LG RU-42PZ90 Service Manual
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LG RU-42PZ90 Service Manual

LG RU-42PZ90 Service Manual

Plasma tv
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Download this manual See also: Owner's Manual
P/NO : 3828VD0129Z
Sep., 2003
Printed in Korea
e-mail:http://www.LGEservice.com/techsup.html
PLASMA TV
SERVICE MANUAL
CHASSIS : RF-03GA
MODEL : RU-42PZ90
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
website:http://biz.LGservice.com

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  • Page 1 PLASMA TV SERVICE MANUAL CHASSIS : RF-03GA MODEL : RU-42PZ90 CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. Sep., 2003 P/NO : 3828VD0129Z Printed in Korea...

  • Page 2: Safety Precautions

    SAFETY PRECAUTIONS IMPORTANT SAFETY NOTICE Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by 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 X-RADIATION, Shock, Fire, or other Hazards.

  • Page 3: Table Of Contents

    TABLE OF CONTENTS DESCRIPTION OF CONTROLS ...........4 EXTERNAL CONTROL DEVICE SETUP......7 IR CODE(NEC FORMAT) ...........13 ADJUSTMENT INSTRUCTIONS ........15 BLOCK DIAGRAMS ............18 EXPLODED VIEW...............20 EXPLODED VIEW PARTS LIST .........21 REPLACEMENT PARTS LIST ..........22 SCHEMATIC DIAGRAM............PRINTED CIRCUIT BOARD ........... - 3 -...

  • Page 4: Description Of Controls

    DESCRIPTION OF CONTROLS Controls Controls Front Panel Controls Front Panel Controls ON/OFF Buttons Main Power Button INPUT SELECT Button VOLUME ( ) Buttons MENU Button Remote Control Sensor Power Standby Indicator Illuminates red in standby mode, Illuminates green when the Plasma display is turned on - 4 -...

  • Page 5: Connection Options

    DESCRIPTION OF CONTROLS Connection Options Connection Options Back Connection Panel Back Connection Panel DC IN ANT IN AV(EXPANDED) INPUT AV OUTPUT REMOTE +75 Ω EXPANDED OUTPUT (DC 12V) CONTROL (MONO) AUDIO VIDEO AUDIO VIDEO (MONO) AUDIO AUDIO RS-232C INPUT EXPANDED REMOTE VIDEO DVI INPUT...

  • Page 6: Remote Control Key Functions

    PIP CH D D / E E PLAY Memorizes or erases selected Selects the channel for the sub channel. picture. CAPTION Selects CAPTION mode. Selects the MTS sound: Mono Stereo VCR BUTTONS Control some LG video cassette FAV CH recorders. Selects favorite channels. - 6 -...

  • Page 7: External Control Device Setup

    EXTERNAL CONTROL DEVICE SETUP - Connect the RS-232C input jack to an external control device (such as a computer or an A/V control system) and control the Plasma display’s functions externally. - Connect the serial port of the control device to the RS-232C jack on the Plasma display back panel. - RS-232C connection cables are not supplied with the Plasma display.
  • Page 8 EXTERNAL CONTROL DEVICE SETUP Set ID Set ID - Use this function to specify a plasma display ID number. SPECIAL SPECIAL Language 1. Press the MENU button and then use button to select the menu. Key lock D D / E E SPECIAL ISM Method 2.
  • Page 9 EXTERNAL CONTROL DEVICE SETUP 01. Power (Command2:a) 04. Screen Mute (Command2:d) G To control Power On/Off of the Plasma display. G To select screen mute on/off. Transmission Transmission [k][a][ ][Set ID][ ][Data][Cr] [k][d][ ][Set ID][ ][Data][Cr] Data 0 : Power Off 1 : Power On Data 0 : Screen mute off (Picture on) 1 : Screen mute on (Picture off)
  • Page 10 EXTERNAL CONTROL DEVICE SETUP 08. Brightness (Command2:h) 13. Remote Control Lock Mode (Command2:m) G To adjust screen brightness. G To lock the remote control and the front panel controls on You can also adjust brightness in the Video menu. the plasma display. Transmission Transmission [k][h][ ][Set ID][ ][Data][Cr]...
  • Page 11 EXTERNAL CONTROL DEVICE SETUP 17. PIP Position (Command2:q) 21. Color Temperature (Command2:u) G To select sub picture position for PIP. G To adjust color temperature. You can also adjust ACC in the Video menu. You can also adjust the sub picture position using WIN.POSITION on the remote control or in the Special menu.
  • Page 12 EXTERNAL CONTROL DEVICE SETUP 25. PIP Input Select (Command2:y) 29. Orbiter Time Setting (Command2:r) G To adjust orbiter operation time term. G To select input source for sub picture in PIP mode. Transmission Transmission [j][r][ ][Set ID][ ][Data][Cr] [k][y][ ][Set ID][ ][Data][Cr] Data 0 : RGB 4 : DVI Data Min: 1 ~ Max: FE...

  • Page 13: Ir Code(Nec Format)

    IR Code(NEC Format) How to Connect How to Connect G Connect your wired remote control to the Remote port on the Plasma display. Remote Control IR Code (NEC Format) Remote Control IR Code (NEC Format) G Output waveform Single pulse, modulated with 37.917KHz signal at 455KHz Carrier frequency = 1/T Duty ratio = T1/T...
  • Page 14 IR Code(NEC Format) Code (Hexa) Function Note UP ( R/C Button DOWN ( R/C Button VOL+ ( R/C Button VOL- ( R/C Button POWER ON/OFF R/C Button (Power On/Off) POWER ON Discrete IR Code (Only Power On) POWER OFF Discrete IR Code (Only Power Off) MUTE R/C Button Number Key 0...

