LG RZ-42LZ30 Service Manual Download Page 12 | Manualshive

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TROUBLESHOOTING

No Power

(LED Indicator off)

Change IC1305

Change IC901, IC905

Change LED Ass'y

Check SMPS output

Check P201 Connector

Change SMPS Board

Check SMPS

Output

Stby 5V, Stby 3.3V,

18V, 3.3V

Fail

Check in

Input B+

IC901 & IC905

Fail

Fail

Pass

Pass

Pass

Check IC1305

Check index

STBY 5V

(LED ASS'Y)

Fail

Pass

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Summary of Contents for RZ-42LZ30

Page 1: ... TV SERVICE MANUAL CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS ML 038C MODEL RZ 42LZ30 website http biz LGservice com e mail http www LGEservice com techsup html ...

Page 2: ...TENTS CONTENTS 2 PRODUCT SAFETY 3 SPECIFICATION 6 ADJUSTMENT INSTRUCTION 9 SVC REMOCON 11 TROUBLE SHOOTING 12 BLOCK DIAGRAM 16 EXPLODED VIEW 18 EXPLODED VIEW PARTS LIST 19 REPLACEMENT PARTS LIST 20 SVC SHEET ...

Page 3: ...erform an AC leakage current check on the exposed metallic parts of the cabinet such as antennas terminals etc to be sure the set is safe to operate without damage of electrical shock Leakage Current Cold Check Antenna Cold Check With the instrument AC plug removed from AC source connect an electrical jumper across the two AC plug prongs Place the AC switch in the on position connect one lead of o...

Page 4: ...are integrated circuits and some field effect transistors and semiconductor chip components The following techniques should be used to help reduce the incidence of component damage caused by static by static electricity 1 Immediately before handling any semiconductor component or semiconductor equipped assembly drain off any electrostatic charge on your body by touching a known earth ground Altern...

Page 5: ...d the corresponding lead on the circuit board 4 Securely crimp each connection and solder it 5 Inspect on the circuit board copper side the solder joints of the two original leads If they are not shiny reheat them and if necessary apply additional solder Fuse and Conventional Resistor Removal Replacement 1 Clip each fuse or resistor lead at top of the circuit board hollow stake 2 Securely crimp th...

Page 6: ...ut applicable system AV input system Available channel PC Signal Input RGB Input Input Voltage Active Display Size Operating Temperature Operating Humidity Storage Temperature Storage Humidity LCD Panel Lamp Speaker 1 PAL SECAM BG 2 PAL SECAM DK 3 PAL I I 4 SECAM L L 1 PAL 2 SECAM 3 NTSC 3 58 4 43 1 VHF E2 E12 UHF E21 E69 CATV S1 S20 HYPER S21 S41 2 L L VHF B C D VGA SVGA XGA 1024 x 768 AC 230V 50...

Page 7: ...n LG Code Only MENU PR VOL TV AV OK 0 I Colour Temperature Contrast Brightness Colour Tint Sharpness Dynamic Standard Mild User Normal Cool Warm User FLI2300 FM Stereo Nicam Stereo FM Stereo Nicam Stereo TOP FLOP LIST 128 Page O 1 PIP O 16 9 FULL 4 3 14 9 Zoom Letter Box Auto ARC 16 9 FULL 4 3 0 50 16 9 FULL 4 3 English French Deutsch Spanish Italian Item Specification Remark No EU 8 Key Tint NTSC...

Page 8: ...7 60 15 49 725 V freq kHz 70 09 85 08 70 08 85 03 59 94 72 80 75 00 56 25 60 31 72 18 75 00 85 06 100 00 60 00 70 06 75 02 84 99 60 00 75 00 74 55 Proposed Remark EGA EGA DOS DOS VESA VGA VESA VGA VESA VGA VESA SVGA VESA SVGA VESA SVGA VESA SVGA VESA SVGA VESA SVGA VESA XGA VESA XGA VESA XGA VESA XGA GTF WXGA GTF WXGA Macintosh 16 RGB 1 Only Pixel clock 25 17 31 50 28 32 35 50 25 17 31 50 31 50 36...

Page 9: ...pondent 1 SelectWHITEPATTERNofHEATRUNmodebypressing POWERON keyonSVCCommunicatorandthenoperateHEATRUNmorethan15minutes 2 SupplypatternsignalforWBadjustmentinpatterngenerator ExternalINPUT 3 LowLighthasnospecialadjustment 4 ToadjustHighLight sticksensorto 2 pattern White andafterselecttheR H G HbypressingADJbuttononSVCCommunicator presstheVol Key andadjustituntilcolorcoordinationbecomes BGAINisfixe...

Page 10: ...FF ON 11 Figure 1 Cable Connection Windows EDID V1 0 User Manual Operating System MS Windows 98 2000 XP Port Setup Windows 98 Don t need setup Windows 2000 XP Need to Port Setup This program is available to LCD Monitor only 1 Port Setup a Copy UserPort sys file to c WINNT system32 drivers folder b Run Userport exe c Remove all default number d Add 300 3FF e Click Start button f Click Exit button 2...

