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LG KB-14P2B Service Manual

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TVCR
SERVICE MANUAL
CHASSIS : MV-995B
MODEL : KB/KE/KL/KF-14P2B/G/P/S
MODEL :
MODEL :
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
KB/KE/KL/KF-14P2BX/GX/PX/SX
KB/KE/KL/KF-20/21P30X
website:http://biz.LGservice.com
e-mail:http://www.LGEservice.com/techsup.html

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  • Page 1 website:http://biz.LGservice.com e-mail:http://www.LGEservice.com/techsup.html TVCR SERVICE MANUAL CHASSIS : MV-995B MODEL : KB/KE/KL/KF-14P2B/G/P/S MODEL : KB/KE/KL/KF-14P2BX/GX/PX/SX MODEL : KB/KE/KL/KF-20/21P30X CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
  • Page 2 SECTION 1 SUMMARY TVCR SERVICE MANUAL CONTENT SPECIFICATION ..........1-2 SAFETY INSTRUCTIONS ......1-3 SERVICING PRECAUTIONS ....... 1-4 DESCRIPTION OF CONTROLS ....1-6 CHASSIS : MV-995B MODEL : KB/KE/KL/KF-14P2B/G/P/S MODEL : KB/KE/KL/KF-14P2BX/GX/PX/SX MODEL : KB/KE/KL/KF-20/21P30X...

  • Page 3: Specifications

    SPECIFICATIONS Video Audio General ABBREVIA TIONS S t e r...

  • Page 4: Safety Precautions

    SAFETY PRECAUTIONS IMPORT ANT SAFETY NOTICE General Guidance Before returning the receiver to the customer, lsola Leakage Current Cold Check(Antenna Cold Check) Leakage Current Hot Check Do not use a line Isolation Transformer during this check. X-RAY Radiation Warning: Leakage Current Hot Check circuit AC Volt-meter Good Earth Ground such as WATER PIPE,...

  • Page 5: Servicing Precautions

    SERVICING PRECAUTIONS CAUTION: B SAFETY PRECAUTIONS NOTE: If unforeseen circumstances create conflict between the following servicing precautions and any of the safety precautions on page 3 of this publication, always follow the safety precautions. Remember: Safety First. General Servicing Precautions .
  • Page 6 Removal/Replacement CAUTION: W CAUTION: M IC Remove/Replacement Circuit Board Foil Repair Removal At IC Connections Replacement "Small-Signal" Discrete Transistor Removal/Replacement At Other Connections Power Output, Transistor Device Removal/Replacement CAUTION: B Diode Removal/Replacement Fuse and Conventional Resistor...

  • Page 7: Description Of Controls

    DESCRIPTION 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 batteries.

  • Page 8: Battery Installation

    17. EJECT ejects the tape. 18. TV/AV selects a TV or AV mode. 19. MENU selects a menu. 20. OK accepts your selection or displays the current mode. EJECT 21. FF (FAST FORWARD/CUE) winds the tape forward at high speed in the stop mode. fast forward playback.

  • Page 9: Ff (Fast Forward/Cue)

    Front panel 15 16 17 15 16 17 ON/OFF ON/OFF VIDEO- IN -AUDIO TAPE-IN TMER REC REC/ITR REW/ PLAY P/STILL STOP/EJECT MENU VIDEO- IN -AUDIO P/STILL STOP/EJECT MENU STAND-BY PLAY REC/iTR REW/ STAND-BY TAPE-IN TIMER REC 9 10 11 12 9 10 11 12 AUDIO VIDEO...
  • Page 10 SECTION 2 DISASSEMBLY PART TVCR SERVICE MANUAL CONTENT EXPLODED VIEW ..........2-2 EXPLODED VIEW PARTS LIST ....2-3 DISASSEMBLY INSTRUCTIONS....2-6 CHASSIS : MV-995B MODEL : KB/KE/KL/KF-14P2B/G/P/S MODEL : KB/KE/KL/KF-14P2BX/GX/PX/SX MODEL : KB/KE/KL/KF-20/21P30X...
  • Page 11 EXPLODED VIEW:14P2...
  • Page 12 The components identified by mark critical for safety. EXPLODED VIEW PARTS LIST Replace only with part number specified. LOCA. NO PART NO DESCRIPTIONS 2055-00744L CPT SET A34KPU02XX 00N7ND 2055-00744K CPT SET A34KPU02XX 00L7ND * MOS-BWT 2055-00744M CPT SET A34KPU02XX 00P7ND * NAGHI 2055-00745J CPT SET A34KPU02XX 00S7ND * LGEAP 6400VA0019B...
  • Page 13 EXPLODED VIEW:20/21P30X P801...
  • Page 14 The components identified by mark critical for safety. EXPLODED VIEW PARTS LIST Replace only with part number specified. PART NO LOCA. NO DESCRIPTIONS 20” 21” 2055-01221L 2055-01221K 2424GDA80AV CPT *MOS-BWT 2055-01221S 2424GDA80AB CPT *LGESW ,A.E.C,LGEGF 2055-01221Q 2426GDA80AG CPT *LGEAP 120-D44D 120-D44D SPEAKER,16OHM 3W/5 150-D02M...

