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Sony ICD-B7 Service Manual
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Sony ICD-B7 Service Manual

Sony ICD-B7 Service Manual

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SERVICE MANUAL
Ver 1.0 2003. 01
Sony Corporation
9-877-003-01
2003A0400-1
Personal Audio Company
© 2003. 01
Published by Sony Engineering Corporation
SPECIFICATIONS
Recording media
Built-in flash memory, Monaural recording
Recording time
150 minutes
Frequency response
150 Hz - 3,500 Hz
Speaker
approx. 3.2 cm (1
Power output
150 mW
Input/Output
• Earphone jack (minijack) for 8 - 300 ohms
earphone/headphones
• Microphone jack (minijack, monaural)
Plug in power
Minimum input level 0.6 mV
3 kilohms or lower impedance microphone
Power requirements
Two LR03 (size AAA) alkaline batteries: 3 V DC
Dimensions (w/h/d) (not incl. projecting parts and controls)
44.5 × 105.3 × 14.0 mm (1
Mass (incl. batteries)
68 g (2.4 oz)
Design and specifications are subject to change without notice.
ICD-B7
Canadian Model
in.) dia.
5/16
× 4
×
in.)
13/16
1/4
9/16
US Model
AEP Model
Tourist Model
IC RECORDER
1

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  • Page 1 44.5 × 105.3 × 14.0 mm (1 × 4 × in.) 13/16 9/16 Mass (incl. batteries) 68 g (2.4 oz) Design and specifications are subject to change without notice. IC RECORDER Sony Corporation 9-877-003-01 2003A0400-1 Personal Audio Company © 2003. 01 Published by Sony Engineering Corporation...

  • Page 2: Table Of Contents

    ICD-B7 Notes on Chip Component Replacement TABLE OF CONTENTS • Never reuse a disconnected chip component. • Notice that the minus side of a tantalum capacitor may be dam- 1. GENERAL aged by heat. Index to Parts and Controls ............. 3 2.
  • Page 3 ICD-B7 SECTION 1 GENERAL This section is extracted from instruction manual.

  • Page 4: Disassembly

    ICD-B7 SECTION 2 DISASSEMBLY Note : This set can be disassemble according to the following sequence. 2-1. UPPER LID ASSY (Page 4) 2-2. F-SW BOARD, P-SW BOARD (Page 5) 2-3. MAIN BOARD (Page 5) Note : Follow the disassembly procedure in the numerical order given.

  • Page 5: F-Sw Board, P-Sw Board

    ICD-B7 2-2. F-SW BOARD, P-SW BOARD 6 P-SW board 5 F-SW board 4 Removal the five solders. 1 Removal the solder. case assy 2 CN701 2-3. MAIN BOARD 3 B 1.7x4 2 speaker (SP101) 1 Removal the two solders. 6 MAIN board...

  • Page 6: Diagrams

    ICD-B7 SECTION 3 DIAGRAMS 3-1. IC PIN DESCRIPTION • IC703 µPD780308GC-A58-8EU (SYSTEM CONTROL) Pin No. Pin Name Pin Description 1 to 3 KEY1 to 3 Key input XHOLD Hold switch input AMPPOW Power down control output for power amplifier IC (IC103).
  • Page 7 ICD-B7 Pin No. Pin Name Pin Description WAKEUP WAKE UP signal input RTCINT Real time clock (2 Hz) signal input FLMPOW Flash memory power ON/OFF output DSPIFACK I/F acknowledge signal input for DSP IC (IC101). LMUTE Line mute ON/OFF signal output...
  • Page 8 ICD-B7 MEMO...

  • Page 9: Block Diagram

    ICD-B7 3-2. BLOCK DIAGRAM A/D,D/A CONVERTER DSP IC101 MIC101 IC103 POWER AMP SP101 47 MIP LOUT0 J101 RV101 SPEAKER 46 MIN (PLUG IN POWER) VCCA +3.3V (VCC A) Q101 BYPASS MUTE +3.3V (VCC B) 25 27 58 24 54 X101 4.02MHz...