Page 11: ...k the front AV To move channel up down or to select a function displayed on the screen To adjust the volume or accurately control a specific function To set a specific function or complete setting To move the channel down in the PIP screen To use as a red key in the teletext mode To move the channel in the PIP screen To use as a green key in the teletext mode To switch between the main and sub scr...

Page 12: ...IC1305 Change IC901 IC905 Change LED Ass y Check SMPS output Check P201 Connector Change SMPS Board Check SMPS Output Stby 5V Stby 3 3V 18V 3 3V Fail Check in Input B IC901 IC905 Fail Fail Pass Pass Pass Check IC1305 Check index STBY 5V LED ASS Y Fail Pass ...

Page 13: ...Pass Check invert Pass Check panel Link cabel Pass Change panel Link cabel Pass Check module Check the 77 76 of IC901 Pass Change module Fail Change IC905 Change IC905 Change input source cabel and Jack Check Output of IC905 Pass Pass Pass Check IIC ERROR of IC901 Pass Check IIC ERROR of IC901 Fail A process ...

Page 14: ...3V of TU801 Re soldering or Change the defect part Check the input of IC1201 Fail Pass Check the C1238 C1240 C1243 C1236 Change the defect part Check the in output of IC1201 Fail Pass Re soldering or Change the defect part Check the in outputof IC401 Fail Pass Re soldering or Change the defect part Check input source cabel and jack ...

Page 15: ...C1102 Fail Fail Fail Pass Change the Defet part Check the input of IC1001 IC1002 Check the output of IC1102 Pass Pass Fail Pass Change IC601 Check the R1144 R1140 Fail Change R1144 R1140 Check the output of IC1001 IC1002 Fail Pass Change IC1001 IC1002 Check the speaker Fail Pass Change speaker Check the speaker wire ...

Page 16: ...rlacing Enhancer OPLUS YUV 4 2 2 H V SYNC YUV 4 2 2 H V SYNC SDRAM SDRAM x 3 AD9888 A D Convetor SDA555 EPROM SRAM EEPROM SIL161 DS232A TMDS Receiver Level shfting M COM Flash Memory SRAM EEPROM L V D S LCD Module MSM82C55 Port Extension CNTL IR Scart R G B Digital R G B 24BIT 4 4 4 R G B H V CXA2101 Component Processor H V SYNC MSP3410 MPS7720 SPK Stereo ...

Page 17: ...deo Signal Path _ CXA2089 is switching IC for AV signals AV1 AV2 AV3 RF signals _ VPC3230 are have functions are high performance adaptive 4H Comb Filter Y C separator with adjustable vertical peaking multi standard color decoder PAL NTSC SECAM including all sub standards _ FLI2300 is Deinterlacer Line doubler Supports 525 60 NTSC 625 50 PAL SECAM Accept up to 1100 pixels line _ Scaler input Block...

Page 18: ... 18 EXPLODED VIEW 1 2 3 4 15 17 19 16 18 9 10 8 7 5 6 13 14 20 21 23 22 11 12 ...

Page 19: ...TAL SUPPORTER EGI SUPPOTER EXTRA DIE CASTING 11 6871TPT277A PWB PCB ASSEMBLY POWER DN 42LZ30 POWER TOTAL BRAND INCLUDE D D 12 6871TPT277B PWB PCB ASSEMBLY POWER DN 42LZ30 POWER TOTAL BRAND LEFT NONE D D 13 3141VSN889A CHASSIS ASSEMBLY SUB ML038B LED ASSY FOR RZ 42LZ30 14 6871TSH601A PWB PCB ASSEMBLY SUB RZ 42LZ30 SUB HAND BRAND A V BOARD 15 4951TKS147B METAL ASSEMBLY FRAME RZ 42LZ30 4950TKS290B 49...

Page 20: ...L LOC NO PART NO DESCRIPTION SPECIFICATION C163 0CE107DF618 100UF STD 16V M FL TP5 C167 0CE107DF618 100UF STD 16V M FL TP5 C170 0CE107DK618 100UF STD 50V M FL TP5 C236 0CE106DF618 10UF STD 16V M FL TP5 C238 0CE106DF618 10UF STD 16V M FL TP5 C239 0CE476DF618 47UF STD 16V M FL TP5 C240 0CE106DF618 10UF STD 16V M FL TP5 C249 0CE476DF618 47UF STD 16V M FL TP5 C253 0CE107DF618 100UF STD 16V M FL TP5 C2...

Page 21: ...5 PF NP0 2012 R TP C1139 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP DATE 2004 06 10 S AL LOC NO PART NO DESCRIPTION SPECIFICATION C114 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C1141 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C1144 0CH3103K516 10000PF 50V 10 B Y5P 2012 C1149 0CH3103K516 10000PF 50V 10 B Y5P 2012 C1150 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C1151 0CH6010K116 1PF 50V 0 5 PF NP0 2012 R TP C1160...

