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Sony CDX-525RF Service Manual

Compact disc changer system
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See also: Operating Instructions
SERVICE MANUAL
MICROFILM
CDX-525RF
Model Name Using Similar Mechanism
CD Drive Mechanism Type
Optical Pick-up Name
SPECIFICATIONS
COMPACT DISC CHANGER SYSTEM
US Model
Canadian Model
AEP Model
UK Model
E Model
CDX-505RF
MG-250C-137
KSS-521A/J2N
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Summary of Contents for Sony CDX-525RF

  • Page 1 CDX-525RF SERVICE MANUAL US Model Canadian Model AEP Model UK Model E Model Model Name Using Similar Mechanism CDX-505RF CD Drive Mechanism Type MG-250C-137 Optical Pick-up Name KSS-521A/J2N SPECIFICATIONS COMPACT DISC CHANGER SYSTEM MICROFILM...
  • Page 2 CDX-525RF 7-3. SCHEMATIC DIAGRAM – RF Section – • See page 33 for Waveforms. • See page 34 for IC Block Diagrams. (Page 29) The components identified by mark ! or dotted Les composants identifiés par une marque ! sont line with mark ! are critical for safety.
  • Page 3 CDX-525RF 7-6. SCHEMATIC DIAGRAM – MAIN Section (1/2) – • See page 33 for Waveforms. • See page 35 for IC Block Diagrams. (Page 24) – 29 – – 30 –...
  • Page 4 CDX-525RF 7-7. SCHEMATIC DIAGRAM – MAIN Section (2/2) – • See page 33 for Waveforms. • See page 35 for IC Block Diagrams. – 31 – – 32 –...

  • Page 5: Main Board

    • Waveforms – RF Board – – MAIN Board (1/2) – – MAIN Board (2/2) – 1 IC11 #£ (RF O) 1 IC101 @¶ (MDP) 6 IC401 !£ (MCK) 500 mV/DIV, 500 ns/DIV 2.5 Vp-p 6 Vp-p 1.4 Vp-p 7.6 µ s 59.5 ns 2 IC11 2 (FEI) 2 IC101 %º...

  • Page 6: Ic Block Diagrams

    • IC Block Diagrams – RF Board – IC11 CXA1992BR 33 32 31 30 PD 2 PD 1 I-V AMP I-V AMP RF SUMMING FOCUS OK COMPARATOR LASER POWER CONTROL IFB1 – IFB6 PEAK/BOTTOM MIRR HOLD COMPARATOR ↓ PEAK/BOTTOM DEFECT BIAS HOLD FOCUS BIAS...
  • Page 7 IC52 BA6287F OUT1 OUT2 DRIVER DRIVER VREF CONTROL LOGIC POWER SAVE – MAIN Board – IC101 CXD2530Q 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 LRCK WDCK ASYE...
  • Page 8 IC204 BA8272F-E2 IC301 BA6287F OUT1 RESET OUT2 SWITCH DRIVER DRIVER VREF CONTROL LOGIC POWER SAVE IC401 TC9464FN-EL 14 13 MICROCOMPUTER INTERFACE INTERFACE CIRCUIT CIRCUIT DIGITAL FILTER CIRCUIT TIMING ATTENUATOR OPERATIONAL CIRCUIT GENERATOR DEEMPHASIS FILTER CIRCUIT D-∆ MODULATION CIRCUIT TEST OUTPUT OUTPUT CIRCUIT CIRCUIT...

  • Page 9: Ic Pin Function Description

    25 to 29 — Not used (open) System reset signal input from the reset signal generator (IC202) and SONY bus interface (IC204) RESET “L”: reset For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”...
  • Page 10 Pin No. Pin Name Function SCOR Subcode sync (S0+S1) detection signal input from the CXD2530Q (IC101) SENS2 Internal status signal (sense signal) input from the CXA1992BR (IC11) Motor drive signal (elevator up direction) output to the elevator motor drive (IC301) “L”...