Sony XM7527 free download

File name Sony-XM7527 caramp.pdf

XM-7527 SERVICE MANUAL US Model Canadian Model AEP Model UK Model E Model SPECIFICATIONS STEREO POWER AMPLIFIER MICROFILM 1 TABLE OF CONTENTS 1. SERVICE MODE ... 3 2. GENERAL ... 4 3. DISASSEMBLY 3-1. Side Plate and Bottom Plate ... 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 ... 8 5. DIAGRAMS 5-1. Block Diagram ­ Amplifier Section ­ ... 9 5-2. Block Diagram ­ Power Section ­ ... 10 5-3. IC Block Diagram ... 11 5-4. Printed Wiring Board ­ Filter/Amplifier Section ­ ... 12 5-5. Schematic Diagram ­ Filter/Amplifier Section ­ ... 13 5-6. Printed Wiring Board ­ Power Section ­ ... 14 5-7. Schematic Diagram/Printed Wiring Board ­ LED/Power Section ­ ... 15 6. EXPLODED VIEWS 6-1. Plate and Cover Section ... 16 6-2. Board and Heat Sink Section ... 16 7. ELECTRICAL PARTS LIST ... 17 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 JW065 of the amplifier board. 2 When the position of the MODE switch (S801/power board) is set to HI-CURRENT : Cut the jumper wire JW066 of the amplifier board. 2. Clearing the OFF SET protector · Cut the jumper wire JW024 of the amplifier board. 3. TEST TONE Function 1 Press the TEST TONE button (S805/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) S801 MODE - AMPLIFIER BOARD - (Component side) S805 VR201 JW024 JW065 JW066 VR101 TEST TONE 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. 3-1. SIDE PLATE AND BOTTOM PLATE 1 Two screws (BTP3x8) 2 Three screws (BTP3x8) 3 Bottom plate 4 Screw (BTP3x8) 6 Two screws (BTP3x8) 5 Filter board 9 Side panel (L) 7 Screw (BTP3x8) 0 Two screws (BTP3x8)