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CDX-C90 SERVICE MANUAL US Model E Model Ver 1.1 2001. 08 Model Name Using Similar Mechanism CDX-C680/C780 SPECIFICATIONS CD Drive Mechanism Type MG-363S-121 Optical Pick-up Name KSS-520A AUDIO POWER SPECIFICATIONS (US model) POWER OUTPUT AND TOTAL HARMONIC DISTORTION 19 watts per channel minimum continuous average power into 4 ohms, 4 channels driven from 20 Hz to 20 kHz with no more than 1 % total harmonic distortion.
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COMPONENTS IDENTIFIED BY MARK ! OR DOTTED LINE WITH MARK ! ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
TABLE OF CONTENTS 1. GENERAL 3. ELECTRICAL ADJUSTMENTS Initial settings ................4 CD Section ................44 Setting the clock ..............5 Tuner Section ................. 44 Using the main panel controls ..........6 Basic oprations ................ 7 4. DIAGRAMS Using the rotary remote ............8 4-1.
2-5. MD ASSY 7 MD assy 5 CN101 3 PTT 2.6x4 1 Slide the base panel in the direction of the arrow. 6 CN3 4 CN1 2 PTT 2.6x4 2-6. AUDIO BOARD 2 BVTT 2x4 3 AUDIO board 1 BVTT 2x4 –...
2-7. BRACKET (MD) 3 bracket (MD) 2 PTT 2.6x4 5 COVER (MD) 1 PTT 2.6x4 4 PTT 2.6x4 2-8. MOTOR BLOCK 3 PTT 2.6x4 6 motor block 5 shaft 2 PTT 2.6x4 1 CN600 4 P 2X2.5 – 38 –...
2-13. CHASSIS (T) SUB ASSY 1 P 2x3 2 P 2x3 3 chassis (T) sub assy 2-14. LEVER ASSY 5 guide (disc) 6 lever (R) assy 3 tension spring (LR) 7 lever (L) assy 1 PS 2x4 2 DISC IN SW board 4 claws –...
2-17. CHASSIS (OP) (O/S) ASSY 6 chassis (OP) (O/S) assy 8 compression spring (FL) 1 tension spring (angle) 7 compression spring (FL) 4 Fit lever (D) in the direction of the arrow. 5 Turn loading ring in the direction of the arrow. 3 damper (T) 2 damper (T) 2-18.
SECTION 3 ELECTRICAL ADJUSTMENTS CD SECTION FM Auto Scan/Stop Level Adjustment Setting : CD section adjustments are done automatically in this set. SOURCE button : FM 0 dB = 1 µV TUNER SECTION FM RF signal Cautions during repair generator When the tuner unit is defective, replace it by a new one antenna terminal...
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Ver 1.1 FM Stereo Separation Adjustment (WIDE) FM Stereo Separation Adjustment (NARROW) Setting : Setting : SOURCE button : FM SOURCE button : FM FM RF signal FM RF signal generator generator level meter level meter antenna antenna terminal 10 k Ω terminal 10 k Ω...
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AM Auto Scan/Stop Level Adjustment Adjustment Location : tuner unit (TU701) Setting : SOURCE n MODE button : AM –set upper view– 30 Ω 15 pF 65 pF AM RF signal generator AM dummy antenna (50 Ω ) TU701 antenna AM AUTO SCAN/ terminal Carrier frequency : 1000 kHz...
SECTION 4 DIAGRAMS 4-1. 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...
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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...
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• 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...
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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...
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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 –...
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• IC300 MB90F574PFV-G-139-BND (SYSTEM CONTROL) Pin No. Pin Name Pin Description TIR WR TIR IC data write output (Not used in this set.) TIR RD TIR IC data read output (Not used in this set.) TIR CE TIR IC data chip enable output (Not used in this set.) TIR CE XTIR IC data chip enable output (Not used in this set.) TIR BUSY...
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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...
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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 (Not used in this set.) TIR D0 TIR IC data 0 input/output (Not used in this set.) TIR D1...
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• 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...
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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 –...
CDX-C90 4-2. BLOCK DIAGRAM — CD SECTION — DRAM CONTROLLER DIGITAL SERVO/ MD 5V OPTICAL PICK-UP RF AMP, LD-APC ERROR AMP DIGITAL SIGNAL PROCESSOR (DIGITAL OUT) DIGITAL FILTER L.P.F KSS-520A D/A CONVERTER DOUT IC501 MAIN DATA 3 PD1 59 RFDC...