  • Page 15: Disassembly Instructions

    DISASSEMBLY INSTRUCTIONS 1. Back Cover Removal 5. CPT REMOV AL 2. Main 2 PCB Removal PICTURE TUBE HANDLING CAUTION 3. Main Chassis Removal 4. Speaker Assembly Removal MODEL:14P2 Speaker Remove Board Screws Side AV Main 2 Main chassis MODEL:20/21P30X Remove Board Screws Side AV...

  • Page 16: Table Of Contents

    SECTION 3 ELECTRICAL PART TVCR SERVICE MANUAL CONTENT PURITY & CONVERGENCE ADJUSTMENT ..3-2 ADJUSTMENT INSTRUCTIONS ....3-5 BLOCK DIAGRAM ..........3-7 WIRING DIAGRAM ........3-10 TROUBLESHOOTING CHARTS ....3-11 COMPONENT LOCATION GUIDE .....3-16 PRINTED CIRCUIT BOARDS .......3-17 CHASSIS : MV-995B MODEL : KB/KE/KL/KF-14P2B/G/P/S MODEL : KB/KE/KL/KF-14P2BX/GX/PX/SX MODEL :...

  • Page 17: Purity & Convergence Adjustment

    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 18 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 19 ROTATION DIRECTION RING MOVEMENT OF RED OF BOTH TABS PAIRS AND BLUE BEAMS OPPOSITE POLE SAME OPPOSITE 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 CAUSES OPPOSITE SIZE CHANGE OF...

  • Page 20: Adjustment Instructions

    ADJUSTMENT INSTRUCTIONS Notes; P2 POST ADJUST P3 POST ADJUST < 1. DECK ADJUSTMENT 1-4. X-Distance Adjustment 1. Deck Transit System Adjustment 1-1. Necessary Instruments CAUTION: 1-5. Audio Level Check and Adjustment 1-2.Preliminary Steps PCB. Trigger on this channel. AZIMUTH Adjust waveform SCREW X-DISTANCE DRUM...
  • Page 21 7. White Balance Adjustment Adjust Period <Adjust Waveform> ¡ CAUTION: 8 Deflection Data Adjustment 3. Focus Voltage Adjustment 5) Vertical SLOPE adjustment ¤ 4. Screen Adjustment ¤Ł 6) Vertical amplitude adjustment ¤ ¤Ł 7) Vertical Shift Adjustment 140V ¤ ¤Ł Black Level (DC) 8) Horizontal Shift Adjustment ¤...

  • Page 22: Block Diagram

    BLOCK DIAGRAM...
  • Page 23 VCD BLOCK DIAGRAM...
  • Page 24 VIDEO/AUDIO BLOCK DIAGRAM...

  • Page 25: Wiring Diagram

    WIRING DIAGRAM CPT PWB P802 P602 P804 SMPS PWB P805 P708 P708 P602 P901A P702 P100 P804 P703 P103 P102 P805 P708 P805 TOUCH 3-10...

