Sony ICD-B25 Service Manual
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Sony ICD-B25 Service Manual

Sony ICD-B25 Service Manual

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SERVICE MANUAL
Ver 1.0 2002. 03
Sony Corporation
9-873-644-01
2002C0400-1
Personal Audio Company
© 2002. 03
Published by Sony Engineering Corporation
SPECIFICATIONS
Recording media
Built-in flash memory, Monaural recording
Recording time
127 minutes (SP)/339 minutes (LP)
Frequency response
SP: 250 Hz - 7,300 Hz
LP: 300 Hz - 3,500 Hz
Speaker
approx. 3.2 cm (1
Power output
300 mW
Input/Output
• Earphone jack (minijack) for 16 - 300 ohms
earphone/headphones
• Microphone jack (minijack, monaural)
Plug in power
Minimum input level 0.6 mV
3 kilohms or lower impedance microphone
Playback speed control
FAST +30%, SLOW –15%
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)
Optional accessories
Electret Condenser Microphone ECM-Z60,
ECM-T115, ECM-DM5P
Connecting cord RK-G64
Your dealer may not handle some of the above listed optional accessories.
Please ask the dealer for detailed information.
Design and specifications are subject to change without notice.
ICD-B25
Canadian Model
in.) dia.
5/16
× 4
×
in.)
13/16
1/4
9/16
US Model
AEP Model
UK Model
E Model
Tourist Model
IC RECORDER
1

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  • Page 1 Your dealer may not handle some of the above listed optional accessories. Please ask the dealer for detailed information. Design and specifications are subject to change without notice. IC RECORDER Sony Corporation 9-873-644-01 2002C0400-1 Personal Audio Company © 2002. 03 Published by Sony Engineering Corporation...

  • Page 2: Table Of Contents

    LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE 0 SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS QUE PAR DES PIÈCES SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
  • Page 3 ICD-B25 SECTION 1 GENERAL This section is extracted from instruction manual.

  • Page 4: Disassembly

    ICD-B25 SECTION 2 DISASSEMBLY Note : This set can be disassemble according to the following sequence. Upper Lid Sub Block Assy F-SW Board Main Board Note : Follow the disassembly procedure in the numerical order given. 2-1. UPPER LID SUB BLOCK ASSY...

  • Page 5: Main Board

    ICD-B25 2-3. MAIN BOARD 3 screw (B1.7x10) 2 speaker 1 Removal the solders. 6 MAIN board 4 claw case assy 5 claw...

  • Page 6: Diagrams

    ICD-B25 SECTION 3 DIAGRAMS 3-1. IC PIN DESCRIPTION • IC712 MB90523APFF-G-122-BND (SYSTEM CONTROL) Pin No. Pin Name Pin Description RTCCE Real-time clock chip enable signal output BEEP Beep signal output XFLMRE Flash memory read enable signal output XFLMWE Flash memory write enable signal output...
  • Page 7 ICD-B25 Pin No. Pin Name Pin Description 75 to 81 SEG25 to 31 LCD segment signal output 82 to 85 V0 to 3 — LCD driver reference power supply pin XHSTBY Hardware standby signal input Operation mode signal input 2 Operation mode signal input 1 (Connect to VCC.)

  • Page 8: Block Diagram

    ICD-B25 3-2. BLOCK DIAGRAM MIC101 IC101 IC102 MAIN BOARD IC107 IC112 MIC AMP ALC AMP A/D, D/A CONVERTER Q105 AVCC IC110 BUFFER J101 POWER AMP VIN+ VOUT VOUT VIN- VOUT SP101 RV101 VIN- IC103 SPEAKER VOR CONTROL PDWN Q101 INPUT OUT1...
  • Page 9 ICD-B25 • Waveforms THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS. 0.5V/div 50nsec/div (In addition to this, the necessary note is printed in each block.) 1.3Vp-p Common Note on Schematic Diagrams: • All capacitors are in µF unless otherwise noted. pF: µµF 4.096MHz...

  • Page 10: Printed Wiring Board - Main Section

    ICD-B25 3-3. PRINTED WIRING BOARD — MAIN SECTION — : Uses unleaded solder. MAIN BOARD ( SIDE A ) Q105 Q102 R101 TP115 Q103 R106 R107 C140 C117 R105 TP704 C175 C105 TP101 TP712 C102 C104 J101 TP703 S702 PLAY SPEED...
  • Page 11 ICD-B25 : Uses unleaded solder. LCD101 LIQUID CRYSTAL DISPLAY PANEL F-SW BOARD CN501 (Page 17) MAIN BOARD ( SIDE B ) R763 R732 C744 Q707 C743 SP101 CN702 C742 SPEAKER R757 C749 C750 IC715 R716 C740 C739 MIC101 R794 R703...

  • Page 12: Schematic Diagram - Main Section (1/3)

    ICD-B25 3-4. SCHEMATIC DIAGRAM — MAIN SECTION (1/3) — • Refer to page 20 for IC Block Diagrams. IC B/D R187 C171 R186 IC112 IC107 R181 C125 C122 C167 R133 C168 C169 R183 R184 C123 Q107 C115 C124 Q108 C127...

