This Manual was prepared for use only by properly trained audio-visual service technicians. When servicing this product, under no circumstances should the original design be modified or altered without permission from LG Electronics Corporation. All components should be replaced only with types identical to those in the original circuit and their physical location, wiring and lead dress must conform to original layout upon completion of repairs.
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If replacement of any of these components ·After discharging the CRT, connect a high impedance-high volt- are deemed necessary, it is important to use original type LG age meter to the CRT anode Electronics components. After replacement is made, confirm ·Remove jumper wire from RX3750.
OVERVIEW INTRODUCTION This manual covers the FC Narrow Chassis Comercial Sets. This chassis has stereo, surround, MPI, and component video ports. IC100 - IF, micro, audio, video, sync and sweep drive processing. And it is tied directly to the keyboard and the infrared detector.
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These cards SUPERPORT - MPI might contain one of the above features. LG Commercial Product receivers are now being adapted CONNECTION CENTER ON BACK OF TV to interact with other equipment. Prime examples of...
OVERVIEW (continued) CONNECTION CENTER ON BACK OF TV 4. COMPONENT INPUT The connection center on the rear of the TV allows for These jacks are for input connections to YPrPb (or YCrCb) Video equipment. connection of the viewing source. The diagrams list the use of each jack on the connection center.
REMOTE CONTROL FLASHBK (FLASHBACK) Returns to the last channel viewed. POWER POWER MUTE Turns TV On or Off Turns sound Off and On, while the picture remains. CC (CLOSED CAPTIONING) Press to access closed options. Press ENTER to exit.. CHANNEL (UP/DOWN) Scroll through available channels, VOLUME DOWN/UP and the Video Channel (Audio/Video...
LT2000 & LT2002 CLONE PROGRAMMER Note: A slowly flashing green light indicates there is a problem with communications between TV and programmer. In this case, check for damaged cable, poor contacts, or other connection Status Indicator problems. If the status indicator is red, the programmer batteries are low.
LT2000 & 2002 CLONE PROGRAMMER Using the on-screen menu, select a memory or return to DISPLAY CLONE SETUP the main selection menu. Then press ON/OFF, POWER, or Select “DISPLAY CLONE SETUP”, and then press ON/OFF, ENTER to activate the selection. POWER or ENTER to begin the teaching process.
USER MENUS SETUP MENU Select any other channels to be changed, and when fin- ished, press ENTER to close the menu. Press the Menu key on the Installer’s remote repeatedly so that the SETUP MENU appears on the screen CH LABELS (CHANNEL LABELS) Press the MENU key on the remote so that the SETUP SETUP MENU MENU reappears.
USER MENUS CLOCK SET Note: The clock must be set before for the Timers to function. Press MENU repeatedly to show the Setup menu. Use the The Off Timer can be used to turn the TV Off at the Up/Down Arrows to highlight Clock Set. present time.
USER MENUS DEGAUSS • BASS: Adjusts the amount of Bass (Low frequency level in the sound. It has 15 steps (0 to 14). On the optional installer’s remote, press MENU repeat- edly until the Setup Menu appears. • TREBLE: Adjusts the amount of Treble (High frequency Press SELECT to highlight the Degauss Option on your level) in the sound.
USER MENUS OVERVIEW To ensure complete for all TV programs (movies and regu- VIDEO MENU lar TV shows), choose ratings from the Motion Picture Association of America (MPAA) Rating System chart and the TV Parental Guidelines Rating System chart (both shown in next page).
USER MENUS • To reset the password, use the installer’s remote control to deactivate the V-Chip in the Installer’s menu (#21). Exit out of the Installer’s Menu after deactivating the Parental Control. Then enter back in and reactive the V-Chip. With the PARENTAL CONTROL menu on-screen, use the CAPTION 1 IS ON Up Arrow to choose an option, such as CONTENT BLOCK.
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Not for children under age 17 under any circumstances. Strong sexual content. Hard Core Films Same as NC-17 rating. Note: LG Electronics Corporation is not liable for any program content that appears when using this rating system; as always, user discretion is advised. TV PARENTAL GUIDELINE RATING SYSTEM General Audiences Content not offensive to most viewers.
