Sony XM7547 free download

File name Sony-XM7547 caramp.pdf

XM-7547 SERVICE MANUAL US Model Canadian Model AEP Model UK Model E Model SPECIFICATIONS STEREO POWER AMPLIFER MICROFILM 1 TABLE OF CONTENTS 1. SERVICE MODE ... 3 2. GENERAL ... 4 3. DISASSEMBLY 3-1. Side Plate and Filer Board ... 7 3-2. Amplifier/Power Board and LED Board ... 7 Notes on chip component replacement · Never reuse a disconnected chip component. · Notice that the minus side of a tantalum capacitor may be damaged by heat. 4. ELECTRICAL ADJUSTMENT ... 7 5. DIAGRAMS Block Diagram ­ Amplifier Sction ­ ... 8 Block Diagram ­ Power Section ­ ... 9 IC Block Diagram ... 10 Printed Wiring Board ­ LED/Filter Section ­ ... 10 Schematic Diagram ­ Filter/Amplifier (1/3) Section ­ ... 11 Printed Wiring Board ­ Amplifier Section ­ ... 12 Schematic Diagram ­ Amplifier (2/3) Section ­ ... 13 Schematic Diagram ­ Power/Amplifier (3/3)/LED Section ­ ... 14 5-9. Printed Wiring Board ­ Power Section ­ ... 15 5-1. 5-2. 5-3. 5-4. 5-5. 5-6. 5-7. 5-8. 6. EXPLODED VIEWS 6-1. Plate and Cover Section ... 17 6-2. Board and Heat Sink ... 18 7. ELECTRICAL PARTS LIST ... 19 2 SECTION 1 SERVICE NOTE Clearing the Protector During Repairs · OVER CURRENT : Detects overcurrent during output. · OFF SET : Detects DC offset at the speaker terminal. 1. Clearing the OVER CURRENT protector 1 When the position of the MODE switch (S801/power board) is set to HI-VOLTAGE : Cut the jumper wire JW535 of the amplifier board. 2 When the position of the MODE switch (S801/power board) is set to HI-CURRENT : Cut the jumper wire JW690 of the amplifier board. 2. Clearing the OFF SET protector · Cut the jumper wire JW502 of the amplifier board. 3. TEST TONE Function 1 Press the TEST TONE button (S851/amplifier board) with the power ON. The amplifier is normal if sound is produced from the speaker. 2 If no sound : Problem causer by incorrect connecttion of the power supply system or sperker system. : The signals input by the RCA cable before the amplifier system are abnormal. Adjustment Location: - POWER BOARD - (Component side) - AMPLIFIER BOARD - (Component side) S801 MODE S851 TEST TONE JW502 JW690 JW535 3 SECTION 2 GENERAL This section is extracted from instruction manual. 4 5 6 SECTION 3 DISASSEMBLY Note: Follow the disassembly procedure in the numerical order given. SECTION 4 ELECTRICAL ADJUSTMENT IDLING CURRENT ADJUSTMENT 2 Four screws (BTP3x8) 3 Bottom plat