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Sony CDX-C880 Service Manual

Fm/am compact disc player
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SERVICE MANUAL

SPECIFICATIONS

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.
Other specifications
CD player section
System
Compact disc digital audio
system
Signal-to-noise ratio
100 dB
Frequency response
10 - 20,000 Hz
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
US model:
87.5 - 107.9 MHz
E model:
FM tuning interval:
50 kHz/200 kHz switchable
87.5 - 108.0 MHz
(at 50 kHz step)
87.5 - 107.9 MHz
(at 200 kHz step)
Antenna terminal
External antenna connector
Intermediate frequency 10.7 MHz
Usable sensitivity
8 dBf
Selectivity
75 dB at 400 kHz
50 dB at 200 kHz
Signal-to-noise ratio
65 dB (stereo),
68 dB (mono)
Harmonic distortion at 1 kHz
0.7% (stereo),
0.4% (mono)
Separation
35 dB at 1 kHz
Frequency response
30 - 15,000 Hz
MICROFILM
CDX-C880
Model Name Using Similar Mechanism
CD Drive Mechanism Type
Optical Pick-up Name
AM
Tuning range
US model:
530 - 1,710 kHz
E model:
AM tuning interval:
9 kHz/10 kHz switchable
531 - 1,602 kHz
(at 9 kHz step)
530 - 1,710 kHz
(at 10 kHz step)
Antenna terminal
External antenna connector
Intermediate frequency 10.71 MHz/450 kHz
30 µV
Sensitivity
Power amplifier section
Outputs
Speaker outputs
(sure seal connectors)
Speaker impedance
4 - 8 ohms
Maximum power output 45 W × 4 (at 4 ohms)
FM/AM COMPACT DISC PLAYER
– 1 –
US Model
E Model
CDX-C680/C780
MG-363S-121
KSS-521A
– Continued on next page –

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  • Page 1: Specifications

    CDX-C880 SERVICE MANUAL US Model E Model Model Name Using Similar Mechanism CDX-C680/C780 SPECIFICATIONS CD Drive Mechanism Type MG-363S-121 Optical Pick-up Name KSS-521A 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.

  • Page 2: General

    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.

  • Page 3: Table Of Contents

    TABLE OF CONTENTS 1. GENERAL 4. DIAGRAMS Location of Controls ..............4 4-1. IC Pin Descriptions ............30 Getting Started ................. 5 4-2. Circuit Boards Location ............ 38 Setting the Clock ..............5 4-3. Block Diagram –CD Section– ........... 39 CD Player ................
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  • Page 21: Cover

    SECTION 2 DISASSEMBLY Note : Follow the disassembly procedure in the numerical order given. 2-1. COVER 1 claw 4 cover 3 claws 2 claw 2-2. FRONT PANEL ASSY 3 Push the bearing (L). 2 Push the bearing (R). 4 front panel assy 1 Push the button (open).

  • Page 22: Sub Panel Assy

    2-3. SUB PANEL ASSY 7 CN804 4 claws 6 CN801 2 PTT 2.6x6 5 claw 1 PTT 2.6x6 8 sub panel assy 3 PTT 2.6x6 2-4. MECHANISM BLOCK 6 bracket (mechanism deck) 4 mechanism block 5 PTT 2.6x6 3 CN401 1 PTT 2.6x6 2 PTT 2.6x6 –...

  • Page 23: Main Board

    2-5. MAIN BOARD 3 ground point screws (PTT 2.6x6) 4 ground point screw (PTT 2.6x6) 2 PTT 2.6x10 5 MAIN board 1 PTT 2.6x10 2-6. HEAT SINK 3 connector 2 CN10 4 CN603 1 CN202 5 PTT 2.6x10 9 heat sink 6 PTT 2.6x10 7 PTT 2.6x10 8 PTT 2.6x10...

  • Page 24: Chassis (T) Sub Assy

    2-7. CHASSIS (T) SUB ASSY 1 P 2x3 2 P 2x3 3 chassis (T) sub assy 2-8. 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 –...

  • Page 25: Servo Board

    2-9. SERVO BOARD 2 PS 2x5 1 PS 2x5 3 heat sink !º SERVO board 7 CN2 4 CN4 6 PS 2x4 5 CN5 8 P 2x3 9 loading motor assy 2-10. ROLLER ASSY • When installing, take note of the positions washer arm (roller) and washers.

  • Page 26: Chassis (Op) (O/S) Assy

    2-11. 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) 2-12.

