HOW TO DISCHARGE THE ANODE OF THE PICTURE TUBE

     If you do not feel comfortable performing these repairs, or feel you are not qualified to perform these repairs in a safe manner, please do not risk trying to do so. Seek the assistance of a qualified service technician.  Always unplug TV’s AC power cord from the wall before:  Removing or reinstalling any component, printed circuit board, module, or a plug connection.

     Never use a heat sink as a ground connection for your test equipment. You should find the proper chassis ground for this.

     If you are working on a CRT type projection TV set, you have three picture tubes that should be discharged to prevent accidental shock. You can discharge the picture tube’s anode at any of the R, G, or B outputs on the High Voltage distribution block only by:

     First connecting one end of an insulated clip lead to the ground on the back of the picture tube, or the mounting plate of the picture tube. Then touch the other end of the insulated clip lead to the wire coming out of the High voltage distribution block, or by using a long handled screwdriver, with the clip lead attached and slid up underneath the rubber boot on the picture tube High Voltage connection.

     All TV sets that have a picture tube will have a high voltage transformer with a heavy red wire that runs up and connects to the picture tube with a suction cup. Under there is an average of 32,000 volts when the sets on. Even when the set is off, it can hold a large electrical charge. If it zaps or bites you, it can make a grown man cry, and not only that, can stop your heart! Therefore, the point is to never ever stick a screwdriver under the HV cap even if it is unplugged

     If the cap has to be removed, attach one end of a clip lead to the metal exposed strap that is around the picture tube, and the other end to the screwdriver. Without the metal blade of the screwdriver being exposed to you, slide the screwdriver under the cap slowly. There should be a little pop if there is any voltage left. Wait for a second or two, remove the screwdriver, and pinch the top of the cap perpendicular to the wire while pulling up on it. Never pull on the wire. With the cap off, clip the clip lead to the anode connection on the tube while the other end stays on the grounding strap.

PHILIPS - DV ...... SERIES TVs_ SERVICE MODE_ERROR CODES AND FAULT FINDING _Service Help

SERVICE ALIGNMENT MODE [SAM]

PURPOSE:

• To perform alignments.
• To change option settings.
• To display / clear the error code buffer.

SPECIFICATIONS

• Operation hours counter.
• Software version.
• Option settings.
• Error buffer reading and erasing.
• Software alignments.

TO ENTER:

Use one of the following methods:

1. Use a standard customer RC-transmitter and key in the code ‘062596’ directly followed by the OSD / STATUS button or
2. Via compare.

TO NAVIGATE

Use one of the following methods:

• When you press the MENU button on the remote control, the set will switch between the SDM and the normal user menu (with the SDM mode still active in the background).  Return to the SDM screen with the OSD / STATUS button.
• When you press the OSD / STATUS button on the remote control, the menu will show or hide the error buffer. This feature is available to prevent interference during waveform measurements.
• 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.

TO EXIT [SAM]

• Switch the set to STANDBY by pressing the power button on the remote control transmitter (if you switch the set 'off' by removing the AC power, the set will return in SDM when AC power is re-applied). The error buffer is cleared.
• In SAM, select menu items with the CURSOR UP/DOWN key on the remote control transmitter. The selected item will be highlighted. When not all menu items fit on the screen, move the CURSOR UP/DOWN key to display the next / previous menu items.
• With the CURSOR LEFT/RIGHT keys, it is possible to: 1.  (De)activate the selected menu item.  2.  Change the value of the selected menu item.  3.  Activate the selected submenu.
• 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 OSD / STATUS button [ i+ ].
• When you press the MENU key in a submenu, you will return to the previous menu.

Switch the set to STANDBY by pressing the power button on the remote control (if you switch the set 'off' by removing the AC power, the set will return in SAM when AC power is reapplied).  The error buffer is not cleared.

SAM WINDOW DISPLAY DESCRIPTIONS

1. LLLL This is the operation hours counter. It counts the normal operation hours, not the standby hours.
2. AAABCD-X.Y This is the software identification of the main micro controller:

 A = the project name (L01).

 B = the region: E= Europe, A= Asia Pacific, U= NAFTA, L= LATAM.

