Magnavox 20MC4304/17 Service Manual
Hide thumbs Also See for 20MC4304/17:

Advertisement

Color TV with Built-In VCR/DVD Player
Service
Service
Service
Service Manual
Contents
Chapter
Sec. 1: Adjustment Procedures
Schematic Diagrams and CBA's
Exploded Views
Mechanical and Electrical Parts Lists
Sec. 2: Standard Maintenance
Mechanism Alignment Procedures
Disassembly / Assembly of Mechanism
Deck Exploded Views
Deck Parts List
This service manual is for 20MC4304/17
Third Generation model, which is different
from the previous generation 20MC4304/17
models.
For Third Generation model, the serial
number begins with DD2Bxxxxxxxxxx.
Refer to the rating label illustration at right.
c Copyright 2005 Philips Consumer Electronics B.V. Eindhoven, The Netherlands.
All rights reserved. No part of this publication may be reproduced, stored in a retrieval
system or transmitted, in any form or by any means, electronic, mechanical, photocopying,
or otherwise without the prior permission of Philips.
Published by FU-KC 0517 Service AV Systems
Survey of versions:
/17
NTSC
Printed in The Netherlands
20MC4304/
CLASS 1 LASER PRODUCT
KLASSE 1 LASER PRODUKT
KLASS 1 LASER APPARAT
CLASSE 1 PRODUIT LASER
Rating label
MARCH 2005 V x x x x
D D 2 B x x x x x x x x x x
Serial number
Subject to modification
17
EN 3139 785 31060

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the 20MC4304/17 and is the answer not in the manual?

Questions and answers

Summary of Contents for Magnavox 20MC4304/17

  • Page 1 Sec. 2: Standard Maintenance Mechanism Alignment Procedures Disassembly / Assembly of Mechanism Deck Exploded Views Deck Parts List This service manual is for 20MC4304/17 Rating label Third Generation model, which is different from the previous generation 20MC4304/17 models. MARCH 2005 V x x x x...
  • Page 2: Table Of Contents

    MAIN SECTION Color TV with Built-In VCR/DVD Player Sec. 1: Main Section I Adjustment Procedures I Schematic Diagrams and CBA’s I Exploded Views I Mechanical and Electrical Parts List TABLE OF CONTENTS LASER BEAM SAFETY PRECAUTIONS ........... . 1-1-1 IMPORTANT SAFETY PRECAUTIONS.
  • Page 3: Laser Beam Safety Precautions

    LASER BEAM SAFETY PRECAUTIONS This DVD player uses a pickup that emits a laser beam. Do not look directly at the laser beam coming from the pickup or allow it to strike against your skin. The laser beam is emitted from the location shown in the figure. When checking the laser diode, be sure to keep your eyes at least 30 cm away from the pickup lens when the diode is turned on.
  • Page 4: Important Safety Precautions

    IMPORTANT SAFETY PRECAUTIONS Prior to shipment from the factory, our products are strictly inspected for recognized product safety and electrical codes of the countries in which they are to be sold. However, in order to maintain such compliance, it is equally important to implement the following precautions when a set is being serviced.
  • Page 5 may be called “horizontal disable” or “hold regardless of the AC plug polarity. This chassis down.”) Read and apply the high voltage limits can be safety-serviced only with an isolation and, if the chassis is so equipped, the X- transformer inserted in the power line between radiation protection circuit specifications given the receiver and the AC power source, for both on instrument labels and in the Product Safety...
  • Page 6 Precautions during Servicing A. Parts identified by the # symbol are critical for safety. Replace only with part number specified. B. In addition to safety, other parts and assemblies are specified for conformance with regulations applying to spurious radiation. These must also be replaced only with specified replacements.
  • Page 7 Safety Check after Servicing Examine the area surrounding the repaired location for damage or deterioration. Observe that screws, parts and wires have been returned to original positions. Afterwards, perform the following tests and confirm the specified values in order to verify compliance with safety standards. 1.
  • Page 8: Standard Notes For Servicing

    STANDARD NOTES FOR SERVICING Circuit Board Indications Pb (Lead) Free Solder 1. The output pin of the 3 pin Regulator ICs is When soldering, be sure to use the Pb free solder. indicated as shown. Information about lead-free soldering Top View Bottom View Philips CE is producing lead-free sets from 1.1.2005 onwards.
  • Page 9 • Mix of lead-free solder alloy / parts with leaded How to Remove / Install Flat Pack-IC solder alloy / parts is possible but PHILIPS recommends strongly to avoid mixed solder alloy 1. Removal types (leaded and lead-free). With Hot-Air Flat Pack-IC Desoldering Machine: If one cannot avoid or does not know whether 1.
  • Page 10 With Soldering Iron: With Iron Wire: 1. Using desoldering braid, remove the solder from 1. Using desoldering braid, remove the solder from all pins of the flat pack-IC. When you use solder all pins of the flat pack-IC. When you use solder flux which is applied to all pins of the flat pack-IC, flux which is applied to all pins of the flat pack-IC, you can remove it easily.
  • Page 11 2. Installation Instructions for Handling Semi- 1. Using desoldering braid, remove the solder from conductors the foil of each pin of the flat pack-IC on the CBA Electrostatic breakdown of the semi-conductors may so you can install a replacement flat pack-IC more occur due to a potential difference caused by easily.
  • Page 12: Preparation For Servicing

