Sony CDX-L490B Service Manual
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Sony CDX-L490B Service Manual

Sony CDX-L490B Service Manual

Fm/am compact disc player
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3 7 63 1515 0
SERVICE MANUAL
Ver 1.0 2002. 12
• The tuner and CD sections have no adjustments.
TE
CD player section
L 13942296513
Signal-to-noise ratio
90 dB
Frequency response
10 – 20,000 Hz
Wow and flutter
Below measurable limit
Tuner section
FM
Tuning range
FM tuning interval:
50 kHz/200 kHz switchable
87.5 – 108 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
11 dBf
Selectivity
75 dB at 400 kHz
Signal-to-noise ratio
65 dB (stereo),
68 dB (mono)
Harmonic distortion at 1 kHz
0.7% (stereo),
0.5% (mono)
Separation
33 dB at 1 kHz
Frequency response
30 – 15,000 Hz
AM
Tuning range
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 10.7 MHz/450 kHz
Sensitivity
AM: 30 µV
www
.
Sony Corporation
9-874-266-01
2002L0400-1
e Vehicle Company
© 2002. 12
Published by Sony Engineering Corporation
http://www.xiaoyu163.com
CDX-L490B/L490X
x
ao
y
i
http://www.xiaoyu163.com
8
Photo: CDX-L490X
Model Name Using Similar Mechanism
CD Drive Mechanism Type
Optical Pick-up Name
SPECIFICATIONS
Q Q
Power amplifier section
3
6 7
1 3
Outputs
Speaker impedance
Maximum power output 45 W × 4 (at 4 ohms)
General
Outputs
Inputs
Tone controls
Power requirements
Dimensions
Mounting dimensions
Mass
Supplied accessories
Note
This unit cannot be connected to a digital preamplifier or an equalizer.
Design and specifications are subject to change without
notice.
FM/AM COMPACT DISC PLAYER
u163
.
2 9
9 4
2 8
1 5
0 5
8
2 9
9 4
Speaker outputs
(sure seal connectors)
4 – 8 ohms
Audio outputs (rear)
Power antenna relay control terminal
Power amplifier control terminal
Antenna input terminal
Low: ±10 dB at 60 Hz (XPLOD)
Mid: ±10 dB at 1 kHz (XPLOD)
High: ±10 dB at 10 kHz (XPLOD)
12 V DC car battery
(negative earth)
Approx. 178 × 50 × 176 mm
(w/h/d)
Approx. 182 × 53 × 161 mm
(w/h/d)
Approx. 1.2 kg
Parts for installation and connections
Front panel case (1)
m
co
9 9
E Model
NEW
MG-393XC-121//K
KSS-721A
2 8
9 9
1

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Summary of Contents for Sony CDX-L490B

  • Page 1 530 – 1,710 kHz (at 10 kHz step) Antenna terminal External antenna connector Intermediate frequency 10.7 MHz/450 kHz Sensitivity AM: 30 µV FM/AM COMPACT DISC PLAYER u163 Sony Corporation 9-874-266-01 2002L0400-1 e Vehicle Company © 2002. 12 Published by Sony Engineering Corporation http://www.xiaoyu163.com...

  • Page 2: Service Notes

    COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH MARK 0 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

    CDX-L490B/L490X 3 7 63 1515 0 TABLE OF CONTENTS 1. GENERAL 3. DIAGRAMS Location of controls ..............4 3-1. IC Pin Description ............. 12 Connections ................4 3-2. Circuit Boards Location ............ 14 3-3. Block Diagram –CD Section– ........... 15 2.

  • Page 4: General

    CDX-L490B/L490X SECTION 1 GENERAL 3 7 63 1515 0 This section is extracted from instruction manual. L 13942296513 Connections u163 http://www.xiaoyu163.com...
  • Page 5 CDX-L490B/L490X 3 7 63 1515 0 L 13942296513 u163 http://www.xiaoyu163.com...

  • Page 6: Disassembly

    CDX-L490B/L490X SECTION 2 DISASSEMBLY 3 7 63 1515 0 Note : This set can be disassemble according to the following sequence. 2-5. CHASSIS (T) SUB ASSY 2-1. SUB PANEL (1) ASSY (Page 8) (Page 6) 2-6. LEVER SECTION 2-7.

