LG Electronics 29FS2AMB/ANX-ZE service manual No raster

Page 19

5. No raster

Check +B voltage 125 ~ 135V or

Is the voltage at VCC of IC001 ST_1.8V and ST_3.3V?

Check F1701 Fuse OPEN

on PSW Board

Check/ Replace IC500

Check/ Replace Q422, T402

YES

Does the square waveform from PIN 23 of IC500 appear

YES

Is the waveform at Drain Q408 normal?

Check ST_Voltage

YES

Check IIC bus lime (SDA, SAC)

OK
OK	Check/ Replace F1771

		0V
Check the voltage of		0V
Check the voltage of
C1806


	Check/ Replace D1810

		0V
Check the voltage at		0V
Check the voltage at
pin2 of IC801
pin2 of IC801


	Check/ Replace IC810


Check the voltage at
P803B 5.6V

Check the output IC830, IC840, IC843

- 19 -

Image 19

Contents MODEL 29FS2AMB/ANX CHASSIS MC-05HACOLOR TV SERVICE MANUAL READ THE SAFETY PRECAUTIONS IN THIS MANUALCONTENTS X-RAY Radiation SAFETY PRECAUTIONSIMPORTANT SAFETY NOTICE General Guidanceswitches the sound on or off CONTROL DESCRIPTIONSrecalls your preferred picture setting sets the sleep timer14. MENU adjusts picture according to the surrounding conditions Front panel1. MAIN POWER ON/OFF switches the set on or off 2. POWER/STANDBY INDICATORA Test and Inspection Method SPECIFICATIONSA General Specifications A Scope3. Soft ware download ADJUSTMENT INSTRUCTIONS1. Application Object 2. Notes6-2. Adjustment 7. Purity & Convergence adjustment4. DVCO Adjustment 6. Focus Adjustment9-3. Adjustment 8. Screen voltage Adjustment9. White balance Adjustment 8-2. AdjustmentPage 10-2. Adjustment 10. Deflection Data Adjustment10-1. Preliminary steps 13-2. Preliminary steps 11. Deflection setting initial data13. OPTION setting 13-2. Adjustment MethodHDEV Table 1 OPTIONTable 2 OPTION CaptionOPTION 2 2 SCARTSC ID enable + SCRGBsoft mix+sav2Table 3 OPTION Table 4 OPTION32 INCH 14. SERVICE MODE DATAAV1, 2, 3, Component 1 INPUT TROUBLE SHOOTING1. No Picture sound ok 2. No Sound picture okSCART 4. No power3. No PIP AV1, 25. No raster MAIN PRINTED CIRCUIT BOARDSTAND-BY DIGITAL TOPSIDE-A/V DIGITAL BOTTOMHARMONICS CONTROL POWER S/W LED + PRE-AMP1. MAIN BLOCK DIAGRAM2. VCT-PVideo 3. VCT-PAudio MEMO 560 580 EXPLODED VIEW943 400 913 112 503 520LOCA. NO EXPLODED VIEW PARTS LISTDESCRIPTIONS TRANSISTOR REPLACEMENT PARTS LISTDIODE CAPACITOR DESCRIPTION COIL & INDUCTOR CONNECTORRESISTOR SWITCH MISCELLANEOUS ACCESSORIESFILTER & CRYSTAL JACK2006.01.20 P/No 38549D0023A-1/2P/No 38549D0023A-2/2 SVC. SHEET 38549D0023A-S Printed in Korea P/NO 38289S0046B