Sony icd b 5 service manual

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2 TABLE OF CONTENTS 1. GENERAL Index to Parts and Controls ..................................................... 3 2. DISASSEMBLY 2-1. Upper Lid Assy ................................................................... 4 2-2. F-SW Board, P-SW Board .................................................. 5 2-3. Main Board ......................................................................... 5 3. DIAGRAMS 3-1. IC Pin Description ............................................................... 6 3-2. Block Diagram .................................................................... 9 3-3. Schematic Diagram -“ Main Section -“ ............................... 10 3-4. Printed Wiring Board -“ Main Section -“ ............................ 11 3-5. Printed Wiring Board -“ F-SW Section -“ ........................... 12 3-6. Printed Wiring Board -“ P-SW Section -“ ........................... 13 3-7. IC Block Diagrams ............................................................ 14 4. EXPLODED VIEWS 4-1. Case Section ...................................................................... 15 4-2. Main Board Section .......................................................... 16 5. ELECTRICAL PARTS LIST ......................................... 17 Notes on Chip Component Replacement -Never reuse a disconnected chip component. -Notice that the minus side of a tantalum capacitor may be dam- aged by heat. ICD-B5 - 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 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.

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3 ICD-B5 SECTION 1 GENERAL This section is extracted from instruction manual. Index to Parts and Controls Main unit MIC jack (PLUG IN POWER) EAR (earphone) jack OPR (operation) indicator zREC (record) /STOP X PAUSE - .REVIEW/ >+CUE NxPLAY/STOP- EXECUTE HOLD VOL (volume) MIC (built-in microphone) Display window FOLDER INDEX DISPLAY MIC SENSE (microphone sensitivity) MENU ERASE Speaker STOP Rear Battery compartment Hook for handstrap (not supplied) Display window Selected message number/Mode indication of the menu (ON, OFF, etc.) REC (recording) indicator Remaining battery indicator Remaining memory indicator Counter /Remaining time indication /Recording date indication /Current time indication (15:30, etc.) /Menu indication (ALARM, BEEP, etc.) /Messages (ERASE, HOLD, etc.) Folder indication Alarm indicator Repeat play indicator Microphone sensitivity indication REC DATE (recorded date) indication REMAIN indicator