LG RP-29FA40-M Service Manual

website:http://biz.LGservice.com

E-mail:http://www.LGEservice.com/techsup.html

COLOR TV

SERVICE MANUAL

CHASSIS : FA

MODEL : RP-29FA40-M

RP-29FA40-O

RP-29FA40-P

RP-29FA40-R

CAUTION

BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

OVERVIEW

CON2K6

SVM COIL

Interconnect Diagram

The FA chassis was developed for consumer market purpose. This manual covers 27v True Flat CRT only. The chassis is divided in two sections, the large signal board is containing the deflection, dynamic focus, power supply circuitry & shutdown circuit. A second board, located on the left side of the figure, is employed for processing the RF, audio, communication (main BUS), deflection, IF and video signals, this chassis does not require any other daughter board.

The Analog Flat chassis features a total of 9 IC’s on the small signal board, for RGB signal, video switching, (HV sync signal processing included). This chassis only supports the NTSC-U (USA) video format and this is made trough the IC2200, P221-01519, main video processor located on the middle of the small signal board, which is taking care of the IF, AGC, OSD switching, YUV processing, Automatic Contrast Level Control Systems, SVM support, Audio/ Video & Chorma demodulation, including Horizontal (East/West correction & X-ray protection) and Vertical deflection signals. The IF signal come from the WT1201, which is the main tuner.

A relationship between IC2200 and IC2990, P221-01438, is linked, this last one is used for switching the video signal inputs from the Front and Rear jacks. Also involved is the digital comb filter IC2400, 221-01449, which is used to separate the Y and C signals from any composite video (RF or Video In). The YUV input is processing directly through the IC2200.

The audio channels are applied to the audio processor IC1400, 221-01127. The IC1400 is also processing the TV- RF composite audio, this IC features function such audio demodulation, SAP (second audio program), and the audio processing for BASS, TREBLE and BALANCE adjustments, also includes the Surround and Soundrite features.

Once the audio is processed by IC1400, both channels are applied to the main stereo amplifier. The IC800, P2211488, is the final audio stage and its signal is applied to the speakers.

1-1 FA - GENERAL

OVERVIEW

ANTENNA

CABL E

MATRIX OUT

The IC6000 is the 8 bits & 80K microcontroller and the IC6001, 221-00745-05, is the EAROM memory. The IC6000 handles the communication thru IIC BUS, I/O ports, ADC converters for the keyboard, also supplies the OSD signals for the On screen menus and the Close Caption decoding.

The main board is using three main linear regulators for providing several voltage sources, the ICX3821 [5VSW] for Tuner and IC2200 , ICX3820 [5VSB] for the IC6000/ 1 and ICX3822 [9VSW] for most of the rest of IC’s. The VSW stand for SWITCHED VOLTAGE, these regulators contain an internal power switch to turn them on/off, from a Power Control signal provided by the IC6000.

Finally the main board has a provision for an additional IC, for switching the YUV inputs. The objective of this IC2902 is for adding an extra YUV input. This circuit will be available for a future model.

RPr Pb

S-VIDEO OUT

COMPONENT VIDEO I NPUT

VIDEO IN

S-VIDEO IN

R AUDIO IN L

On the large signal module there are five IC’s , the ICX3612 is the main power switching and PWM hybrid circuit and in conjunction with ICX3702 made the main power regulation of this chassis. The purpose of this regulator is to provide a proper protection for avoiding to shut the main power supply off and therefore the complete TV set. And of course, avoid the necessity of fuse replacement due to a short circuit on the third party TV card.

The ICX2100 is the Vertical output amplifier and is processing the small signal provided by the IC2200 on the small signal board. Also the IC3300 is processing the EAST/WEST correction for the screen geometry.

Finally The IC5100 is used to amplify the RGB small signals from the IC2200 and then display them on the CRT cathodes.

MODEL SCR CABINET F. JACKS R. JACKS EXTRA FEATURES

FA Chassis Model Information

ALL MODELS ARE MODULE LEVEL REPAIR

RP-29FA40-M 29 Table Top 4 13 TRUE FLAT, YUV INPUTS, AUTOVOLT RP-29FA40-P 29 Table Top 4 13 TRUE FLAT, YUV INPUTS, AUTOVOLT RP-29FA40-O 29 Table Top 4 13 TRUE FLAT, YUV INPUTS, AUTOVOLT RP-29FA40-R 29 Table Top 4 13 TRUE FLAT, YUV INPUTS, AUTOVOLT

FA - GENERAL 1-2

REMOTE MICRO OP GUIDE

124-00233-P09 P221-01524-00 P206-04552 124-00233-P09 P221-01524-00 P206-04552 124-00233-P09 P221-01524-00 P206-04552 124-00233-P09 P221-01524-00 P206-04552

MBR3447LG MODEL REMOTE CONTROL

FLASHBK (Flashback)

Returns to previous Channel.

Turns Channel Preview On/Off.

When on, the Channel Up/Down

keys only Scroll through channels

selected in the Add/Del/Blnk.

SURF

POWER

Turns TV On or Off.

MODE

Selects the remote's mode of operation

MUTE

Turns sound Off and On while picture remains.

CHANNEL (Up/Down)

Selects next channel in

TV’s memory. Press

and hold to repeat.

NUMBER PAD

Sele cts channels directly.

Displays menus for TV

and other options.

LEFT/RIGHT ARROWS

Chooses and shows the

desired menu option.

In commercial TV’s, doesn’t

have functionallity.

Displays the Sleep Timer menu.

Press repeatedly to set desired

TV shut-off time.

A, B, C Keys

TIMER

VOLUME (Left/Right)

Increases TV’s sound level.

ENTER

Shows Channel/Time, enters channel, or removes any on-screen menus.

QUIT/ (Three Functions Key)

It doesn’t function in commercial TV.

UP and DOWN ARROWS

Moves highlighted bar within menu to select an option.

Displays closed caption menu.

TV/VCR SOURCE

Steps through source options.