  • Page 10: Schematic Diagram - Main Section

    ICD-B7 3-3. SCHEMATIC DIAGRAM — MAIN SECTION — • Refer to page 14 for Common Note on Schematic Diagrams, Waveforms and IC Block Diagrams. IC B/D C127 IC103 TP104 SP101 TP105 TP501 TP503 C128 C123 R120 TP107 R125 C125 AGP100...

  • Page 11: Printed Wiring Board - Main Section

    ICD-B7 3-4. PRINTED WIRING BOARD — MAIN SECTION — • Refer to page 14 for Common Note on Printed Wiring Boards. : Uses unleaded solder. MAIN BOARD ( SIDE A ) • Semiconductor C127 R134 R129 R128 Location TP104 TP101...

  • Page 12: Printed Wiring Board - F-Sw Section

    ICD-B7 3-5. PRINTED WIRING BOARD — F-SW SECTION — • Refer to page 14 for Common Note on Printed Wiring Boards. : Uses unleaded solder. F-SW BOARD ( SIDE A ) TP741 MAIN TP742 TP743 CN501 BOARD CN701 (Page 11)

  • Page 13: Printed Wiring Board - P-Sw Section

    ICD-B7 : Uses unleaded solder. 3-6. PRINTED WIRING BOARD — P-SW SECTION — • Refer to page 14 for Common Note on Printed Wiring Boards. P-SW BOARD ( SIDE A ) TP754 TP753 TP755 R748 R752 R749 R751 R750 TP751...

  • Page 14: Ic Block Diagrams

    ICD-B7 • Waveforms 3-7. IC BLOCK DIAGRAMS THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS. 0.5V/div 0.1µsec/div (In addition to this, the necessary note is printed in each block.) 1.0Vp-p Common Note on Schematic Diagrams: IC103 LM4890MMX 4.02MHz...

  • Page 15: Exploded Views

    ICD-B7 SECTION 4 EXPLODED VIEWS NOTE: • The mechanical parts with no reference • Color Indication of Appearance Parts number in the exploded views are not supplied. Example : • Items marked “*” are not stocked since KNOB, BALANCE (WHITE) ... (RED) they are seldom required for routine service.

  • Page 16: Main Board Section

    ICD-B7 4-2. MAIN BOARD SECTION LCD701 MIC101 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark * 51 A-3347-945-A MAIN BOARD, COMPLETE 3-250-351-01 LARGE (LCD), RETAINER * 52 1-685-025-11 P-SW BOARD 3-250-352-01 HOLDER (LCD) 3-250-362-01 TERMINAL (–), BATTERY...

  • Page 17: Electrical Parts List

    ICD-B7 SECTION 5 F-SW MAIN ELECTRICAL PARTS LIST NOTE: When indicating parts by reference • Due to standardization, replacements in • Items marked “*” are not stocked since number, please include the board. the parts list may be different from the they are seldom required for routine service.
  • Page 18 ICD-B7 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark FB103 1-469-084-21 INDUCTOR, FERRITE BEAD R126 1-218-961-11 RES-CHIP 4.7K 1/16W FB104 1-469-084-21 INDUCTOR, FERRITE BEAD R127 1-218-961-11 RES-CHIP 4.7K 1/16W R128 1-218-961-11 RES-CHIP 4.7K 1/16W < IC >...
  • Page 19 ICD-B7 MAIN P-SW Ref. No. Part No. Description Remark < VIBRATOR > X101 1-795-627-21 VIBRATOR, CERAMIC (CHIP TYPE) (4.02MHz) X701 1-795-628-21 VIBRATOR, CERAMIC (CHIP TYPE) (5MHz) X702 1-767-994-23 VIBRATOR, CRYSTAL (32.768kHz) ************************************************************* 1-685-025-11 P-SW BOARD *********** < RESISTOR > R748 1-218-957-11 RES-CHIP 2.2K...
  • Page 20 ICD-B7 REVISION HISTORY Clicking the version allows you to jump to the revised page. Also, clicking the version at the upper on the revised page allows you to jump to the next revised page. Ver. Date Description of Revision 2003. 01...

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