    PREPARATION FOR SERVICING How to Enter the Service Mode Adjustment Mode Caution 1: Purity check mode: Shows Red, Green, Blue or White cyclically on the screen 1. Optical sensors system are used for Tape Start each time the [7] button is pressed. and End Sensor on this equipment.
  • Page 13: Operating Controls And Functions

    OPERATING CONTROLS AND FUNCTIONS 1-5-1 T1102IB...
  • Page 14 1-5-2 T1102IB...
  • Page 15 1-5-3 T1102IB...
  • Page 16 1-5-4 T1102IB...
  • Page 17: Cabinet Disassembly Instructions

    CABINET DISASSEMBLY INSTRUCTIONS 1. Disassembly Flowchart Removal Step/ This flowchart indicates the disassembly steps for the Remove/*Unhook/ Loc. Part Fig. Unlock/Release/ cabinet parts, and the CBA in order to gain access to Note Unplug/Unclamp/ item(s) to be serviced. When reassembling, follow the Desolder steps in reverse order.
  • Page 18 Reference Notes in the Table 1) Disconnect Connector (CN301) on the DVD Main CBA Unit. CAUTION! 2) Short the three short lands of FPC cable with When removing the CRT, be sure to discharge the solder before removing the FFC cable (CN201) Anode Lead of the CRT with the CRT Ground Wire from it.
  • Page 19 (S-5) Wire Holder C [2] Tray Chassis Unit (S-6) Loader Cover (S-5) [4] DVD (S-9) Mechanism (S-9) (S-7) Loader PCB Holder Top Shield [5] DVD Main CBA Unit (S-10) (S-10) (S-7) [8] Deck Assembly (S-7) (S-10) (S-7) (S-8) (S-13) (S-13) [6] Sub CBA [7] Function CBA (S-13)
  • Page 20 Anode Cap (S-4) CRT CBA (S-4) (S-4) [3] CRT (S-4) Fig. D3 DVD Mechanism Short the three short lands by soldering. (Either of two places.) View for A Connector Fig. D4 1-6-4 T1102DC...
  • Page 21 DVD MAIN CBA UNIT CN201 CN301 CN2A CN1A TO SPEAKER ANODE CN2801 CN2571 CL2501A SUB CBA CN2503 CN2502 CN2401 FOCUS MAIN CBA CL403 CN1301 CN1602 CN1803 CL2504A CN1302 CL2501B CL1401 SCREEN CN2501 CRT CBA CL1402 CN1601 AC CORD CL1201 CN1802 TUNER TO SPEAKER ACE HEAD...
  • Page 22: Electrical Adjustment Instructions

    ELECTRICAL ADJUSTMENT INSTRUCTIONS General Note: “CBA” is abbreviation for How to Set up the Service mode: “Circuit Board Assembly.” Service mode: Note: Electrical adjustments are required after 1. Use the service remote control unit. replacing circuit components and certain mechanical parts. It is important to perform 2.
  • Page 23 2. Setting for CONTRAST, COLOR, 3. C-Trap Adjustment TINT, V-TINT and SHARP Data Purpose: To get minimum leakage of the color signal Values carrier. Symptom of Misadjustment: If C-Trap Adjustment is General incorrect, stripes will appear on the screen. 1. Enter the Service mode. (See page 1-7-1.) Test Point Adj.
  • Page 24 4. Setting for Y DL Time TV, Y DL Time EXT, Y SW LPF, Black C-TRAP Adjustment (Factory mode) Stretch Off, Black Stretch CONT [CH. and C. Angle Data Values button button C-TRP 0 C-TRP 1 1. Enter the Service mode. (See page 1-7-1.) [CH.
  • Page 25 5. Setting for CD-VOL, DVD-BRT, DVD-CNT and DVD-SHARP Data CD-VOL Adjustment (Factory mode) Values [CH. [VOL 1. Enter the Service mode. (See page 1-7-1.) button button CD VOL CD VOL 2. CD-VOL Adjustment: Press [VOL o] button on [CH. the service remote control unit once to show “CD button VOL”...
  • Page 26 6. H f Adjustment 7. Cut-off Adjustment Purpose: To get correct horizontal position and size of Purpose: To adjust the beam current of R, G, B, and screen image. screen voltage. Symptom of Misadjustment: Horizontal position and Symptom of Misadjustment: White color may be size of screen image may not be properly displayed.
  • Page 27 8. Setting for 7F DATA/SLP REC/ 9. White Balance Adjustment MONO Data Values Purpose: To mix red, green and blue beams correctly for pure white. 1. Enter the Service mode. (See page 1-7-1.) 2. 7F Data Adjustment: Press [VOL p] button on Symptom of Misadjustment: White becomes bluish the service remote control unit once to show “7F”...
  • Page 28 10. Sub-Brightness Adjustment 11. Focus Adjustment Purpose: To get proper brightness. Purpose: Set the optimum Focus. Symptom of Misadjustment: If Sub-Brightness is Symptom of Misadjustment: If Focus Adjustment is incorrect, proper brightness cannot be obtained by incorrect, blurred images are shown on the display. adjusting the Brightness Control.
  • Page 29 13. V. Shift Adjustment 15. Head Switching Position Adjustment Purpose: To obtain correct vertical position of screen image. Purpose: Determine the Head Switching Position during Playback. Symptom of Misadjustment: If V. position is incorrect, vertical position of image on the screen may Symptom of Misadjustment: May cause Head not be properly displayed.
  • Page 30 17. Convergence Adjustment The following 2 adjustments normally are not attempted in the field. They should be done only Purpose: To obtain proper convergence of red, green when replacing the CRT then adjust as a and blue beams. preparation. Symptom of Misadjustment: If Convergence 16.
  • Page 31 Adjustment Points and Test Points Main CBA TP1301 B-OUT VR1601 +B ADJ Sub CBA TP2501 (+B Adjustment) R2583 H ADJ. UPPER FOCUS VR LOWER SCREEN VR 1-7-10 T1102EA...
  • Page 32: How To Initialize The Tv/Dvd/Vcr