MBR3447LG

124-00233-P09

PROGRAMMING THE REMOTE

If you’re using Zenith products, the remote is already programmed for most common codes: TV= 101, VCR= 201, CABLE=353, and AUX=401. For other brands, or if your remote fails to control your Zenith products, you’ll have to program the remote.

After installing the batteries, follow these steps for each product:

1. Press and hold PRG using a blunt pointed object. Release PRG after the indicator light turns on.

2. Press the device button to be programmed (CATV, VCR, AUX, or TV).

3. Enter the 3-digit product code from chart on the next page.

4. Press and release ENTER to save the code.

5. Point the remote at product and press POWER to test the product’s operation. If it does not turn on, reprogram remote using a different code.

6. Write the code on the label inside the battery compartment for future reference.

1-3 FA - REMOTES

REMOTE PROGRAMMING

AUTO FIND

If none of the codes in the code table operate your equipment, use Auto Find to search for the proper code.

1. Turn on the product you want to operate.

2. Press and hold PRG using a blunt pointed object. Release PRG after the indicator ligth turns on.

3. Press any key to be programmed

4. Enter ”000”, then press ENTER within two seconds. Auto Find is active after the indicator light flashes and remains lit.

5. Point the remote at the product.

6. Press and release POWER repeatedly, about once a second, until your products turns off. The indicator light turns off when you press POWER and on when you release it.

7. Press ENTER immediately to save the code. The indicator light flashes to indicate the code has been saved.

8. Press POWER to turn On your product.

9. Test your product. If the remote fails to operate some of the basic functions, use Auto Find again to search for a better code. (Auto Find resumes its search after the last code that was entered and saved in step 7).

NOTE: If the indicator light stays on as you press POWER,

Auto Find has tried all of the codes. If the product you want to control has not turned off, your remote will not work with that product. To cancel Auto Find, press PRG at any time during Auto Find.

CABLE BOX

This remote can control the cable/converter box volume and muting (instead of the TV’s) is available on your equipment.

1. Program the cable/coverter box normally.

2. After programming the cable/converter box. Press and hold PRG again using a blunt pointed object. Release PRG after the indicator light turns on.

3. Press and release the device button the cable box is assigned to.

4.This time, enter the special code 3-9-9 instead of the product code.

5. Press and release ENTER to save.

(CAT, VCR, AUX, or TV).

VOLUME OVERRIDE

These remotes can override TV, VCR, or Video Disk Player volume functions with an amplifier’s volume and muting.

1. Program the amplifier normally.

2. After programming the amplifier, Press and hold PRG again using a blunt pointed object. Release PRG after the indicator light turns on.

3. Press and release the device button whose volume control is to be replaced by the amplifier volume control. For example, pressing TV will operate the amplifier’s volume while the remote is in TV mode.

4. This time, enter the special code 4-9-9 instead of the product code.

5. Press and release ENTER to save.

AUXILIARY CAPABILITY

This remote can control up to seven devices. If the remote has been programmed for four components using the TV, VCR, CABLE, and AUX keys, you may also program it for up to three additional using AUX+1, AUX+2 and AUX+3

To Program AUX+1, AUX+2 AND AUX+3

1. Locate three digit code for product in code table.

2. Press and hold PRG until indicator lights up

3. Press the AUX and 1 simultaneously to select AUX+1.

4. Enter the three-digit code and press ENTER. The indicator light should flash and then turn off to indicate the code has been accepted. If the light stays on, repeat steps 3 and 4 or try a different code.

5. Repeat steps 2-4 for AUX+2 and AUX+3.

6. Write the codes on the labels inside battery compartment for future reference. Hold down AUX and press 1,2 or 3 to access AUX+1, +2 or +3 mode.

UNIVERSAL ERASER 911

To restore the transmitter back to its initial default settings, enter the Programming Mode as usual (by holding PRG until the LED indicator lights), and press 9 1 1, followed by ENTER. The LED indicator will flash three times to indicate that the transmitter has returned to its initial default brand codes. Universal Erase will work in any mode.

FA - REMOTES 1-4

PROGRAMMING CODES

TV's Portland 246,727 SL Marx 326 Sears 936

Daewoo 149 ProScan 216,260,266, Sprucer 313 Sharp 441,442 Zenith 101,121,149 282,725 Stargate 326,379 Sherwood 449 152 Quasar 259,295 Standard Comp 335 Hitachi 950

TV/VCR

dventura TV/VCR 154 240,242,249, Tocom 317,318,346 Luxman 930 Daewoo TV/VCR 148 260,266,282, Unika 325,348,362 Magnavox 421,422,433, Funai TV/VCR 154 283,284,285, Universal 325,358,362 434 Goldstar TV/VCR 153,172 286,287,288, Vid Tech 340 Son Symphonic TV/VCR 154 708,710,711, Video Way 349 445,934 Zenith TV/VCR 150,153,154 725 Viewstar 327,354,355, Soundesign 461,498,901, 172 Realistic 212,213,265, 372 902

CR's Saisho 722 Zenith PM 374 Teac 418,419

dmiral 261 Salora 297 Technics 432 Akai 292,717,718, Sam sung 220,230

udio Dynamics 726 726 Chaparral 501,502 Zenith 460,461,498, Bell + Howell 247 Sanyo 212,247,294 Cheyenne 502 901,902 Broksonic 221,250,255, Scott 243,290,729 Dishnet 515

Candle 727 265,274 GE 510,517 Citizen 914 Canon 704 Sharp 261,730 General Instrume nts 504,505 GE 916 Capeheart 728 Signature 2000 216,219,249 Hitachi 519,520 Goldstar 460,474 Citizen 727 Sony 232,723,724 Hughes Network 514 Hitachi 919 Craig 212 Sylvania 275,297 JVC 518 JVC 908 Curtis Mathes 259,266,725, Tatung 268,292 Macom 314 Kenwood 484

Daewoo 244,246,248, Teknika 272 Philips 521 Marantz 903,913

Daytron 246 297 ProScan 510,517 Nad 904 DBX 726 Vector Research 726,727 RCA DSS 373 Nakamic hi 493 Electrohome 730 Vic tor 726 RCA 510,517 Onkyo 471,906 Emerson 203,221,243, Video Concepts 726,727 Realistic 506 Opti mus 905