  • Page 13: Schematic Diagram - Main Section (2/3)

    ICD-B25 3-5. SCHEMATIC DIAGRAM — MAIN SECTION (2/3) — • Refer to page 9 for Waveform. LCD101 R725 IC710 C726 C763 R726 C749 R757 Q702 CN702 R711 X701 C727 R714 C739 R767 R758 R760 TP706 IC706 C709 R770 R719 TP704...

  • Page 14: Schematic Diagram - Main Section (3/3)

    ICD-B25 3-6. SCHEMATIC DIAGRAM — MAIN SECTION (3/3) — • Refer to page 9 for Waveform. • Refer to page 20 for IC Block Diagrams. (Page 12) C175 Q707 C754 R732 R756 R143 R144 C132 R182 Q102 RV101 IC B/D...

  • Page 15: Schematic Diagram - F-Sw Section

    ICD-B25 3-7. SCHEMATIC DIAGRAM — F-SW SECTION — R701 R702 R703 R704 S701 S702 S703 S704 S705 R705 S706 S707 TP506 TP508 TP507 R706 D701 TP511 IC502 CN501 D702 R707 C503 R524 R523 TP510 TP509 L502 D502 TP504 TP513 Q503...

  • Page 16: Printed Wiring Board - F-Sw Section

    ICD-B25 3-8. PRINTED WIRING BOARD — F-SW SECTION — : Uses unleaded solder. F-SW BOARD ( SIDE A ) S705 S704 S703 INDEX FOLDER REPEAT R704 R703 TP512 TP513 R702 DRY BATTERY 1-680-351- SIZE"AAA" (12) S702 (IEC DESIGNATION LR03) DISPLAY...
  • Page 17 ICD-B25 : Uses unleaded solder. F-SW BOARD ( SIDE B ) L502 Q503 IC508 C504 C517 D502 R524 IC506 R523 (BACK LIGHT) IC505 • Semiconductor IC504 Location 3 2 1 CN501 Ref. No. Location D502 D701 D702 IC502 IC504 IC505...

  • Page 18: Printed Wiring Board - P-Sw Section

    ICD-B25 3-9. PRINTED WIRING BOARD — P-SW SECTION — : Uses unleaded solder. P-SW BOARD ( SIDE A ) S726 HOLD R726 S725 S723 – S722 /> S721 S724 PAUSE/X ( SELECT ) REC/STOP /B • x 1-680-352- (12) PUSH B...

  • Page 19: Schematic Diagram - P-Sw Section

    ICD-B25 3-10. SCHEMATIC DIAGRAM — P-SW SECTION — W707 S725 S724 S723 S722 S721 W702 S726 R724 R721 R722 W703 R723 R725 (Page 14) W705 R726 W701 W704 W706...
  • Page 20 ICD-B25 • IC Block Diagrams IC102 AN6123MS-TXL IC105, 106 TC7S04FU (TE85R) IC716 RS5C348A-E2 IN A OUT Y 32 kHz 32KOUT OUTPUT ALARM W REGISTER COMPARATOR CONTROL (WEEK, MIN, HOUR) ALARM D REGISTER COMPARATOR (MIN, HOUR) TIMER COUNTER OSCIN DIVIDER SEC, MIN, HOUR, WEEK,...

  • Page 21: Exploded Views

    ICD-B25 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 22: Main Board Section

    ICD-B25 4-2. MAIN BOARD SECTION LCD101 MIC101 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark * 51 1-680-352-12 P-SW BOARD 3-224-516-02 HOLDER (LCD) * 52 A-3323-707-A MAIN BOARD, COMPLETE 3-224-512-01 CUSHION, MICROPHONE 3-224-514-01 TERMINAL (–), BATTERY...

  • Page 23: Electrical Parts List

    ICD-B25 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 24 ICD-B25 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C110 1-117-919-11 TANTAL. CHIP 10uF 6.3V C709 1-115-156-11 CERAMIC CHIP C111 1-125-837-11 CERAMIC CHIP 6.3V C726 1-164-939-11 CERAMIC CHIP 0.0022uF 10% C112 1-164-937-11 CERAMIC CHIP 0.001uF...
  • Page 25 ICD-B25 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < JACK > R150 1-218-985-11 RES-CHIP 470K 1/16W R152 1-218-965-11 RES-CHIP 1/16W J101 1-784-848-31 JACK (MIC) R153 1-218-953-11 RES-CHIP 1/16W J201 1-784-848-31 JACK (EAR) R155 1-218-953-11 RES-CHIP...
  • Page 26 ICD-B25 MAIN P-SW Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R760 1-218-965-11 RES-CHIP 1/16W MISCELLANEOUS R762 1-218-981-11 RES-CHIP 220K 1/16W *************** R763 1-218-953-11 RES-CHIP 1/16W R764 1-218-981-11 RES-CHIP 220K 1/16W MIC101 1-476-484-11 MICROPHONE UNIT, ELECTRET CAP...
  • Page 27 ICD-B25 MEMO...
  • Page 28 ICD-B25 REVISION HISTORY Clicking the version allows you to jump to the revised page. Also, clicking the version at the upper right on the revised page allows you to jump to the next revised page. Ver. Date Description of Revision...

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