Yorkville Sound 3400 service manual M1011A, MS2BOTTOMBAMP, Shear

Contents CANADA HIGH EFFICIENCY STEREO POWER AMPLIFIER3400 Quality and Innovation SincePower Cord IMPORTANT SAFETY INSTRUCTIONSPower Sources REFER SERVICING TO QUALIFIED SERVICE PERSONNELCIRCUIT DESCRIPTION VOLTAGE AMPLIFIERCIRCUIT DESCRIPTION SHUTDOWN CIRCUITTHE SECOND TIER QUIESCENT CONDITIONConditions of test Current Limit Protection CircuitryDC Protection Identifying Defective Boards in the AP-3400 EMS CircuitFan Circuit Thermal Shutdown CircuitPOWER SPECIFICATIONSSTEP 3 POWER UP PROCEDURE WITHOUT M1002A BOARDS STEP 4 DISMANTLING AND REASSEMBLY PRECAUTIONSSTEP 1 VISUAL INSPECTION OF FRONT PANEL AND FAN STEP 3 POWER UP PROCEDURE WITHOUT M1002 BOARDSSTEP 4 DISMANTLING AND REASSEMBLY PRECAUTIONS AP3400 Parts List 10/28/98M1013A.SCH DATABASE HISTORY M1011A.SCH DATABASE HISTORYM1002A.SCH DATABASE HISTORY VER# DESCRIPTION OF CHANGE M1011A.SCH DATABASE HISTORYMODELS - AP-3400 DATESHEAR M1011AMS2BOTTOMBAMP SHEARM1011A.PCB DATABASE HISTORY M1011ALEFT = CHAN A RIGHT = CHAN BSHEAR C8M1012M1012 SHEARB C E MJH11018MPSA06 2N5551B C E MJH110182N5551 MPSA06SHEAR M1013AAP-3400 COPPER OZ@R55WATT M1002A AP-34005WATT Testing Repaired Circuit Board YORKVILLE SOUND AP3000 AND AP3400 SERVICEQuick Fix for M1002 and M1002A the M1002 or M1002A circuit board to be serviced If the CHECK M1002AAP-3400 SHEARA C - W H I T E SHOWN WIRED FORAP-3400CEXFMR WIRING NOV #1289A C - W H I T E SHOWN WIRED FORAP-3400CEXFMR WIRING NOV #1289