Fisher 211,212,213, 229 Sony 511 Quasar 912

GE 216,220,266, STS3 508 Sharp 483,917,918

Go Video 256,262,263,

Goldstar 253 Century 325 Zenith 351,378,500 902 Harman Kardon 296 Citizen 325 Toshiba 915 Hitachi 257,270,273, Comtroni c 326

JC Penney 268,726 GE 367 Jensen 292 Gemini 305,331,338 JVC 224,225,258, General Instrument 304,305,306, ADO 939

Kenwood 268,292,726, Hamlin 302,303,345, Denon 935 Pioneer 963

Magnavox 275 Jasco 325 Emerson 952 Toshiba 961 Marantz 267,268,726, Jerrold 304,307,308, Fisher 438,933,951 Zenith 960

Memore MGA 297,730 Kale Vision 335 Hitachi 950 Mitsubishi 276,277,278, Macom 321 Kenwood 441, 931, 948

Montgomery W ard 216,219,249, 369,370 Marantz 929 ,947

Multitech 727 Panasonic 313,320 Mitsubishi 927 NEC 267,268,269, Philips 325,327,347, Nakamichi 925,926

Orion 250 Pioneer 315,343 Panasonic 431,432,945 Panasonic 245,251,259, RCA 341 Philips 421,433,434

Penta Philco 275 337,364 RCA 437,943 Pioneer 210,282,726 Sig nal 326 Sanyo 438,439

719,720 Sansui 289,292,709,

729 Sears 211,212,213, Drake 503

727 Teac 268 Magnavox 521 Luxman 467

254,703,729 Toshiba 213,274,290, PrimeStar 513 Memorex 485

250,293,721, XR - 1000 243 Sierra I 502 Panasonic 912 722,729,730, Yamaha 726 Sierra II 502 Pioneer 470,485,907 731,732 Zenith 201,224,225, Sierra III 502 Proton 910

247,265,274 STS1 507 RCA 909

282,701,702, 725

700

292,705,706, Everquest 379 Sony 452 Victor 908 707,708 Garrard 325 Zenith 460,461,498,

268,292,299, 307,308,309, 726 310,318

727 365,366 Dynatech 953 Son

727 309,310,318, GE 932 212,298 360,363 Goldstar 460

279,280,296, Magnavox 327,334 JVC 949, 954 297,730 NSC 335,339,368, Luxm an 930

291,730 Oak 311,332,342 MCS 928

281,292,709, 350,352,354, Onkyo 923,924,946 726 355 Optim us 920,921,922

713,714,715, Regency 329 Pioneer 431,435,944 716 Samsung 326,335 Quasar 432 708,727 Scientific Atlanta 316,323,336, Radio Shack 431,441

Radio Shack 213,265,730 Teleview 326 JVC 949,954 RCA 216,220,228, Texscan 339,356,371 Kenwood 441,931,948

420,443,444,

730 Zenith HT-2000 353 Sylvania 433

SATELLITE

lphastar 516 Zenith CD Recor415

Yamaha 414,941,942

TUNER/AMP

CATV

llegro 358,362 Uniden 522 Son llegro A-B Switch 361 United 344 491,492 rcher 325 Zenith Drake 312,328,330 Soundesign 461,498,901,

Toshiba 509,512 Sherwood 900

AUDIO - TAPE DECKS

Tec hnics 912

486,489,490,

COMPACT DISC 901,902

DC 940

DVD Players

iwa 938 JVC 965 kai 937 Mitsubishi 964

962

FA - REMOTES 1-5

USER MENUS P221-01524-00

CHANNEL MENU

Below is the Channel Menu for the FA chassis with each of its options.

EZ PROGRAM

The EZ Program feature automatically searches for all available channels and marks them as ‘Added’ so that they may be accessed via the channel Up/Down key.

CHANNEL

EZ Program Add/Del/Surf EZ Clock Captions Caption/T Language Source

MOVE NEXT EXIT

In the EZ Program option, the current RF input type (Off Air Antenna or Cable TV) is highlighted. Use the Up/ Down Arrow keys to change the RF input type.

To start the EZ Program, press the Right Arrow key. If the Cable TV input type is selected, the EZ Program routine will determine what type of cable system is present.

ext

ENTER

ADD/DEL/SURF

After running the Auto Program, all channels found by the Auto Program feature will be marked ‘Added’. However, some of these channels may be scrambled, or undesired by the customer. The Add/Del/Surf feature allows the customer to selectively mark any channel as ‘Deleted’ or ‘Added’. To change the status of a channel, press the Up/Down Arrow keys. To change the channel while adding or deleting channels, use the Channel Up/Down keys, or press the desired channel digits, followed by the ENTER key. If only one channel is present, to change the channel the customer must use the digit keypad to select a channel.

EZ CLOCK

When the EZ Clock item is selected, pressing the Right Arrow key allows entry into the clock set menu.

CLOCK

Clock Mo de

Time Set

MOVE MOVE NEXTNEXT BACKBACK

Manual

Auto

ENTERENTER

Notes:

• EZ Program clears all Surfing channels, which were added.

• While searching for channels, all keys except for the Power key are disabled. This prevents an incomplete EZ Program procedure.

• Running the Auto Program will clear the factory mode, if it was active. This happens at the end of the EZ Program.

• If the EZ Program line in the Setup Menu is ‘red’, this indicates that the module did not pass by Chassis. When ‘green’, this indicates that the module did not pass by Tracking. When ‘blue’, this indicates that the module did not pass by Programming. To clear this line to ‘white’, set the upper nibble of the EEPROM location $1FFh to $B0h.

• If no channels are found then the following message will appear: “Make sure that the cable/ant. is

connected, and try again.”

DAYLIGHT SAVINGS TIME

The customer also has the option of selecting the Daylight Savings Time to be On, Off or Auto using the Left/ Right Arrow keys.

CAPTIONS

This feature allows the customer to select: Off, On, or EZ when Muted options. To change the status of captions, press the Left/Right Arrow key to select either On, Off, or EZ Mute.