CDX-C90 4-4. BLOCK DIAGRAM — DISPLAY SECTION — SYSTEM CONTROL DISPLAY CONTROL DISPLAY SRAM IC300(2/2) CNJ301 IC500 IC504 (BUS CONTROL IN) SIRCS SRAM-CS KEYIN0 LINK-OFF KEYIN1 SRAM RESET Q309 S1–19,S1A,LSW1 SIRCS IC301 CONTROL KEY DET D300,301 Q308 RAMBU BU 5V...
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• 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...
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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 SENSE AMP COLUMN MEMORY DECODER I/O GATE CELL...
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IC1 CXD8679Q (MAIN BOARD) TIMING CIRCUIT IF SELD S / P INAF "0" DETECT IF SELC OVFLAG MUTE CIRCUIT MUTER SBCKI MUTEL MODE 4BIT DATA 3rd order L . I . P. NOISE MTPOL SDATAR SHAPER BITSTREAM x 0.75 SDATAL DRPOL DITHER MODE...
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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 GAIN12 BATT BU IN SWITCH VCTBUFF GAIN11...
SECTION 5 EXPLODED VIEWS NOTE: • The mechanical parts with no reference • Color Indication of Appearance Parts The components identified by number in the exploded views are not supplied. Example : mark ! or dotted line with mark. • Items marked “*” are not stocked since KNOB, BALANCE (WHITE) ...
5-6. CD MECHANISM SECTION (3) (MG-363S-121) M901 M902 The components identified by mark ! or dotted line with mark. ! are critical for safety. Replace only with part number specified. Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark * 251...
SECTION 6 AUDIO ELECTRICAL PARTS LIST NOTE: • Due to standardization, replacements in • Items marked “*” are not stocked since The components identified by the parts list may be different from the they are seldom required for routine service. mark ! or dotted line with mark.
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AUDIO DISC IN SW Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < TRANSISTOR > R146 1-260-008-11 CARBON MELF 1/8W R147 1-216-033-00 METAL CHIP 1/10W Q101 8-729-921-25 TRANSISTOR FMC2 R148 1-216-033-00 METAL CHIP 1/10W Q102 8-729-920-21 TRANSISTOR DTC314TKH04 R149 1-259-987-11 CARBON MELF 1/8W...
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MAIN LIMIT SW LOAD SW Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < DIODE > A-3313-956-A MAIN BOARD, COMPLETE (US) A-3317-107-A MAIN BOARD, COMPLETE (E) D550 8-719-978-24 DIODE DTZ-TT11-5.6A ********************* D551 8-719-977-21 DIODE DTZ8.2C D552 8-719-988-62 DIODE 1SS355 X-3376-177-1 BRACKET (TRANSISTOR) ASSY D553...
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SERVO Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C107 1-115-581-11 TANTAL. CHIP 100uF 8-752-374-12 IC CXD2522R-T6 C108 1-164-004-11 CERAMIC CHIP 0.1uF 8-759-427-15 IC MB814400C-70PFTN C109 1-115-581-11 TANTAL. CHIP 100uF 8-752-889-54 IC CXP84640-011Q C110 1-163-251-11 CERAMIC CHIP 100PF 8-759-823-87 IC LB1638M C111...
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SERVO Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R302 1-216-037-00 METAL CHIP 1/10W R604 1-216-097-00 RES,CHIP 100K 1/10W R303 1-216-308-00 METAL CHIP 1/10W R605 1-216-081-00 METAL CHIP 1/10W R304 1-216-683-11 METAL CHIP 0.5% 1/10W R305 1-216-675-11 METAL CHIP 0.5% 1/10W...
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Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark PARTS FOR INSTALLATION AND CONNECTIONS *************** HARDWARE LIST *************************************** *************** 3-009-613-21 FRAME 7-685-851-04 SCREW +BVTT 2X4 (S) 3-025-812-01 COLLAR (90) 7-685-792-09 SCREW +PTT 2.6X6 (S) 3-027-138-01 SPRING, FITTING 7-685-105-19 SCREW +P 2X8 TYPE2 NON-SLIT 3-934-325-01 SCREW, +K (5X8) TAPPING 7-685-790-09 SCREW +PTT 2.6X4 (S)
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CDX-C90 REVISION HISTORY Clicking the version allows you to jump to the revised page. Also, clicking the version at the upper on the revised page allows you to jump to the next revised page. Ver. Date Description of Revision 2001. 08 The CORRECTION-1, 2 are included into Ver 1.1...