 C = the software diversity: C= NTSC, D= DVD, N= no TXT, T= TXT.

 D = the language cluster number.

 X = the main software version number.

 Y = the sub software version number

• SAM Indication of the actual mode.
• Error buffer Five errors possible.
• Option bytes Seven codes possible.
• Clear Erase the contents of the error buffer. Select the CLEAR menu item and press the CURSOR RIGHT key.  The content of the error buffer is cleared.
• Options To set the Option Bytes.
• AKB Disable (0) or enable (1) the ‘black current loop’ (AKB = Auto Kine Bias).
• Tuner To align the Tuner
• White Tone To align the White Tone.
• Geometry To align the Geometry.
• Audio: To align audio.

PHILIPS MAGNAVOX - 37MF437_42MF437_47MF437_47PFL5432D_42PFL5432D _ SERVICE MODE _ ERROR CODES

TO ENTER SERVICE MENU [FACTORY MENU]

• Press" Menu" in normal operation mode to enter OSD.
• Press "062596+Menu" on the button (RC) remote control in OSD.
• Press "Menu" again. The screen will appear "FAC" in top right corner.

OSD BEHAVIOR

Before press number key change OSD item

Now remove previous function, press number key then press OK will change value.

• Select Smart picture to display a list of predefined picture settings, each corresponding with specific factory settings.
• Personal refers to the personal preference settings of picture in the picture menu.

Note: This Magnavox TV has been set at the factory to look best in bright store environments, which typically use fluorescent lighting. As your home will likely not be as well lit as a store, we recommend that you cycle through the various smart picture modes to find the one that best suits your own viewing conditions. Most consumers will find that Natural is the correct choice.

You can press the Smart picture button on the remote control repeatedly to select either Personal, Rich, Natural, Soft, or Powersaver picture settings.

Note:   When you watch programs by Composite Video signal, it’s recommended to select Soft or  

             Power saving Mode via Smart picture. 

            The moment you are in a predefined Smart picture setting and you modify the Picture menu, all values of the menu will overwrite   those previously made in personal setting.

ERROR CODES

Error code          Event

0x01                   DDR error

0x02                   IIC bus error

0x03                   Tuner error

0x04                   Demod error

STR-G8626_STR-G5653_STR-F6654 _ POWER SWITCHING REGULATORS _ DETAILS

     The Series STR-G 8626/5653/F6654 is specifically designed to satisfy the requirements for increased integration and reliability in off-line quasi-resonant flyback converters. The series incorporates a high-precise error amplifying control and drive circuit with discrete avalanche-rated power MOSFET, featuring fewer external components, small-size and standard power supply.  Covering the power range from below 25 watts up to 300 watts for 100/115/230 VAC inputs, and up to 150 watts for 85 to 265 VAC universal input, these devices can be used in a range of applications, from battery chargers and set top boxes, to televisions, monitors, and industrial power supply units.  Cycle-by-cycle current limiting, under-voltage lockout with hysteresis, over-voltage protection, and thermal shutdown protects the power supply during the normal overload and fault conditions.  Low-current startup and a low-power standby mode selected from the secondary circuit completes a comprehensive suite of features. The series is provided in a five-pin overmolded SIP style package, affording dielectric isolation without compromising thermal characteristics.

FEATURES

• Flyback Operation with Quasi-Resonant Soft Switching for Low Power Dissipation and EMI
• Rugged Avalanche-Rated MOSFET
• Soft drive circuit MOSFET
• Adjustable MOSFET switching speed
• Choice of MOSFET Voltage and Rds(on)
• Full Over-Current Protection (no blanking)
• Under-Voltage Lockout with Hysteresis
• Over-Voltage Protection
• Direct Voltage Feedback
• Low Start-up Current (100 Amax)
• Low-Frequency, Low-Power Standby Operation
• Overmolded 5-Pin Package

CIRCUIT BLOCK DIAGRAM

PIN CONFUGURATION [STR-G5653 _ G-8626]

Pin number	Symbol	Function Description
1	D	MOSFET drain
2	S	MOSFET source
3	GROUND	GROUND
4	Vin	Supply voltage input for control circuit
5	OCP/FB	Over-current protection detection signal/ voltage-limiting signal input