INSTALLERS MENU INSTALLER’S MENU ADJUSTMENTS NOTE: When set to 1 (ON), the TV does not respond to ON/OFF commands from either the remote or the control Installer’s menu items can be accessed by using the panel, and the SLEEP TIMER is also nonfunctional. optional LP702 installer’s remote control.
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INSTALLERS MENU 7-I. START VOLUME Scan mode Characteristics This function allows the Installer to determine the initial Channel Up/Down keys volume level setting when the TV is turned ON. This Change channels only. feature is useful for an in-house information channel, Channel down below the since the TV would always select that Volume level when lowest channel (or channel...
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INSTALLERS MENU 23-I. CAPTION LOCK 35-I. SUP. PORT YUV Set to 1 to restore previous Caption On/Off state after Reserved for future use TV turns off. When set to 0, Captions are always off, when TV is initially turned on. 36-I.
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INSTALLERS MENU 49-I. DIS. AUDIO M. 1 = Red 4 = Blue 7 = White Set to 1 to disable the Audio menu. Audio menu will 2 = Green 5 = Violet not appear. Set to 0 to enable the Audio menu. 60-I.
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INSTALLERS MENU 6Time display. 80-I. UPN MSB-2 User programmable number, most significant byte-2 readable by M.P.I. command. 70-I. FOR. CH-T COL (Channel-Time Display Foreground Color) 0 = Black 3 = Yellow 6 = Cyan 81-I. UPN LSB 1 = Red 4 = Blue 7 = White User programmable number, least significant byte...
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INSTALLERS MENU 94-I. NOT USED 90-I. KEY LOCK When set to 1, frontal keyboard functionality is disabled. 95-I. AUDIO MD DISP When set to 1, Audio Mode Information is enabled to 91-I. NOT USED appear in the Channel Time Display. 92-I.
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INSTALLERS MENU Value Default Function Menu Item Range Value Brief Description of Function and Comments 40-I. AUTO CAMPORT 0 / 1 Set to 1 to automatically switch to Camport. 41-I. NOT USED 42-I. AUTO FRNT Y/C 0 / 1 Set to 1 to automatically switch to front S-Video input. 43-I.
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INSTALLERS MENU Default Function Menu Item Value Range Value Brief Description of Function and Comments 81-I. UPN LSB 0 - 255 User programmable number, least significant byte. (SN-LOW) 82-I. CHKSM ERROR 0 / 1 Enforces rigid M.P.I.* checksum Relaxes M.P.I. timing to be compatible with PC based Windows controlled 83-I.
FACTORY MENU 13-F CRNL6 (Lower Corner(6 DEFLECTION 1 More detail adjusts until symmetries lower corner of the screen. 0-F VL (Vertical Linearity) Adjust so that the boundary line between upper and DEFLECTION 2 lower half is in accord with geometric horizontal center of the CPT.
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FACTORY MENU 42-F AGCADJ1 27-F TINT RF Manual AGC Adjust for ADC1. Range : 0 to 63. Internal Tint Control for RF input source. Range : -128 to 127. 43-F AGCADJ2 Manual AGC Adjust for ADC2. Range : 0 to 63. 28-F SCADJ Chroma Sub-Carrier adjust register.
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FACTORY MENU 74-F RF BLACK 58-F VSATADJ Brightness register to set the initial condition for Pr Chroma component saturation adjust. Range : 0 to Brightness final alignment. 75-F RF WHITE 59-F LPFOP Contrast register to set the initial condition for Lines per Field Output.Only used for Freerun Mode.
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INSTALLERS MENU 88-F ULBLK DIS 103-F HBSO Register to toggle between Black or ultrablack during Horizontal Blanking Stop. Range : 0 to 1295 Blanking. Range : 0,1. 104-F VBST 89-F PRED CH Vertical Blanking Start Line. Range : -127 to 343. Register to Choose the default channel during Predominant Color Adjustment.
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INSTALLERS MENU VIDEO-FI 8 115-F YCDEL YC Luminance Delay for Luminance/Chrominance Video input source. Range : -8 to 7. 129-F PKCF YC Peaking Filter Center Frequency for Luminance/ 116-F FIX G2 chrominance Video input source. Range : 0,1,2,3 Register to set the default value of Brigh(Luma Offset) register during G2 adjustment.
