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.
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ICD-B25 SECTION 1 GENERAL This section is extracted from instruction manual.
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...
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...
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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.)
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...
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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...
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.
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.
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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...