Page 22: ...2012 R TP C410 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C411 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP DATE 2004 06 10 S AL LOC NO PART NO DESCRIPTION SPECIFICATION C412 0CH3103K516 10000PF 50V 10 B Y5P 2012 C416 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C418 0CH3103K516 10000PF 50V 10 B Y5P 2012 C421 0CH6391K416 390PF 50V 5 NP0 2012 R TP C436 0CH6391K416 390PF 50V 5 NP0 2012 R TP C439 0CH3103K516 10000PF...

Page 23: ...1UF 50V 10 X7R 2012 R TP C727 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C728 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP DATE 2004 06 10 S AL LOC NO PART NO DESCRIPTION SPECIFICATION C729 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C730 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C731 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C732 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C733 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C735 ...

Page 24: ...9 TP 4 2V VOL IC909 0IKE702700D KIA7027AF 3 SOT 89 TP RESET IC005 0ISS610082A K6X1008T2D TF70 REVISION 32 DATE 2004 06 10 S AL LOC NO PART NO DESCRIPTION SPECIFICATION IC502 0IMMRHY033A HY57V643220C L T 6 HYNIX 86P IC701 0IMMRHY033A HY57V643220C L T 6 HYNIX 86P IC702 0IMMRHY033A HY57V643220C L T 6 HYNIX 86P IC703 0IMMRHY033A HY57V643220C L T 6 HYNIX 86P IC902 0IMMRSS064A K6R4016V1D TC10 SAMSUNG EL...

Page 25: ... TP R1111 0RH6202D622 62K 1 10W 5 TA R1112 0RH4700D622 470 1 10W 5 D R TP DATE 2004 06 10 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R1114 0RH1000D622 100 1 10W 5 D R TP R1116 0RH1000D622 100 1 10W 5 D R TP R112 0RH2001D622 2 0K 1 10W 5 D R TP R1123 0RH4701D622 4 7K 1 10W 5 D R TP R1127 0RH1004D622 1 0M 1 10W 5 D R TP R1129 0RH4703D622 470K 1 10W 5 D R TP R113 0RH2001D622 2 0K 1 10W 5 D R TP R1...

Page 26: ...D R TP R235 0RH1000D622 100 1 10W 5 D R TP R237 0RH6801D622 6 8K 1 10W 5 D R TP R238 0RH2700D622 270 1 10W 5 D R TP DATE 2004 06 10 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R239 0RH8201D622 8 2K 1 10W 5 D R TP R240 0RH1000D622 100 1 10W 5 D R TP R241 0RH6801D622 6 8K 1 10W 5 D R TP R243 0RH2200D622 220 1 10W 5 D R TP R244 0RH2200D622 220 1 10W 5 D R TP R306 0RH3900D622 390 1 10W 5 D R TP R316...

Page 27: ... R TP R981 0RH1000D622 100 1 10W 5 D R TP R983 0RH3301D622 3 3K 1 10W 5 D R TP R984 0RH4700D622 470 1 10W 5 D R TP R986 0RH4701D622 4 7K 1 10W 5 D R TP R987 0RH2001D622 2 0K 1 10W 5 D R TP R988 0RH2200D622 220 1 10W 5 D R TP R989 0RH4702D622 47K 1 10W 5 D R TP R991 0RH0822D622 82 1 10W 5 D R TP R992 0RH2200D622 220 1 10W 5 D R TP R993 0RH2200D622 220 1 10W 5 D R TP AR201 0RRZVTA001D 22 OHM 1 16 W ...

Page 28: ... W 2012 5 00 D R210 0RH0222D622 22 OHM 1 10 W 2012 5 00 D R211 0RH1002D622 10K OHM 1 10 W 2012 5 00 R213 0RH1002D622 10K OHM 1 10 W 2012 5 00 R220 0RH1002D622 10K OHM 1 10 W 2012 5 00 DATE 2004 06 10 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R242 0RH0000D622 0 OHM 1 10 W 2012 5 00 D R303 0RH0000D622 0 OHM 1 10 W 2012 5 00 D R304 0RH0000D622 0 OHM 1 10 W 2012 5 00 D R307 0RH1002D622 10K OHM 1 1...

Page 29: ...R2109 0RH1001D622 1K OHM 1 10 W 2012 5 00 D R101 0RD1002F609 10K 1 6W 5 TA52 R102 0RD1002F609 10K 1 6W 5 TA52 R103 0RD1002F609 10K 1 6W 5 TA52 R104 0RD1002F609 10K 1 6W 5 TA52 R105 0RD1002F609 10K 1 6W 5 TA52 R106 0RD1002F609 10K 1 6W 5 TA52 R107 0RD1002F609 10K 1 6W 5 TA52 R108 0RD1002F609 10K 1 6W 5 TA52 SW1 140 313B TACT 2LEAD 160G TA LG C D N SW2 140 313B TACT 2LEAD 160G TA LG C D N SW3 140 31...

Page 30: ...SCHEMATIC DIAGRAM 30 ...

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Page 48: ...Jun 2004 Printed in Korea P NO 3828TSL103J ...

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