Sony dr bt 1 service manual
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Extracted text from sony dr bt 1 service manual (Ocr-read)
Page 1
DR-BT1/BT1K 2 TABLE OF CONTENTS 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. -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. 1. SERVICING NOTES ........................................................ 3 2. GENERAL ........................................................................\ ... 3 3. DIAGRAMS 3-1. Block Diagrams ··················\ ··················\ ··················\ ······ 5 3-2. Printed Wiring Boards – Headset Board– ··················\ ·· 6 3-3. Schematic Diagram – Headset Board– ··················\ ······ 7 3-4. Printed Wiring Boards – Adaptor Board (BT1K only)– ··················\ ················ 8 3-5. Schematic Diagram – Adaptor Board (BT1K only)– ··· 9 3-6. Printed Wiring Boards – Charger Board (BT1 only)– ··················\ ················· 10 3-7. Schematic Diagram – Charger Board (BT1 only)– ···· 11 4. EXPLODED VIEWS 4-1. Headset Section ··················\ ··················\ ··················\ ···· 12 4-2. Adaptor Section (BT1K) ··················\ ··················\ ········ 13 4-3. Charger Section (BT1) ··················\ ··················\ ··········· 14 5. ELECTRICAL PARTS LIST ........................................ 15 -MOD2 (bluetooth module), IC7 (+2.8V REG) on HEADSET board cannot be replaced individually. Replace it with HEADSET BOARD, COMPLETE. - MOD1 (bluetooth module) on ADAPTOR board cannot be replaced individually. Replace it with ADAPTOR BOARD, COMPLETE.
Page 2
DR-BT1/BT1K 3 SECTION 1 SERVICING NOTES In case of replacing a nickel hydrogen battery in the adaptor (BT-1K), replace two battery pads and a battery sheet at the same time. two battery padsbattery sheetcabinet (lower ) nickel hydrogen battery SECTION 2 GENERAL This section is extracted from instruction manual. Identifying Bluetooth earset R L 123 4 5 6 7 8 1Hanger 2Multifunction button Controls various functions of the Bluetooth earset. 3LED indicator Indicates the status of the Bluetooth earset. 4VOLUME + 5VOLUME - 6Pipe microphone 7Housing 8Contact terminals Bluetooth earset adaptor (BT1K only) 1 3 45 6 2 1LED indicator Indicates the status of the Bluetooth earset adaptor. 2Power on button 3Pairing / Power off button 4Contact pins 5Belt clip 6DC IN 4.5 V jack Battery charger (BT1 only) 1 2 3 1Contact pins 2Belt clip 3DC IN 4.5 V jack