic of 32"

SMPS schematic of 42"

DC-DC SSB schematic

IPL42L PSU [Power Supply Unit]

The key component ICs are:
• Stand-by power supply IC: FSQ510 (Fairchild).
• PFC control IC: L6562 (ST).
• 24V PWM control IC: FA5571N (FUJI).
• Inverter high voltage control IC: OZ9926 (O2).

Fault Finding Normal PSU working order: • Connect the 220V AC power plug. • The 3.3V Stand-by power supply (Stand-by uP U801) will start. This is a “single-ended fly-back regulator”. For a good functioning of this part, check the availability of 1.25V on U803 (TL431). • On connector P802, signal line “PS_ON” will go “high” (3V3) and relay K801 will be activated. • Also capacitors C811/C812 will be charged, supplying IC806 with electricity. This will start the PFC circuit and generate the +24 V control. • Now, IC805 will start, and will generate the 24V output. • On connector P802, signal “DIM” sets the PWM dimming status. • On connector P802, when signal “BL-ON” goes “high”, the high voltage Inverter (IC901, OZ9926A) will start.

The Blinking LED Procedure (LAYER-2 codes)

Some errors need several minutes before they start blinking or before they will be logged. So in case of problems wait 2 minutes from start-up onward, and then check if the front LED is blinking or if an error is logged.

The software is capable of identifying different kinds of errors.
Because it is possible that more than one error can occur over time, an error buffer is available that is capable of storing the last five errors that occurred. This is useful if the OSD is not working properly.
Errors can also be displayed by the blinking LED procedure.
The method is to repeatedly let the LED pulse with as many pulses as the error code number, followed by a time period of1.5 seconds in which the LED is “off”. Then this sequence is repeated.
E.g. error code 4 will result in four times the sequence LED “on” for 0.25 seconds / LED “off” for 0.25 seconds. After this sequence the LED will be “off” for 1.5 seconds. Any RC command terminates this sequence.
Displaying the entire error buffer
The entire error buffer can be displayed when service mode “SDM” is entered (by remote control command 062596<MENU>). When in protection, this sequence will not work, but than LAYER-1 error code should suffice.
In order to avoid confusion with RC signal reception blinking, this blinking procedure is terminated when a RC command is received.

How to Activate
Use one of the following methods:
• Activate the CSM. The blinking front LED will show only the latest LAYER-1 error.
• Activate the SDM. The blinking front LED will show the entire contents of the LAYER-2 error buffer