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LG 29FU1RNX Service Manual

Chassis: cw71a
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P/NO : MFL33997507
COLOR TV

SERVICE MANUAL

Apr., 2007
Printed in China
CHASSIS : CW71A
MODEL: 29FU1RNX
MODEL:
29FU1RNX-ZW
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 29FU1RNX

  • Page 1: Service Manual

    COLOR TV SERVICE MANUAL CHASSIS : CW71A MODEL: 29FU1RNX MODEL: 29FU1RNX-ZW CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. Apr., 2007 P/NO : MFL33997507 Printed in China...
  • Page 2: Table Of Contents

    CONTENTS Contents ....................2 Safety Precautions..................3 Control Descriptions ................4 Specifications....................7 Adjustment Instructions................8 SVC Remocon ..................15 Trouble Shooting ..................16 Printed circuit board................19 Block Diagram..................22 Exploded View..................24 Exploded View Parts List ...............25 Replacement Parts List ................26 SVC. Sheet....................- 2 -...
  • Page 3: 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 in 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 4: Control Descriptions

    STOP accepts your selection or displays the current mode. I/II LIST VCR BUTTONS (option) SLEEP EYE/ control a LG video cassette recorder. MAIN STILL/ INDEX/ Q.VIEW I/II TEXT selects the language during dual language broadcast. selects the sound output (option).
  • Page 5 MENU selects a menu. 15. LIST displays the programme table. 16. SSM (Sound Status Memory) recalls your preferred sound setting. EYE/ (option) POWER MUTE switches the eye function on or off. 18. Q.VIEW returns to the previously viewed programme. 19. INDEX (option) switches FRONT DISPLAY on or off.
  • Page 6 1. MAIN POWER (ON/OFF) switches the set on or off. 29FU1 series 2. POWER/STANDBY INDICATOR illuminates brightly when the set is in standby mode. dims when the set is switched on. 3. MENU selects a menu. 4. OK accepts your selection or displays the current mode.
  • Page 7: Specifications

    SPECIFICATIONS Note : Specification and others are subject to change without notice for improvement. Scope Test Condition O 2 @ @ 6 K h e O 2 @ @ 6 K h e W 2 @ @ @ @ @ @ 6 X h 7 @ @ @ @ @ @ @ @ 1 h W 2 @ @ @ @ @ @ 6 X h 7 @ @ @ @ @ @ @ @ 1 h...
  • Page 8: Adjustment Instructions

    ADJUSTMENT INSTRUCTIONS 1. Application Scope These instructions are applied to Super Slim and FLAT CRT TV with CW71A Chassis.. 2. Notes (1) Because this is not a hot chassis, it is not necessary to use an isolation transformer. However, the use of isolation transformer will help protect test instrument.
  • Page 9: White Balance Adjustment

    (1) Execute this check on the Frame ASSY Process. - PATTERN: 33 in Pattern Generator (MSPG-925 Series) (2)Check if TV turns stand-by mode while you make be (Color Bar Pattern signal) shorten R417 and R418 in Main PCB (3) Adjustment (Check if JIG must be prepared parallel 30KΩ...
  • Page 10 V ' @ @ ( Y h ? ? V ' @ H ? h ? V ' h e ? ? of LG TV, receive available deflection adjustment In line adjustment, not to change default value is basic pattern (Ex: Cross-hatch + Circle)
  • Page 11 Change signal into cross-hatch pattern in order to adjust ? W & ? W & @ L ? W & @ @ ) X ? ? O & @ @ @ @ @ @ 1 W & @ @ @ @ ) X ? W 2 @ @ @ @ @ @ @ @ @ L ? O &...
  • Page 12: Shipping Condition

    Appendix: SERVICE MODE [OPTION 3] CODE FUNCTION REMARK 1. Service Mode Menu 2 : 2 SCART [SC ID enable +SC_RGB(soft mix)+SAV2] 2: 2 Scart SCRT 1 : 1 SCART [SC ID enable + SC_RGB(soft mix)] 1 : 1 Scart+1 Phone SEAWOLF3 0 : WITHOUT SCART JACK (ALL PHONE JACK) 0 : All Phone Jack...
  • Page 13 1) SUPER SLIM MODEL 5. Picture mode setting (EU/Non-EU): NTSC Line This section is made for Engineer. These data can be Items Adjustment Pro (50Hz) 100 (100 Hz) writable and readable. But data can not be stored. 0 => +1 14 =>15 +2 =>...
  • Page 14 8. Initial data of TB1307FG (Deflection ? W - X h f ? ' 6 X e ? * @ , e ? W 2 ( g Warning ? V ' ) X ? ? V + Y e W & ( Y g V ' ) X f ? W &...
  • Page 15: Svc Remocon