    HOW TO INITIALIZE THE TV/DVD/VCR To put the program back at the factory-default, initialize the TV/DVD/VCR as the following procedure. < DVD Section > < TV/VCR Section > 1. Turn the power on and press [SELECT] button on 1. Use the service remote control unit. the remote control unit to put the TV/DVD/VCR 2.
  • Page 33: Firmware Renewal Mode

    FIRMWARE RENEWAL MODE 1. Turn the power on and press [SELECT] button on " ******* " differ depending on the models. the remote control unit to put the TV/DVD/VCR into DVD mode. Then remove the disc on the tray. F/W Version Up Mode Model No : ******* (It is possible to move to F/W version up mode VERSION : *.**...
  • Page 34: Block Diagrams

    BLOCK DIAGRAMS < TV/VCR Section > System Control / Servo Block Diagram T1102BLS 1-10-1...
  • Page 35 Video Block Diagram T1102BLV 1-10-2...
  • Page 36 Audio Block Diagram T1102BLA 1-10-3...
  • Page 37 Hi-Fi Audio Block Diagram T1102BLH 1-10-4...
  • Page 38 TV Process Block Diagram T1102BLT 1-10-5...
  • Page 39 CRT/H.V. Block Diagram T1102BLCRT 1-10-6...
  • Page 40 Power Supply Block Diagram T1102BLP 1-10-7...
  • Page 41 BLOCK DIAGRAMS < DVD Section > DVD System Control / Servo Block Diagram T1102BLSD 1-10-8...
  • Page 42 Digital Signal Process Block Diagram T1102BLD 1-10-9...
  • Page 43 DVD Audio Block Diagram T1102BLAD 1-10-10...
  • Page 44: Schematic Diagrams / Cba's And Test Points

