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LG CF-1420F60K Service Manual

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P/NO : 3828VD0104M
P/NO : 3828VD0104M
Contents
Contents
Safety
Safet
y
Servicing Precaut
Servicing
Specifications
Specifications
Description of
Description of
Disassembly
Disassembly
Adjustment
Adjustment
Purity
Purity
Nov.,2003
Nov.,2003
Printed in Korea
Printed in Korea
CONTENTS
CONTENTS
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Precautions
Precaution
s
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Precautions
ions
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Controls
Contr
ols
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Instructions
Instructions
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&
&
Convergen
Convergence
ce
Adjustment
Adjustment..............
COLOR TV
COLOR TV
SERVICE MANUAL
SERVICE MANUAL
CHASSIS : MC-019A
CHASSIS : MC-019A
MODEL :
MODEL :
MODEL :
MODEL :
MODEL :
MODEL :
MODEL :
MODEL :
CAUTION
CAUTION
BEFORE SERVICING THE CHASSIS,
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
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e-mail:http://www.LGEservice.com/techsup.html
e-mail:http://www.LGEservice.com/techsup.html
CF/CT-14/21K40KEX
CF/CT-14/21K40KEX
CF-14/20F60K
CF-14/20F60K
CF/CT-14/20J50K CF-20F80K/KX
CF/CT-14/20J50K CF-20F80K/KX
CF/CT-14/20/21K50KE/51KE/53KE
CF/CT-14/20/21K50KE/51KE/53KE
CF/CT-
CF/CT-14S10KE/20S1
14S10KE/20S11KE//20D70K
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website:http://biz.LGservice.com
website:http://biz.LGservice.com
1KE//20D70K

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  Summary of Contents for LG CF-1420F60K

  • Page 1 website:http://biz.LGservice.com website:http://biz.LGservice.com e-mail:http://www.LGEservice.com/techsup.html e-mail:http://www.LGEservice.com/techsup.html COLOR TV COLOR TV SERVICE MANUAL SERVICE MANUAL CHASSIS : MC-019A CHASSIS : MC-019A CF/CT-14/21K40KEX CF/CT-14/21K40KEX MODEL : MODEL : CF-14/20F60K CF-14/20F60K MODEL : MODEL : CF/CT-14/20J50K CF-20F80K/KX CF/CT-14/20J50K CF-20F80K/KX MODEL : MODEL : CF/CT-14/20/21K50KE/51KE/53KE CF/CT-14/20/21K50KE/51KE/53KE MODEL : MODEL : CF/CT-...
  • Page 2: Table Of Contents

    CONTENTS CONTENTS Contents Contents ..............................................Safet Safety Precaution Precautions ......................................3 Servicing Precaut Servicing Precautions ions ..................................Specifications Specifications .....
  • Page 3: Contents

    CONTENTS CONTENTS Contents Contents ..............................................Safet Safety Precaution Precautions ......................................3 Servicing Precaut Servicing Precautions ions ..................................Specifications Specifications .....
  • Page 4 SAFETY PRECAUTIONS SAFETY PRECAUTIONS IMPORTANT SAFETY NOTICE IMPORTANT SAFETY NOTICE Many electrical Many electrical and mechanical and mechanical parts in parts in this chassis this chassis have have special safety-related special safety-related characteristi characteristics. These cs. These parts are parts are identified by identified by the Schematic Diagram and Replacement Parts List.
  • Page 5 SERVICING PRECAUTIONS CAUTION: Before servicing receivers covered by this service transistors and semicounductor "chip" components. The manual and its supplements and addenda, read and follow the following techniques should be used to help reduce the on page 3 of this publication. incidence of component damage caused by static by static SAFETY PRECAUTIONS If unforeseen circumstances create conflict between the...
  • Page 6 c. Qulckly move the soldering iron tip to the junction of the Fuse and Conventional Resistor component lead and the printed circuit foil, and hold it Removal/Replacement there only until the solder flows onto and around both the 1. Clip each fuse or resistor lead at top of the circuit board component lead and the foil.
  • Page 7: Specifications

    SPECIFICATIONS Note : Specification and others are subject to change without notice for improvement. Video input system: PAL-B/G, D/K, I/I SOUND IF : 33.4MHz (B/G) SECAM-B/G, D/K,L/L’ 32.9MHz (I/I) NTSC M 32.4MHz (D/K) NTSC 4.43 34.4MHz (M) Intermediate Frequency (Unit : MHz) Power requirement : 110~240V, 50/60Hz VISION IF : 38.9MHz COLOR IF : 34.47MHz(4.43)
  • Page 8 DECRIPTIONS OF CONTROLS All the functions can be controlled with the remote control handset. Some functions can also be adjusted with the buttons on the front panel of the set. Remote control handset Before you use the remote control handset, please install the bat- teries.
  • Page 9 10. MUTE switches the sound on or off. 11. TV/AV selects TV or AV mode. clears the menu from the screen. switches the set on from standby. 12. I/II/  (option) selects the language during dual language broadcast. (option) selects the sound output. POWER MUTE 13.
  • Page 10 Front panel Shown is a simplified representation of front or side panel. Here shown may be somewhat different from your set. VIDEO VIDEO ON/OFF MENU OK VIDEO (L)-AUDIO-(R) P-TURBO-S AUDIO AUDIO 2 3 4 TURBO ON/OFF MENU OK VIDEO AUDIO SOUND PICTURE VIDEO VIDEO...
  • Page 11: Disassembly Instructions

