LG Electronics 42LC2D(B), 32LC2D(B), 37LC2D(B) service manual No image

Page 23

Manual background

No image

Is the

YES

Is the input

NO

Attach the input

Set ON

cable attached?

cable(s)

NO

YES

Push the POWER

ON key

Check the

What is

Power Error

Condition of all

PASS

Connectors, wafers,

the input signal

I2C In the

mode?

FAIL

system.

Check 8bit

FAIL

DTV

Signal at digital

Check 5V

Tuner at

At L305,310

R318-326.

PASS

PASS

- 23

Check 24bit

Check 8bit

Check 8bit

Replace Tuner

-

Check LVDS

PASS

PASS

PASS

RGB at AR700-

Signal at AR 500-

Signal at AR110-

Output of Cortez

PASS

AR705

AR501

AR111

Check for S/W error

FAIL

FAIL

FAIL

FAIL

Replace Cortez

Replace IC505

Check power

PASS

Check Power

Levels for

Replace STi5100

Levels and crystal

STi5100

PASS

Replace Hudson

FAIL

FAIL

Power Error

Power Error

Image 23

Contents SERVICE MANUAL READ THE SAFETY PRECAUTIONS IN THIS MANUALCHASSIS LD61A FACTORY NAME 32LC2DB-EC/37LC2DB-EC/42LC2DB-EC BEFORE SERVICING THE CHASSISSPECIFICATION CONTENTSCONTENTS PRODUCT SAFETYLeakage Current Hot Check circuit SAFETY PRECAUTIONSIMPORTANT SAFETY NOTICE General GuidanceElectrostatically Sensitive ES Devices SERVICING PRECAUTIONSPower Output, Transistor Device Removal/Replacement IC Remove/ReplacementReplacement Small-Signal Discrete Transistor Removal/Replacement1.General SpecificationTV SPECIFICATIONreatment of the front polarizer 2. General Specification4.Component Video Input Y, PB, PR 3.Optical FeatureLCD ModuleRGB-PC EDID DATA 5. RGB PC INPUT Mode Table6. RGB DTV INPUT Mode Table HDMI EDID DATA 7. HDMI INPUT Mode Table8. HDMI DTV Mode Table Table 1 Scart Arrangement 1.Full Scart 7. Mechanical specification8. Mechanical specification 32LC2DTable 2 Scart Arrangement 2.Half Scart 3. Channel Memory ADJUSTMENT INSTRUCTION2. Specification 1. Application RangePanel size selection 5. Select method of Panel size6. ADC Calibration Before AV ADC Calibration, should be executed theCool11000K - x 0.274±0.003, y 0.286±0.003 7. White BalanceBefore White-balance, the AV ADC should be done Case1 EC and FC model use PAL-BGDHI composite signalFUNTION SVC REMOCONTROUBLESHOOTING No image attached? Is the input cableNo image PASS No image No image No image No image No image AV1,AV2 ,AV3 TROUBLESHOOTING AV1, 2, 3, 4/S-VideoVolume level Of AV4/S-Video L/R signalTROUBLESHOOTING DTV/HDMI-Audio TROUBLESHOOTING RF/Component/PC FFC Wafer BLOCK DIAGRAMMainTDFB-G236P DVB/PAL WaferSound processor BLOCK DIAGRAMJackAUDIO/VI DEO SW CXA2069Q010 020050 EXPLODED VIEW32LC2DDESCRIPTION EXPLODED VIEW PARTS LIST32LC2DEXPLODED VIEW37LC2D EXPLODED VIEW PARTS LIST37LC2D 020080 130030 150 090 EXPLODED VIEW42LC2DEXPLODED VIEW PARTS LIST42LC2D CAPACITOR REPLACEMENT PARTS LISTMAIN BOARD DATE 2006. 05 DATE 2006. 05 DATE 2006. 05 DIODEs COIL & CORE & INDUCTOR RESISTORs TRANSISTORDATE 2006. 05 DATE 2006. 05 DATE 2006. 05 DATE 2006. 05 JACK BOARD OTHERsDATE 2006. 05 COIL & CORE & INDUCTOR DIODEsRESISTORs TRANSISTORDATE 2006. 05 CONTROL BOARD IR/LED BOARD SIDE A/V BOARDPage Page Page Page Page Printed in Korea P/NO 38289S0043