    SCHEMATIC DIAGRAMS / CBA’S AND TEST POINTS Standard Notes Notes: WARNING 1. Do not use the part number shown on these draw- ings for ordering. The correct part number is shown Critical components having special safety characteris- in the parts list, and may be slightly different or tics are identified with a # by the Ref.
  • Page 45 Main 1/6 Schematic Diagram Parts Location Guide Ref No. Position Ref No. Position Ref No. Position Ref No. Position CAPACITORS DIODES RESISTORS RESISTORS C1203 D1204 R1222 R1270 C1207 D1216 R1223 R1272 C1208 D1217 R1224 R1273 C1210 D1224 R1225 R1274 C1211 D1229 R1226 R1275...
  • Page 46 Main 1/6 Schematic Diagram < TV/VCR Section > Voltage indications for PLAY, REC and DVD modes on the Schematic Diagrams are as shown below: PLAY mode “ “ = SMD REC mode (2.5) DVD mode < > The same voltage for Indicates that the voltage PLAY, REC &...
  • Page 47 Main 2/6 Schematic Diagram < TV/VCR Section > Voltage indications for PLAY, REC and DVD modes on the Schematic Diagrams are as shown below: PLAY mode “ “ = SMD REC mode (2.5) DVD mode < > The same voltage for Indicates that the voltage PLAY, REC &...
  • Page 48 Main 2/6 Schematic Diagram Parts Location Guide Ref No. Position Ref No. Position Ref No. Position Ref No. Position CAPACITORS CAPACITORS COILS RESISTORS C1410 C1443 L1403 R1419 C1411 C1444 L1404 R1420 C1412 C1445 L1405 R1421 C1413 C1447 L1871 R1422 C1414 C1449 L1872 R1424...
  • Page 49 Main 3/6 Schematic Diagram Parts Location Guide Ref No. Position Ref No. Position Ref No. Position Ref No. Position CAPACITORS CAPACITORS COILS RESISTORS C1001 C1322 L1032 R1317 C1002 C1323 L1033 R1320 C1003 C1325 L1302 R1329 C1004 C1332 TRANSISTOR R1333 C1005 C1333 Q1350 R1334...
  • Page 50 Main 3/6 Schematic Diagram < TV/VCR Section > Voltage indications for PLAY, REC and DVD modes on the Schematic Diagrams are as shown below: PLAY mode “ “ = SMD REC mode (2.5) DVD mode < > The same voltage for Indicates that the voltage PLAY, REC &...
  • Page 51 Main 4/6 Schematic Diagram < TV/VCR Section > Voltage indications for PLAY, REC and DVD modes on the Schematic Diagrams are as shown below: PLAY mode “ “ = SMD REC mode (2.5) DVD mode < > The same voltage for Indicates that the voltage PLAY, REC &...
  • Page 52 Main 4/6 Schematic Diagram Parts Location Guide Ref No. Position Ref No. Position Ref No. Position Ref No. Position CAPACITORS CAPACITORS CAPACITORS RESISTORS C1701 C1768 C1793 R1756 C1722 C1769 C1794 R1757 C1732 C1770 C1795 R1758 C1740 C1771 C1796 R1759 C1747 C1772 C1797 R1761...
  • Page 53 Main 5/6 Schematic Diagram Parts Location Guide Ref No. Position Ref No. Position Ref No. Position CAPACITORS CONNECTORS RESISTORS C1112 AA-2 CN1802 R1801 C1113 CN1803 BB-4 R1802 C1114 AA-1 DIODES R1803 AA-2 C1115 AA-2 D1811 R1808 AA-2 C1116 AA-2 D1812 R1809 C1117 D1813...
  • Page 54 Main 5/6 Schematic Diagram < TV/VCR Section > Voltage indications for PLAY, REC and DVD modes on the Schematic Diagrams are as shown below: PLAY mode “ “ = SMD REC mode (2.5) DVD mode < > The same voltage for Indicates that the voltage PLAY, REC &...
  • Page 55 Main 6/6 Schematic Diagram < TV/VCR Section > VOLTAGE CHART (Power off mode) Ref. No. IC1601 12.0 10.9 CAUTION ! NOTE: Ref. No. Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit. The voltage for parts in hot circuit is measured using IC1682 If Main Fuse (F1601) is blown , check to see that all components in the power supply hot GND as a common terminal.
  • Page 56 Main 6/6 Schematic Diagram Parts Location Guide Ref No. Position Ref No. Position Ref No. Position Ref No. Position CAPACITORS DIODES TRANSISTORS RESISTORS C1604 DD-3 D1611 DD-2 Q1604 EE-1 R1638 EE-2 C1605 CC-3 D1613 EE-4 Q1605 FF-1 R1639 FF-2 C1606 DD-3 D1614 EE-3...
  • Page 57 Main CBA Parts Location Guide Ref No. Position Ref No. Position Ref No. Position Ref No. Position Ref No. Position Ref No. Position Ref No. Position Ref No. Position Ref No. Position Ref No. Position Ref No. Position CAPACITORS CAPACITORS CAPACITORS CAPACITORS DIODES...
  • Page 58 Main CBA Top View < TV/VCR Section > Sensor CBA Top View CAUTION ! : For continued protection against risk of fire, NOTE: replace only with same type 4 A, 125V fuse. The voltage for parts in hot circuit is measured using Because a hot chassis ground is present in the power 4A 125V ATTENTION : Utiliser un fusible de rechange de même type de 4A, 125V.
  • Page 59 Main CBA Bottom View < TV/VCR Section > CAUTION ! : For continued protection against risk of fire, NOTE: replace only with same type 4 A, 125V fuse. Because a hot chassis ground is present in the power The voltage for parts in hot circuit is measured using 4A 125V ATTENTION : Utiliser un fusible de rechange de même type de 4A, 125V.
  • Page 60 CRT & Junction Schematic Diagram < TV/VCR Section > Voltage indications for PLAY, REC and DVD modes on the Schematic Diagrams are as shown below: PLAY mode REC mode (2.5) DVD mode < > The same voltage for Indicates that the voltage PLAY, REC &...
  • Page 61 CRT CBA Top View < TV/VCR Section > CRT CBA Bottom View < TV/VCR Section > CRT CBA PARTS LOCATION GUIDE Ref No. Position Ref No. Position Ref No. Position Ref No. Position CAPACITORS DIODES RESISTORS RESISTORS C2504 D2501 R2502 R2515 C2505 D2502...
  • Page 62 Function CBA Top View < TV/VCR Section > FUNCTION CBA PARTS LOCATION GUIDE Ref No. Position CONNECTORS CN2401 CN2801 RESISTORS R2401 R2402 R2403 Function CBA Bottom View < TV/VCR Section > R2404 R2405 R2406 R2407 SWITCHES SW2401 SW2402 SW2403 SW2404 SW2405 SW2406 SW2407 SW2408...
  • Page 63 Sub 1/2 Schematic Diagram < TV/VCR Section > Voltage indications for PLAY, REC and DVD modes on the Schematic Diagrams are as shown below: PLAY mode REC mode (2.5) DVD mode < > The same voltage for Indicates that the voltage PLAY, REC &...
  • Page 64 Sub 1/2 Schematic Diagram Parts Location Guide Ref No. Position Ref No. Position Ref No. Position Ref No. Position CAPACITORS DIODES RESISTORS RESISTORS C2531 D2571 R2551 R2586 C2533 D2572 R2552 R2587 C2552 D2584 R2555 R2588 C2553 D2585 R2556 R2589 C2555 D2586 R2557 R2590...
  • Page 65 Sub 2/2 Schematic Diagram Parts Location Guide Ref No. Position Ref No. Position Ref No. Position Ref No. Position CAPACITORS TRANSISTORS DIODES RESISTORS C2601 D2603 Q2615 R2671 C2604 D2613 Q2616 R2672 C2610 D2625 Q2617 R2673 C2616 D2627 RESISTORS R2675 R2613 C2618 D2648 R2676...
  • Page 66 Sub 2/2 Schematic Diagram < TV/VCR Section > Voltage indications for PLAY, REC and DVD modes on the Schematic Diagrams are as shown below: PLAY mode REC mode (2.5) DVD mode < > The same voltage for Indicates that the voltage PLAY, REC &...
  • Page 67 Sub CBA Parts Location Guide Ref No. Position Ref No. Position Ref No. Position Ref No. Position Ref No. Position Ref No. Position Ref No. Position CAPACITORS CAPACITORS TRANSISTORS DIODES RESISTORS RESISTORS RESISTORS C2531 C2618 D2597 Q2592 R2563 R2598 R2684 C2533 C2625 D2598...
  • Page 68 Sub CBA Top View < TV/VCR Section > TP2501 R2583 (H f Adjustment) J2550 1-11-25 BT1100F01022-A...
  • Page 69 Sub CBA Bottom View < TV/VCR Section > TP2503 H-DRIVE WF20 J2537 SPDIF WF11 PIN 5 CN2571 WF10 Q2571 Collector 1-11-26 BT1100F01022-A...
  • Page 70 DVD Main 1/3 Schematic Diagram < DVD Section > Voltage indications for PLAY and STOP modes on the Schematic Diagrams are as shown below: 1 NOTE: PLAY mode Either IC461 or IC462 is used for DVD MAIN CBA UNIT. “ “...
  • Page 71 Voltage indications for PLAY and STOP modes DVD Main 2/3 Schematic Diagram < DVD Section > on the Schematic Diagrams are as shown below: PLAY mode STOP mode (2.5) The same voltage for Indicates that the voltage “ “ = SMD both PLAY &...
  • Page 72 IC101 Voltage Chart ~ : Voltage is not consistent ----- : Not used Unit : Volts PIN.NO PLAY STOP PIN.NO PLAY STOP PIN.NO PLAY STOP PIN.NO PLAY STOP PIN.NO PLAY STOP PIN.NO PLAY STOP PIN.NO PLAY STOP PIN.NO PLAY STOP ----- ----- -----...
  • Page 73 DVD Main 3/3 Schematic Diagram < DVD Section > Voltage indications for PLAY and STOP modes on the Schematic Diagrams are as shown below: PLAY mode “ “ = SMD STOP mode (2.5) The same voltage for Indicates that the voltage both PLAY &...
  • Page 74: Waveforms

