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LG RU-42PZ90 Service Manual

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P/NO : 3828VD0129Z
All manuals and user guides at all-guides.com
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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Summary of Contents for LG RU-42PZ90

  • Page 1 All manuals and user guides at all-guides.com website:http://biz.LGservice.com 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. Sep., 2003 P/NO : 3828VD0129Z Printed in Korea...
  • Page 2 All manuals and user guides at all-guides.com 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

    All manuals and user guides at all-guides.com 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 ...........

  • Page 4: Description Of Controls

    All manuals and user guides at all-guides.com 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 All manuals and user guides at all-guides.com 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 AUDIO (MONO)
  • Page 6 PIP CH D D / E E Memorizes or erases selected PLAY 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

    All manuals and user guides at all-guides.com 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 All manuals and user guides at all-guides.com 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.
  • Page 9 All manuals and user guides at all-guides.com 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)
  • Page 10 All manuals and user guides at all-guides.com 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.
  • Page 11 All manuals and user guides at all-guides.com 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 All manuals and user guides at all-guides.com 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 [k][y][ ][Set ID][ ][Data][Cr] [j][r][ ][Set ID][ ][Data][Cr]...

  • Page 13: Ir Code(Nec Format)

    All manuals and user guides at all-guides.com 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...
  • Page 14 All manuals and user guides at all-guides.com 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...

  • Page 15: Adjustment Instructions

    All manuals and user guides at all-guides.com 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.
  • Page 16 All manuals and user guides at all-guides.com 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 All manuals and user guides at all-guides.com 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.

  • Page 18: Block Diagrams

    All manuals and user guides at all-guides.com BLOCK DIAGRAM - 18 -...
  • Page 19 All manuals and user guides at all-guides.com BLOCK DIAGRAM - 19 -...

  • Page 20: Exploded View

    All manuals and user guides at all-guides.com 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

    All manuals and user guides at all-guides.com 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.
  • Page 23 All manuals and user guides at all-guides.com REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION CHIP 2SC3875S(ALY) KEC CHIP KRC104S SOT23 TP KEC Q101 0TR387500AA Q478 0TR104009AF Q1425 0TR387500AA CHIP 2SC3875S(ALY) KEC Q479 0TR387500AA CHIP 2SC3875S(ALY) KEC Q1473 0TR387500AA CHIP 2SC3875S(ALY) KEC...
  • Page 24 All manuals and user guides at all-guides.com REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION CHIP KDS226 SOT23 10UF MVG 16V 20% D871 0DD226239AA C029 0CE106SF6DC D872 0DD226239AA CHIP KDS226 SOT23 C030 0CE107SF6DC 100UF MVG 16V M D873 0DD226239AA CHIP KDS226 SOT23...
  • Page 25 All manuals and user guides at all-guides.com REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION 47UF MVG 16V M 1.0UF 3216 35V 10% C127 0CE476SF6DC C420 0CN105EJ56A C137 0CE106SF6DC 10UF MVG 16V 20% C421 0CE107DF618 100UF STD 16V M C140 0CE107SF6DC...
  • Page 26 All manuals and user guides at all-guides.com REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION 470UF MV 16V 20% JACK,RCA PPJ128A2 A/V 3P C772 0CE477VF6DC P001 6612J00010B C774 0CE227VF6DC 220UF MV 16V 20% P002 6612J00010B JACK,RCA PPJ128A2 A/V 3P C785 0CE476SF6DC...
  • Page 27 All manuals and user guides at all-guides.com REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION 22 OHM 1 / 16 W 1608 5% SWITCH,PUSH SDDF3PATP011 250V AR463 0RRZVTA001D SW800 6600VM2006A AR465 0RRZVTA001D 22 OHM 1 / 16 W 1608 5% FILTER &...
  • Page 28 L870 6140VB0004B COIL,CHOKE 26UH L886 6140VB0004B P001 6726VV0006E REMOTE CONTROLLER RECEIVER,38KHZ P101 6630VGA001C CONNECTOR,DSUB 15PIN 2.29MM P102B 387-B04C CONNECTOR ASSEMBLY,4P 2.5MM P104 6630VGA001C CONNECTOR,DSUB 15PIN 2.29MM P741 6630VGA004B CONNECTOR,DSUB 9P 2.77MM TU201 6700VNF019E TUNER,TAFHH001P LG NTSC FS - 28 -...
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  • Page 34 All manuals and user guides at all-guides.com 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)