  • Page 7: Cd Mechanism Block

    CDX-L490B/L490X 3 7 63 1515 0 2-2. CD MECHANISM BLOCK 7 bracket (CD) 5 CD mechanism block 6 PTT 2.6x6 2 PTT 2.6x6 1 PTT 2.6x6 L 13942296513 4 CNP701 2-3. MAIN BOARD 3 screw (+BTT) 5 MAIN board 4 screws (+BTT) 2 PTT 2.6x8...

  • Page 8: Heat Sink

    CDX-L490B/L490X 3 7 63 1515 0 2-4. HEAT SINK 6 heat sink 5 PTT 2.6x8 4 PTT 2.6x8 3 PTT 2.6x12 2 PTT 2.6x8 1 PTT 2.6x8 L 13942296513 2-5. CHASSIS (T) SUB ASSY 2 P 2x3 3 P 2x3...

  • Page 9: Lever Section, In Self Sw Board

    CDX-L490B/L490X 3 7 63 1515 0 2-6. LEVER SECTION, IN SELF SW BOARD 5 guide (disc) 6 lever (R) 3 tension spring (LR) 7 lever (L) 1 special screw 2 IN SELF SW board L 13942296513 4 claws 2-7. SERVO BOARD...

  • Page 10: Shaft Roller Assy, Load Sw Board

    CDX-L490B/L490X 3 7 63 1515 0 2-8. SHAFT ROLLER ASSY, LOAD SW BOARD • When installing, take note of the positions arm (roller) and washers. (Fig. 1) 3 retaining ring (RA) shaft retainer (roller) washer 4 shaft retainer (roller)

  • Page 11: Optical Pick-Up Block

    CDX-L490B/L490X 3 7 63 1515 0 2-10. OPTICAL PICK-UP BLOCK 4 screw 1 P 2x3 5 plate spring (feed) 2 sled motor assy 3 optical pick-up block 6 shaft (feed) assy L 13942296513 u163 http://www.xiaoyu163.com...

  • Page 12: Diagrams

    Serial data signal output to LCD driver IC (IC901) LCD CLK Serial clock signal output to LCD driver IC (IC901) BUS SI SONY bus data signal input BUS SO SONY bus data signal output BUS CLK SONY bus clock signal input...
  • Page 13 CD DSP power supply control signal output “H”: CD power on ACC IN Accessory power supply detection signal input “L”: accessory on BUS ON SONY bus on signal output Not used in this set. (open) BUS RST SONY bus reset signal output Not used in this set. (open) PW ON...

  • Page 14: Circuit Boards Location

    CDX-L490B/L490X 3 7 63 1515 0 3-2. CIRCUIT BOARDS LOCATION SERVO board IN SELF SW board SPEAKER board LOAD SW board tuner unit (TU601) DISPLAY board MAIN board SL SW board L 13942296513 u163 http://www.xiaoyu163.com...

  • Page 15: Block Diagram -Cd Section

    CDX-L490B/L490X 3 7 6 3 1 5 1 5 0 3-3. BLOCK DIAGRAM — CD SECTION — RF AMP,DIGITAL SERVO DIGITAL SIGNAL PROCESSOR OPTICAL PICK-UP KSS-721A TUNER SECTION LOUT SYSTEM CONTROL ROUT IC801(1/3) CONV R-CH (Page 16) DEMOD PACK...

  • Page 16: Block Diagram -Tuner Section

    CDX-L490B/L490X 3 7 6 3 1 5 1 5 0 3-4. BLOCK DIAGRAM — TUNER SECTION — PJ401 REAR AUDIO OUT R-CH POWER AMP ELECTRONIC VOLUME IC101 (Page 15) IC401 CNP901 OUTF1 FL– 9 C2 TUNER UNIT TU601 SECTION...

  • Page 17: Block Diagram -Display Section

    CDX-L490B/L490X 3 7 6 3 1 5 1 5 0 • Waveforms 3-5. BLOCK DIAGRAM — DISPLAY SECTION — — Servo Board — Main Board (MODE: CD PLAY) — — LCD DO TUNER LCD CLK SECTION LCD CE 2Vp-p...