PIN CONFUGURATION [STR-F6654]

Pin number	Symbol	Function Description
1	OCP/FB	Over-current protection detection signal/ voltage-limiting signal input
2	S	MOSFET source
3	D	MOSFET drain
4	Vin	Supply voltage input for control circuit
5	GROUND	GROUND

APEX - AVL 3076 APEX - AVL 2776 _ LCD TV _ SYSTEM BIOS UPGRADE PROCEDURE

Use RS-232 to link computer RS232 port (If no RS232 port can use USB transform) and LC2700W RS232 port.

• The CPU used for processing ISP need to burn LD0415.BIN to the LDROM of CPU.  (Have burned before shipping).
• Need to enter factory mode by press { (MENU) + (VOL+) + (VOL - ) } on OSD to execute ISP mode.

• Push Menu.  Push “►” button to access Factory Mode.

• Press”▼” button to “ISP” item.  When press “Vol+” TV will be locked.

• Execute ispwriter.exe file
• To execute CPU ispwriter.exe file on your PC, and the below screen appears:

• Move the cursor to click “Select Chip” button and select the type of CPU (W78E65).

• Move the cursor to click  [check] Program Start at APROM” to cancel the selection.

• Move the cursor to click “Select Bank0” button to select the wanted program. The file format is binary format instead of hex format.

• Select the Port Name on Communication Setting screen.

• Move the cursor to click “Connect” button to link. If the linking succeeds, below screen will appear.

• Click “Program All” button to auto-execute erase and program function. After execution below screen will appear. Click “confirm” button to finish the execution.

• To click “verify” button to execute verify function. After verification, below screen will appear. Click “confirm” button to finish the verify function

• After updating APROM program, disconnect ISP tool. Power on LCD TV again.

SCHNEIDER _ TV 17XL.4 _ SERVICE MODE _ ADJUSTMENTS

• The Info Menu appears on the left side of the screen by pressing the  “I” information key. The selected submenu appears to the right next to the information menu.
• The green marker is moved to the relevant sub-menu item with the {_ / _} buttons. The marker moves to the selected sub-menu by pressing the { _ } button.
• Select < back with the {_ / _} buttons to return to the info menu from the various sub-menus. The marker moves back to the info menu by pressing the { _ } button.
• To store a setting, press the “OK” button; “OK.. save” is temporarily displayed in red. Press the  TV -button to leave the menu.

Settings in service mode menu:

• Version number:   mark the software version.  For a new initialization of the NVM values, without adjusting the geometry settings, the version number must be changed, stored, leave the service mode and start it again using the mains switch.
• NVM reset initializes all NVM values in the eeprom IC905 with geometry values. Setting to on, store, leave the service mode and start it again using the mains switch. Before the initialization you can write the service mode parameters in the alignment table.

The following settings should be checked after each initialization and, where necessary, set properly again:

picture size:    4:3 or 16:9 picture tube

picture tube:   type of the picture tube

Important: Change this value only, if is absolutely necessary.  A change is programming all parameters of the picture tube. If you can`t find the correct type of the picture tube, select “USER PICTUB” and set all parameters manual.

TO ENTER SERVICE MODE

• Before activating service mode set suited test pattern. Set medium brightness, color, contrast, sharpness, noise and picture mode.
• A standard 4:3 test pattern is necessary for the geometry adjustment. The chassis for 16:9 requires a 4:3 test pattern covering the entire area to be set in the decoder mode, thus creating a horizontal extension (horizontal ellipses).

To enter service mode, press the buttons "MUTE"  "Red" (picture menu) and ‘TV’ on remote control one after another.

KEY FUNCTIONS IN SERVICE MODE

Red button:          select menu line or digit

Buttons ▲ / ▼ :   select further parameters

Buttons ◄ ► :     change parameters

OK button:           store the changes

TV button:           leave Service Mode

Child lock-code global ON / OFF

OFF: During the search operation all channels are not "prepared" for a possible activation of the childproof lock and have to be individually set. 

ON: During the search operation all channels are "prepared" for a possible activation of the childproof lock.