  • Page 27: Electrical Adjustments

    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 FREQUENCY SELECT switch (E model) : FM 200K TUNER SECTION FM RF signal Cautions during repair generator...
  • Page 28 FM Stereo Separation Adjustment (WIDE) FM Stereo Separation Adjustment (NARROW) Setting : Setting : SOURCE button : FM SOURCE button : FM FREQUENCY SELECT switch (E model) : FM 200K FREQUENCY SELECT switch (E model) : FM 200K FM RF signal FM RF signal generator generator...
  • Page 29 AM Auto Scan/Stop Level Adjustment Adjustment Location : tuner unit (TU10) Setting : SOURCE n MODE button : AM –set upper view– FREQUENCY SELECT switch (E model) : AM 10K 30 Ω 15 pF 65 pF AM RF signal generator AM dummy antenna(50 Ω...

  • Page 30: Diagrams

    SECTION 4 DIAGRAMS 4-1. IC PIN DESCRIPTIONS • IC5 CXP84640-011Q (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...
  • Page 31 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 32 • 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” detection output. (“H” : ON, “L” : OFF) (Not used.) CKOUT Master clock frequency division output (Not used.) VDD0...
  • Page 33 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.
  • Page 34 Pin No. Pin Name Pin Description AVSS2 — R-ch, Analog GND. 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 —...
  • Page 35 • IC501 MB90574PFV-G-132-BND (SYSTEM CONTROL) (MAIN BOARD) Pin No. Pin Name Pin Description SEKOUT SEEK OUT output AF-SEEK AF SEEK output (Not used in this set.) WIDE WIDE/NARROW select output ST-MONO Use a thing both as ST-IND display input and force MONO output. TUNMUTE Tuner mute output FM-ON...
  • Page 36 Pin No. Pin Name Pin Description — Power supply pin (+5 V) RAMBU RAM reset detection input POWSEL Power select initial setting input EQ-SEL Equalizer connection with/without detection initial input TESTIN Test mode setting detection input DOORIND Door indicator output TIRPLAY Audio line select control output at CSV.

  • Page 37: Circuit Boards Location

    4-2. CIRCUIT BOARDS LOCATION Pin No. Pin Name Pin Description 112, 113 — Not used in this set. CD serial data output CD serial clock output CD serial latch output CSV-NAR Audio composition request signal input tuner unit LEDON Front panel LED control output (TU10) SUB board —...

  • Page 38: Block Diagram -Cd Section

    CDX-C880 4-3. BLOCK DIAGRAM — CD SECTION — DIGITAL SERVO/ DRAM CONTROLLER OPTICAL PICK-UP RF AMP, LD-APC ERROR AMP DIGITAL SIGNAL PROCESSOR D/A CONVERTER KSS-521A LINE AMP IC501 IC401 IC403 MAIN 3 PD1 59 RFDC PCMD 9 DATI DATA 2 DATA...

  • Page 39: Block Diagram -Main Section

    CDX-C880 4-4. BLOCK DIAGRAM — MAIN SECTION — LINE DRIVER IC207 CN201 TUNER UNIT L-CH FNTO1 ELECTRONIC VOLUME CN201 BUS AUDIO TU10 IC202 IC11 (ANTENNA) FRONT R-CH R-CH Q207 R-CH AM-ANT L-OUT LINE SW201 FM-ANT R-CH OUT/IN R-OUT R-CH (LINE OUT/IN)

  • Page 40: Block Diagram -Display Section

    CDX-C880 4-5. BLOCK DIAGRAM — DISPLAY SECTION — SYSTEM CONTROL LCD DRIVE IC501 (2/2) IC900 RESET BU5V DATA IC601 LCD900 SW801 RESET VLC5 RESET D501 Q501 COLOR SELECT VLC4 GREEN BUS INTERFACE BUS SO Q900, 902 IC505 VLC3 COLOR RESET...
  • Page 41 • Waveforms (MODE:PLAY) Approx. 200mVp-p !¢ (TE) Approx. 620mVp-p !§ (FE) 1.2Vp-p !¶ (RFO) 2.6Vp-p 7.6µsec &ª (MDP) IC501 5.8Vp-p 22.7µsec *¶ (LRCK) IC501 5.7Vp-p 474nsec (¡ (BCK) IC501 3.2Vp-p Note: • All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics 16.89MHz and tantalums.

