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CDX-2250/3500 SERVICE MANUAL US Model Canadian Model CDX-2250 E Model CDX-3500 Photo: CDX-2250 SPECIFICATIONS Model Name Using Similar Mechanism CDX-2180 CD Drive Mechanism Type MG-363X-121 Optical Pick-up Name KSS-521A FM/AM COMPACT DISC PLAYER MICROFILM – 1 –...
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE ! 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.
TABLE OF CONTENTS 1. GENERAL Location of Controls ..............4 Getting Started ................4 CD Player .................. 5 Radio ..................5 Other Functions ................. 6 Additional Information .............. 6 Connections ................8 2. DISASSEMBLY 2-1. Cover ASSY ................ 10 2-2. Front Panel ASSY ............... 10 2-3.
2-3. DISPLAY BOARD 1 P 2x8 4 DISPLAY board 2 P 2x8 3 claws 2-4. CD MECHANISM BLOCK 7 PTT 2.6x6 2 PTT 2.6x6 8 bracket (M/D) 3 PTT 2.6x6 5 CD mechanism block 6 PTT 2.6x6 4 CNP701 1 PTT 2.6x6 –...
2-7. CHASSIS (T) SUB ASSY 3 P 2x3 2 P 2x3 5 chassis (T) sub assy 1 Unsolder the lead wires. 4 P 2x3 white black 2-8. LEVER ASSY 5 guide (disc) 6 lever (R) assy 3 tension spring (LR) 7 lever (L) assy 1 PS 2x4 2 DISCIN board...
2-11. CHASSIS (OP) (O/S) ASSY 7 chassis (OP) (O/S) assy 8 compression spring (FL) 1 tension spring (angle) 9 compression spring (FL) 2 tension spring (KR1) 5 Fit lever (D) in the direction of the arrow. 6 Turn loading ring in the direction of the arrow.
SECTION 3 ELECTRICAL ADJUSTMENTS TUNER SECTION 0 dB = 1 µV FM SENS/IF Adjustment Setting: SOURCE button : FMI Cautions during repair D-BASS switch : OFF When the tuner unit is defective, replace it by a new one because Frequency Select switch (E model) : FM 200K its internal block is difficult to repair.
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AM Auto Scan/Stop Level Adjustment Setting: digital voltmeter SOURCE n MODE button : AM D-BASS switch : OFF Frequency Select switch (E model) : AM 10K S-METER OUT – AM RF signal level dummy antenna generator meter antenna terminal 30 Ω 15 pF 4 Ω...
Focus Gain Adjustment (Coarse adjustment) CD SECTION This adjustment is not required unless the following parts are replaced: • Optical pick-up Note: • 1. CD Block basically constructed to operate without adjustment. Therefore, check each item in order given. Procedure: 2.
SECTION 4 DIAGRAMS 4-1. IC PIN DESCRIPTION • IC801 µPD17705GC-537-3B9 (SYSTEM CONTROL) Pin No. Pin Name Pin Description SIRCS SIRCS input (A/D) IN-SW CD mechanism position detection D-SW CD mechanism position detection SELF-SW CD mechanism position detection L-SW LIMIT switch LM-EJ Loading motor control (Eject direction) LM-LOD...
Pin No. Pin Name Pin Description ILL-ON Illumination output C.ALARM Caution alarm select input (Used/Not used) Not used (Connect to ground) — Fixed at “H” in this set. LCD-CE LCD drive chip select output EZ-SEL SHIFT + input SENS Information input from servo IC. Focus OK input LD-ON Laser diode control...
CDX-2250/3500 4-3. PRINTED WIRING BOARDS — CD MECHANISM SECTION — • Semiconductor Location Ref. No. Location Note: • X : parts extracted from the component side. • Y : parts extracted from the conductor side. • b : Pattern from the side which enables seeing.
CDX-2250/3500 4-4. SCHEMATIC DIAGRAM — CD MECHANISM SECTION — • Refer to page 22 for Waveforms and Note and page 37 for IC Block Diagrams. (Page – 25 – – 26 –...
CDX-2250/3500 4-5. PRINTED WIRING BOARD — DISPLAY SECTION — Note: • Semiconductor Location • : Through hole. ® Ref. No. Location Ref. No. Location Ref. No. Location • b : Pattern from the side which enables seeing. (D551) B-10 D566 D574 (The other layer’s patterns are not indicated.)
CDX-2250/3500 4-6. SCHEMATIC DIAGRAM — DISPLAY SECTION — (Page 36) Note: • C : panel designation. • All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics • Voltage is dc with respect to ground under no-signal and tantalums.
CDX-2250/3500 4-8. SCHEMATIC DIAGRAM — MAIN SECTION (1/2) — (Page 26) Note: • All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums. • All resistors are in Ω and W or less unless otherwise specified.
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IC2 CXA1782BQ 27 26 25 LEVEL S MIRR SENS RF IV AMP1 DFCT C.OUT XRST RF IV AMP2 FE BIAS IIL DATA REGISTER INPUT SHIFT REGISTER DATA ADDRESS DECODER OUTPUT DECODER TOG1-3 FS1-4 TG1-2 TM1-7 PS1-4 F IV AMP BAL1-3 FZC COMP E IV AMP TE AMP...
5-5. CD MECHANISM SECTION (3) (MG-363X-121) M901 M902 Les composants identifiés par une The components identified by mark ! or dotted line with mark marque ! sont critiques pour la ! are critical for safety. sécurité. Replace only with part number Ne les remplacer que par une specified.