Child lock-code reset

ON: To deactivate the childproof lock, set to ON.

After switching on with the mains switch again, the childproof lock is switched off.

G2 [screen] adjustment

After an operating time of approx. 30 minutes set a gray bar test pattern. Actuate the G2 controller to set the cathode with the largest value (measured) in such a way that the measured value only just changes from a single –digit numerical value to a two-digit value.

Focus adjustment

Set a test pattern and set color, brightness and contrast to nominal value. With Focus control set to optimum normal focus. For bi-focus tubes (16:9/32"-tubes with separate focus block) adjust the left control (FOC-L) so that horizontal lines are refocused to a minimum over the complete image width in vertical direction. Adjust the right control (FOC-H) so that vertical lines are refocused to a minimum in horizontal direction. The adjustment must be repeated reciprocally.

Cut off / white drive (black-white balance)

Cut off: Set the three cutoff values so that the darker grey areas turn achromatic. The default values of the cutoff setting points are 50. Leave the value of the cathode with the middle controlled value as it is, set the two other cathodes.

White drive: The default values of the White Drive setting points are 128. If the picture seems too “cold” reduce the white drive blue setting point. If the picture seems too “warm” turn the white drive red setting point back.

Hints for the real-flat picture tube

The surface of the screen is covered with a laminated and 40% light-absorbent film with a hard coating. Under no circumstances may this be damaged.

Under no circumstances:-

May the screen be wiped with conventional glass cleaning fluid.

May the screen be brought into contact with abrasive materials.

May soiling be removed by polishing or scouring.

To clean off sticky substances, the cloth can be moistened with acetone.

SCHNEIDER _ 29M432 _ SERVICE MODE _ ADJUSTMENTS

1. Before activating service mode, supply appropriate test picture. Set brightness, contrast, colour, contour and tone to medium values.
2. For geometry alignment a 4:3 test picture conforming to standards is required.
3. For 16:9 TV-sets a 4:3 test picture must be adjusted to a full-covering picture in panorama-mode.

TO ENTER SERVICE MODE

• To enter service-mode press[ MUTE => Red key and EXIT] keys consecutively on the remote control (RC), while TV is running.

REMOTE KEY FUNCTIONS IN SERVICE MODE

Red        key one line down

Blue      key one line up

▲          key select next menu-table

▼          key select previous menu-table

◄/►     keys change values

OK      key save the changes

EXIT     key exit Service-mode

SERVICE MODE SETTINGS

• Version number:   shows the implemented software version.  For new initialisation of the NVM values, without changing the geometry settings, change the version number, save, exit service mode and switch the TV-set off and on again.

NVM reset:   initializes all NVM values of the Eeprom IC906 including geometry values.

Set value to ON, save, exit service mode and switch the TV-set off and on again.

Prior to the initialization it´s helpful to write the service mode parameter values into the alignment table.

After initialization all service-mode settings have to be checked and readjusted if necessary.

MENU TABLE - 1

• Picture size:   4:3 or 16:9 picture tube (value is set automatically when picture tube type is changed) 
• Picture tube:   type of the picture tube.

Attention: Change this only, if is absolutely necessary. All picture tube related values will be changed automatically. If the right type of the picture tube is not available, select “USER PICTUBE” and set all parameters manually.

• TV – type::   standard B/G, I or multi tuner - type e.g. 313A Multi
• Front – av::   ON / OFF
• Scart number:: number of scart interfaces
• Forced PAL::  ON, if PAL TV-type
• Function keys::  1-4 (number of the F-keys on the remote control)
• VT pages ::  number of teletext memory pages
• Display mode ::  set to OFF (only for production).
• Test-pattern OFF :: or one of the different internal test pictures can be chosen.
• Auto. Format :: ON / OFF automatic format switching from 4:3 to 16:9 active or not.

MENU TABLE - 2

• Sleep timer (5min) ::  ON / OFF On: if there is no incoming signal for more than 5 minutes TV-set is automatically switched to standby-mode.
• ECO switch :: set to ON for units with ECO switch
• Child lock-code global :: ON / OFF

OFF: During automatic channel search all channels are set to free access. Channels which should be child-locked afterwards have to be set manually.