  • Page 42: Ic Block Diagrams

    • IC Block Diagrams IC1 CXA1791N-T4 IC601 BA6195FP-YT2 25 24 23 22 21 16 15 VREF LD AMP PD AMP 1.25V THERMAL SHUT DOWN DRIVER 20 VCC – – MUTE LEVEL SHIFT 19 APC ON – – – 18 RFI –...
  • Page 43 IC4 MB814400C-70PFTN IC551 LC89170M-TLM EXCK CPU INTERFACE WRITE DATA INPUT DATA OUTPUT SBSO DQSY CLOCK BUFFER BUFFER 32 WORD X 8 BIT GENERATOR DUAL PORT RAM CHECKER SRDT SCOR CLOCK WFCK SCLK GENERATOR 4M BIT SENSE AMP COLUMN MEMORY DECODER I/O GATE CELL TIMING...
  • Page 44 IC10 BU2624FV-E2 IC205, 207, 208 TDA8574(T) XOUT VCCL VCCL BUFFER PHASE CL– SVRL LIFT REFERENCE BUFFER DIVIDER MAIN FMIN PRESCALER COUNT REFERENCE VCCL LGND SIGNAL SHIFT REGISTER LATCH AMIN OUTL INML IF COUNT VCCR INMR OUTR SIGNAL RGND 20BIT COUNT IFIN REFERENCE VCCR...
  • Page 45 IC301 NJM2150AV-TE2 12 11 – – – – BBE/BYPASS – – CONTROL CIRCUIT – – IC201 BU4052BCFV-E2 IC204 CXA1846N-T4 20 19 13 12 11 – 8dB STEP 1dB STEP VOLUME VOLUME SELECT A LATCH BUFFER LATCH CONTROL SELECT B SHIFT REGISTER IC401 PCM1716E-BT2 8dB STEP...
  • Page 46 IC602 BA3918-V3 REGULATOR OVER VOLTAGE PROTECT – 2 3 4 IC901 RSC-164 64–57 ADC MIX DACOUT ANALOG CONTROL EXTERNAL MEMORY INTERNAL ROM INTERFACE 32K x 8 32K x 8 high REGISTER SPACE PULSE WIDTH 384 bytes MODULATOR STACK SPACE TIMER 8 bytes XI 2 TIMER...

  • Page 47: Exploded Views

    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) ...

  • Page 48: Front Panel Section

    5-2. FRONT PANEL SECTION not supplied (KEY board) EL900 LCD900 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 3-022-329-01 BUTTON (SOURCE) 3-022-332-01 BUTTON (10 KEY) 3-022-322-01 KNOB * 63 3-022-327-01 PLATE (LCD), GROUND 3-022-323-01 LEVER (SHUTTLE) 1-694-414-11 CONDUCTOR BOARD, CONNECTION 3-022-324-01 PLATE (SHUTTLE), LIGHT GUIDE * 65...

  • Page 49: Cd Mechanism Section (1)

    5-3. CD MECHANISM SECTION (1) (MG-363S-121) M903 not supplied Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark * 101 1-659-836-11 DISC IN SW BOARD 3-931-902-03 ARM (ROLLER) * 102 A-3291-816-B CHASSIS (T) SUB ASSY 3-936-756-01 ROLLER (D) 3-931-909-01 SPRING (LR), TENSION 3-321-393-01 WASHER, STOPPER X-3371-501-1 LEVER (L) ASSY...

  • Page 50: Cd Mechanism Section (2)

    5-4. CD MECHANISM SECTION (2) (MG-363S-121) Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 3-931-893-01 ARM, CHUCKING 3-931-914-01 SPRING (ANGLE), TENSION 3-931-897-01 DAMPER (T) * 159 A-3291-677-G CHASSIS (M) ASSY 3-931-879-02 LEVER (D) 3-931-883-01 SPRING (TR), TENSION * 154 3-913-404-11 RETAINER (DISC) 3-931-881-01 LEVER (LOCK)

  • Page 51: Cd Mechanism Section (3)

    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...