  • Page 26: Trouble Shooting

    TROUBLE SHOOTING NO POWER : NO STAND-BY Check if the Replace the Fuse Fuse is O.K.? Is there voltage at Check/Replace pin 9 of T801? DB801, R801, C806. Check/Replace Is there about 6.1V D806, Q801, R807, ZD801, C814, at pin 9 of IC801? IC801.
  • Page 27 NO POWER : NO MONITOR ON Check the Go to NO POWER (NO ST-BY) NO POWER(NO ST-BY) BLOCK BLOCK Is there about Check the pin 10 of P804 ; "HIGH" 6V at pin 9 of P804? ¡ Check/Replace D851, L851, Is there about 115V C860, IC851.
  • Page 28 NO RASTER Is there about 115V Go to NO POWER BLOCK at pin 3 of T701? ¡ Check/Replace F852, D850, Is there about 8V R858, IC853, C863. at pin 6 of P805? ¡ Check the 8V LINE of VCD BOARD ¡...
  • Page 29 V. Deflection ERROR Does the V-A, V-B Check the vertical part of VCD signal appear at pin 4, 7 of P805? Is there about Check/Replace FR702, D702, C704, 15V at pin 4 of L731 IC701? Is there about Check;/Replace FR701, D701, C708, 44V at pin 8 of IC701? C734.
  • Page 30 NO SOUND Is there about Check/Replace FR854, D855, IC601. 25V at pin 5 of IC601? Does the sound Check the Audio source line of signal appear at pin 9 of P805? ¡ Check the voltage at collector of Does the sound signal appear at pin 4 Q601.

  • Page 31: Component Location Guide

    COMPONENT LOCATION GUIDE <MAIN> C01 ..B2 C122 ..E2 C354..C2 C07T ..F4 JP186 ..G5 Q111..E2 R70 ..A3 R215 ..F4 R509 ..F3 SW08..A4 TP86 ..E5 C03..C4 C123 ..E2 C355..C3 C08S..E5 L01..B5 Q112 ..F1 R71 ..A3 R218 ..F4 R510 ..F3 SW11..A2 TP87 ..E5 C04 ..B4 C124 ..E2 C356..C2...

  • Page 32: Printed Circuit Boards

    PRINTED CIRCUIT BOARD MAIN 3-17...
  • Page 33 POWER 3-18...
  • Page 34 COMPONENT LOCATION GUIDE <SMPS> C601..C4 C866..C3 F852..E2 J835..E5 P708..C5 R782..E5 R07J..B3 C602..C4 C867..C3 F853..E2 J836..B3 P804..C4 R783..F5 R21J..A2 C603..C4 C868..D2 F801A..C1 J837..D4 P805..C5 R784..E5 R22J..B2 C604..C4 C869..D2 F801B..C1 J838..D5 P806..B1 R785..E4 R23J..B1 C605..D4 C870..B2 FB782..F5 J839..D5 P901..A5 R786..E4 R24J..B1 C606..C4 C871..C3 FB801..G2 J840..C3...
  • Page 35 SECTION 4 MECHANISM PART TVCR SERVICE MANUAL CONTENT Deck Mechanism Disassembly ....4-1 Mechanism Adjustment ......4-15 Maintenance/Inspection Procedure ..4-22 Mechanism Troubleshooting Guide ..4-26 Exploded Views ..........4-31 CHASSIS : MV-995B MODEL : KB/KE/KL/KF-14P2B/G/P/S MODEL : KB/KE/KL/KF-14P2BX/GX/PX/SX MODEL : KB/KE/KL/KF-20/21P30X...

  • Page 36: Top View

    DECK MECHANISM PARTS LOCATIONS (FOR NORMAL MODELS) • Top View Pracedure Fig- Part Fixing Type Starting Drum Assembly 3 Screws , Cap FPC A-1 Plate Assembly Top Two Hooks Bracket Side 'L' 5 Holder Assembly CST Chassis Hole 6 Bracket Assembly Door Guide CST 2 Hooks...
  • Page 37 DECK MECHANISM PARTS LOCATIONS (FOR JOG SHUTTLE MODELS) • Top View Pracedure Fig- Part Fixing Type Starting Drum Assembly 3 Screws , Cap FPC A-1 Plate Assembly Top Two Hooks Bracket Side 'L' 5 Holder Assembly CST Chassis Hole 6 Bracket Assembly Door Guide CST 2 Hooks...