CAPTION/TEXT

This feature allows the customer to activate or desactivate Captions or Text. Pressing the Left/Right Arrow keys sequentially through each of the following Caption/Text options. Caption 1 Caption 2 Caption 3 Caption 4 Text 1 Text 2 Text 3 Text 4

1-6 FA - MENUS

USER MENUS P221-01524-00 (continued)

Notes:

• When the Text option is selected and a text box appears, if the CC key is pressed, the Caption box that allows setting to On, EZ Mute or Off will appear,

• When captions are being displayed, if one of the Volume Up/Down keys is pressed, the volume bar will not appear.

• When the Captions are not activated and the CC key is pressed, the Caption Box will appear, that allows choose On, EZ Mute or Off.

LANGUAGE

This feature allows the customer to change the menu language to English, Spanish or French by pressing the Up/Down Arrow keys.

SOURCE

This feature allows the customer to select: Antenna, Rear Video, Rear-SV, Front Video, or Comp. Video.

PICTURE MENU

All menu items are adjusted with the Left/Right Arrow keys.

COLOR TEMP

Sets the color temperature. The two settings are COOL and WARM.

EZ PICTURE

This feature allows the customer to maintain 8 separate Contrasts, Brightness, Color, Tint, Sharpness by setting “Custom, Normal, Movie, Digital, Video Game, Sports, Night Time, Weak Signal”.

SOUND MENU

All menu items are adjustment with the Left/Right Arrow keys.

SOUND

Bass Treble Balance Audio mode Front Surr EZ Soundrite EZ Sound

MOVE NEXT EXIT

ENTER

PICTURE

Contrast Brightness Color Tint Sharpness Color Temp EZ Picture

MOVE NEXT EXIT

ENTER

CONTRAST

Contrast adjustment has 101 steps (0 to 100).

BRIGHTNESS

The brightness value sent to the video processor is (RfBrt + Customer Brightness) if the source is the RF source, or (AuxBrt + Customer Brightness) if the source is the AUX source. RfBrt and AuxBrt appears in the factory menu.

COLOR

Color adjustment has 101 steps (0 to 100). The color value sent to the video processor is according to the next equation and look up table.

TINT

Tint Adjustment has 101 steps (0 to 100). A center mark indicates step 50. The tint value sent to the video processor is (custom Tint + TintOffset)*127

SHARPNESS

Sharpness adjustment has 101 steps (0 to 100).The sharpness value is sent to the video processor as (Custom Sharpness).

BASS

Bass adjustment has 101 steps (0 to 100).

TREBLE

Treble adjustment has 15 steps (0 to 14).

BALANCE

Balance adjustment has 29 steps (0 to 28).

AUDIO MODE

There are three audio modes available: Mono, Stereo, 2 Audio/SAP. If 2nd Audio/SAP is selected, but the current channel does not support SAP, then either Stereo or Mono will be heard.

FRONT SURR

Front Surround can be set ‘ON’ or ‘Off’, regardless of the current Audio Mode setting. However, the Front Surround effect can only be heard when the Audio Mode has been set to ‘Stereo’ and a Stereo signal is present. When this condition exists, there will be a short mute (200ms) while toggling the Surround ‘On’ to ‘Off’, to embellish Front Surround activation.

1-7 FA - MENUS

USER MENUS P221-01524-00 (continued)

EZ SOUNDRITE

The Sound Rite feature is used to obtain a uniform volume level, particularly while changing channels. The Sound Rite feature can be best demonstrated on a channel with no signal (snow).

EZ SOUND

The EZ Sound Control has six selections the customer can select. The selections available are: Custom, Normal, Stadium, News, Music and Theater. The Left/Right Arrow keys may be used to select any of the choices mentioned.

LOCK MENU

As show above, with the Lock Menu on-screen, use the Up/Down arrow to highlight an option Like Content Blk, then press ENTER. Use the Up/Down/Left/Right arrows to select and adjust or set the rating for an option. For Sex Scenes for example , use the “From TV-PG” setting. (See the Mini Glossary, Ratings Charts on this and the previous page for rating definitions).

LOCK

Aux Sources

MPAA Age Block Content Blk Cdn. Ratings Set Hours Set Password Lock On/Off

MOVE NEXT EXIT

AUX SOURCES

To Block or Unblock the sources, press the Up/Down Arrow keys. The SOURCE key may be used to view the other source.

MPAA

The MPAA selector allows the customer to select either to have the channel Unblocked, G and Above, PG and Above, PG-13 and Above, R and Above, NC-17 and Above, or X.

AGE BLOCK

Use the Right Arrow key to select the Age Block Menu. Once entered into the Age Block Menu, the customer has the option to block channels for general age or to block channels for children.

ENTER

GENERAL BLOCK

To block channels for a general age, the customer may either select: Unblocked, TV-G and Above, TV-PG and Above, TV-14 and Above or TV-MA.

AGE

General

Children

MOVE NEXT BACK

Unblocked TV-G TV-PG TV-14 TV-MA

ENTER

CHILDREN BLOCK

To block channels for children, select either: Unblocked, TV-Y and Above or TV-Y7.

CONTENT BLOCK

To block a television program according to its content, use the Right Arrow key to select the Content Block Menu.

CONTENT

Dialog

General

Language Violence Sex Scenes F Violence No Rating

MOVE NEXT BACK

Unblocked TV-PG TV-14

ENTER

DIALOG BLOCK

To block a television program with Dialog rating, use the Up/Down Arrow keys to select either: Unblocked, TV-PG and Above or TV-14.

LANGUAGE BLOCK

To block a television program with Language rating, use the Up/Down Arrow keys to select either: Unblocked, TV-PG and Above, TV-14 and Above, or TV-MA.

VIOLENCE BLOCK

To block a television program with Violence rating, use the Up/Down Arrow keys to select either: Unblocked, TV-PG and Above, TV-14 and Above, or TV-MA.

SEX SCENES BLOCK

To block a television program with Sex Scenes rating, use the Up/Down Arrow keys to select either: Unblocked, TV-PG and Above, TV-14 and Above, or TV-MA.