  • Page 52: Electrical Parts List

    SECTION 6 DISC IN SW 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.
  • Page 53 INVERTER Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark A-3313-920-A INVERTER BOARD, COMPLETE KEY BOARD ************************* ********** < CAPACITOR > 1-694-414-11 CONDUCTOR BOARD, CONNECTION 3-017-983-01 CUSHION (10) C551 1-126-157-11 ELECT 10uF 3-022-326-01 PLATE (LCD), LIGHT GUIDE C552 1-164-004-11 CERAMIC CHIP 0.1uF...
  • Page 54 LIMIT SW LOAD SW MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark LSW905 1-762-620-11 SWITCH, KEY BOARD (WITH LED) (SHIFT) R946 1-216-089-00 RES,CHIP 1/10W LSW906 1-762-620-11 SWITCH, KEY BOARD (WITH LED) (1) R947 1-216-089-00 RES,CHIP 1/10W LSW907 1-762-620-11 SWITCH, KEY BOARD (WITH LED) (2) R948...
  • Page 55 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 1-104-665-11 ELECT 100uF C216 1-163-809-11 CERAMIC CHIP 0.047uF 1-163-038-00 CERAMIC CHIP 0.1uF C217 1-164-489-11 CERAMIC CHIP 0.22uF 1-104-665-11 ELECT 100uF C218 1-163-017-00 CERAMIC CHIP 0.0047uF 5% 1-163-038-00 CERAMIC CHIP 0.1uF C219 1-163-017-00 CERAMIC CHIP...
  • Page 56 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C269 1-109-982-11 CERAMIC CHIP C327 1-117-720-11 CERAMIC CHIP 4.7uF C270 1-109-982-11 CERAMIC CHIP C401 1-115-651-11 ELECT 100uF C271 1-107-682-11 CERAMIC CHIP C402 1-124-234-00 ELECT 22uF C272 1-107-682-11 CERAMIC CHIP C403 1-163-235-11 CERAMIC CHIP 22PF...
  • Page 57 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C612 1-164-336-11 CERAMIC CHIP 0.33uF D402 8-719-422-97 DIODE MA8091-M C617 1-163-038-00 CERAMIC CHIP 0.1uF D501 8-719-400-20 DIODE MA152WA C618 1-124-234-00 ELECT 22uF D505 8-719-404-49 DIODE MA111 C619 1-163-038-00 CERAMIC CHIP 0.1uF D506...
  • Page 58 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark FB403 1-500-445-21 FERRITE, EMI (SMD) 8-729-921-25 TRANSISTOR FMC2 FB404 1-500-445-21 FERRITE, EMI (SMD) 8-729-021-94 FET 2SK1657-T1B FB405 1-500-445-21 FERRITE, EMI (SMD) Q102 8-729-028-66 TRANSISTOR DTC115EKA-T146 Q103 8-729-900-53 TRANSISTOR DTC114EK <...
  • Page 59 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 1-216-061-00 METAL CHIP 3.3K 1/10W R234 1-216-089-00 RES,CHIP 1/10W 1-216-097-00 RES,CHIP 100K 1/10W R235 1-216-089-00 RES,CHIP 1/10W 1-216-081-00 METAL CHIP 1/10W R236 1-216-089-00 RES,CHIP 1/10W 1-216-081-00 METAL CHIP 1/10W R237 1-216-049-11 RES,CHIP...
  • Page 60 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R291 1-216-083-00 METAL CHIP 1/10W R518 1-216-097-00 RES,CHIP 100K 1/10W R292 1-216-083-00 METAL CHIP 1/10W R519 1-216-097-00 RES,CHIP 100K 1/10W R293 1-216-083-00 METAL CHIP 1/10W R520 1-216-097-00 RES,CHIP 100K 1/10W R294...
  • Page 61 MAIN RELAY SERVO Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R815 1-216-049-11 RES,CHIP 1/10W D823 8-719-069-57 DIODE UDZS-TE17-6.8B R816 1-216-025-00 RES,CHIP 1/10W LED802 8-719-033-14 LED CL-170PG-CD-T (CD WINDOW) R817 1-216-049-11 RES,CHIP 1/10W LED803 8-719-033-14 LED CL-170PG-CD-T (CD WINDOW) R818 1-216-049-11 RES,CHIP 1/10W...
  • Page 62 SERVO Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C502 1-135-145-11 TANTALUM CHIP 0.47uF R106 1-216-001-00 METAL CHIP 1/10W C503 1-163-021-11 CERAMIC CHIP 0.01uF R108 1-216-051-00 METAL CHIP 1.2K 1/10W C504 1-163-251-11 CERAMIC CHIP 100PF R109 1-216-057-00 METAL CHIP 2.2K 1/10W...
  • Page 63 SERVO Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R505 1-216-061-00 METAL CHIP 3.3K 1/10W MISCELLANEOUS R506 1-216-073-00 METAL CHIP 1/10W *************** R507 1-216-125-00 METAL CHIP 1.5M 1/10W R508 1-216-105-00 RES,CHIP 220K 1/10W 1-783-495-11 CORD (WITH CONNECTOR) (INVERTER) R509 1-216-113-00 METAL CHIP 470K...
  • Page 64 Ref. No. Part No. Description Remark PARTS FOR INSTALLATION AND CONNECTIONS *************************************** 3-009-613-21 FRAME 3-924-961-01 SUPPORT (ND), FITTING (US) X-3368-725-1 SCREW ASSY, FITTING (US) 7-682-560-04 SCREW +P 4X6 (US) X-3366-405-1 SCREW ASSY (EXP), FITTING (E) 3-386-828-01 SCREW, FITTING (E) 3-349-410-01 BUSHING (E) 3-022-310-01 COLLAR 3-027-138-01 SPRING, FITTING 3-934-325-01 SCREW, +K (5X8) TAPPING...
  • Page 65 CDX-C880 Sony Corporation 98F0433-1 9-925-983-11 Personal & Mobile Communication Company Printed in Japan C1998. 6 – 98 – Published by Quality Assurance Dept.

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