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Sony CDX-C90R Service Manual
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Sony CDX-C90R Service Manual

Sony CDX-C90R Service Manual

Fm/mw/lw compact disc player
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SERVICE MANUAL
CD player section
System
Compact disc digital audio
system
Signal-to-noise ratio
109 dB
Frequency response
5 - 20,000 Hz (±1 dB)
Wow and flutter
Below measurable limit
Laser Diode Properties
Material
GaAlAs
Wavelength
780 nm
Emission Duration
Continuous
Less than 44.6 µW*
Laser output power
* This output is the value measured at a distance of
200 mm from the objective lens surface on the Optical
Pick-up Block.
Tuner section
FM
Tuning range
87.5 - 108.0 MHz
Antenna terminal
External antenna connector
Intermediate frequency 10.7 MHz
Usable sensitivity
8 dBf
Selectivity
75 dB at 400 kHz
Signal-to-noise ratio
65 dB (stereo),
68 dB (mono)
Harmonic distortion at 1 kHz
0.3% (stereo),
0.3% (mono)
Separation
35 dB at 1 kHz
Frequency response
20 - 15,000 Hz
MW/LW
Tuning range
MW : 531 - 1,602 kHz
LW : 153 - 281 kHz
Antenna terminal
External antenna connector
Intermediate frequency 10.71 MHz/450 kHz
Sensitivity
MW : 30 dBµV
LW : 33 dBµV
MICROFILM
CDX-C90R
Model Name Using Similar Mechanism
CD Drive Mechanism Type
Optical Pick-up Name

SPECIFICATIONS

General
Outputs
Tone controls
Power requirements
Dimensions
Mounting dimension
Mass
Supplied accessories
Design and specifications are subject to change without
notice.
FM/MW/LW COMPACT DISC PLAYER
– 1 –
AEP Model
UK Model
CDX-C780R
MG-363S-121
KSS-520A
Digital output
Line outputs (3)
Power antenna relay
control lead
Power amplifier control
lead
Telephone ATT control
lead
Illumination control lead
Bass ±8 dB at 100 Hz
Treble ±8 dB at 10 kHz
12 V DC car battery
(negative ground)
Approx. 178 × 50 × 184 mm
(w/h/d)
Approx. 182 × 53 × 163 mm
(w/h/d)
Approx. 1.6 kg
Parts for installation and
connections (1 set)
Rotary remote RM-X90 (1)
Wireless remote RM-X9R (1)
Front panel case (1)

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Summary of Contents for Sony CDX-C90R

  • Page 1: Specifications

    CDX-C90R SERVICE MANUAL AEP Model UK Model Model Name Using Similar Mechanism CDX-C780R CD Drive Mechanism Type MG-363S-121 Optical Pick-up Name KSS-520A SPECIFICATIONS CD player section General System Compact disc digital audio Outputs Digital output system Line outputs (3) Signal-to-noise ratio...