  • Page 38: Deck Mechanism Disassembly

    DECK MECHANISM DISASSEMBLY (S2) Stator (S2) (S3) Drum Motor (S3) Rotor Drum Sub Assembly (Fig. A-1-1) Drum FPC (S1) (For Jog Shuttle Models) (S1) (S1) Optional Parts Holder FPC Holder FPC or Holder FPC (only for 2HD Models) (only for 4HD-Mono Models) (only for 4HD-Hi-Fi Models) Cap FPC (Fig.
  • Page 39 DECK MECHANISM DISASSEMBLY Plate Assembly Top (Fig. A-2-1) Holder Assembly CST Lever Stopper(R) (Fig. A-2-2) Arm Assembly F/L (Fig. A-2-6) Arm F/L Lever Assembly S/W (Fig. A-2-7) (S4) (H5) Bracket Side (L) (S4) (Fig. A-2-4) Groove Gear Rack F/L Groove Bracket (For Jog Shuttle Models) Assembly Door...
  • Page 40 DECK MECHANISM DISASSEMBLY 2. Plate Assembly Top (Fig. A-2-1) 1) Unhook the (H1) and separate the Left Side. 2) Unhook the (H2) and lift up the Plate Assembly Top. NOTE (1) When reassembling, confirm (A),(B) Part of the Plate (H4) Assembly Top is inserted to the (L),(R) Grooves of the (H3) Bracket Side(L) and Bracket Assembly Door.
  • Page 41 DECK MECHANISM DISASSEMBLY Arm Assembly Cleaner (Fig. A-3-1) (S5) Base Assembly A/C Head ( H1) (Fig. A-3-3) (Fig. A-3-2) Head F/E (For Jog Shuttle Models) Fig. A-3 8. Arm Assembly Cleaner(Fig. A-3-1) NOTE 1) Break away the (A) part shown above Fig. A-3-1 from the (1) Place the Spring Lever S/W of the above (No.1) as Embossing of the Chassis in the clockwise direction and original position.
  • Page 42 DECK MECHANISM DISASSEMBLY Spring S Brake Brake Assembly S (Fig. A-4-1) Arm Assembly Tension Reel T Spring Tension (Fig. A-4-5) Band Assembly (Fig. A-4-3) Spring T Brake Tension Reel S Brake Assembly T (Fig. A-4-2) (Fig. A-4-4) (For Jog Shuttle Models) Fig.
  • Page 43 DECK MECHANISM DISASSEMBLY Opener Lid (Fig. A-5-3) Arm Assembly T/up (Fig. A-5-4) Assembly Pinch Base Assembly P4 (Fig. A-5-5) Support CST (Fig. A-5-1) (Fig. A-5-2) Fig. A-5 15. Support CST (Fig. A-5-1) NOTE 1) Break away the (A) part shown above Fig. A-5-1 from the (1) When reassembling, confirm the opener lid is placed on Embossing of the Chassis in the clockwise direction, and the Hook(H1) of the Arm Assembly T/UP as below figure.
  • Page 44 DECK MECHANISM DISASSEMBLY Belt Capstan (Fig. A-6-1) Motor Capstan Washer(W1) Clutch Assembly D33-K (Fig. A-6-3) (Fig. A-6-2) Washer(W2 ) Optional Parts Gear H-Up/D-K Gear Up/D-K Lever F/R (For Hi-Rewind Models) (For Normal Models) (Fig. A-6-4) Hook(H1) Spring Up/D Brake Assembly Capstan (For 4HD Models) (Fig.
  • Page 45 DECK MECHANISM DISASSEMBLY Brake Assembly Capstan Hole (A)+(B) Barke Assembly Capstan Gear Cam (H2) (For 4HD Models) Spring Capstan (Fig. A-7-4) Hole (A) Guide Rack F/L (H1) (S4) Barke Assembly Jog (S4) (For Jog Shuttle Models) (Fig. A-7-2) Gear Rack F/L (Fig.
  • Page 46 DECK MECHANISM DISASSEMBLY Washer (W1) Gear Drive (Fig. A-8-1) Gear Cam Hole (B) (Fig. A-8-2) Brake Assembly Capstan (For 4HD Models) Gear Connector Hole (A) (Fig. A-8-3) Gear Connector Hole (A')+(A) Hole (B') Hole (A') Chassis Bracket Assembly L/D Motor Hole (B')+(B) (Fig.
  • Page 47 DECK MECHANISM DISASSEMBLY Washer (W1) Gear Sector (S4) (Fig. A-9-1) Base Tension Plate Slider (Fig. A-9-2) (Fig. A-9-3) Lever Tension (Fig. A-9-4) (For Jog Shuttle Models) Fig. A-9 29. Gear Sector (Fig. A-9-1) NOTE 1) Remove the Washer(W1) and lift up the Gear Sector. 30.
  • Page 48 DECK MECHANISM DISASSEMBLY (Fig. A-10-1) Gear Assembly P3 Gear Assembly P3 Gear Assembly P2 (Fig. A-10-2) Gear Assembly P2 Chassis Optional Parts Base Assembly P2 Arm Assembly Idler Arm Assembly Idler Jog (Fig. A-10-4) (For Normal Models) For Jog Shuttle Models (Fig.
  • Page 49 DECK MECHANISM DISASSEMBLY • Tools and Fixfures for Service 3. Torque gauge 1. Cassette Torque meter 2. Alignment tape 600g.Cm ATG SRK-VHT-303(Not SVC part) Parts No NTSC: DTN-001 Parts No:D00-D002 Parts No: D00-D006 PAL:DTN-0002 4. Torque gauge adaptor 5. Post height adjusting driver 6.

