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CDX-C8850/C9500 SERVICE MANUAL US Model CDX-C8850 E Model CDX-C9500 Photo: CDX-C9500 SPECIFICATIONS Model Name Using Similar Mechanism CDX-C880 CD Drive Mechanism Type MG-363S-121 AUDIO POWER SPECIFICATIONS (US Model) POWER OUTPUT AND TOTAL HARMONIC DISTORTION Optical Pick-up Name KSS-521A 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 4. DIAGRAMS Location of controls ..............4 4-1. IC Pin Descriptions ............23 Getting Started ................. 4 4-2. Block Diagram –CD Section– ........... 35 Setting the clock ..............5 4-3. Block Diagram –Display Section– ........36 CD Player ................
2-5. CHASSIS (T) SUB ASSY 5 chassis (T) sub assy 1 P 2x3 2 P 2x3 3 P 2x3 4 claw 2-6. 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...
2-9. 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) 2-10.
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 97.9 (MHz) FREQUENCY SELECT switch (CDX-C9500) : FM200K 0 dB = 1 µV TUNER SECTION Cautions during repair FM RF signal When the tuner unit is defective, replace it by a new one...
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FM Stereo Separation Adjustment (WIDE) FM Stereo Separation Adjustment (NARROW) Setting : Setting : SOURCE button : FM1 87.5 (MHz) SOURCE button : FM1 87.5 (MHz) FREQUENCY SELECT switch (CDX-C9500) : FM200K FREQUENCY SELECT switch (CDX-C9500) : FM200K FM RF signal FM RF signal generator generator...
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AM Auto Scan/Stop Level Adjustment Adjustment Location : tuner unit (TU101) Setting : SOURCE n MODE button : AM 1000 (kHz) FREQUENCY SELECT switch (CDX-C9500) : AM10K –set upper view– 30 Ω 15 pF 65 pF AM RF signal generator AM dummy antenna (50 Ω...
SECTION 4 DIAGRAMS 4-1. IC PIN DESCRIPTIONS • IC501 CXD2548R (DIGITAL SERVO, DIGITAL SIGNAL PROCESSOR) (SERVO BOARD) 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”...
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Pin No. Pin Name Pin Description ASY.I Asymmetry comparate voltage input 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.
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Pin No. Pin Name Pin Description AVSS2 — R-ch, Analog GND. ROUT2 R-ch, LINE output. (Not used.) AIN2 R-ch, OP amplifier input. (Connect to GND.) AOUT2 R-ch, Analog output. (Not used.) AVDD2 — R-ch, Analog power supply. AVSS2 — R-ch, Analog GND. VSS0 —...
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• IC5 CXP84640-050Q (CD SYSTEM CONTROL) (SERVO BOARD) 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 Focus/tracking coil/sled motor control output D SW...
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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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• IC300 CXD2727Q (DIGITAL SIGNAL PROCESSOR) (MAIN BOARD) Pin No. Pin Name Pin Description VSS1 — Digital ground 2 – 15 TD0 – 13 Test pin (Normally, fixed at “L”.) 16 – 21 TST0 – 5 Test pin (Normally, fixed at “L”.) 22 –...
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Pin No. Pin Name Pin Description Serial data input (Fixed at “L” in this set.) Clock signal input for serial bit transfer of serial input/output data. LRCK Sampling frequency clock signal input of serial input/output data. Bit clock (BCK) and L/R sampling clock (LRCK) signal master/slave mode select XMST signal input from system control (IC500).
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Not used. (Open) 35, 36 — Ground P65/IRQ1 Not used. (Open) BUS-ON SONY BUS ON input — Power supply pin (+5 V) CD/MD CD/MD mechanism deck setting input (“L” : CD mechanism deck) 41 – 43 PE1 – 3 Not used. (Open) —...
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Not used. (Open) — Power supply pin (+5 V) 90 – 96 PF6 – 0 Not used. (Open) UNI-SO SONY BUS serial data output UNI-SI SONY BUS serial data input 99, 100 — Ground UNI-SCK SONY BUS serial clock input P53/ADTRG Not used.
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Not used. (Open) TIR PDOWN Not used. (Open) TIR RST Not used. (Open) SYS RST Reset output for SONY BUS slave micon. BUS ON SONY BUS ON output — Power supply pin (+5 V) DSPSTP Digital signal processor master clock control output TIR PLAY Not used.
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Pin No. Pin Name Pin Description VOL LOAD Electronic volume IC data latch output VOL DATA L Electronic volume L-ch setting data output VOL DATA R Electronic volume R-ch setting data output VOL CLK Electronic volume setting clock output DSP XLAT Data latch output to digital signal processor.
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Pin No. Pin Name Pin Description CSV RST CSV control IC initial reset output — Not used. (Open) FM ON Power control output at FM reception. DOOR SW Door switch input NS MASK Mask control output of quality input at tuner reception. SEEK Seek control output at tuner reception.