ON: During automatic channel search all channels are prepared for a possible activation of the childproof lock. Channels which should not be locked, afterwards have to be unlocked manually.

• Child lock-code reset :: OFF / ON to reset of the childproof lock-code, set value to ON, save, exit service mode and power off/on TV-set.
• Audio VCR mute ::  audio mute for VCR
• VT brightness :: teletext brightness
• VT contrast ::  teletext contrast
• OSD brightness :: OSD brightness
• OSD contrast :: OSD contrast
• OSD backgr. Color :: OSD background color
• OSD foregr. Color :: OSD font color
• VGA modus :: ON / OFF
• VPS/PDC display :: ON / OFF On: Channel identification can be shown by pressing the »yellow« key.
• Rotation :: ON / OFF picture rotation (option)

MENU TABLE-3

• Mode analog channel 2 :: OFF / AUTO / SENSOR / KEYS for TV sets without panel keys chose SENSOR, with panel keys: AUTO
• Display values :: ON / OFF OSD: numbers or bars to show the actual value
• Ext.scart :: set to 1 (for actual scart module)
• Waterglass/panorama :: ON / OFF activate / deactivate special picture effects (Effect 1+2)
• Low power standby :: ON / OFF option depending on chassis-version.

OTHER PARAMETERS

Format :: select the right picture format for geometry alignment

AGC ::  AGC alignment

Vertical amplitude :: adjust vertical image height.

Vertical position :: adjust vertical image position.

S-correction :: adjust vertical linearity.

Vertical symmetry :: adjust vertical symmetry (adjust S-correction against vertical symmetry)

Vertical bow :: adjust straightening of vertical lines.

Vertical angle :: adjust inclination of vertical lines

Horizontal position :: adjust horizontal image position.

Horizontal amplitude :: adjust image width.

Cushion :: adjust Pincushion (East/West-cushion).

Trapeze :: Set the vertical lines parallel.

Upper corner :: adjust vertical lines in the upper corners.

Upper corner 6^th :: adjust vertical lines in the very upper corners.

Lower corner :: adjust vertical lines in the lower corners.

Lower corner 6^th :: adjust vertical lines in the very lower corners.

Blanking phase left :: to adjust horizontal blanking phase on the left picture side (default value 170)

Blanking phase right :: to adjust horizontal blanking phase on the right picture side (default value 1210)

Chroma delay :: to adjust chroma to luma signal (just one value for all signals and sources).

Luma delay PAL :: to adjust luma to chroma signal on PAL picture (Luma delay PAL on tuner and scart are independent, adjust both of them).

Luma delay SECAM :: to adjust luma to chroma signal on SECAM picture (Luma delay SECAM on tuner and scart are independent, adjust both of them).

Luma delay NTSC :: to adjust luma to chroma signal on NTSC picture (just available on scart input).

DVCO :: The auxiliary colour carrier frequency automatically adjusts to its reference value. (read only value)

G2 ::  G2 adjustment [Screen Voltage Adjustment]

Cut off :: cut off / white drive.

SVM G1 :: adjust to optimised sharpness. (default value 45)

SVM delay :: adjust to optimised sharpness (default value 7)

Beam current limiter :: not active

Vert. pos OSD :: adjust vertical position of OSD.

Hor. pos OSD :: adjust horizontal pos. of OSD.

Vert. pos OSD (NTSC) :: adjust vertical position of OSD with NTSC standard.

Hor. pos OSD (NTSC) :: adjust horizontal position of OSD with NTSC standard.

Vert. pos VT :: adjust vertical position of teletext.

Vor. pos VT :: adjust the horizontal position of teletext.

Child lock reset :: to deactivate the child lock, set value to 1, save and exit service mode and switch off TV-set. After switching on the mains switch again, the childproof lock is switched off.

Border (16:9) right :: setting of the black border on the right side of 4:3 format and Zoom format (for 16:9 picture tubes only).

border (16:9) left :: setting of the black border on the left side of 4:3 format and Zoom format (for 16:9 picture tubes only).