    DISASSEMBLY INSTRUCTIONS Important note Chassis Assy Removal This set is disconnected from the power supply through the Grasp both side of Frame and pull it backward smoothly. converter transformer. An isolating transformer is necessary for service operations on the primary side of the converter transformer.
  • Page 12: Adjustment

    ADJUSTMENT Safety Precautions Option Code Function Remark 1. It is safe to adjust after using insulating transformer W/O TBS between the power supply line and chassis input to WITH TBS prevent the risk of electric shock and protect the instrument. W/O EYE 2.
  • Page 13 Table below. 5) Press the OK( ) button to memorize the data. Status Initial Data Remark Tuner P/N 6700VPF009G 6700VPF016A LG Innotek(W/S TUNER) Marker DAEWOO(W/S TUNER) 0.05V AGC Voltage 0.05V 6700VPF009S Tuner P/N BLO-R LG Innotek(TBS TUNER)
  • Page 14 2. Deflection Initial Setup Data Status Default 21" FLAT S/S 21" FLAT LG 3. Deflection Adjustment Procedure VL (Vertical Linearity) Adjust so that the boundary line between upper and lower half is in accord with geometric horizontal center of the CPT.
  • Page 15 PURITY & CONVERGENCE ADJUSTMENT Caution: 5. Reconnect the internal degaussing coil. Convergence and Purity have been factory aligned. Do not attempt to tamper with these alignments. 6. Position the beam bender locking rings at the 9 o'clock However, the effects of adjacent receiver components, or position and the other three pairs of tabs (2,4 and 6 pole replacement of picture tube or deflection yoke may require the magnets) at the 12 o'clock position.
  • Page 16 1.ADJUST YOKE Z-AXIS FIRST 2 .ADJUST BEAM BENDER 2 POLE TO GET EQUAL BLUE MAGNET TO GET FOUR EQUAL COLOR CIRCLES COLOR CIRCLES MAGNETS 8. Referring to above, perform the following two steps: 6. Reconnect the internal degaussing coil and apply AC power. a.
  • Page 17 ROTATION DIRECTION RING MOVEMENT OF RED OF BOTH TABS PAIRS AND BLUE BEAMS OPPOSITE 4 POLE SAME OPPOSITE 6 POLE SAME UP/DOWN ROCKING OF THE YOKE LEFT/RIGHT ROCKING OF THE YOKE  UP/DOWN ROCKING OF THE YOKE  LEET/RIGHT ROCKING OF THE YOKE CAUSES OPPOSITE ROTATION OF RED CAUSES OPPOSITE SIZE CHANGE OF THE CAUSES OPPOSITE ROTATION OF RED...
  • Page 18 EXPLODED VIEW : 14/20F60K...
  • Page 19 EXPLODED VIEW : 14/20F60K - 18 -...
  • Page 20 The components identified by mark critical for safety. EXPLODED VIEW PARTS LIST Replace only with part number specified. PART NO LOCA. NO DESCRIPTIONS 14" 20" 343-B52A SUPPORTER,PWB 2055-00744N 2426GCA40CP CPT SET 6400VA0018D 120-C93G SPEAKER 150-D02W 150-D02Y COIL,DEGAUSSING 153-113V 6150Z-1014A 170-A01A 170-A01D CPT EARTH 6410VEH001B...
  • Page 21 EXPLODED VIEW : 14/20S10KE/11KE - 20 -...
  • Page 22 The components identified by mark critical for safety. EXPLODED VIEW PARTS LIST Replace only with part number specified. PART NO LOCA. NO DESCRIPTIONS 14" 20" 343-B52A SUPPORTER,PWB 2055-00744L 2426GCA40CP CPT SET 2055-00744K CPT SET 6400VA0001A 120-C67G SPEAKER 4810V00071B BRACKET,SPEAKER COVER 150-D02W 150-D02Y COIL,DEGAUSSING...
  • Page 23 EXPLODED VIEW : 14/21K40KE/KEX 94 3 40 0 N      A    T     U    R   A  L  A  L G  O  R  I   T   H  M   E  XE - 22 -...
  • Page 24 The components identified by mark critical for safety. EXPLODED VIEW PARTS LIST Replace only with part number specified. PART NO LOCA. NO DESCRIPTIONS 14" 21" 2055-00744L CPT SET 2055-00744P 2426GDA80CC CPT SET *TELESTAR 6400VA0021A 6400VA0021A SPEAKER,8 OHM 150-D02B 150-D02X COIL,DEGAUSSING 153-113V DY,DCAD2-14SNAB 170-A01A...
