Sony icd p 320 service manual

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2 ICD-P320 TABLE OF CONTENTS 1. GENERAL ...................................................................... 3 2. DISASSEMBLY 2-1. Case (Front) Assy ............................................................... 4 2-2. MAIN Board ....................................................................... 5 2-3. USB Board ........................................................................\ . 5 3. TEST MODE .................................................................. 6 4. DIAGRAMS 4-1. Block Diagram ................................................................... 9 4-2. Printed Wiring Board -“ MAIN Section -“ ........................ 11 4-3. Schematic Diagram -“ MAIN Section (1/2) -“ .................. 12 4-4. Schematic Diagram -“ MAIN Section (2/2) -“ .................. 13 4-5. Printed Wiring Board -“ USB Section -“ .......................... 14 4-6. Schematic Diagram -“ USB Section -“ .............................. 15 5. EXPLODED VIEWS 5-1. Case (Front) Section ......................................................... 19 5-2. Case (Rear) Section .......................................................... 20 6. ELECTRICAL PARTS LIST ................................... 21 Flexible Circuit Board Repairing -K eep 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. Notes on chip component replacement -N ever 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. - 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. Operating instructiondd

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3 ICD-P320 SECTION 1 GENERAL This section is extracted from instruction manual. Index to Parts and Controls Main unit *There is a tactile dot beside the control to show the direction to turn up the volume. **The button has a tactile dot. MIC (built-in microphone) (microphone) jack Display window DISPLAY/MENU DIVIDE xSTOP zX REC (record) /PAUSE -“ . (review/fast backward) / >+ (cue/fast forward) (SELECT) SpeakerOPR (operation) indicator ERASE VOL (volume) control* HOLD Nx PLAY/STOP (ENTER)** i (earphone) jack Rear Battery compartment Hook for handstrap (not supplied) USB connector Display window Folder indicationRemaining battery indicator Microphone sensitivity Alarm indicator Selected message number REC DATE (recorded date) indication REMAIN indicator Remaining memory indicatorRecording mode indication REC (recording) indicator Repeat play indicator Number of messages in a folder/Menu indication/Counter / Remaining time indication /Recording date indication /Current time indication / Messages EASY-S (Easy Search) indicator