## NVM addr. 0000 data 00 :: With the »Red« key of the remote control, individual numbers of the NVM address and the data can be chosen and changed with ◄ / ► keys. The complete address is a four-digit figure and the corresponding data is a two-digit figure. To activate a change, the key "OK" must be pressed and the TV set must be switched off and on again.

Attention: The changing of unknown addresses can cause serious errors

Operating voltage :: 145VDC

Remote control :: RC 901

SCHNEIDER 30M901 -LCD TV _ ALIGNMENT PROCEDURE _ S/W LOADING PROCEDURE _ RESET DATA OF E2PROM AFTER LOADING

SOFTWARE LOADING
Instruments.

1. Computer (with monitor) 1pcs
2. Data cable (Picture 001) 1pcs
3. Special converter (Picture 002) 1pcs
4. Special loading board.

LOADING PROCEDURE

• Copy the updated software to the computer.
• Remove tuner from LCD set.
• Switch on LCD set, and set it in PC mode.
• Connect LCD TV and computer with the data cable, one end with a switch to tuner port of LCD TV set the other end to the converter, which connected to the printer port of the computer.

• Run the updated software (double click the software icon). After that, we get picture 008 on the screen of the monitor.

• Turn on the switch on the board of the data cable.
• Press any key on the computer keyboard, and then turn off the switch on the board of the data cable immediately.
• Software begins to be loading. During loading, we should pay attention to the loading schedule indicator on the screen. Until about 5 lines of indication dots on the screen, the loading is complete (different software may cause different indication dots). The content of the last page of the software will appear on the screen. Then check the 4 last lines content, they can’t all be FF. That is it.

LOADING PROCEDURE FOR DIGITAL BOARD

• Remove tuner; put the loading board on the tuner’s position, and Keep the switch SW2 on the loading board on.

• Switch LCD TV on and keep it in standby mode. The red LED on the loading board will flicker.
• Press SW3 on the loading board. The green LED will flicker. It means the software is being loaded.
• When the green LED stop flickering, it means loading is complete.
• Switch LCD TV set off. Remove loading board.

TO RESET DATA OF E2PROM AFTER LOADING.

• Set language to English.
• Press keys of "i ”, “6,4,0,5," to enter the Factory menu of Analog board.
• Select item of "e2prom ID reset" and press "-->" key to set the status of "off" to "on".
• Press "0" key to set the "e2prom reset" active until the status "on" turn to "off".

Quit the factory menu.

• Press "i" to enter "user menu" and select "Reset" item by "up/down keys"
• Press "-->" key two times to act the "reset" until a indicated "reset …ok"

Quit the analog user menu

• Press keys of "0, 6,4,0,5," and "1" to enter the "e2prom reset sub- Factory menu" of Digital board.
• Select item of "RST" and press "-->" key to act the "reset" on and an OSD of "waiting…" appears.
• Set will turn off automatically when finish of resetting.

ALIGNMENT PROCEDURE

WHITE BALANCE ADJUSTING IN VGA MODE

• Connect VGA signal, 1024x768 60hz, and white field, to LCD TV set.
• Set the values of brightness to 50%, and contrast to 70%.
• Using a color analyzer to test the color coordinates.
• Press 0,6,4,0,5 key in RC to enter factory mode, adjust the value of R, G and B to get x=284 15 and y=299 15.
• Press exit key to exit.

ADJUSTMENT OF WHITE BALANCE IN TV MODE

• Connect TV signal, PAL/BG system, and white field, to LCD TV set.
• Set the values of brightness to 50%, and contrast to 70%.
• Using a color analyzer to test the color coordinates.
• Press 0,6,4,0,5 key in RC to enter factory mode, adjust the value of R, G and B to get x=284 15 and y=299 15.
• Press exit key to exit.

ADJUSTMENT OF MID BRIGHTNESS

• Power on the set and connect a TV signal, 8 degrees gray signal, to the tuner.
• Set the value of brightness to 50%, contrast to 70%. (Actually, it is the condition after reset)
• Press “i” key of remote contr ol, then press 6, 4, 0, 5 to enter factory menu. Then change the value of mid.brightness to make the 2 darkest bars can be identified, and the 2 brightest bars can be identified too. It means we get a perfect picture on the screen.