  • Page 2: Ic Pin Descriptions

    SECTION 3 DIAGRAMS 3-1. IC PIN DESCRIPTIONS • IC5 CXP84640-011Q (CD SYSTEM CONTROL) Pin No. Pin Name Pin Description 1 – 5 — Not used in this set. FP OPEN Front panel open detection input FP CLOSE Front panel close control output LINKOFF Bus interface link input (Not used in this set.) DRV OE...
  • Page 3 Pin No. Pin Name Pin Description BU.IN Back-up power detection input BUSON Bus on control input IN SW Disc in switch input (SW1) SELF SW Self switch input (SW2) TX CE EEPROM chip enable output SCK2 Sub Q read clock output Sub Q 80 bit, PCM peak and level data 16 bit input CD DATA CD signal process serial data output...
  • Page 4 • IC501 CXD2548R (DIGITAL SERVO, DIGITAL SIGNAL PROCESSOR) Pin No. Pin Name Pin Description SYSM System mute input (Not used.) RMUT1 R-ch, “0” detection output. (“H” : ON, “L” : OFF) (Not used.) LMUT2 L-ch, “0” detection output. (“H” : ON, “L” : OFF) (Not used.) CKOUT Master clock frequency division output (Not used.) VDD0...
  • Page 5 Pin No. Pin Name Pin Description ASY.O EFM full-swing output (“L” : VSS, “H” : VDD) Center voltage input Focus error signal input Sled error signal input Tracking error signal input Center error signal input RFDC RF signal input Condenser connection pin for LPF time constant of RF signal. ADIO OP amplifier output (Not used.) AVSS3...
  • Page 6 Pin No. Pin Name Pin Description ROUT2 R-ch, LINE output. (Not used.) AIN2 R-ch, OP amplifier input. (Not used.) AOUT2 R-ch, Analog output. (Not used.) AVDD2 — R-ch, Analog power supply. AVSS2 — R-ch, Analog GND. VSS0 — Digital GND –...
  • Page 7 Digital filter latch output DF SO Digital filter serial data output DF CKO Digital filter clock output UNISI Serial data input (for SONY BUS) UNISO Serial data output (for SONY BUS) UNICK Serial clock output (for SONY BUS) — Not used.
  • Page 8 Pin No. Pin Name Pin Description — Power supply pin (+5 V) RAMBU RAM reset detection input TESTIN Test mode setting detection input AD ON Power control output of A/D conversion. 58, 59 RE IN0, 1 Rotary encoder input 0, 1 BOOT Compulsory boot mode input DIMMER...
  • Page 9 Pin No. Pin Name Pin Description SEEKOUT SEEK OUT output AM STIN AM stereo input (Not used in this set.) FM STIN Used in conjunction with stereo input/monaural output (FM mode) SD IN Signal detector input TU ATT Tuner mute output TIR D0 TIR IC data 0 input/output TIR D1...
  • Page 10 • IC500 HD6413002F16 (DISPLAY CONTROL) Pin No. Pin Name Pin Description — Power supply pin (+5 V) SIRCS Remote commander input SIRCS Remote commander input LCD-RST LCD controller reset control output ILL ON LCD controller power supply control output EL ON LCD back light EL power supply control output LCD-ST LCD controller information start request signal output...
  • Page 11 Pin No. Pin Name Pin Description DEC-INT Demodulator LSI initial output (Not used in this set.) ROM-CS PROM chip enable output — UNI-REQ Not used. LINK-OFF BUS interface link output DEC-ON Not used. DEC-CLR Demodulator LSI reset output (Not used in this set.) 97 –...
  • Page 12 CDX-C90R 3-7. SCHEMATIC DIAGRAM — CD MECHANISM SECTION (1/3) — • Refer to page 63 for IC Block Diagrams. (Page 40) • Waveforms (MODE:PLAY) Note: • All capacitors are in µF unless otherwise noted. pF: µµF • Voltage and waveforms are dc with respect to ground 50 WV or less are not indicated except for electrolytics under no-signal conditions.
  • Page 13 CDX-C90R 3-8. SCHEMATIC DIAGRAM — CD MECHANISM SECTION (2/3) — • Refer to page 63 for IC Block Diagrams. (Page 38) Note: • All capacitors are in µF unless otherwise noted. pF: µµF • U : B+ Line. • Power voltage is dc 14.4V and fed with regulated dc power 50 WV or less are not indicated except for electrolytics and tantalums.
  • Page 14 CDX-C90R 3-9. SCHEMATIC DIAGRAM — CD MECHANISM SECTION (3/3) — • Refer to page 63 for IC Block Diagrams. (Page 53) Note: • All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums.
  • Page 15 CDX-C90R 3-11. SCHEMATIC DIAGRAM — AUDIO SECTION (1/2) — • Refer to page 65 for IC Block Diagrams. (Page 53) (Page 56) Note: • All capacitors are in µF unless otherwise noted. pF: µµF • Voltage is dc with respect to ground under no-signal 50 WV or less are not indicated except for electrolytics (detuned) condition.
  • Page 16 CDX-C90R 3-12. SCHEMATIC DIAGRAM — AUDIO SECTION (2/2) — (Page 53) 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.
  • Page 17 CDX-C90R 3-14. SCHEMATIC DIAGRAM — MAIN SECTION (1/4) — • Refer to page 48 for Note and Refer to page 63 for IC Block Diagrams. (Page 42) (Page 48) (Page 45) – 53 – – 54 –...
  • Page 18 CDX-C90R 3-15. SCHEMATIC DIAGRAM — MAIN SECTION (2/4) — • Refer to page 48 for Note and Refer to page 66 for IC Block Diagrams. (Page 45) (Page 61) (Page 58) – 55 – – 56 –...
  • Page 19 CDX-C90R 3-16. SCHEMATIC DIAGRAM — MAIN SECTION (3/4) — • Refer to page 48 for Note and Refer to page 67 for IC Block Diagrams. (Page 55) – 57 – – 58 –...
  • Page 20 CDX-C90R 3-17. SCHEMATIC DIAGRAM — MAIN SECTION (4/4) — • Refer to page 48 for Note and Refer to page 66 for IC Block Diagrams. (Page 56) (Page 62) – 59 – – 60 –...

