Notes on chip component replacement TABLE OF CONTENTS • Never reuse a disconnected chip component. • Notice that the minus side of a tantalum capacitor may be 1. SERVICE MODE ............. 3 damaged by heat. 2. GENERAL ................4 3. DISASSEMBLY 3-1.
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.
SECTION 3 SECTION 4 DISASSEMBLY ELECTRICAL ADJUSTMENT Note: Follow the disassembly procedure in the numerical order given. Adjustment Location IDLING CURRENT ADJUSTMENT 3-1. SIDE PLATE AND FILTER BOARD - AMPLIFIER BOARD - (Component side) 2 Four screws • Perform adjustments in the HI-VOLTAGE mode. 1 Three screws (BTP3x8) (BTP3x8)
XM-7547 5-4. PRINTED WIRING BOARD – LED/FILTER SECTION – THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS. (In addition to this, the necessary note is printed in each block.) FILTER BOARD For schematic diagrams. Note: JW125 JW108 •...
SECTION 7 AMPLIFIER ELECTRICAL PARTS LIST Note: • Due to standardization, replacements in the parts list • SEMICONDUCTORS When indicating parts by reference In each case, u: µ , for example: may be different from the parts specified in the number, please include the board uA...: µ...
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