  • Page 25 EXPLODED VIEW : 20D70K - 24 -...
  • Page 26 The components identified by mark critical for safety. EXPLODED VIEW PARTS LIST Replace only with part number specified. LOCA. NO PART NO DESCRIPTIONS 343-B52A SUPPORTER,PCB 2426GCA40CP CPT SET A48QAD220X 00A7ND 6400VA0021B SPEAKER,GENERAL BUKDOO 16 OHM 3 150-D02Y COIL,DEGAUSSING CU 20Ó 60TURN 15 OHM 6150Z-1014A DY DC20PLUB2 170-A01D...
  • Page 27 EXPLODED VIEW : 20F80K - 26 -...
  • Page 28 The components identified by mark critical for safety. EXPLODED VIEW PARTS LIST Replace only with part number specified. LOCA. NO PART NO DESCRIPTIONS 343-B52A SUPPORTER,PCB 2426VDC0024 CPT SET 2426GCA40DC A48QAD220X 03M8ND 2426GCA40CP CPT SET A48QAD220X 00A7ND * H.POINT 2055-01221C CPT SET A48QAD220X 00A7ND * TELESTAR 120-C93G SPEAKER,GENERAL C091P06K1459 8 OHM 5 150-D02Y...
  • Page 29 EXPLODED VIEW : 14/20J50K - 28 -...
  • Page 30 The components identified by mark critical for safety. EXPLODED VIEW PARTS LIST Replace only with part number specified. PART NO LOCA. NO DESCRIPTIONS 14" 20" 343-B52A SUPPORTER,PWB 2055-00744N 2426GCA40CP CPT SET 2055-00744L CPT SET 2426VDC0003 CPT SET 2055-00744M 2426GCA40CP CPT SET 6400VA0018D 120-C93G SPEAKER...
  • Page 31 EXPLODED VIEW : 14/20/21K51/53KE - 30 -...
  • Page 32 The components identified by mark critical for safety. EXPLODED VIEW PARTS LIST Replace only with part number specified. PART NO LOCA. NO DESCRIPTIONS 14Ó 20Ó 21Ó 343-B52A 343-B52A SUPPORTER,PCB 2055-00744L 2426GCA40CP 2426VSD0018 CPT SET 2055-00744K CPT SET 2055-00744M CPT SET 6400VA0019D 6400VA0001A 6400VA0001A...
  • Page 33 The components identified by mark critical for safety. REPLACEMENT PARTS LIST Replace only with part number specified. LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION D815 0DD420000BB DIODE,D4L20U SHINDENGEN D816 0DR060009AA DIODE,RECTIFIER TVR06J 0ICTMPH005C IC01 IC,TDA9381PS/N2/3I 0838 64P ARAB OSD D824 0DD420000BB DIODE,D4L20U SHINDENGEN...
  • Page 34 The components identified by mark For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the charactors at 2nd and 3rd CQ : Polyestor RS : Metal Oxide Film critical for safety. digit in the P/No. means as CE : Electrolytic RN : Metal Film Replace only with part number specified.
  • Page 35 CONNECTOR C819 181-091Y 2KV R 681K TP7.5 Ò 181-091W 2KV R 471K TP7.5 P01A 366-921B CONNECTOR,2.5MM 3P GIL-G LG CABLE . C820 0CE227DP650 220UF STD 160V M FM7.5 BULK P301 366-043K CONNECTOR,PLUG(4P) C821 181-120N 1000PF 4KV M E FMTW LEAD4.5...
  • Page 36 The components identified by mark For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the charactors at 2nd and 3rd CQ : Polyestor RS : Metal Oxide Film critical for safety. digit in the P/No. means as CE : Electrolytic RN : Metal Film Replace only with part number specified.
  • Page 37 ACCESSORIES R670 0RD2000F609 200 OHM 1/6 W 5.00% TA52 R801 0RD2701F609 2.7K OHM 1/6 W 5.00% TA52 3828VA0270F MANUAL,OWNERS LG AR/EN 061D/G TX R802 0RD2201F609 2.2K OHM 1/6 W 5.00% TA52 6710V00061G REMOTE CONTROLLERMC-019A RT-21FA30 R803 0RD1001F609 1K OHM 1/6 W 5.00% TA52...
  • Page 38 P/NO:3854VA0083B-S 2001.04.20...
  • Page 39 SVC. SHEET : 3854VA0083A-S SVC. SHE...