CDX-C8850/C9500 4-2. BLOCK DIAGRAM — CD SECTION — DIGITAL SERVO/ OPTICAL PICK-UP RF AMP, LD-APC ERROR AMP DIGITAL SIGNAL PROCESSOR DRAM CONTROLLER KSS-521A IC501 3 PD1 59 RFDC PCMD 9 DATI DATA DATA 55 FE LRCK 10 LRCI TUNER INVERTER...
CDX-C8850/C9500 4-3. BLOCK DIAGRAM — DISPLAY SECTION — BUS INTERFACE DISPLAY CONTROL LCD DRIVER IC271 IC701 IC920 BATT D276 LCD CLK BATT BUIN LCD DATA BU IN DATA LCD CE1 UNI SCK LCD INH DATA IC921 VLCD DATA DATA LIQUID CRYSTAL...
4-5. CIRCUIT BOARDS LOCATION • Waveforms (MODE:PLAY) THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS. (In addition to this, the necessary note is printed in each block.) For schematic diagrams Approx. 200mVp-p • All capacitors are in µF unless otherwise noted. pF: µµF !¢...
CDX-C8850/C9500 4-6. SCHEMATIC DIAGRAM — CD MECHANISM SECTION (1/3) — • Refer to page 57 for IC Block Diagrams. (Page 40) Note: • Voltage and waveforms are dc with respect to ground under no-signal conditions. no mark : CD PLAY ∗...
CDX-C8850/C9500 4-7. SCHEMATIC DIAGRAM — CD MECHANISM SECTION (2/3) — • Refer to page 57 for IC Block Diagrams. (Page 39) Note: • Voltage and waveforms are dc with respect to ground under no-signal conditions. no mark : CD PLAY ∗...
CDX-C8850/C9500 4-8. SCHEMATIC DIAGRAM — CD MECHANISM SECTION (3/3) — • Refer to page 58 for IC Block Diagrams. (Page 49) Note: • Voltage and waveforms are dc with respect to ground under no-signal conditions. no mark : CD PLAY ∗...
CDX-C8850/C9500 4-11. SCHEMATIC DIAGRAM — MAIN SECTION (1/5) — • Refer to page 59 for IC Block Diagrams. Note: • Voltage is dc with respect to ground under no-signal (detuned) condition. no mark : FM ) : AM...
CDX-C8850/C9500 4-12. SCHEMATIC DIAGRAM — MAIN SECTION (2/5) — • Refer to page 59 for IC Block Diagrams. (Page 49) (Page 50) Note: • Voltage is dc with respect to ground under no-signal (detuned) condition. no mark : FM...
CDX-C8850/C9500 4-13. SCHEMATIC DIAGRAM — MAIN SECTION (3/5) — • Refer to page 60 for IC Block Diagrams. (Page 50) (Page 49) Note: • Voltage is dc with respect to ground under no-signal (detuned) condition. no mark : FM...
CDX-C8850/C9500 4-14. SCHEMATIC DIAGRAM — MAIN SECTION (4/5) — • Refer to page 60 for IC Block Diagrams. (Page 47) (Page 48) Note: • Voltage is dc with respect to ground under no-signal (detuned) condition. no mark : FM...
CDX-C8850/C9500 4-15. SCHEMATIC DIAGRAM — MAIN SECTION (5/5) — • Refer to page 59 for IC Block Diagrams. (Page 47) (Page 48) Note: • Voltage is dc with respect to ground under no-signal (detuned) condition. no mark : FM...
CDX-C8850/C9500 4-16. SCHEMATIC DIAGRAM — POWER SECTION — • Refer to page 60 for IC Block Diagrams. Note: • Voltage is dc with respect to ground under no-signal (detuned) condition. no mark : FM...
CDX-C8850/C9500 4-20. SCHEMATIC DIAGRAM — DISPLAY SECTION — Note: • Voltage is dc with respect to ground under no-signal (detuned) condition. no mark : FM...
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. mark ! or dotted line with mark. Example : • Items marked “*” are not stocked since KNOB, BALANCE (WHITE) ...
5-5. 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 * 201...
SECTION 6 DISC IN SW DISPLAY ELECTRICAL PARTS LIST NOTE: • Due to standardization, replacements in • Items marked “*” are not stocked since The components identified by mark ! or dotted line with mark. the parts list may be different from the they are seldom required for routine service.
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DISPLAY LIMIT SW LOAD SW Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark Q901 8-729-904-66 TRANSISTOR DTD113EK-T-146 R948 1-216-841-11 METAL CHIP 1/16W Q902 8-729-424-08 TRANSISTOR UN2111-TX R949 1-216-809-11 METAL CHIP 1/16W Q903 8-729-424-08 TRANSISTOR UN2111-TX R950 1-216-809-11 METAL CHIP 1/16W Q904...
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MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark A-3294-738-A MAIN BOARD, COMPLETE (C8850) C254 1-115-339-11 CERAMIC CHIP 0.1uF (INCLUDING POWER BOARD, COMPLETE) C271 1-115-339-11 CERAMIC CHIP 0.1uF A-3294-741-A MAIN BOARD, COMPLETE (C9500) C272 1-115-339-11 CERAMIC CHIP 0.1uF (INCLUDING POWER BOARD, COMPLETE) C291...