    SVC REMOCON - 15 -...
  • Page 16: Trouble Shooting

    TROUBLE SHOOTING 1. NO PICTURE(SOUND OK) Check MAIN1 R159 Waveform. CVBS Signal ? (2Vpp) Waveform of Digital Board Check Tuner(TU101) VIDEO output Check Q152 IC100 # 48 ? Waveform of Digital Board Check around IC100 & 106 IC106 R/G/B OUT #48/1/2? Waveform of Digital Board Check around IC106 IC106 # 38/36/34 ?
  • Page 17 3. NO POWER ON Check ST_3.3V of IC100 #170,208.. Check MAIN Board of Power Line ST_1.8V of IC100 #1561719.. Check IC100 #206,207 Replace X100 (OSC) Check IC001#203,204 (SCL,SDA) Replace R323,R325 Check IC100 #134 (ABN) Check Abnormal Circuit Check Digital P105,P107 Check IC100 #154 ( IR ), connector #143/144 (Key In)
  • Page 18 4.NO RASTER Check +B voltage 126V~130V(128V) OPEN Check F1701 Is the voltage at VCC of Fuse on PSW IC100 ST_1.8V and ST_3.3V ? Board Check / Replace F1701 Check ST_Voltage Check the voltage of C804 Does the square waveform from Pin 11 Check / Replace of IC106 appear? D801...
  • Page 19: Printed Circuit Board

    PRINTED CIRCUIT BOARD MAIN - 19 -...
  • Page 20 POWER CONTROL IF-DEMODULATION HARMONICS - 20 -...
  • Page 21 DIGITAL CPT DRIVE LED+PRE-AMP - 21 -...
  • Page 22: Block Diagram

    BLOCK DIAGRAM - 22 -...
  • Page 23 MEMO - 23 -...
  • Page 24: Exploded View

    EXPLODED VIEW - 24 -...
  • Page 25: Exploded View Parts List

    Cover Assembly,Rear, 29FU1RNX-ZW CW71A 29 B/C ASSY 2SCA EBR35588101 Hand Insert PCB Assembly, SUB M.I CW71A 29FS6 CPT DRIVE EBR37597705 Hand Insert PCB Assembly, MAIN M.I CW71A 29FU1RNX-ZW. QD EBR37597707 Hand Insert PCB Assembly, MAIN M.I CW71A 29FU1RNX-ZW. KDRLCEY EBR35582003 Hand Insert PCB Assembly, SUB M.I CW71A 29FU1 CONTROL-KEY...
  • Page 26: Replacement Parts List

    REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION Q124 0TR150400BA 2SA1504S(ASY) PNP -5V -50V -50V Q125 0TR387500AA 2SC3875S(ALY) NPN 5V 60V 50V 150 HIC920 0IZZVF0018C STK396-130 STK396-130 SANYO DIP Q126 0TR150400BA 2SA1504S(ASY) PNP -5V -50V -50V IC100 0IMMRAL025B AT24C32A-10PU-1.8 32KBIT 4K X 8b...
  • Page 27 For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the characters at 2nd and 3rd CQ : Polyester RS : Metal Oxide Film digit in the P/No. means as CE : Electrolytic RN : Metal Film follows;...
  • Page 28 For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the characters at 2nd and 3rd CQ : Polyester RS : Metal Oxide Film digit in the P/No. means as CE : Electrolytic RN : Metal Film follows;...
  • Page 29 For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the characters at 2nd and 3rd CQ : Polyester RS : Metal Oxide Film digit in the P/No. means as CE : Electrolytic RN : Metal Film follows;...
  • Page 30 For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the characters at 2nd and 3rd CQ : Polyester RS : Metal Oxide Film digit in the P/No. means as CE : Electrolytic RN : Metal Film follows;...
  • Page 31 For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the characters at 2nd and 3rd CQ : Polyester RS : Metal Oxide Film digit in the P/No. means as CE : Electrolytic RN : Metal Film follows;...
  • Page 32 For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the characters at 2nd and 3rd CQ : Polyester RS : Metal Oxide Film digit in the P/No. means as CE : Electrolytic RN : Metal Film follows;...
  • Page 33 For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the characters at 2nd and 3rd CQ : Polyester RS : Metal Oxide Film digit in the P/No. means as CE : Electrolytic RN : Metal Film follows;...
  • Page 34 For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the characters at 2nd and 3rd CQ : Polyester RS : Metal Oxide Film digit in the P/No. means as CE : Electrolytic RN : Metal Film follows;...
  • Page 35 For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the characters at 2nd and 3rd CQ : Polyester RS : Metal Oxide Film digit in the P/No. means as CE : Electrolytic RN : Metal Film follows;...
  • Page 36 For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the characters at 2nd and 3rd CQ : Polyester RS : Metal Oxide Film digit in the P/No. means as CE : Electrolytic RN : Metal Film follows;...
  • Page 37 6200QL3002N K7257M 33.90MHZ 38.90MHZ 17X3.9X ZX101 6200QL3003G K9650M(B39389-K9650-M100) 33.90_ ACCESSORIES MFL33997703 Manual,Owners PRINTING USER CW71A LG EU 6710V00145J Remote Controller MC05HA W/TXT, W/O PIP 450-018C Connector,RF BS901 - STRAIGHT RF ADAPTER MISCELLANEOUS MAY37235203 Box BOX DW 836 454 642 2 COLOR 29FU1...
  • Page 39: Svc. Sheet

    SVC. SHEET : EBY33537201-S...

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