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INSTALLERS MENU Value ITEM Register Name Description (dec) Deflection 1 Vertical Linearity -280 Vertical Amplitude S-Correction Vertical Position Horizontal Position Horizontal Width Trapezoidal Pin Cushion CRNU Upper Corner CRNL Lower Corner ANGLE Angle CRNU6 Upper Corner(6 CRNL6 Lower Corner(6 EHTTH EHT Compensation Threshold Deflection 2 EHT S...
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INSTALLERS MENU Value ITEM Register Name Description (dec) RC YPBPR Red cutoff offset for YPbPr input Blue cutoff offset for YPbPr input BC YPBPR Green cutoff offset for YPbPr input GC YPBPR Video-FI 3 YPBPROFS Internal Brightness offset for YPbPr input YFDEL Luma/Fast blanking delay for YPbPr input UVDEL...
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INSTALLERS MENU Value ITEM Register Name Description (dec) NOOSDBCL BCL function for analog RGB. Register to enable or disable the BCL function for OSD HBST 1207 Horizontal Blanking Start. HBSO Horizontal Blanking Stop VBST Vertical Blanking Start Line. VBSO Vertical Blanking Stop Line OSD CNTR Analog Contrast for OSD and external RGB OSD BRT...
GENERAL INFORMATION +14VSW at CX3660 +11VSW at ZDX3865 Servicing the FC Narrow is the same as with other LG +9VSW at CX3865 single-board chassis. If the set is dead, first check the standby and switched voltages. If the switched volt- +8VSW at ZDX3870 ages do not appear, check the power “On”...
ICX3751 thresholds. If replacement of any of these compo- nents are deemed necessary, it is important to use original type LG Electronics components. After re- HV SHUTDOWN PROCEDURE. placement is made, confirm proper anode voltage ·After discharging the CRT, connect a high impedance- using the following procedure.
(U100) which is a band pass filter with sharp out band attenuation required to pre- a) With the LG remote control (P/N: 105-201M) to make vent adjacent channel disturbances going into the IF the next steps: amplifiers in the one chip IC.
Factory Menu. IF VIDEO is switched internally on IC100. 2. With Zenith Remote (P/N MBR3447CT) or LG Remote (P/N MBR3447LG). Hold Menu button for just a sec Rear Y enters at pin 35 and C enter at pin 34 onds until channel will be displayed.
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SERVICING PURITY & CONVERGENCE SETUP PROCEDURE CONVERGENCE ADJUSTMENT PRELIMINARY SETUP 1. Release locking assembly. 1. Allow the receiver to warm up for 15 to 20 minutes. 2. Connect crosshatch generator to the receiver and 2. Degauss the CRT. adjust static (center) convergence as follows: 3.
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SERVICING VERTICAL-TILT WEDGE ADJUSTMENT IMPROVING CRT CORNER PURITY The vertical lines at 6 and 12 o’clock are converged by CRTs that display corner purity problems even after fol- vertically tilting the yoke and inserting a wedge at the lowing the service procedures can be modified with a top of the yoke until it is firmly seated between the CRT picture correction kit.
6140VC2006D COIL,DEGAUSSING 6335V29020J CPT ASSEMBLY 120-C77G SPEAKER,FULLRANGE 6411VUH003A POWER CORD ASSEMBLY All LG Commercial Models are Module Level repair only. Parts contact information is below. Voice: 1-888-3-ZENITH Fax: 1-888-6-ZENITH Mail: ZENITH NATIONAL PARTS P O Box 240007 Huntsville, AL 35824-6407...
Edge Card Luminance C C O O N N 1 1 C C N N 1 1 E E 1 1 1 1 C C N N 1 1 V V G G A A 1 1 0 0 6 6 6 6 3 3 0 0 V V L L 0 0 2 2 7 7 1 1 1 1 6 6 6 6 3 3 0 0 V V L L 0 0 2 2 7 7 1 1 1 1 3 3 6 6 6 6 - - 9 9 2 2 2 2 J J + + 1 1 2 2 L L S S P P...
2nd PCB Layout Top CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE LETTER “X” IN THEIR ALL COMPONENTS WITH “M” IN THE DESIGNATOR 3828VD0210A FC NARROW SHEET 13 6-13 COMPONENTS DESIGNATORS. REPLACE ONLY WITH PART NUMBERS SPECIFIED. ARE A SURFACE MOUNTED COMPONENT.