Yorkville Sound 3400 service manual If the

Contents Quality and Innovation Since HIGH EFFICIENCY STEREO POWER AMPLIFIER3400 CANADAREFER SERVICING TO QUALIFIED SERVICE PERSONNEL IMPORTANT SAFETY INSTRUCTIONSPower Sources Power CordSHUTDOWN CIRCUIT VOLTAGE AMPLIFIERCIRCUIT DESCRIPTION CIRCUIT DESCRIPTIONQUIESCENT CONDITION THE SECOND TIERDC Protection Current Limit Protection CircuitryConditions of test Thermal Shutdown Circuit EMS CircuitFan Circuit Identifying Defective Boards in the AP-3400STEP 4 DISMANTLING AND REASSEMBLY PRECAUTIONS SPECIFICATIONSSTEP 3 POWER UP PROCEDURE WITHOUT M1002A BOARDS POWERAP3400 Parts List 10/28/98 STEP 3 POWER UP PROCEDURE WITHOUT M1002 BOARDSSTEP 4 DISMANTLING AND REASSEMBLY PRECAUTIONS STEP 1 VISUAL INSPECTION OF FRONT PANEL AND FANM1002A.SCH DATABASE HISTORY M1011A.SCH DATABASE HISTORYM1013A.SCH DATABASE HISTORY DATE M1011A.SCH DATABASE HISTORYMODELS - AP-3400 VER# DESCRIPTION OF CHANGESHEAR M1011AMS2BOTTOMBAMP SHEARM1011A M1011A.PCB DATABASE HISTORYRIGHT = CHAN B LEFT = CHAN ASHEAR C8M1012M1012 SHEAR2N5551 MJH11018MPSA06 B C EMPSA06 MJH110182N5551 B C ECOPPER OZ M1013AAP-3400 SHEAR5WATT M1002A AP-3400@R55WATT Testing Repaired Circuit Board Quick Fix for M1002 and M1002A AP3000 AND AP3400 SERVICEYORKVILLE SOUND the M1002 or M1002A circuit board to be serviced If the SHEAR M1002AAP-3400 CHECK#1289 SHOWN WIRED FORAP-3400CEXFMR WIRING NOV A C - W H I T E#1289 SHOWN WIRED FORAP-3400CEXFMR WIRING NOV A C - W H I T E