  • Page 18: Printed Wiring Boards -Cd Mechanism Section

    CDX-L490B/L490X 3 7 6 3 1 5 1 5 0 3-6. PRINTED WIRING BOARDS — CD MECHANISM SECTION — • Refer to page 14 for Circuit Boards Location. THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
  • Page 19 CDX-L490B/L490X 3 7 6 3 1 5 1 5 0 TP77 TP78 TP62 TP63 TP82 TP84 TP48 TP80 TP66 TP83 TP81 TP60 TP11 TP50 TP12 TP47 TP64 TP10 TP51 TP59 TP89 TP52 TP70 TP71 TP56 (Page 21) TP72 TP58...

  • Page 20: Schematic Diagram -Cd Mechanism Section

    CDX-L490B/L490X 3 7 6 3 1 5 1 5 0 • Refer to page 17 for Waveforms. 3-7. SCHEMATIC DIAGRAM — CD MECHANISM SECTION — • Refer to page 26 for IC Block Diagrams. TP77 TP78 TP89 TP79 TP80...

  • Page 21: Printed Wiring Boards -Main Section

    CDX-L490B/L490X 3-8. PRINTED WIRING BOARDS — MAIN SECTION — • Refer to page 14 for Circuit Boards Location. 3 7 6 3 1 5 1 5 0 CNP901 F901 IC101 Q902 Q904 C605 Q911 1 3 9 4 2 2 9 6 5 1 3...

  • Page 22: Schematic Diagram -Main Section (1/2)

    CDX-L490B/L490X 3 7 6 3 1 5 1 5 0 3-9. SCHEMATIC DIAGRAM — MAIN SECTION (1/2) — • Refer to page 17 for Waveforms. Q907 Q910 TH901 Q917 Q916 Q919 Q918 R914 R835 R930 R916 R933 Q906 (Page 23)

  • Page 23: Schematic Diagram -Main Section (2/2)

    CDX-L490B/L490X • Refer to page 17 for Waveform. 3 7 6 3 1 5 1 5 0 3-10. SCHEMATIC DIAGRAM — MAIN SECTION (2/2) — • Refer to page 26 for IC Block Diagrams. CNP901 C901 D901 IC101 C401...

  • Page 24: Printed Wiring Board -Display Section

    CDX-L490B/L490X 3 7 6 3 1 5 1 5 0 3-11. PRINTED WIRING BOARD — DISPLAY SECTION — • Refer to page 14 for Circuit Boards Location. LED906 LED908 S901 S902 LSW905 LED911 LED910 LED905 LED901 LSW914 S903 LED904...

  • Page 25: Schematic Diagram -Display Section

    CDX-L490B/L490X 3 7 6 3 1 5 1 5 0 3-12. SCHEMATIC DIAGRAM — DISPLAY SECTION — R972 R974 R976 R986 R980 R982 R978 R966 R967 LSW910(1/2) LSW918(1/2) LSW917(1/2) LSW914(2/2) LSW906(2/2) CN901 IC951 R952 R951 LED904 LED910 LSW909(1/2) LSW919(1/2)

  • Page 26: Ic Block Diagrams

    CDX-L490B/L490X 3 7 6 3 1 5 1 5 0 3-13. IC BLOCK DIAGRAMS IC1 µPD63711GC-8EU (SERVO Board) IC2 BA5810FP-E2 (SERVO Board) BIAS 71 70 LOADING PRE OPIN4+ FWD REV – OPIN4– MICROCOMPUTER INTERFACE AGCI 50 C2D3 LDCONT COMPARATOR...
  • Page 27 CDX-L490B/L490X 3 7 63 1515 0 IC401 BD3803F (MAIN Board) DGND MUTE OUTF1 OUTR1 OUTF2 OUTR2 DS32 DS22 DS12 FADER FADER FADER FADER (0~-58, (0~-58, (0~-58, (0~-58, C BUS -∞dB) -∞dB) -∞dB) -∞dB) LOGIC EFFECT(OFF,6dB EFFECT(OFF,6dB 10dB,14dB) 10dB,14dB) TONE...