FA - MENUS 1-8

USER MENUS P221-01524-00 (continued)

F VIOLENCE BLOCK

To block a television program with F Violence rating, use the Up/Down Arrow keys to select either: Unblocked, TV-Y7.

NO RATING BLOCK

To block a television program with No Rating , use the Up/Down Arrow keys to select either: Unblocked and Blocked.

CANADIAN RATINGS

Use the Right Arrow key to select the Content Block, and use the Left/Right Arrow keys to select the Cnd. English or Cdn. French.

CDN. RATINGS

Cdn. English

General

Cd. French

MOVE NEXT BACK

Exempt Children 8+ General PG 14+ 18+

ENTER

SET HOURS

Use the Up/Down Arrow keys to adjust the number of hours the Parental Control feature will be active. The valid hour range is 1 through 99 hours.

SET PASSWORD

Press the Right Arrow key to allow Password entry.

TO ENTER PASSWORD

The software accepts four-digit codes only. The customer must enter a password

RE-ENTERING PARENTAL CONTROL MENU

If the Parental Control feature has been activated, the software will not allow immediately entry into the Parental Control Menu. Instead, it will prompt for the correct password. If the correct password is entered, the Parental Control menu will be unlocked so the user can change the configuration for parental options. If an incorrect password is entered, an error message (“Not Accepted!) appears, and will not disappear until 5 seconds. This extended time provision increases the amount of time necessary for a child to “crack” the password.

Notes:

• The Parental Control menu will remain up for 15 seconds after the last key press.

• The QUIT key may be pressed to remove the PC menu.

• Entry into the Factory Menu will immediately turn off the PC feature

• The PC Hours and Password will be cleared upon exit of the Parental Ctrl menu (unless the Parental Ctrl feature has been turned on.)

DISPLAY WHEN PARENTAL CONTROL IS ACTIVE

When the Parental Control has been activated the channel is blocked. The display on the screen shows two lines. The first line displays a message saying that the “PARENTAL LOCKOUT IS ACTIVE.” The second line displays the amount of time (in hours) left in the lockout.

REPEAT PASSWORD

After a four-digit code has been entered, the software requires the customer to re-enter the same four-digit code.

PASSWORD NOT ACCEPTED!

If an invalid code is entered, or the two codes entered do not match, a blinking error message (“Not Accepted!”) will appear. This error message also appears when no code is entered for the password or if only one digit is entered and no other digit has been entered.

LOCK ON/OFF

This item turns the Parental feature On or Off. The Parental Ctrl. feature can only be turned on if the hours > 0, and a password has been set. Otherwise the Lock On/ Off line will display either of the following error messages: “Must Set Hours” or “Must Set Password.”

1-9 FA - MENUS

USER MENUS P221-01524-00 (continued)

YTLC

LTMC

XMMT

SPECIAL MENU

This Menu contains the EZ Timer , Ch. Labels, XDS Display, EZ Demo and EZ Help.

SPECIAL

EZ Timer

CH. Labels XDS Display EZ Demo EZ Help

MOVE NEXT EXIT

EZ TIMER

The Timer Menu contains the Sleep Timer and the On/Off Timer features.

SLEEP TIMER

Sleep Timer (via Timer Menu) The Left/Right Arrows can be used to adjust the current sleep timer setting: Off, 0:10, 0:20, 0:30, 1:00, 1:30, 2:00, 3:00 or 4:00

SPECIAL

EZ Timer

CH. Labels XDS Display EZ Demo EZ Help

MOVE NEXT BACK

ENTER

PRESS

TO SET

CHANNEL LABELS OPTION

This feature allows the customer to select a channel label for the current station. This channel label is displayed in the Channel/Time display. Initially, all channel labels are set to ‘——‘, which results in no channel being displayed in the Channel/Time display.

CHANNEL LABELS

A&E CMTV ESPN HSE NOS TBN VC AB ACTS CNN E AD AMC CSPN FAM JCN QV

CNCB ESP2 HSN PBS TELE VCR

IC PLA

COM EWTN INSP PT

VH-1 VISN

TNN VJN BCC CSP2 FNN LIFE RDS TNT WB BET CTN FO BRAV CTV F&V ME/U S CA DIS F CBC DIS

GALA MTV SHOW TWC YTV CBN E! HBO NB CBS EN

HN NICK TBS USA

MAX REQ TRAV WGN

TSN WTBS

SCFI TVA WWOR

SIN UPN ----

None

To change the current channel label, press the Up/Down Arrow key. To change the channel while adjusting channel labels, use the Channel Up/Down keys, or press the desired channel digits, followed by ‘Enter’. (If Channel Up/Down is pressed, the next or previous channel which was marked ‘Added’ will appear.)

ON/OFF TIMER

This feature consists of three menu lines: “On Time”, “Off Time”, and “On/Off Timer”. This feature allows the set to turn on and off at the times specified in “On Time” and “Off Time”. The “On Time” and “Off Time” are set identical to the Clock Set feature in the Channel Menu. An Off Time must be specified, before turning on the “EZ Timer”—otherwise an error message (“Must Set On/Off”) will be displayed on the On/Off Timer line. The On/ Off Timer option turns the Timer On or Off. If there is no Off Time set, then the On/Off Timer displays the above message saying: “Must Set Off Timer.” Once the Off timer has been set, the customer can then set the option to either On or Off.

FA - MENUS 1-10

Note:

• When in the channel label is selected ————, then the Auto channel label is activated, in other words, the program automatically take the channel label of the signal that is send by broadcasting through the XDS service.

• If the label None is selected, the Auto channel label is disactivated.

XDS DISPLAY

Pressing the Left/Right Arrow Keys allows the customer to select the XDS Display either On or Off.

USER MENUS P221-01524-00 (continued)

EZ DEMO

The EZ Demo is designed to show-off the icon menus and other icon displays on the sales floor. The EZ Demo feature can be turned On/Off with the Up/Down Arrow keys. Initially, when the feature is activated, as soon as the OSD times out, the EZ Demo will start. At this point, pressing any key will temporarily disable the EZ Demo for 18 seconds, and if the EZ Demo is working and the Menu key is pressed then the Special Menu will be displayed and the EZ Demo feature will be selected allowing the customer to disable it.

