Sony mdr if 4000 service manual
This is the 30 pages manual for sony mdr if 4000 service manual.
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Extracted text from sony mdr if 4000 service manual (Ocr-read)
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2 MDR-IF4000 TABLE OF CONTENTS Specifications ........................................................................\ .... 1 1. GENERAL ................................................................... 3 2. DISASSEMBLY 2-1. Disassembly Flow ........................................................... 4 2-2. Front Plate (R) Assy ........................................................ 4 2-3. RX Board ........................................................................\ . 5 2-4. Hunger (R) ....................................................................... 5 2-5. Wiring On The Right Side ............................................... 6 2-6. Front Plate (L) Assy ........................................................ 6 2-7. Batt Board ........................................................................\ 7 2-8. Hanger (L) ....................................................................... 7 2-9. Wiring On The Left Side ................................................. 8 2-10. Hunger Lid (L) ................................................................ 8 2-11. Wiring On The SW Board ............................................... 9 2-12. How To Hang The Tension Spring .................................. 9 3. DIAGRAMS 3-1. Circuit Boards Location .................................................. 10 3-2. Block Diagrams ............................................................... 11 3-3. Printed Wiring Board – Receiver Section – .................... 12 3-4. Printed Wiring Board – Power Section – ........................ 13 3-5. Schematic Diagram – Receiver Section – ....................... 14 4. EXPLODED VIEWS 4-1. Housing (L) Assy Section ................................................ 17 4-2. Housing (R) Assy Section ............................................... 18 5. ELECTRICAL PARTS LIST .................................. 19 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. 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. -U nleaded 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 viscous (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. - Repaier DP-IF4000 with MDR-IF4000.
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3 MDR-IF4000 SECTION 1 GENERAL This section is extracted from instruction manual. LOCATING THE CONTROLS 1Ear pad (left) 2Battery case button 3Battery case 4Infrared sensor 5Self-adjusting band 6VOL (Volume) control 7Ear pad (right) 8POWER indicator ! "