    WAVEFORMS 1-12-1 X6TWF...
  • Page 75: Wiring Diagram < Tv/Vcr Section

    WIRING DIAGRAM < TV/VCR Section > 1-13-1 T1102WIT...
  • Page 76: Wiring Diagram < Dvd Section

    WIRING DIAGRAM < DVD Section > T1102WID 1-13-2...
  • Page 77: System Control Timing Charts

    SYSTEM CONTROL TIMING CHARTS < TV/VCR Section > Mode SW: LD-SW LD-SW Position detection A/D Input voltage Limit Symbol (Calculated voltage) 3.76 V ~ 4.50 V (4.12 V) 4.51 V ~ 5.00 V (5.00 V) 0.00 V ~ 0.25 V (0.00 V) 1.06 V ~ 1.50 V (1.21 V) 0.66 V ~ 1.05 V (0.91 V) 1.99 V ~ 2.60 V (2.17 V)
  • Page 78 Chart 1 1) SP MODE 18 RF-SW The first rise of RF-SW after a rise in F-AD signal. F-AD ( Internal Signal ) "H" "H" "Z" C-DRIVE Stop Detection Acceleration Detection Slow Tracking Value PB CTL Reversal Limit Value 66 C-F/R ROLL COMPENSATION (DRUM SERVO)
  • Page 79 Chart 2 2) LP/EP MODE 18 RF-SW The first rise of RF-SW after a rise in F-AD signal. F-AD ( Internal Signal ) "H" "H" "Z" C-DRIVE Stop Detection Acceleration Detection Slow Tracking Value PB CTL Reversal Limit Value 66 C-F/R ROLL COMPENSATION (DRUM SERVO)
  • Page 80 Chart 3 EJECT ST-S/ END-S "OFF" CASS.LOAD LD-FWD 0.2S LD-REV SFT-SW STOP(B) POWER LD-FWD 0.4S 0.2S LD-REV 0.2S LD-FWD 0.5S LD-REV STOP(A) PLAY LD-FWD PLAY LD-FWD RS1(RS2) LD-REV 0.2S LD-FWD FS1(FS2) PLAY PLAY PAUSE (SLOW) LD-FWD STILL(SLOW) PLAY LD-REV 0.2S LD-FWD PLAY STOP...
  • Page 81 Chart 4 STOP(A) STOP LD-REV 0.2S LD-FWD 0.2S STOP /EJECT 1.0S LD-FWD 0.5S LD-REV STOP(A) LD-REV 0.2S LD-FWD 0.2S STOP /EJECT LD-REV 1.0S LD-FWD 0.5S LD-REV STOP(A) LD-FWD PAUSE LD-FWD 2.5S Short REV LD-REV 0.2S LD-FWD REC PAUSE REC or PAUSE STOP /EJECT...
  • Page 82 < DVD Section > Tray Close ~ Play / Play ~ Tray Open Tray Disc Disc Tray Play Close Rotation Stop Open 3.3V Tray IN (TL221) 1.65V Sled Drive (TP303) 1.65V Disc Drive (TP301) 1.65V Focus Drive (TP304) Tracking Drive 1.65V (TP302) 1-14-6...
  • Page 83: Ic Pin Function Descriptions