Note:

• The Auto Demo On/Off setting is not stored to the EEPROM.

EZ HELP

The special features EZ Help option may be accessed using the Right Arrow key. The EZ Help feature provides help on certain options and also provides support for the EZ Programm, Add/Surf/Del, Degaussing, EZ Picture and EZ SoundRite features. There is a simple explanation of each options.

The EZ Help has a main screen called EZ Help. This screen gives a solution to the most common problems that a customer may encounter; i.e., To program channels.

MISC DISPLAYS

SLEEP TIMER

To press the timer key for activate the sleep timer. The user can choose to activate the timer to turn off the Television in 10, 20 or 30 minutes or 1, 1:30, 2,3 or 4 hours just by clicking on the sleep timer clock.

VOLUME DISPLAY

When the Volume key is pressed, the following display appears on the screen.

CLOSED CAPTIONS

If the CC key is pressed the following displays appears. The customer may change the settings of the Closed Captions to Off, On or EZMute

CHANNEL/TIME/AUDIO DISPLAY

Pressing the ENTER Key allows the customer to display the channel, time audio mode as well as information of the current program along with the rating of the program.

OFF

1-11 FA - MENUS

FACTORY MENU

INSTALLERS MENU

Access the Installer’s Menu by using the remote control or the keyboard on the front of the set.

With the remote: Press & Hold MENU key until the Channel/Time display appears, then press 9, 8, 7, 6, and ENTER.

With 6 button keyboard: Press and hold MENU until the Channel/Time display appears. Simultaneously press the VOLUME UP and CHANNEL DOWN keys.

Notes:

• When the factory mode is set to “1”, then

press ‘9’, ‘8’, ‘7’, and ‘6’, followed by ‘ENTER’ to access the Installer’s Menu.

• To acces the G2 re-adjustment mode, press 2 hold

the Menu key until the Channel/Time display appears, then press ‘9’, ‘8’, ‘7’, ‘6’, and quit key.

00 Fact Menu: Use the Select key to select item #00,

which is the first item in the Installer’s Menu. The Factory Mode item should always be left off (Zero is off). When left in this mode, only items from 0 to 27 are visible. When the factory mode is set to 1, all menu (Audio or Video settings) items will be available. Also they will appear on the screen one at a time at the top left of the screen.

When The Factory Mode is on, the Factory Menu line appears at the middle of the screen to allow for proper setting of the video.

When the Factory Mode is turned off, all TV functions are returned to normal. The simbols at the top of the channel menu icons is removed indicating that the Factory Mode is off. There are 4 ways to turn off the Factory Mode:

1. Change Installer’s Menu Item “00 F Mode” to 0.

2. Run Auto Program.

3. Use the Clock Set feature to set the time.

4. Use Factory off IR code.

Notes:

• Video Preference Settings Inhibited: In the Video

Menu, the Custom Video Preference settings are inhibited while the Factory Mode is on and will NOT be stored in EEPROM. (This allows the factory to temporarily change the settings and not store them permanently.)

01 Preset Px: Used to store the customer menu adjust-

ments in the nonvolatile memory of the EAROM. Settings for Contrast, Brightness, Color and Tint are stored in this manner. 0 is Custom and 1 is Preset.

02 Preset Ax: Saves your custom audio settings

(Bass,treble,balance,audio mode,sound rite,front surr,speaker) in nonvolatile memory (not affected by power loss). Memory status is indicated by a 1 for “custom settings already stored”, or 0 for “custom settings have not been stored.”

03 Vert Pos: Sets On Scree Display vertical position. Use

the ADJUST keys.

04 Horz Pos: Sets On Screen Display horizontal position.

Use the ADJUST keys.

05 Band/Afc: There are 8 possible settings for this op-

tion.

06 Ac on: Allows the TV to turn ON just by applying AC

power. Pressing the ON button is not necessary. This is desirable when the TV is plugged into a cable box or a power outlet controlled by a wall switch. Use adjust to select 0 or 1, where 0 is OFF and 1 is ON.

Note: When set to 1 (ON), the TV does not respond to

ON/OFF commands from either the remote or the control panel, and the SLEEP TIMER is also nonfunctional.

07 Feature Level: Set to 1 to see Zenith Code, when set

to 0 Private Codes are shown.

08 Trap: Turn On 3.58 MHz internal trap in Video Proces-

sor.

09 RF Band Pass Activates the Band Pass Filter for RF

(Antenna) input

10 RF BRT Set Black Level for RF input (Antenna)

11 Aux BRT Set Black Level for Auxiliar input (Video:

Composite & Y/C)

12Yuv BRT Set Black Level for YUV input (Component

Video)

13Max Bright Set maximum internal Brightness Register

14Max Contrast Set maximum internal Contrast Register

15 Vert Size: Vertical amplitude adjustment Variable in

factory menu. Range: 0-127, Initial value: 63.

16 Horz Size: Horizontal amplitude adjustment Variable

in factory menu. Range: 0-63, Initial value: 31.

17 Vert Phase: Adjust the Vertical Phase, screen up -

down. Range 0-5. Initial value: 0

18 Horz Phase: Adjust the Horizontal Phase, screen left-

right. Range: 0-31. Initial value: 32

19 Audio Level: Adjust the composite audio level aoutput

of the video processor.

20 RF AGC: Adjust the AGC delay for maximum gain with

a reference level of 0 dBmV.

2-1 FA - INSTALLERS MENU

FACTORY MENU (continued)

21 Horz AFC: Set the automatic horizontal frecuency con-

trol on, should be 1.

22 WPL: Activates White Peak Limiter

23 Tint Offset: Set the Tint offset

24Red Cut: Set the Red Cutoff of Low Luminance White

Balance adjustment

25Green Cut: Set the Green Cutoff of Low Luminance

White Balance adjustment

26Blue Cut: Set the Blue Cutoff of Low Luminance White

Balance adjustment

27Green Gain: Set the Green Gain of High Luminance

White Balance adjustment

28Blue Gain: Set the Blue Gain of High Luminance White

Balance adjustment

29Air AFT: Set the AFT when watching air signal.

