Magnavox MWC24T5 service manual Precautions during Servicing

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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.

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. Examples: RF converters, RF cables, noise blocking capacitors, and noise blocking filters, etc.

C.Use specified internal wiring. Note especially:

1)Wires covered with PVC tubing

2)Double insulated wires

3)High voltage leads

D.Use specified insulating materials for hazardous live parts. Note especially:

1)Insulation Tape

2)PVC tubing

3)Spacers

4)Insulators for transistors.

E.When replacing AC primary side components (transformers, power cord, etc.), wrap ends of wires securely about the terminals before soldering.

F.Observe that the wires do not contact heat producing parts (heat sinks, oxide metal film resistors, fusible resistors, etc.)

G.Check that replaced wires do not contact sharp edged or pointed parts.

H.When a power cord has been replaced, check that 5~6 kg of force in any direction will not loosen it.

I.Also check areas surrounding repaired locations.

J.Be careful that foreign objects (screws, solder droplets, etc.) do not remain inside the set.

K.Crimp type wire connector

When replacing the power transformer in sets where the connections between the power cord and power transformer primary lead wires are performed using crimp type connectors, in order to prevent shock hazards, perform carefully and precisely the following steps.

Replacement procedure

1)Remove the old connector by cutting the wires at a point close to the connector.

Important: Do not re-use a connector (discard it).

2)Strip about 15 mm of the insulation from the ends of the wires. If the wires are stranded, twist the strands to avoid frayed conductors.

3)Align the lengths of the wires to be connected. Insert the wires fully into the connector.

4)Use the crimping tool to crimp the metal sleeve at the center position. Be sure to crimp fully to the complete closure of the tool.

L.When connecting or disconnecting the DVD/VCR connectors, first, disconnect the AC plug from the AC supply socket.

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Contents Main Section Illustration at rightSuffix B Rating LabelImportant Safety Notice Main Section DVD SpecificationsDescription Condition Unit Nominal Limit PTD 1-NOR TIT.1 CHP.1VCR Hi-Fi AudioAmsp Pmsp Location Top of DVD mechanism Laser Beam Safety PrecautionsThis DVD player uses a pickup that emits a laser beam E7NLSPSafety Precautions for TV Circuit Important Safety PrecautionsReading should Test ALL ExposedTvdvdnisp Precautions during Servicing Measuring Method Power on Safety Check after ServicingClearance Distance Leakage Current TestHow to Remove / Install Flat Pack-IC Instructions for ConnectorsStandard Notes for Servicing Circuit Board IndicationsMachine Masking Flat Pack-IC Tape TweezersWith Soldering Iron With Iron Wire InstallationPin 1 of the Flat Pack-IC Is indicated by a mark PresolderGround for Human Body Instructions for Handling Semi- conductorsGround for Workbench IncorrectHow to Enter the Service Mode How to Enter the Service ModePreparation for Servicing PreparingDisassembly Flowchart Cabinet Disassembly InstructionsDisassembly Method RemovalFig. D1 Reference Notes in the TableTray Chassis Unit Anode Cap CRT CBADVD Mechanism DVD Main CBA Unit How to make service remote control unit Electrical Adjustment InstructionsDC 120V +B Adjustment Test Equipment RequiredF0 Adjustment GeneralR2583 CH. o / p buttons Video Cut-off Adjustment Size AdjustmentPincushion Adjustment White Balance Adjustment Sub-Brightness AdjustmentSmpte 10. H. Position Adjustment Focus Adjustment11. V. Shift Adjustment 12. V. Size AdjustmentHead Switching Position Adjustment Purity AdjustmentGreen RED Blue Magnet RB Magnet RB-G Convergence AdjustmentHOW to Initialize the TV/DVD/VCR DVD SectionTV/VCR Section Firmware Renewal Mode Appearance shown in *1 of Fig. b is described as followsAppearance State Main CBA 10-1 T2202BLSVideo Block Diagram 10-2T2202BLV Audio Block Diagram 10-3T2202BLA Diagram 10-4T2202BLH 10-5 T2202BLT TV Process Block DiagramCRT/H.V. Block Diagram 10-6T2202BLCRT IC1601 Power Supply Block DiagramT2202BLSD 10-810-9 T2202BLD Digital Signal Process Block DiagramSchematic Diagrams / CBA’S and Test Points Standard NotesX7TNSC Test Point Information How to read converged linesArea D3 Area B1T2202SCM1 Main 1/6 & Sensor Schematic Diagram TV/VCR SectionT2202SCM2 Main 2/6 Schematic Diagram TV/VCR SectionT2202SCM3 Main 3/6 Schematic Diagram TV/VCR SectionT2202SCM4 Main 4/6 Schematic Diagram TV/VCR SectionT2202SCM5 Main 5/6 & Junction-A Schematic Diagram TV/VCR SectionT2202SCM6 Main 6/6 Schematic Diagram TV/VCR SectionT2202SCSUB1 Sub 1/2 Schematic Diagram TV/VCR SectionSub 2/2 Schematic Diagram TV/VCR Section 11-10T2202SCSUB2 Function & Junction-B Schematic Diagram TV/VCR Section CRT Schematic Diagram TV/VCR SectionT2202SCCRT T2202SCF 11-1111-12 T2202SCD1 DVD Main 1/3 Schematic Diagram DVD Section11-13 T2202SCD2 DVD Main 2/3 Schematic Diagram DVD Section11-14 T2202SCD3 DVD Main 3/3 Schematic Diagram DVD SectionBHF300F01011A Main CBA Top View TV/VCR SectionBHF300F01011B 11-15 BT1200F0101311-16 BT1200F01013 Main CBA Bottom View TV/VCR Section11-17 BT1200F01023-A Sub CBA Top View TV/VCR Section11-18 BT1200F01023-A Sub CBA Bottom View TV/VCR Section11-19 BT1200F01023-B BT1200F01023-E BT1200F01023-C 11-20 BT1200F01023-DWaveforms 12-1X7TWF T2202WIT 13-113-2 T2202WID WiringMode SW LD-SW System Control Timing ChartsSymbol Symbol Loading Status14-2 Chart14-3 STILL/SLOW- Play 14-414-5 Tray Close ~ Play / Play ~ Tray Open Pin Signal Function ≥ 4.5 V, L ≤ 1.0 Pin Signal FunctionIC PIN Function Descriptions IC1201 TV/VCR Micro Controller ICOUT YCA-SDA PB-HOUT YCA-CS OUT YCA-SCL16-1 T2202LE Lead IdentificationsCabinet Exploded ViewsDVD Mechanical Parts 17-1 T2202CEX17-2 T2203PEX PackingV501 and L551 Combination Mechanical Parts ListCRT Warning Label Location CRT Type No. CRT Warning Label20060325 19-1 T2202EL Electrical Parts ListCCD3DKA0B821 20060325 19-2 T2202ELICS 20060325 19-3 T2202EL20060325 19-4 T2202EL 20060325 19-5 T2202EL SwitchesWT1 Lead Clamper 20060325 19-6 T2202EL20060325 19-7 T2202EL 20060325 19-8 T2202EL CRT CBAT2202UC MWC24T5
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