    IC PIN FUNCTION DESCRIPTIONS IC1201 (TV/VCR Micro Controller IC) Signal Function Name “H” ≥ 4.5 V, “L” ≤ 1.0 V System Reset Signal (Reset IN RESET = “L”) Signal Function Name IN XC-IN Sub Clock 32 kHz IN LD-SW Loading Switch Input 36 OUT XC-OUT Sub Clock 32 kHz OUT DVD-LED...
  • Page 84 Signal Function Name E2PROM/CHROMA IC Tuner 71 OUT SCL Communication Clock E2PROM/CHROMA IC Tuner Communication Data Not Used IN C-SYNC C-Sync Input Not Used Capstan Motor Control 76 OUT C-CONT Signal 77 OUT D-CONT Drum Motor Control Signal P-SAFETY Power Supply Failure Detection 3 Not Used Take Up Reel Rotation...
  • Page 85: Lead Identifications

    LEAD IDENTIFICATIONS 2SK3563 RDX050N50 FD5 MID-32A22F 2SD400(E,F) PQ070XF01SZH PT204-6B-12 AN17812A 1: Vin 2: Vo 3: GND S D G 1 2 3 4 E C B 4: Vc LA78040A 2SA1175(F) BA1F4M-T 2SA1015-GR(TPE2) AN15524A 2SA950(O,Y) BN1F4M-T 2SC1815-GR(TPE2) 2SC1627Y-TPE2 KRA103M 2SC2120-O-TPE2 2SC2785(F) KRC103M 2SC2120-Y(TPE2) 2SC3331(T,U)
  • Page 86: Electrical Parts List

    1-17-1 ELECTRICAL PARTS LIST MISCELLANEOUS COILS 9965 000 28878 DVD MAIN CBA UNIT L2505 9965 000 18121 CHOKE COIL 22UH-K 9965 000 28879 MPS CBA L2505 * 9965 000 29021 CHOKE COIL 22UH-K 9965 000 28880 MMA CBA L2505 * 9965 000 29022 FIXED INDUCTOR LGB0810TLF-220K 9965 000 28882...
  • Page 87 1-17-2 ELECTRICAL PARTS LIST TRANSISTORS Q2592! 9965 000 05643 TRANSISTOR 2SC2785(F) D2502 * 4822 130 30621 1N4148 Q2592! * 9965 000 10994 2SC3199-GR/KTC3199-GR D2503 4822 130 32778 1SS133 Q2592! * 4822 130 41306 2SC1815GR D2503 * 4822 130 30621 1N4148 Q2610 9965 000 05644 TRANSISTOR 2SA1175(F)
  • Page 88 1-17-3 ELECTRICAL PARTS LIST MMA CBA UNIT SW1209 * 9965 000 28959 TACT SWITCH KSM0612B MMA CBA UNIT consists of MAIN CBA and SENSOR CBA SW1209 * 9965 000 28960 TACT SWITCH TC-1104(H=5.0) SW1210 9965 000 13864 TACT SWITCH SKQSAB OR SW1210 * 9965 000 28959 TACT SWITCH KSM0612B MAIN CBA...
  • Page 89 1-17-4 ELECTRICAL PARTS LIST CAPACITORS C1619 * 9965 000 28898 ELCAP. 1000UF/16V M(VR/HC) L1211 * 9965 000 28934 FIXED INDUCTOR LGB0810TLF-470K C1620 9965 000 25495 ELECTROLYTIC CAP. 1000UF/16V M L1402 9965 000 13859 INDUCTOR 22UH-J-26T OR C1620 * 9965 000 28898 ELCAP.
  • Page 90 1-17-5 ELECTRICAL PARTS LIST DIODES D1350 * 4822 130 30621 1N4148 D1636 * 4822 130 30621 1N4148 D1351 4822 130 32778 1SS133 D1640! 9965 000 28923 DIODE 1ZC36 D1351 * 4822 130 30621 1N4148 D1640! * 9965 000 28918 ZENER DIODE RD39FB D1353 9965 000 24180 ZENER DIODE MTZJT-779.1B...
  • Page 91 1-17-6 ELECTRICAL PARTS LIST TRANSISTORS INTEGRATED CIRCUITS Q1402 * 4822 130 11101 2SA1015GR IC1001 9965 000 28925 IC VIF/SIF M61116FP TF0G Q1403 9965 000 05644 TRANSISTOR 2SA1175(F) IC1201! 9965 000 28926 MICRO COMPUTER M3776AMCH-BA2GP Q1403 * 4822 130 10462 KTA1267-GR IC1202 9965 000 06554 IC:MEMORY BR24C02F-W...
  • Page 92: Exploded Views