  • Page 50: Mechanism Adjustment

    DECK MECHANISM ADJUSTMENT (FOR NORMAL MODELS) 1.Mechanism Alignment Position Check Purpose:To determine if the Mechanism is in the correct position, when a Tape is ejected. Test Conditions (Mechanism Test Equipment/ Fixture Check Point Condition) • Mechanism and Mode Switch Position •...

  • Page 51: Deck Mechanism Adjustment

    DECK MECHANISM ADJUSTMENT (FOR JOG SHUTTLE MODELS) 1.Mechanism Alignment Position Check Purpose:To determine if the Mechanism is in the correct position, when a Tape is ejected. Test Conditions (Mechanism Test Equipment/ Fixture Check Point Condition) • Mechanism and Mode Switch Position •...

  • Page 52: Checking Torque

    DECK MECHANISM ADJUSTMENT 2. Preparation for Adjustment (To set the Loading the Cassette without Tape. Cover the Holes of the End Sensors at the both sides of Deck Mechanism to the Loading state the Bracket Side(L) and Bracket Assembly Door to pre- without inserting a Cassette Tape).

  • Page 53: Guide Roller Height Adjustment

    DECK MECHANISM ADJUSTMENT 4.Guide Roller Height Adjustment Purpose: To regulate the Height of the Tape so that the Bottom of the Tape runs along the Tape Guide Line on the Lower Drum. 4-1. Preliminary Adjustment Test Equipment/ Fixture Test Conditions (Mechanism Condition) Adjustment Point •...
  • Page 54 DECK MECHANISM ADJUSTMENT 5. Audio/Control (A/C) Head Adjustment Purpose: To insure that the Tape passes accurately over the Audio and Control Tracks in exact Alignment in both the Record and Playback Modes. 5-1. Preliminary Adjustment (Height and Tilt Adjustment) Perform the Preliminary Adjustment, when there is no Audio Output Signal with the Alignment Tape. Test Equipment/ Fixture Test Conditions (Mechanism Condition) Adjustment Point...
  • Page 55 DECK MECHANISM ADJUSTMENT 5-2. Confirm that the Tape passes smoothly slowly turn the Tilt Adjustment Screw(C) in the Counterclockwise direction. between the Take-up Guide and Pinch Roller(using a Mirror or the naked eye). After completing Step 5-1.(Preliminary Adjustment), NOTE: check that the Tape passes around the Take-up Guide and Pinch Roller without Folding or Curling at the Top or Check the RF Envelope after adjusting the A/C Head, if Bottom.

  • Page 56: Check The Tape Travel After Reassembling Deck Assembly

    DECK MECHANISM ADJUSTMENT 7. Adjustment after Replacing Drum Assembly (Video Heads) Purpose: To correct for shift in the Roller Guide and X value after replacing the Drum. Test Conditions Test Equipment/ Fixture Connection Point Adjustment Points (Mechanism Condition) • CH-1: PB RF Envelope •...

  • Page 57: Maintenance/Inspection Procedure

    MAINTENANCE/INSPECTION PROCEDURE (FOR NORMAL MODELS) 1 Check before starting repairs The following faults can be remedied by cleaning and oiling. Check the needed lubrication and the conditions of cleanli- ness in the unit. Check with the customer to find out how often the unit is used, and then determine that the unit is ready for inspection and maintenance.

