Magnavox 19MDTR20 Service Manual

Also see for 19MDTR17: Features

Contents

Power Supply Block DiagramLINEFILTERBRIDGERECTIFIERT2601IC2601ERRORVOLTAGE DETW2601 F26014A/125VL2601 D2603 D2606TD857BLPDEGAUSSINGCOILCN2601PS2601HOT COLD1-5-141-5-13POWER SUPPLY/AV CBAMAIN CBADVD MAIN CBA UNITNOTE :The voltage for parts in hot circuit is measured usinghot GND as a common terminal.CAUTION !Fixed voltage power supply circuit is used in this unit.If Main Fuse (F2601) is blown, check to see that all components in the power supplycircuit are not defective before you connect the AC plug to the AC power supply.Otherwise it may cause some components in the power supply circuit to fail.4A 125VSWITCHINGQ2601IC1602P-DOWN(TO PIN84 OF IC1201)Q2604IC2603IC2604VR2601Q2602+5V REG.+B ADJ5 +B6 +B3 DEF+BQ1608SW+5VQ1611SW+5VQ1613SW+5VP-ON+5VP-ON+5VP-ON+5VT+5VP-ON+9VP-ON+12VAL+5VP-ON+12VQ1612AL+33VD/L+15VP-ON+5V+5V-CTRLP-ON-H(FROM PIN31 OF IC1201)DVD-MAIN-POWER(FROM PIN42 OF IC1201)CN2602 TO CN502TOCRT/H.V.BLOCKCN2804 CN1803CN2803 CN1804CN2402 CN401DVD-ON+3.3V123413 13DVD-ON+5V16 16DVD-MAIN-POWER9 9P-ON-H2 2P-ON+9V(3)19 19AC-DOWN19 19D/L+15V4 4P-ON+9V(1)10 10P-ON+12V18 18P-ON+12V9 9AL+33V8 8AL+5.7V6 6P-ON+9V(2)3 3EV+1.5V2 2EV+1.5V1 1EV+1.5V4 4EV+3.3V5 5EV+3.3V17 17DVD-ON+3.3V14 14AL+9V15 15AL+9V19 19PWRCONDVD-ON+5VEV+3.3VEV+1.5VAL+9V1216151411131092357FEEDBACK+3.3VREG.REG.Q2606Q2614Q2607Q2613Q2609Q2605Q2615Q26171 24IC2602+1.5VREG.1 24Q2611Q2610Q2612Q2608FOR CONTINUED PROTECTION AGAINST RISK OF FIRE,REPLACE ONLY WITH SAME TYPE 4 A, 125V FUSE.CAUTION:ATTENTION: UTILISER UN FUSIBLE DE RECHANGE DE MÊME TYPE DE 4A, 125V.4A 125VFROM CHROMABLOCKP-ON+9VNOTE FOR WIRE CONNECTORS:1. PREFIX SYMBOL "CN" MEANS CONNECTOR.(CAN DISCONNECT AND RECONNECT.)2. PREFIX SYMBOL "CL" MEANS WIRE-SOLDERHOLES OF THE PCB.(WIRE IS SOLDERED DIRECTLY.)PWRCONFROM DVD SYSTEMCONTROL/SERVO BLOCK