30 A ATT: Adjust the composite input level to the audio

decoder to have the standard input level.

31 A VCO: Adjust Stereo VCO and SAP VCO free running

frequency.

32 A Filter: Adjust the filter for Stereo, SAP and DBX.

45 H EHT Comp: Horizontal Extremely High Tension

Compesation. Range 0-7. Initial value: 4

46 V EHT Comp: Vertical Extremely High Tension

Compesation. Range 0-7. Initial value: 6

47DC Rest Set the DC Restoration level

48BLK Stretch Set the Black Stretch start point

49ABL Gain Set the Automatic Black Level Gain

50SVM GAIN Adjust the Scan Velocity Modulator gain

51SVM PH Adjust the Scan Velocity Modulator Phase

52ACB SW Activates Automatic Control Beam

53SHARP PF Sharpness peak frequency selection: 0 to

3.2 MHz and 1 to 4.0 MHz

54CORING Activates the enhancement of Sharpness from

1 to 2 MHz

55B-Y ATT Set the attenuation level of Cb of YUV signal

56R-Y ATT Set the attenuation level of Cr of YUV signal

57AUTO FLESH Activates the Flesh tone control

58 ABL START POINT Set the Automatic Black Level Start

Point

33 A Spectral: Adjust high frequency stereo separation

(3KHz.)

34 Wide Band: Adjust low frequency stereo separation

(300Hz.)

35 Max Blk. Hrs: Adjust the maximun number of hours

the TV can remain Blocked (even 99 hours)

36RGB Contrast: Set OSD Contrast level

37SUB Contrast: Set internal Sub-Contrast Register

38 EW Correct: East- West Correction. Range 0-63, Ini-

tial value:26

39 EW Top-Corr East-West Corner Correction (top). Range

0-31, Initial value: 14

40 EW Bott-Corr: East-West Corner Correction (bottom).

Range 0-31, Initial value: 23

41 EW Trap-Corr: East-West Trapezium Correction.Range

0-63. Initial value 30. Range 0-31, Initial value: 23

42 V Centering: Vertical Centering. Range 0-63. Initial

value: 30

43 V Linearity: Vertical Linearity. Range 0-15. Initial

value: 12

59Y GAMMA Set the non-linear Gamma curve for Lumi-

nance signal

60ACB PULSE P Set Automatic Control Beam Start Point

61SCREEN Not used

62AKB SETUP Mute the RGB Cathodes

63AUX BAND PASS Activates the Band Pass Filter for

Auxiliar (Composite, Y/C, YUV) input

64CD MATRIX Set the relative phase and amplitude of

Color response to demodulate de Chroma

65YCbCr Select the Demodulation System for Component

Video YUV or YCbCr

66C GAMMA Switch the Color Gamma

44 V S-Corr: Vertical S-Correction. Range 0-15. Initial

value: 11

FA - INSTALLERS MENU 2-2

SERVICING

LARGE SIGNAL

POWER SUPPLY

The FA is a COLD chassis of a single sided circuit board, developed for a 27”. The power supply section features four IC’s for voltages sources. The FA chassis has the capability to meet the Energy Star requirement for a low power consumption on stand-by mode.

·9Volts, 1Amp ON/OFF Switch Regulator, 221-01460-07

·5Volts, 1Amp ON/OFF Switch Regulator, 221-01460-03

·5Volts, 0.150 Amp Switch Linear Regulator,

0IKE780500P

·Main regulator for Horizontal Deflection (B+), +15V,

Switch mode regulator 223-00061-01.

·Error amplifier 221-00265-03A.

+33VSW

+15VSB@100mA

HORIZONTAL

DRIVE

+5VSW@ 100m

+33VSW@ 15m

TUNER

SWITCH MODE REGULATOR

The FA chassis employs a switching power supply, quasiresonant topology type. The AC line is supplied thru the bridge rectifier BRX3400 and CX3410 circuit through the fuse FX3400 (5A @ 250 V fast blow), The AC operation range is between 90 Vrms to 135 Vrms (see TABLE

1.1) and a filter, consisting of LX3400, LX3401, CX3401, CX3403 and CX3408, which is employed before the rectifier circuit to reduce noise from the AC line and vice versa (EMI). The voltage output of the rectifier, VDC, is supplied to the Switch Mode Regulator Power Supply, and its output should be in this range [127 VDC to 352.5 VDC]. The SMPS consisting of ICX3612, ICX3701, ICX3702 and the chopper transformer TX3600. Through 100 KOHM resistor (Rst), RX3601 and CX3604 (Cst), which is derived the VCC from CX3410. These feed the pin 3 into the internal zener diode located within ICX3612.

-14VSW

205VSW

+35VSW

+12~14 VSW

6.3Vrms

6.3Vrms@315m

+130V@900mA

SWEEP

TRANSFORME

AC LINE

LINE

FILTER

RECTIFER SECTION

MPI

SWITCHING

HYBRID IC

+5VSB@ 2mA

+12VSB@600mA

PROTECTION

+5VSB

OPTO

DEVICE

MICROPROCESSO

LSP

+21VL

+VAUD

+16VSB

+12VUP

SHUNT

REGULATOR

+5VSBF@27mA

+9VSW@ 120m

B+

+9VSW

+5VSW

+5VSBF

PWR CTRL

POWER SUPPLY BLOCK SCHEMATIC

ABL

+5VSW@ 70m

+VAUD@1400m A

PROCESS OR

ST AUDIO

IDEO

+5VSW@ 80m

COMB FILTER

+9VSW@ 50m

+9VSW@ 55m

+9VSW@ 5mA

+9VSW@ 70m

STEREO SWITCH & VOL-

-14VSW@

ERTICAL

DEFLECTION

SWITCH ER

CXA2089S

FILAMENT

+14VSW@

3-1 FA - SERVICING

SERVICING (continued)

PIN DESCRIPTION

PIN # DESCRIPTION FUNCTION

1 POWER MOSFET DRAIN To drive the chopper xfmr,capable of switching a max of 650V. 2GROUND 3DRIVE 4 FEEDBACK 5SYNCHRONY

(HOT)

(+VCC)

(Vfb

(Vs/s

MOSFET Source connection.

