website:http://biz.LGservice.com e-mail:http://www.LGEservice.com/techsup.html LCD TV SERVICE MANUAL CHASSIS : LA61A MODEL : 42LB1DR-UA / 42LB1DRA-UA CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
SAFETY PRECAUTIONS IMPORTANT SAFETY NOTICE Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by in the Schematic Diagram and Replacement Parts List. It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent Shock, Fire, or other Hazards.
SERVICING PRECAUTIONS CAUTION: Before servicing receivers covered by this service unit under test. manual and its supplements and addenda, read and follow the 2. After removing an electrical assembly equipped with ES SAFETY PRECAUTIONS on page 3 of this publication. devices, place the assembly on a conductive surface such as NOTE: If unforeseen circumstances create conflict between the aluminum foil, to prevent electrostatic charge buildup or...
Page 5
IC Remove/Replacement Some chassis circuit boards have slotted holes (oblong) through Circuit Board Foil Repair which the IC leads are inserted and then bent flat against the Excessive heat applied to the copper foil of any printed circuit circuit foil. When holes are the slotted type, the following technique board will weaken the adhesive that bonds the foil to the circuit should be used to remove and replace the IC.
SPECIFICATION NOTE : Specifications and others are subject to change without notice for improvement. 1.General Specification(TV) Item Specification Remark Video input applicable system PAL-D/K, B/G, I, NTSC-M, SECAM NTSC 4.43 Receivable Broadcasting System 1) PAL/SECAM BG (ZE/TE) 2) PAL/SECAM DK EU/Non-EU 3) PAL I/I (PAL Market)
Page 7
2. General Specification Item Specification Remark Panel 42" TFT WXGA LCD Frequency range H : 31 ~ 61Khz PC Input V : 56 ~ 75Hz Control Function 1) Contrast/Brightness 2) H-Position / V-Position 3) Tracking : Clock / Phase 4) Auto Configure 5) Reset Component Jack 1 : Y...
Page 8
3.Optical Feature(LCD Module) Item Specification Remark R/L, U/D 176, 176 Viewing Angle<CR 10> Luminance(cd/ ) Luminance Variation Typical MAX/MIN Contrast Ratio (With Al) 1000 ALL white/All back WHITE Typ. 0.285 CIE Color Coordinates Typ. 0.293 Typ. 0.640 Typ. Typ. 0.341 Typ.
ADJUSTMENT INSTRUCTION 1. Application Object If you turn on a still screen more than 20 minutes (Especially These instructions are applied to all of the PDP TV, PA61A. Digital pattern(13 CH), Cross Hatch Pattern), an afterimage may occur in the black level part of the screen. 2.
Page 12
(2) Select "Configure -> Select Device". (7) Download is executed and about 5 seconds later, the "Programming succeeded" message is displayed on the Output window and the Download process is ended. (8) The execution of process (6) is convenient when using the (3) When the "Select Device"...
Page 13
(4) Click the "OpenFile - Download" button from CP Data 6. Gemstar Operation Confirmation Download, ‘select the Private Key’ appears and click ENTER. 6-1. Required Test Equipment (1) PC with Factory Test Program (2) VBI Inserter (Norpak TES3) - Guide Data Discharge Equipment [ In case of without the VBI Inserter(TES3), a VCR may be used.
Page 14
7. Cable Operation Confirmation (1) Confirm that the Cable Card is inserted in the slot. (2) Enter the EZ adjust menu by pressing the Adjust key on the Service Remote Control (S R/C). (3) Go to number 2 Cable Check and press the Right key ( (4) Confirm items below.
Page 15
When the adjustment is over, 'ADC RGB_DTV Success’ 10. ADC-Set Adjustment is displayed. (5) Readjust after confirming the case Pattern or 10-1. Synopsis adjustment condition where the adjustment errors. ADC-Set adjustment to set the black level and the Gain to Error massage is ‘Component Not Connection’...
Page 16
11-2. Adjustment of White Balance Operate the Zero-calibration of the CA-210, then attach sensor to PDP module surface when you adjust. Manual adjustment is also possible by the following sequence. (1) HEAT RUN at least 30 minutes by pressing the Power only Key on the Service Remote Control and adjust.
SVC REMOCON To turn the TV on or off POWER To turn the TV on automatically if the power is supplied to the TV. (Use the POWER ON POWER key to deactivate): It should be deactivated when delivered. To activate the mute function. MUTE To check TV screen image easily.
REPLACEMENT PARTS LIST For Capacitor & Resistors, the CC, CX, CK, CN, CH : Ceramic RD : Carbon Film charactors at 2nd and 3rd digit in the CQ : Polyestor RS : Metal Oxide Film P/No. means as follows; CE : Electrolytic RN : Metal Film CF : Fixed Film RH : CHIP, Metal Glazed(Chip)
Need help?
Do you have a question about the 42LB1DRA - 42" LCD Integrated HDTV and is the answer not in the manual?
Questions and answers