  • Page 15: Adjustment Instructions

    ADJUSTMENT INSTRUCTIONS 1. Application 3-2 Connection Diagram for Measuring Refer to Fig 1. These instructions apply to the RF-03GA. P805 P805 P805 2. Notes (1) Because this is not a hot chassis, it is not necessary to use an isolation transformer. However, the use of isolation RV401 RV401 RV401...
  • Page 16 ADJUSTMENT INSTRUCTIONS White : 255 Gray level (2) Press POWER ON KEY on the Adjustment R/C and select (8) Press Vol. + key and operate To SET for Pr-offset RGB Cut. adjustment. (3) Press Vol. + key and operate TO SET(Black). (9) Original Half Red(127 level) screen will be presented (4) Original Half Black/White(255 Gray) screen will be about 5~10 seconds later and the OK indication appears.
  • Page 17 ADJUSTMENT INSTRUCTIONS 5. Adjustment of White Balance 6. DDC Data Input 5-1. Required Equipment 6-1. Required Test Equipment Color analyzer (CA-100 or similar product) (1) A jig for adjusting PC, DDC. (PC serial to D-sub. Connection equipment) 5-2. Connection Diagram of Equipment for (2) S/W for writing DDC(EDID data write &...

  • Page 18: Block Diagrams

    BLOCK DIAGRAM - 18 -...
  • Page 19 BLOCK DIAGRAM - 19 -...

  • Page 20: Exploded View

    EXPLODED VIEW <Tuner> - 20 -...

  • Page 21: Exploded View Parts List

    6871QZH030A PCB ASSEMBLY,DISPLAY ZSUS ASSY 42SD5(YZ SEPARATE) 4980V00240A SUPPORTER,VERTICAL EGI FD-42X3 4980V00240B SUPPORTER,VERTICAL EGI MN-42PZ10 3091V00516A CABINET ASSEMBLY,MZ-42PZ90 NON NON LG BRAND DARK SILVER 4980V00266A SUPPORTER ASSY,NON FILTER TOP MN-42PZ10 4980V00267A SUPPORTER ASSY,NON FILTER BOTTOM 4980V00268A SUPPORTER ASSY,NON FILTER SIDE...

  • Page 22: Replacement Parts List

    REPLACEMENT PARTS LIST For Capacitor & Resistors, the CC, CX, CK, CN : Ceramic RD : Carbon Film charactors at 2nd and 3rd digit CQ : Polyestor RS : Metal Oxide Film RUN DATE : 2003.8.28 in the P/No. means as follows; CE : Electrolytic RN : Metal Film RF : Fusible...
  • Page 23 REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION Q101 0TR387500AA CHIP 2SC3875S(ALY) KEC Q478 0TR104009AF CHIP KRC104S SOT23 TP KEC Q1425 0TR387500AA CHIP 2SC3875S(ALY) KEC Q479 0TR387500AA CHIP 2SC3875S(ALY) KEC 0TR387500AA CHIP 2SC3875S(ALY) KEC 0TR387500AA CHIP 2SC3875S(ALY) KEC Q1473 Q720...
  • Page 24 REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION D871 0DD226239AA CHIP KDS226 SOT23 C029 0CE106SF6DC 10UF MVG 16V 20% D872 0DD226239AA CHIP KDS226 SOT23 C030 0CE107SF6DC 100UF MVG 16V M 0DD226239AA CHIP KDS226 SOT23 0CE105SK6DC 1UF MVG 50V M D873 C030...
  • Page 25 REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION C127 0CE476SF6DC 47UF MVG 16V M C420 0CN105EJ56A 1.0UF 3216 35V 10% C137 0CE106SF6DC 10UF MVG 16V 20% C421 0CE107DF618 100UF STD 16V M 0CE107SF6DC 100UF MVG 16V M 0CE107DF618 100UF STD 16V M C140...
  • Page 26 REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION C772 0CE477VF6DC 470UF MV 16V 20% P001 6612J00010B JACK,RCA PPJ128A2 A/V 3P C774 0CE227VF6DC 220UF MV 16V 20% P002 6612J00010B JACK,RCA PPJ128A2 A/V 3P 0CE476SF6DC 47UF MVG 16V M 380-068D JACK,PHONE UEJCV003 C785...
  • Page 27 REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION AR463 0RRZVTA001D 22 OHM 1 / 16 W 1608 5% SW800 6600VM2006A SWITCH,PUSH SDDF3PATP011 250V AR465 0RRZVTA001D 22 OHM 1 / 16 W 1608 5% FILTER & CRYSTAL 0RRZVTA001D 22 OHM 1 / 16 W 1608 5% AR466...
  • Page 28 COIL,CHOKE 26UH L886 6140VB0004B COIL,CHOKE 26UH P001 REMOTE CONTROLLER RECEIVER,38KHZ 6726VV0006E P101 6630VGA001C CONNECTOR,DSUB 15PIN 2.29MM CONNECTOR ASSEMBLY,4P 2.5MM P102B 387-B04C P104 6630VGA001C CONNECTOR,DSUB 15PIN 2.29MM P741 6630VGA004B CONNECTOR,DSUB 9P 2.77MM TU201 6700VNF019E TUNER,TAFHH001P LG NTSC FS - 28 -...
  • Page 34 PRINTED CIRCUIT BOARD MAIN(TOP) MAIN(BOTTOM) AV(TOP) PIGGY BACK(TOP) PIGGY BACK(BOTTOM) SPEAKER (TOP) POWER SWITCH SPEAKER (BOTTOM) AV(BOTTOM) AV FIX(TOP) CONTROL(TOP) AV FIX(BOTTOM) CONTROL(BOTTOM)

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