Positive supply voltage, 32VDC The output voltage error is applied to this pin. External sync signal & Soft star capacitor.

At the same time this voltage is also applied to an internal comparator. So the voltage of this power source must be within a set range, between a 5VDC reference (Vref)

and a 32VDC zener diode (Vz).

This set range is verified through the UVLO (Under Voltage Lock Out) circuit of the Switch Power IC.

START UP

When the VCC reaches a upper threshold voltage (15 VDC) the comparator switches to enable the ICX3612

including all internal bias circuits, control circuits, PWM modulator & Power MOSFET. Due the demand of energy from Cst and Rst the VCC voltage starts to fall. Before to fall too low, a bootstrap winding on the power transformer (pins 13 & 16) reforces adequately the VCC power to keep the full system operation.

VOLTAGE SOURCES

There are Five secondary windings on the TX3600 and each has its own half wave rectifier. Consequently there are Five stand-by DC voltages: B+,

24VAUD, 21VL, 16VSB & 12VUP.

The first is used to source the horizontal sweep circuit, HOT (Horizontal Output Transistor). The second is used for audio. The third is exclusively for the LSP source, which is always on stand-by. The four is used for video low signal processing and The fifth is used for microcontroller.

The main microprocessor IC6000 and the EAROM memory IC6001 are supplied by a five volts stand-by source, +5V SB, which is derived through ICX3820 (0IKE78500P).

The +16 VSB and +12 VUP volts stand-by are protected by fuses FX3613 and FX3614 ( 4A @ 125V) Very Fast Acting, the +21VL and +24 VAUD volts stand-by are protected by fuses FX3611 and FX3612 ( 4A @ 125V) Slow Blow. B+ as mentioned before are protected by the OCP circuit. So they do not need fuse.

The FA chassis can be turn it on with the keyboard on the front of the set or with the remote hand control. The microcontroller IC6000 receive a signal and it output a high, about 4.8V, on pin 32 which is called PWRCTL. This pin is connected to RX3832, RX3831 and RX3540; producing the +VAUD, +9VSW, +5VSW.

DEGAUSSING

The FA chassis employs a new method of degaussing, which is performed through software. The IC6000 generate a pulse of about 1 second, time fixed, on pin 43. This pin is set to high, about 4.8 VDC, through R3900,

4.7K 5% ¼watt. And it applies to Q3900, which drives the 12 VCD relay KX3900. So the degaussing is performed when the degauss coil is plugged to CN3T8 connector.

POWER SUPPLY ALIGNMENT PROCEDURES

ELECTRICAL ADJUSTMENT

The FA chassis SMPS does not need any manual measurement. All the output voltages are regulated through ICX3702 (221-265-03A), error amplifier. The ICX3702 keeps the regulation using a reference voltage, through a voltage divider. The voltage divider is formed by two precision RX3706 and RX3704. The values of these resistors depends of the B+ output voltage.

NOTES:

·When servicing make sure to use a 120 VAC- 60Hz 25 Amp isolated source.

·Use a full white field on the video pattern generator.

FA - SERVICING 3-2

SERVICING

DEFLECTION

HORIZONTAL

PINCUSHION CORRECTION CIRCUIT

This circuitry provides a east/west pincushion correction by providing a smaller horizontal deflection current at the upper and lower portions of the flat screen, thru the dual OP-AMP IC3300 . In addition, the overall horizontal width is adjusted using this circuit.

SHUTDOWN CIRCUIT

This shuthdown circuit operates by means of a sample of HV taken from pin 3 of the sweep transformer TX3200. This sample of voltage is rectified, filtered and then compared with a reference voltage (fixed by ZDX3002) by the transistor QX3001. When the HV reaches the maximum permitted voltage, the transistor QX3001 enters in conduction mode; like consequence the transistor QX3002 also enters in conduction too, switching a DC voltage on pin 32 of IC2200. When IC2200 receives this DC voltage, the X-ray protection is activated and the TV set is shutting off.

VERTICAL

The FA chassis uses a 221-01410 on ICX2100, which contains; On-chip Thermal Protection, Pump-Up Stage and Power Amplifier. The vertical drives comes from pins 13 & 14 from the video processor IC2200, which are a negative and positive vertical Ramps. The Output to the yoke is on PIN 2 of ICX2100 . Dual power supply is needed for this IC (+/- 14Vdc), Applied on pins 6 & 1 respectively.

SMALL SIGNAL

AUDIO & VIDEO PROCESSING

The FA chassis has a stereo amplifier, IC800 P221-1488, which is the final audio stage. This chassis does not have phone output, however it has Matrix Output. The Matrix output is used to connect a center speaker, in serial with the two stereo speakers. This feature is used to connect an additional 8 Ohm 10W speaker. The stereo amplifier provides an power output of 10W x

2. The IC1400, 221-01127 is the audio processor and provides the Bass, Treble, Balance, front surround and soundrite features, this IC is controlled thru the IIC bus.

1510

AUDIO

AMPLIF

SVout

SVin

IC800

TDA7263

REAR

JACK -

Matrix-

Pb R

VRL

SVin R

FRONT

JACK-

Output

Output R

Comp. Audio In

AUX2-R

AUX2-

CXA2054S

IC1400

I C

IC6000

AUX1-

R OUTPUT

IC2900

CXA2089S

RV4

A/V

SWITC

RV3

RV2

Hard

RV1

I C

R INPUT

VIDEO PROCESSING

The IC2200, P221-01519 or TB1253AN/N is a TV Signal Processor IC, which contains PIF,SIF, Video, Chroma and deflection signal processors for NTSC systems. Also, it has V and EW geometric correction Outputs.

Features

IF Stage.

Inter-carrier input.

Digital AFT

Tank coil less PIF VCO Adjustment Free Video Stage

Built-in AV Switch

Video monitor Output for CCD MCU Built in chroma trap Black stretcher, DL Aperture Control Scan Velocity Modulation output.

3-3 FA - SERVICING

+ 38 hidden pages