  • Page 58: Check Before Starting Repairs

    MAINTENANCE/INSPECTION PROCEDURE (FOR JOG SHUTTLE MODELS) 1 Check before starting repairs The following faults can be remedied by cleaning and oiling. Check the needed lubrication and the conditions of cleanli- ness in the unit. Check with the customer to find out how often the unit is used, and then determine that the unit is ready for inspection and maintenance.

  • Page 59: Supplies Required For Inspection And

    MAINTENANCE/INSPECTION PROCEDURE 4. Supplies Required for Inspection and 2. Required Maintenance Maintence The recording density of a VCR(VCP) is much higher than that of an audio tape recorder. VCR(VCP) components must (1) Grease : Kanto G-311G (Blue) or equivalent be very precise, at tolerances of 1/1000mm, to ensure com- (2) Isopropyl Alcohol or equivalent patiblity with other VCRs.
  • Page 60 MAINTENANCE/INSPECTION PROCEDURE (2) Periodic greasing 5-2) Greasing Grease specified locations every 5,000 hours. (1) Greasing guidelines Apply grease, with a cleaning patch. Do not use excess 1) Loading Path Inside & Top side 5) Lever Tension Groove grease. It may come into contact with the tape transport 2) Shaft 6) Clutch Assembly D33 Shaft or drive system.

  • Page 61: Mechanism Troubleshooting Guide

    MECHANISM TROUBLESHOOTING GUIDE 1.Deck Mechanism Auto REW doesn't work. Is the output of END sensor of supply side "H"? “H”: more than 3.5V “L”: less than 0.7V~1V Is the Vcc. voltage of End Check the syscon power. sensor 5V? Replace End sensor. Is the voltage across IR LED Replace LED.
  • Page 62 MECHANISM TROUBLESHOOTING GUIDE AUTO STOP. (PLAY/CUE/REV) Check aligment positions (page 4- 14) Check spring Pinch. In Play/Cue/Rev is the pinch roller in contact with the capstan Is the output of DFG, DPG OK? Replace Drum Motor. shaft. Are there T/up and supply reel Check Servo, Syscon.
  • Page 63 MECHANISM TROUBLESHOOTING GUIDE In PB mode Tape Presence not sensed. Is the Pinch Roller attached Check Alignment positions to the Capstan Motor Shaft? (page 4-14) Does the T/Up Is the Belt ok? Replace the Belt. Reel turn? Check the clutch and the Idler Does the Capstan Motor turn? Assembly.

  • Page 64: Front Loading Mechanism

    MECHANISM TROUBLESHOOTING GUIDE 2. Front Loading Mechanism Cassette cannot be inserted. Is the Lever Switch Spring Replace or add the Does the Lever Switch work? damaged or omitted? Lever Switch Spring. Does the F/L switch work Replace F/L Switch. normally? Is the Vcc of Main P.C.Board Check syscon circuit.
  • Page 65 MECHANISM TROUBLESHOOTING GUIDE Cassette will not load. Does the CST insert? Does the opener Lid work? Replace the Opener Lid. Does the Gear Rack F/L work? Replace the Rear Rack F/L. Does the Opener Door work? Does the Arm Assembly F/L work? Is the opener Door assembled correctly? Does the L/D Motor work? Replace the Arm Assembly F/L.

  • Page 66: Exploded Views

    EXPLODED VIEWS 1. Front Loading Mechanism Section 4-31...
  • Page 67 EXPLODED VIEWS 2. Moving Mechanism Section(1) 4-32...
  • Page 68 EXPLODED VIEWS 3. Moving Mechanism Section(2) 4-33...
  • Page 69 SECTION 5 TVCR SERVICE MANUAL CONTENT MECHANICAL PARTS ........5-2 ELECTRICAL PARTS ........5-4 CHASSIS : MV-995B MODEL : KB/KE/KL/KF-14P2B/G/P/S MODEL : KB/KE/KL/KF-14P2BX/GX/PX/SX MODEL : KB/KE/KL/KF-20/21P30X...

