Memorex MT2025D Service Manual - Page 9
Make C713/C714 open. Multimeter is at band R
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Maintenance Service and Trouble shooting 5 Picture exists but no sound Make C713/C714 open. Multimeter is at band RΧ1K. Red probe connect to ground. Touch No.6 OR No.8 of IC701 with No noise Power amplifier is abnormal. Inspect IC701 and peripheral components of IC701 Have noise Make C713 OR C714 collector open. Touch No.6 OR No.8 of Q702 with black probe to see if Yes Inspect C713、C714 No Check to see if +16V exists Yes Inspect IC201 and peripheral component of IC201 No Inspect +16V power supply 6. Lack of red Check to see if V501 is open or not well welded Yes Change V501 or weld V501 again No Check to see if voltages of SK501 are normal No Inspect RI5n0s2p,Re5c0t 3,R504 Yes Inspect the circuit from No.51 of IC201 to No.3 of SK501 4 PDF pdf Fact or y Pr o wÿww. f i nepr i nt . com. cn