Sony srf m 97 service manual

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2 SRF-M97 TABLE OF CONTENTS 1. GENERAL ................................................................... 3 2. DISASSEMBLY 2-1. Disassembly Flow ........................................................... 4 2-2. MAIN Board, Cabinet (Front) Assy ................................ 4 2-3. Side Panel Section, Cabinet (Rear) Assy ......................... 5 2-4. AMP Board ...................................................................... 5 3. ELECTRICAL ADJUSTMENTS ......................... 6 4. DIAGRAMS ................................................................. 8 4-1. Schematic Diagram ......................................................... 9 4-2. Printed Wiring Board – MAIN Board – .......................... 10 4-3. Printed Wiring Board – AMP Board – ............................ 11 5. EXPLODED VIEWS 5-1. Cabinet (Front) Section ................................................... 14 5-2. Cabinet (Rear) Section .................................................... 15 6. ELECTRICAL PARTS LIST ................................ 16 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. Flexible Circuit Board Repairing - Keep the temperature of the soldering iron around 270 ˚C during repairing. - Do not touch the soldering iron on the same conductor of the circuit board (within 3 times). - Be careful not to apply force on the conductor when soldering or unsoldering. UNLEADED SOLDER Boards requiring use of unleaded solder are printed with the lead- free mark (LF) indicating the solder contains no lead. (Caution: Some printed circuit boards may not come printed with the lead free mark due to their particular size) : LEAD FREE MARK Unleaded solder has the following characteristics. - Unleaded solder melts at a temperature about 40 °C higher than ordinary solder. Ordinary soldering irons can be used but the iron tip has to be applied to the solder joint for a slightly longer time. Soldering irons using a temperature regulator should be set to about 350 °C. Caution: The printed pattern (copper foil) may peel away if the heated tip is applied for too long, so be careful! - Strong viscosity Unleaded solder is more viscou-s (sticky, less prone to flow) than ordinary solder so use caution not to let solder bridges occur such as on IC pins, etc. - Usable with ordinary solder It is best to use only unleaded solder but unleaded solder may also be added to ordinary solder.