Magnavox 19MDTR20 Service Manual

Also see for 19MDTR17: Features

Contents

1-8-1 SC_5(Top View) (Bottom View)(Bottom View)Electrolytic Capacitor+Transistor or Digital TransistorNPN Transistor PNP TransistorNPN Digital Transistor PNP DigitalTransistor(Top View)(Top View)E C BE C B< PCB Symbols >E C B(Top View)(Top View)E C BE C BDigital Transistor< Schematic Diagram Symbols >SCHEMATIC DIAGRAMS / CBA’S AND TEST POINTSStandard NotesWARNINGCritical components having special safety characteris-tics are identified with a # by the Ref. No. in the partslist and enclosed within a broken line* (where severalcritical components are grouped in one area) alongwith the safety symbol # on the schematics orexploded views.Use of substitute replacement parts which do not havethe same specified safety characteristics may createshock, fire or other hazards.Under no circumstances should the original design bemodified or altered without written permission fromPhilips Consumer Electronics Company. Philipsassumes no liability, express or implied, arising out ofany unauthorized modification of design. Servicerassumes all liability.* Broken Line :Capacitor Temperature MarkingsCapacitors and transistors are represented by the fol-lowing symbols.Notes:1. Do not use the part number shown on these draw-ings for ordering. The correct part number is shownin the parts list, and may be slightly different oramended since these drawings were prepared.2. To maintain original function and reliability ofrepaired units, use only original replacement partswhich are listed with their part numbers in the partslist section of the service manual.3. How to read converged lines.Examples:(1). "1-D3" means that line number "1" goes to area"D3."(2). "1-B1" means that line number "1" goes to area"B1."4. All resistance values are indicated in ohms(K=103 , M=106 ).5. Resistor wattages are 1/4W or 1/6W unless other-wise specified.6. All capacitance values are indicated in μF(P=10-6 μF).7. All voltages are DC voltages unless otherwisespecified.8. Voltage indications for PLAY and REC modes onthe schematics are as shown belowMark Capacitychange rateStandardtemperatureTemperaturerange(B) ±10% 20°C -25~+85°C(F) +30 - 80% 20°C –25~+85°C(SR) ±15% 20°C –25~+85°C(Z) ± 22.5% 20°C –25~+85°C1-D3Distinction AreaLine Number(1 to 3 digits)321A B C D1-B11-D3AREA D3AREA B12 315.0(2.5)PLAY modeSTOP mode5.0The same voltage forboth PLAY & STOP modes Indicates that the voltageis not consistent here.< DVD Section >2 315.0(2.5)[ ]5.0Indicates that the voltageis not consistent here.< TV/VCR Section >Unit: VoltsPLAY modeREC modeDVD modeThe same voltage forPLAY, REC & DVDmodes