Monday, October 20, 2014

HOW TO ENTER SERVICE MODE AND ADJUST DATA VALUES TO PHILIPS LCD TVS


Service Modes
Service Default mode (SDM) and Service Alignment Mode (SAM) offers several features for the service technician, while the Customer Service Mode (CSM) is used for communication between the call centre and the customer.  This chassis also offers the option of using ComPair, a hardware interface between a computer and the TV chassis. It offers the abilities of structured troubleshooting, error code reading, and software version readout for all chassis.  Minimum requirements for ComPair: a Pentium processor, a Windows OS, and a CD-ROM drive.
Service Default Mode (SDM)
Purpose
* To create a predefined setting for measurements to be made.
* To override software protections.
* To start the blinking LED procedure.
* To inspect the error buffer.
* To check the life timer
Specifications
# Tuning frequency: 475.25 MHz
# Color system: PAL-BG.
# All picture settings at 50%(brightness, color contrast, hue).
# Bass, treble and balance at 50 %; volume at 25 %.
# All service-unfriendly modes (if present) are disabled. The service unfriendly modes are:
> Timer / Sleep timer.
> Child / parental lock.
> Blue mute.
> Hotel / hospital mode.
> Auto shut off (when no “IDENT” video signal is received for 15 minutes).
> Skipping of non-favorite presets / channels.
> Auto-storage of personal presets.
> Auto user menu time-out.
> Auto Volume Leveling (AVL).
How to enter
To enter SDM, use one of the following methods:
 Press the following key sequence on the remote control transmitter: “062596” directly followed by the MENU button (do not allow the display to time out between entries while keying the sequence).
 Short "Service" jumpers on the small signal board during cold start and apply mains (see Figure "Service jumpers").  Then press the mains button (remove the short after startup).
Caution: Entering SDM by shorting "Service" jumpers will override the +5V-protection. Do this only for a short period.  When doing this, the service-technician must know exactly what he is doing, as it could damage the television set.
SERVICE JUMPERS
After entering SDM, the following screen is visible, with SDM in the upper right corner of the screen to indicate that the television is in Service Default Mode.
How to navigate
Use one of the following methods:
 * When you press the MENU button on the remote control, the set will switch on the normal user menu in the SDM mode.
* On the TV, press and hold the VOLUME DOWN and press the CHANNEL DOWN for a few seconds, to switch from SDM to SAM and reverse.
How to Exit
Switch the set to STANDBY by pressing the mains button on the remote control transmitter or the television set.  If you turn the television set off by removing the mains (i.e., unplugging the television) without using the mains button, the television set will remain in SDM when mains is re-applied, and the error buffer is not cleared.
Service Alignment Mode (SAM)
Purpose
• To change option settings.
• 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.
• AKB switching.
• Software alignments (Tuner, White Tone, Geometry & Audio).
• NVM Editor.
• ComPair Mode switching.
How to Enter
To enter SAM, use one of the following methods:
• Press the following key sequence on the remote control transmitter: “062596" directly followed by the OSD/STATUS button (do not allow the display to time out between entries while keying the sequence).
• Or via ComPair.
After entering SAM, the following screen is visible, with SAM in the upper right corner of the screen to indicate that the television is in Service Alignment Mode.
Menu Explanation
1.LLLLL. This represents the run timer. The run timer counts normal operation hours, but does not count standby hours.
2.AAABCD-X.Y. This is the software identification of the main microprocessor:
>A= the project name (LC41).
>B= the region: E= Europe, A= Asia Pacific, U= NAFTA, L= LATAM.
>C= the software diversity:
• Europe: T= 1 page TXT, F= Full TXT, V= Voice control.
• LATAM and NAFTA: N= Stereo non-dBx, S=Stereo dBx.
• Asian Pacific: T= TXT, N= non-TXT, C= NTSC.
• ALL regions: M= mono, D= DVD, Q= Mk2.
>D= the language cluster number.
>X= the main software version number (updated with a major change that is incompatible with previous versions).
>Y= the sub software version number (updated with a minor change that is compatible with previous versions).
>EEEEEE= the scaler sw cluster
>F= the main sw version no.
>GG= the sub-version no.
3.SAM. Indication of the Service Alignment Mode.
4.Error Buffer. Shows all errors detected since the last time the buffer was erased. Five errors possible.
5.Option Bytes. Used to set the option bytes. See “Options” in the Alignments section for a detailed description. Seven codes are possible.
6.Clear. Erases the contents of the error buffer. Select the CLEAR menu item and press the MENU RIGHT key. The content of the error buffer is cleared.
7.Options. Used to set the option bits. See “Options” in the Alignments section for a detailed description.
8.Tuner.Used to align the tuner. See “Tuner” in the Alignments section for a detailed description.
9.White Tone. Used to align the white tone. See “White Tone” in the Alignments section for a detailed description.
10.Audio. No audio alignment is necessary for this television set.
11.NVM Editor. Can be used to change the NVM data in the television set. See table “NVM data” further on.
12.SC NVM Editor.Can be used to edit Scaler NVM.
13.ComPaIr. Can be used to switch on the television to In System Programming (ISP) mode, for software uploading via ComPair.
Caution: When this mode is selected without compare connected, the TV will be blocked. Remove the AC power to reset the TV
How to Navigate
• In SAM, select menu items with the MENU UP/DOWN keys on the remote control transmitter. The selected item will be highlighted. When not all menu items fit on the screen, use the MENU UP/DOWN keys to display the next / previous menu items.
• With the MENU LEFT/RIGHT keys, it is possible to:
> Activate the selected menu item.
> Change the value of the selected menu item.
> Activate the selected submenu.