    EXPLODED VIEWS Cabinet SHINWHA TAPE SGT-730 (BLACK) Details for L551 V501-2 and surrounding parts SHINWHA TAPE SGT-730 V501-1 (WHITE) L551 V501-3 CRT CBA TB18 Scotch TB23-2 Tape #880 L3-1 CLN551 CLN551 CLN551 TB14 L3-2 DVD Main TL1-5 CBA Unit TL1-1 Scotch TL1-1 Tape #880...
  • Page 93 Packing X2-1 X2-1 Packing Tape Tape 1-18-2 T1102PEX...
  • Page 94 A1-1 * 9965 000 28859 FRONT CABINET TD900UA A1-2 9965 000 28860 CONTROL PLATE T1102UC A1-3 9965 000 28861 BADGE BRAND T7310UL ~MAGNAVOX~ A1-4 9965 000 28862 CASSETTE DOOR TD901UB A1-7 9965 000 28863 TRAY PANEL TD930JA 9965 000 28857...
  • Page 95 DECK MECHANISM SECTION Color TV with Built-In VCR/DVD Player Sec. 2: Deck Mechanism Section I Standard Maintenance I Mechanism Alignment Procedures I Disassembly / Assembly of Mechanism I Deck Exploded Views I Deck Parts List TABLE OF CONTENTS STANDARD MAINTENANCE............. . 2-1-1 SERVICE FIXTURE AND TOOLS .
  • Page 96: Standard Maintenance

    STANDARD MAINTENANCE Service Schedule of Components This maintenance chart shows you the standard of replacement and cleaning time for each part. Because those may replace depending on environment and purpose for use, use the chart for reference. Deck Periodic Service Schedule Ref.No.
  • Page 97 Cleaning Cleaning of ACE Head Clean the head with a cotton swab. Cleaning of Video Head Procedure Clean the head with a head cleaning stick or chamois 1. Remove the top cabinet. cloth. 2. Dip the cotton swab in 90% ethyl alcohol and clean Procedure the ACE Head.
  • Page 98: Service Fixture And Tools

    SERVICE FIXTURE AND TOOLS Back Tension Meter Flat Screw Driver VFMS0001H6 (Made in USA) (Purchase Locally) Alignment Tape Post Adjustment Screwdriver Metric Thickness Gauges Lock Screw Driver (Purchase Locally) (Purchase Locally) Head Cleaning Stick 2-2-1 MK14FIX_PC...
  • Page 99: Mechanical Alignment Procedures

    MECHANICAL ALIGNMENT PROCEDURES Explanation of alignment for the tape to correctly run B. Method to place the Cassette Holder in the tape- starts on the next page. Refer to the information loaded position without a cassette tape below on this page if a tape gets stuck, for example, in 1.
  • Page 100 1. Tape Interchangeability Alignment Note: To do these alignment procedures, make sure that the Tracking Control Circuit is set to the preset position every time a tape is loaded or unloaded. (Refer to page 2-3-4, procedure 1-C, step 2.) Equipment required: Dual Trace Oscilloscope VHS Alignment Tape (VFMS0001H6) Guide Roller Adj.
  • Page 101 1-A. Preliminary/Final Checking and 4. If creasing or snaking is apparent, adjust the Tilt Adj. Screw of the ACE Head. (Fig. M6) Alignment of Tape Path Purpose: To make sure that the tape path is well stabilized. Azimuth Adj. Screw Symptom of Misalignment: If the tape path is unstable, the tape will be damaged.
  • Page 102 5. To shift the CTL waveform, press [CHANNEL K] either at the beginning or end of track as shown in or [CHANNEL L] buttons on the unit. Then make Fig. M9. sure that the maximum output position of PB FM ±...
  • Page 103 1-D. Azimuth Alignment of Audio/Control/ Erase Head Correct Incorrect Purpose: To correct the Azimuth alignment so that REV Post the Audio/Control/Erase Head meets tape tracks Tape properly. Symptom of Misalignment: If the position of the Audio/Control/Erase Head is not properly aligned, the Audio S/N Ratio or Frequency Response will be poor.
  • Page 104: Disassembly/Assembly Procedures Of Deck Mechanism