  • Page 28: Exploded Views

    CDX-L490B/L490X SECTION 4 EXPLODED VIEWS 3 7 63 1515 0 NOTE: • The mechanical parts with no reference • Color Indication of Appearance Parts The components identified by mark 0 or dotted line with mark number in the exploded views are not supplied.

  • Page 29: Front Panel Section

    CDX-L490B/L490X 3 7 63 1515 0 4-2. FRONT PANEL SECTION LCD901 not supplied not supplied not supplied not supplied (DISPLAY board) not supplied L 13942296513 not supplied not supplied Ref. No. Part No. Description Remark Ref. No. Part No.

  • Page 30: Cd Mechanism Section (1)

    CDX-L490B/L490X 3 7 63 1515 0 4-3. CD MECHANISM SECTION (1) (MG-393XC-121//K) L 13942296513 M903 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 1-683-283-11 IN SELF SW BOARD 3-221-779-02 BRACKET (MOTOR) 3-040-039-03 CHASSIS (T) 3-040-034-01 SPRING (RA), TENSION...

  • Page 31: Cd Mechanism Section (2)

    CDX-L490B/L490X 3 7 63 1515 0 4-4. CD MECHANISM SECTION (2) (MG-393XC-121//K) not supplied L 13942296513 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 3-040-025-02 ARM, CHUCKING 3-040-033-01 SPRING (KF1), TENSION 3-040-031-01 DAMPER (T) A-3307-422-A CHASSIS (M) COMPLETE ASSY...

  • Page 32: Cd Mechanism Section (3)

    CDX-L490B/L490X 3 7 63 1515 0 4-5. CD MECHANISM SECTION (3) (MG-393XC-121//K) M901 M902 L 13942296513 The components identified by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number specified. Ref. No.

  • Page 33: Electrical Parts List

    CDX-L490B/L490X SECTION 5 DISPLAY ELECTRICAL PARTS LIST 3 7 63 1515 0 NOTE: • Due to standardization, replacements in • Items marked “*” are not stocked since The components identified by mark 0 or dotted line with mark the parts list may be different from the they are seldom required for routine service.
  • Page 34 CDX-L490B/L490X DISPLAY IN SELF SW LOAD SW MAIN 3 7 63 1515 0 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R969 1-216-815-11 METAL CHIP 1/10W C205 1-162-964-11 CERAMIC CHIP 0.001uF R972 1-216-809-11 METAL CHIP...
  • Page 35 CDX-L490B/L490X MAIN 3 7 63 1515 0 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C809 1-164-156-11 CERAMIC CHIP 0.1uF D917 8-719-200-82 DIODE 11ES2 C841 1-162-964-11 CERAMIC CHIP 0.001uF D918 8-719-200-82 DIODE 11ES2 C842 1-162-964-11 CERAMIC CHIP 0.001uF...
  • Page 36 CDX-L490B/L490X MAIN 3 7 63 1515 0 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark Q401 8-729-055-92 TRANSISTOR SRA2203SF R606 1-216-841-11 METAL CHIP 1/10W Q402 8-729-055-96 TRANSISTOR SRC1203SF R607 1-216-827-11 METAL CHIP 3.3K 1/10W Q603...
  • Page 37 CDX-L490B/L490X SERVO MAIN 3 7 63 1515 0 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R860 1-216-813-11 METAL CHIP 1/10W A-3283-233-A SERVO BOARD, COMPLETE R901 1-249-425-11 CARBON 4.7K 1/4W ********************** R906 1-249-425-11 CARBON 4.7K...
  • Page 38 CDX-L490B/L490X SERVO SL SW SPEAKER 3 7 63 1515 0 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < RESISTOR > PARTS FOR INSTALLATION AND CONNECTIONS *************************************** 1-216-797-11 METAL CHIP 1/10W 1-218-344-11 METAL CHIP 7.5K...
  • Page 39 CDX-L490B/L490X 3 7 63 1515 0 MEMO L 13942296513 u163 http://www.xiaoyu163.com...

  • Page 40: Revision History

    CDX-L490B/L490X 3 7 63 1515 0 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.

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