• In SAM, when you press the MENU button twice, the set will switch to the normal user menus (with the SAM mode still active in the background). To return to the SAM menu press the MENU or STATUS/EXIT button.
• When you press the MENU key in while in a submenu, you will return to the previous menu.
How to Store SAM settings
To store the settings changed in SAM mode, leave the top level SAM menu by using the POWER button on the remote control transmitter or the television set.
How to Exit
Switch the set to STANDBY by pressing the mains button on the remote control transmitter or the television set.  If you turn the television set “off” by removing the mains (i.e., unplugging the television) without using the mains button, the television set will remain in SAM when mains is re-applied, and the error buffer is not cleared.
Customer Service Mode (CSM)
Purpose
The Customer Service Mode shows error codes and information on the TV’s 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 Enter
To enter CSM, press the following key sequence on the remote control transmitter: “123654” (do not allow the display to time out between entries while keying the sequence).  Upon entering the Customer Service Mode, the following screen will appear:
Menu Explanation
1. Indication of the decimal value of the operation hours counter, Software identification of the main microprocessor
(see "Service Default or Alignment Mode" for an explanation), and the service mode (CSM= Customer Service Mode).
2. Displays the last five errors detected in the error code buffer.
3. Displays the option bytes.
4. Displays the type number version of the set.
5. Reserved item for P3C call centers (AKBS stands for
Advanced Knowledge Base System).
6. Indicates the television is receiving an "IDENT" signal on the selected source. If no "IDENT" signal is detected, the display will read "NOT TUNED"
7. Displays the detected Colour system (e.g. PAL/NTSC).
8. Displays the detected Audio (e.g. stereo/mono).
9. Displays the picture setting information.
10. Displays the sound setting information.
How to Exit
To exit CSM, use one of the following methods:
• Press the MENU, STATUS/EXIT, or POWER button on the remote control transmitter.
• Press the POWER button on the television set.
Problems and Solving Tips Related to CSM
Picture Problems
Note: The problems described below are all related to the TV settings. The procedures used to change the value (or status) of the different settings are described.
Picture too Dark or too Bright
If:
• The picture improves when you press the AUTO PICTURE button on the remote control transmitter, or
• The picture improves when you enter the Customer Service Mode,
Then:
1. Press the AUTO PICTURE button on the remote control transmitter repeatedly (if necessary) to choose PERSONAL picture mode.
2. Press the MENU button on the remote control transmitter. This brings up the normal user menu.
3. In the normal user menu, use the MENU UP/DOWN keys to highlight the PICTURE sub menu.
4. Press the MENU LEFT/RIGHT keys to enter the PICTURE sub menu.
5. Use the MENU UP/DOWN keys (if necessary) to select BRIGHTNESS.
6. Press the MENU LEFT/RIGHT keys to increase or decrease the BRIGHTNESS value.
7. Use the MENU UP/DOWN keys to select PICTURE.
8. Press the MENU LEFT/RIGHT keys to increase or decrease the PICTURE value.
9. Press the MENU button on the remote control transmitter twice to exit the user menu.
10. The new PERSONAL preference values are automatically stored.
White Line around Picture Elements and Text
If:
The picture improves after you have pressed the AUTO PICTURE button on the remote control transmitter,
Then:
1. Press the AUTO PICTURE button on the remote control transmitter repeatedly (if necessary) to choose PERSONAL picture mode.
2. Press the MENU button on the remote control transmitter. This brings up the normal user menu.
3. In the normal user menu, use the MENU UP/DOWN keys to highlight the PICTURE sub menu.
4. Press the MENU LEFT/RIGHT keys to enter the PICTURE sub menu.
5. Use the MENU UP/DOWN keys to select SHARPNESS.
6. Press the MENU LEFT key to decrease the SHARPNESS value.
7. Press the MENU button on the remote control transmitter twice to exit the user menu.
8. The new PERSONAL preference value is automatically stored.
Snowy Picture
Check CSM line 6. If this line reads “Not Tuned”, check the following:
• Antenna not connected. Connect the antenna.
• No antenna signal or bad antenna signal. Connect a proper antenna signal.
• The tuner is faulty (in this case line 2, the Error Buffer line, will contain error number 10). Check the tuner and replace/ repair the tuner if necessary.
Black and White Picture
If:
• The picture improves after you have pressed the AUTO PICTURE button on the remote control transmitter,
Then:
1. Press the AUTO PICTURE button on the remote control transmitter repeatedly (if necessary) to choose PERSONAL picture mode.
2. Press the MENU button on the remote control transmitter. This brings up the normal user menu.
3. In the normal user menu, use the MENU UP/DOWN keys to highlight the PICTURE sub menu.
4. Press the MENU LEFT/RIGHT keys to enter the PICTURE sub menu.
5. Use the MENU UP/DOWN keys to select COLOUR.
6. Press the MENU RIGHT key to increase the COLOUR value.
7. Press the MENU button on the remote control transmitter twice to exit the user menu.
8. The new PERSONAL preference value is automatically stored.
Menu Text not Sharp Enough
If:
• The picture improves after you have pressed the AUTO PICTURE button on the remote control transmitter,
Then:
1. Press the AUTO PICTURE button on the remote control transmitter repeatedly (if necessary) to choose PERSONAL picture mode.
2. Press the MENU button on the remote control transmitter.  This brings up the normal user menu.
3. In the normal user menu, use the MENU UP/DOWN keys to highlight the PICTURE sub menu.
4. Press the MENU LEFT/RIGHT keys to enter the PICTURE sub menu.
5. Use the MENU UP/DOWN keys to select PICTURE.
6. Press the MENU LEFT key to decrease the PICTURE value.
7. Press the MENU button on the remote control transmitter twice to exit the user menu.
8. The new PERSONAL preference value is automatically stored.