    DISASSEMBLY/ASSEMBLY PROCEDURES OF DECK MECHANISM Before following the procedures described below, be sure to remove the deck assembly from the cabinet. (Refer to CABINET DISASSEMBLY INSTRUCTIONS of Main Section.) All the following procedures, including those for adjustment and replacement of parts, should be done in Eject mode;...
  • Page 105 Removal Installation Step Starting Remove/*Unhook/ /Loc. Part Adjustment Fig. No. Unlock/Release/ Condition Unplug/Desolder (+)Refer to Alignment [32] [25] Loading Arm (SP) Assembly B DM2, DM14 Sec.Page 2-5-1 (+)Refer to Alignment [33] [32] Loading Arm (TU) Assembly B DM2, DM14 Sec.Page 2-5-1 [34] [2], [25] M Brake (TU) Assembly DM1, DM15...
  • Page 106 Top View [41] [42] [43] [46] [14] [13] [11] [15] [36] [10] [12] [35] [34] [40] [29] [30] [16] [39] [38] Fig. DM1 Bottom View [20] [33] [32] [24] [26] [27] [25] [23] [28] [22] [21] [31] Fig. DM2 2-4-3 N2466FTDA...
  • Page 107 (S-1) (S-1) (L-1) (L-3) (L-2) (S-1A) (P-1) Installation of [3] and [6] First, insert [6] diagonally in [3] as shown below. Then, install [6] in [3] while pushing (L-1) in a direction of arrow. After installing [6] in [3], confirm that pin A of [3] enters hole A of [6] properly.
  • Page 108 [11] (S-4A) (L-4) [46] (P-3) [13] [47] Removal of [11] [12] (L-14) 1) Remove screw (S-4A). 2) Unhook spring (P-2). [10] Release (L-4) while (P-2) holding [12] with a finger. Loosen a finger holding [12] and remove [11]. (S-2) Pin of [12] Pin of [10] Groove of [28] When reassembling [10] and...
  • Page 109 Installation of [13] and [12] (S-5) [14] (S-6) [16] [13] [15] Hook spring (P-3) up to [12] and [13], then install then to (P-3) the specified position so that [12] will be floated slightly while holding [12] and [13]. (Refer to Fig. A.) [12] Fig.
  • Page 110 (S-8) [22] (C-2) (C-1) [23] (L-6) [21] (P-5) [20] Cap Belt (P-5) [28] Installation position of Cap Belt [21] Cap Belt When installing [23], install the spring (P-5) to [28] as shown in the left figure, and then install [23] while Pin on pressing the spring (P-5) to bottom...
  • Page 111 (P-6) [25] (C-4) [31] Refer to the Alignment Section, Page 2-5-1. (S-9) [29] [33] [30] (L-11) (L-10) [32] (L-8) (C-3) [27] [28] [24] [26] (L-9) Fig. DM14 Fig. DM13-1 [36] Break belt (P-7) Installation of [25] [34] Position of Mode Lever when installed [40] Pin of [35] Pin of [31]...
  • Page 112 [42] [41] [43] (L-13) Fig. DM16 (P-9) [44] [45] Slide Fig. DM17 2-4-9 N2466FTDA...
  • Page 113: Alignment Procedures Of Mechanism

    ALIGNMENT PROCEDURES OF MECHANISM The following procedures describe how to align the Alignment 1 individual gears and levers that make up the tape Loading Arm (SP) and (TU) Assembly loading/unloading mechanism. Since information about the state of the mechanism is provided to the Install Loading Arm (SP) and (TU) Assembly so System Control Circuit only through the Mode Switch, that their triangle marks point to each other as...
  • Page 114: Deck Exploded Views

    DECK EXPLODED VIEWS Deck Mechanism View 1 Mark Description Floil G-684G or Multemp MH-D (Blue grease) SLIDUS OIL #150 B494 L1467 L1191 B553 B411 B567 L1053 B410 L1051 Chassis Assembly Top View (Lubricating Point) B501 B560 L1450 L1450 B426 L1466 B121 B126 B492...
  • Page 115 Deck Mechanism View 2 Mark Description Floil G-684G or Multemp MH-D (Blue grease) B587 B521 B487 SLIDUS OIL #150 B416 B591 SANKOUL FG84M (Yellow grease) B520 B590 B522 L1406 B148 B499 B508 B573 B592 B574 B558 B564 B557 B414 B565 B525 L1151 B417...
  • Page 116 Deck Mechanism View 3 Mark Description Floil G-684G or Multemp MH-D (Blue grease) L1321 SLIDUS OIL #150 B347 L1321 B355 B354 B483 L1341 B425 B482 B562 B300 B563 B313 L1474 B529 B360 B359 B361 B555 B561 B303 Some Ref. Numbers are not in sequence. B514 2-6-3 N2466FTDEX...
  • Page 117 2-7-1 MECHANICAL PARTS LIST - VCR MECHANISM 9965 000 29043 CYLINDER ASSY MK12.5 NTSC 6HD B563 9965 000 16666 SLIDER SHAFT MK12 B2 * 9965 000 29044 CYLINDER ASSY MK12.5 NTSC 6HD B564 9965 000 17205 M GEAR MK12 9965 000 23363 LOADING MOTOR ASSEMBLY MK12.5 B565 9965 000 17206...

Table of Contents