LG KE-14P2 Series Service Manual
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LG KE-14P2 Series Service Manual

LG KE-14P2 Series Service Manual

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LG
KE-14P2**
MODEL
SERVICE MANUAL

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  • Page 1 KE-14P2** MODEL SERVICE MANUAL...
  • Page 2 ADJUSTMENT INSTRUCTIONS Notes; (Adjustments must be performed by the following procedures) 1. It is recommended that an isolation transformer be used when servicing this chassis to prevent electric shock and damage to test equipment. P2 POST ADJUST 2. The ac line voltage must be maintained at 230 vac, +- 10%, 50/60 hz.
  • Page 3 7. White Balance Adjustment 1) Input a signal which lower half is black and upper half is white. 2) Set the picture at standard on. Adjust Period 3) Press SVC Key on the Service Remote Controller to get into Service mode. 4) Press PR +/- Key to select BG, RG.
  • Page 4 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 5 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 6 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 7 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 8 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 9 EXPLODED VIEW:14P2 P801...
  • Page 10 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 6400VA0019B SPEAKER,G9050402(C93H)8 OHM 4810V00205A BRACKET,SPK 150-D02B COIL,DEGAUSSING,CU 14” 42T 5.7 OHM 153-113V DY,DCAD2-14SNAB 170-A01E LEAD SET,CPT EARTH...
  • Page 11 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 DRUM(CIRC) ASSY D33-2CH SP/EP (5M2) 6723R-D101B 4261R-0012B ARM ASSY L/D MOTOR ARM ASSY CLEANER 4261R-0015A L/D MOTOR 4811R-0019A BRACKET ASSY 4470R-0028A...
  • Page 12 LOCA.NO PART NO(GS) DESCRIPTION SPECIFICATION REMARKS 4470R-0027A GEAR SPRING 4970R-0046A 4510R-0015A LEVER 3300R-0157A PLATE SLIDER LEVER TENSION 4510R-0022A 3040R-0018A BASE TENSION(D-33K) 3301R-0029A PLATE ASSY 4810R-0056A BRACKET SIDE(L) 4930R-0096A HOLDER SIDE(L) GUIDE 4974R-0019A 4930R-0098A HOLDER 4930R-0100A HOLDER SIDE(R) STOPPER(R) 4510R-0024A LEVER 4810R-0055A BRACKET SIDE(R)
  • Page 13 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 D506 0DD414809ED DIODE,1N4148 TA D507 0DD414809ED DIODE,1N4148 TA IC01 0IGS899602A IC,LG8996-02A(GMS3977R-AA70F) 100 D509 0DD414809ED DIODE,1N4148 TA “...
  • Page 14 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 15 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 16 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 17 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 18 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 19 SW14 140-315C SWITCH,TACT 4LEAD EVQPB905X 3828VA0190E MANUAL,OWNERS UK/WTY LG EN SW804 6600VM1001A SWITCH,PUSH SDKLA1 250V 5A 3828VA0190Q MANUAL,OWNERS FS LG FR 032C/E 3828VA0190S MANUAL,OWNERS ES LG SP/PO FILTER & CRYSTAL 6710V00032C REMOTE CONTROLLER W/O TXT FILTER(CIRC),SFSH5.5MCB-TF21 REMOTE CONTROLLER W/TXT F100...
  • Page 20 BLOCK DIAGRAM...
  • Page 21 VCD BLOCK DIAGRAM...
  • Page 22 VIDEO/AUDIO BLOCK DIAGRAM...
  • Page 23 P/No. : 3854VA0060B(2/2) Date : 2000.4.6...
  • Page 24 CIRCUIT DIAGRAM OF MV-995B P/No. : 3854VA0060B(1/2) Date : 2000.4.6 PB.V PB.A REC.V REC.A...
  • Page 25 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 26 PRINTED CIRCUIT BOARD MAIN...
  • Page 27 POWER...
  • Page 28 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 29: Table Of Contents

    SECTION 4 MECHANISM CONTENTS DECK MECHANISM PARTS DECK MECHANISM ADJUSTMENT LOCATIONS • Tools and Fixtures for Service.....4-14 • Top View...........4-1 1. Mechanism and Mode Switch Alignment • Bottom View ..........4-1 Check ............4-15 2. Deck Preparation for Adjustment ....4-17 DECK MECHANISM 3.

  • Page 30: Deck Mechanism Parts Locations

    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 31 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 32: 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 33: Plate Assembly Top

    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 34 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 35: Arm Assembly Cleaner

    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 36: Brake Assembly S

    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 37: Support Cst

    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 38: Belt Capstan/Motor Capstan

    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 39: Bracket Assembly Jog

    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 40: Brake Assembly Capstan

    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 41: Gear Sector

    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 42: Gear Assembly P3/Gear Assembly P2

    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 43 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 44: Deck 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 45 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 46: 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 47: 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 48: Audio/Control (A/C) Head Adjustment

    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 49: Precise Adjustment(Azimuth Adjustment)

    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 50: Adjustment After Replacing Drum Assembly (Video Heads)

    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 51: 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 52 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 53: Required Maintenance

    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 54: Greasing

    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 55: 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 56 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 57 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 58: 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 59 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 60: Exploded Views

    EXPLODED VIEWS 1. Front Loading Mechanism Section 4-31...

  • Page 61: Moving Mechanism Section (1)

    EXPLODED VIEWS 2. Moving Mechanism Section(1) 4-32...

  • Page 62: Moving Mechanism Section (2)

    EXPLODED VIEWS 3. Moving Mechanism Section(2)

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