  • Page 21: Printed Wiring Board - El Section

    CDX-C90R 3-18. PRINTED WIRING BOARD — EL SECTION — (Page 52) Note: • X : parts extracted from the component side. • : Through hole. • b : Pattern from the side which enables seeing. (The other layer’s patterns are not indicated.)

  • Page 22: Printed Wiring Board - Sensor Section

    3-20. PRINTED WIRING BOARD — SENSOR SECTION — (Page 49) Note: • X : parts extracted from the component side. • : Through hole. • b : Pattern from the side which enables seeing. (The other layer’s patterns are not indicated.) Caution: Pattern face side: Parts on the pattern face side seen from the (Side B)

  • Page 23: Ic Block Diagrams

    • IC Block Diagrams IC1 CXA1791N-T4 (SERVO BOARD) IC6 LB1638MTP-T1 N.C. VREF LD AMP PD AMP 1.25V OUT1 20 VCC – – 19 APC ON OUT2 18 RFI – – 17 RFO N.C. SUMMING AMP IV AMP1 – – 16 FE FOCUS IC551 LC89170M-TLM IV AMP2...
  • Page 24 IC4 MB814400C-70PFTN (SERVO BOARD) IC601 BA6195FP-YT2 25 24 23 22 21 16 15 THERMAL SHUT DOWN WRITE DRIVER DATA INPUT DATA OUTPUT CLOCK MUTE BUFFER BUFFER GENERATOR LEVEL SHIFT – – – CLOCK GENERATOR 4M BIT COLUMN SENSE AMP MEMORY DECODER I/O GATE CELL...
  • Page 25 IC1 CXD8679Q (MAIN BOARD) TIMING CIRCUIT IF SELD S / P INAF "0" DETECT IF SELC OVFLAG MUTE CIRCUIT MUTER MUTEL SBCKI MODE 4BIT DATA 3rd order L . I . P. NOISE SDATAR MTPOL SHAPER BITSTREAM x 0.75 SDATAL DRPOL DITHER MODE...
  • Page 26 IC102 CXA1946BR IC302 BA8270F-E2 BUS ON BUS ON SWITCH 35 34 30 29 28 27 26 RESET SWITCH 24 FNTO1 VOLUME VOLUME BUS ON LOUD TONE FADER 8dB STEP 1dB STEP 23 REO1 CLK IN BATTERY BATT BU IN GAIN12 SWITCH VCTBUFF GAIN11...
  • Page 27 IC600 BA6285FP-E2 IC721 BU2624FV-E2 XOUT PHASE VREF REFERENCE DIVIDER MAIN FMIN PRESCALER CONTROL COUNT DRIVER DRIVER SHIFT REGISTER LATCH AMIN IF COUNT 20BIT COUNT IFIN IC761 µPD4066BG IC851 TA2051FN(EL) 24 23 22 21 20 14 13 NOISE FILTER NOISE SOM1 GATE SOM2 MAIN...
  • Page 28 IC901 MSM6688GS-2K TIMING DATA CONTROLLER MCU I/F REGISTER SADX CONTROLLER SADY BUSY PDWN STATUS REGISTER TEST TEST ACON ADDRESS TEST RSEL2 CONTROLLER MCUM RSEL1 ADPCM DGND ANALYZER/ AGND SYNTHESIZER TEST TEST 12BIT CIRCUIT TEST TEST 12BIT CIRCUIT 17 18 19 20 21 22 23 24 IC951 SAA6588 POWER SUPPLY PAUSE...