  • Page 70: Replacement Parts List

    REPLACEMENT PARTS LIST 1. Mechanical Section NSP : Not Service Part LOCA.NO PART NO(GS) DESCRIPTION SPECIFICATION REMARKS ASSEMBLY PARTS SECTION 6721R-0105B DECK ASSY 6723R-D101B DRUM(CIRC) ASSY D33-2CH SP/EP (5M2) L/D MOTOR 4261R-0012B ARM ASSY 4261R-0015A ARM ASSY CLEANER BRACKET ASSY L/D MOTOR 4811R-0019A 4470R-0028A...
  • Page 71 LOCA.NO PART NO(GS) DESCRIPTION SPECIFICATION REMARKS 4470R-0027A GEAR 4970R-0046A SPRING LEVER 4510R-0015A 3300R-0157A PLATE SLIDER 4510R-0022A LEVER TENSION TENSION(D-33K) 3040R-0018A BASE 3301R-0029A PLATE ASSY BRACKET SIDE(L) 4810R-0056A 4930R-0096A HOLDER SIDE(L) 4974R-0019A GUIDE HOLDER 4930R-0098A 4930R-0100A HOLDER SIDE(R) 4510R-0024A LEVER STOPPER(R) SIDE(R) 4810R-0055A BRACKET...
  • Page 72 The components identified by mark REPLACEMENT PARTS LIST critical for safety. Replace only with part number specified. LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION DIODE,1N4148 TA D506 0DD414809ED D507 0DD414809ED DIODE,1N4148 TA 0IGS899602A IC,LG8996-02A(GMS3977R-AA70F) 100 IC01 D509 0DD414809ED DIODE,1N4148 TA 0IGS899603A...
  • Page 73 For Capacitor & Resistors, the CC, CX, CK, CN : Ceramic RD : Carbon Film The components identified by mark charactors at 2nd and 3rd digit CQ : Polyestor RS : Metal Oxide Film critical for safety. in the P/No. means as follows; CE : Electrolytic RN : Metal Film Replace only with part number specified.
  • Page 74 The components identified by mark For Capacitor & Resistors, the CC, CX, CK, CN : Ceramic RD : Carbon Film charactors at 2nd and 3rd digit CQ : Polyestor RS : Metal Oxide Film critical for safety. in the P/No. means as follows; CE : Electrolytic RN : Metal Film Replace only with part number specified.
  • Page 75 For Capacitor & Resistors, the CC, CX, CK, CN : Ceramic RD : Carbon Film The components identified by mark charactors at 2nd and 3rd digit CQ : Polyestor RS : Metal Oxide Film critical for safety. in the P/No. means as follows; CE : Electrolytic RN : Metal Film Replace only with part number specified.
  • Page 76 The components identified by mark For Capacitor & Resistors, the CC, CX, CK, CN : Ceramic RD : Carbon Film charactors at 2nd and 3rd digit CQ : Polyestor RS : Metal Oxide Film critical for safety. in the P/No. means as follows; CE : Electrolytic RN : Metal Film Replace only with part number specified.
  • Page 77 For Capacitor & Resistors, the CC, CX, CK, CN : Ceramic RD : Carbon Film The components identified by mark charactors at 2nd and 3rd digit CQ : Polyestor RS : Metal Oxide Film critical for safety. in the P/No. means as follows; CE : Electrolytic RN : Metal Film Replace only with part number specified.
  • Page 78 SWITCH,TACT 4LEAD EVQPC605K 3828VA0190C MANUAL,OWNERS DG LG GE/FR/N SW804 6600VM1001A 3828VA0190E SWITCH,PUSH SDKLA1 250V 5A MANUAL,OWNERS UK/WTY LG EN 3828VA0190Q MANUAL,OWNERS FS LG FR 032C/E FILTER & CRYSTAL 3828VA0190S MANUAL,OWNERS ES LG SP/PO F100 166-B02C FILTER(CIRC),SFSH5.5MCB-TF21 6710V00032C REMOTE CONTROLLER W/O TXT...
  • Page 79 CIRCUIT DIAGRAM OF MV-995B P/No. : 3854VA0070A-S Date : 2001.02.10 PB.V PB.A REC.V REC.A...
  • Page 80 P/No. : 3854VA0060B(2/2) Date : 2000.4.6...
  • Page 81 Apr.,2001 P/NO : 3828VD0067C Printed in Korea...

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