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Sony CDX-T70MX Service Manual
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Sony CDX-T70MX Service Manual

Sony CDX-T70MX Service Manual

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Download this manual See also: Operating Instructions
SERVICE MANUAL
Ver 1.1 2004.03
Sony Corporation
9-873-615-02
2004C05-1
e Vehicle Company
© 2004.03
Published by Sony Engineering Corporation
CDX-T70MX
SPECIFICATIONS
System
Compact disc digital audio system
Laser diode properties Material: GaAlAs
Wavelength: 780 nm
Emission Duration: Continuous
Laser out-put Power: Less than
44.6 µW*
* This output is the value measured at a distance of 200 mm
from the objective lens surface on the Optical Pick-up Block.
Frequency response
5 – 20,000 Hz
Wow and flutter
Below the measurable limit
Signal-to-noise ratio
102 dB
Outputs
BUS control output (8 pins)
Analog audio output (RCA pin)
Current drain
800 mA (during CD playback)
800 mA (during loading or ejecting a
disc)
Operating temperature –10°C to +55°C (14°F to 131°F)
Approx. 234.4 × 60 × 159.5 mm
Dimensions
/4 × 2
/8 × 6
(9
1
3
(w/h/d) not incl. projecting parts and
controls
Mass
Approx. 1.5 kg (3 lb. 5 oz.)
Power requirement
12 V DC car battery
(negative ground)
Supplied accessories
Disc magazine (1)
Parts for installation and connections
(1 set)
Design and specifications are subject to change without notice.
Model Name Using Similar Mechanism
CD Drive Mechanism Type
Optical Pick-up Name
3
/8 in.)
COMPACT DISC CHANGER
US Model
AEP Model
E Model
CDX-T68X
MG-276A-159
KSS-720A

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  • Page 1 (negative ground) Supplied accessories Disc magazine (1) Parts for installation and connections (1 set) Design and specifications are subject to change without notice. COMPACT DISC CHANGER Sony Corporation 9-873-615-02 2004C05-1 e Vehicle Company © 2004.03 Published by Sony Engineering Corporation...

  • Page 2: Servicing Notes

    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 PUB- LISHED BY SONY.
  • Page 3 CDX-T70MX Notes on CD-R/CD-RW discs MP3 (MPEG 1 Audio Layer-3) is a standard technology and format for compressing a sound sequence. The file is compressed to about 1/10 of its • You can play CD-Rs/CD-RWs (recordable CDs/rewritable CDs) on original size. Sounds outside the range of human hearing are compressed while the sounds we can hear are not compressed.
  • Page 4 CDX-T70MX Can the unit play a data CD with Q14 Is a file name/a folder name of FAQ- about MP3 Audio File folder levels? MP3 different from the name when creating a data CD (the The unit can play a data CD with folder What is MP3? levels.

  • Page 5: Table Of Contents

    CDX-T70MX DISC MAGAZINE GETTING OUT PROCEDURE TABLE OF CONTENTS ON THE POWER SUPPLY IS OFF SERVICING NOTES ............2 Remove the CASE (LOWER. S) beforehand GENERAL 1) Press the lever (MZ LOCK) in the direction of arrow A. Installation ............... 6 2) Removal the magazine assy.

  • Page 6: General

    CDX-T70MX SECTION 1 This section is extracted from GENERAL instruction manual. Installation Installation Precautions Prcautions Choisir l’emplacement de montage en tenant compte des Choose the mounting location carefully, observing the following: — The unit is not subject to temperatures exceeding 55°C (131°F) observations suivantes: —...

  • Page 7: Connections

    Connections/Connexions Connection diagram/Schéma de connexion For details, refer to the Installation/Connections manual of the car audio. Pour plus de détails, consulter le manuel d’installation/connexions de Sony BUS compatible car audio l’autoradio. Autoradio compatible BUS Sony BUS AUDIO IN BUS CONTROL IN Note For connecting two or more changers, the XA-C30 source selector (optional) is necessary.

  • Page 8: Disassembly Flow

    CDX-T70MX SECTION 2 DISASSEMBLY • This set can be disassembled in the order shown below. 2-1. DISASSEMBLY FLOW Note 1: The process described in can be performed in any order. Note 2: Without completing the process described in , the next process can not be performed.

  • Page 9: Front Panel (S) Assy, Case (Upper S)

    CDX-T70MX Note: Follow the disassembly procedure in the numerical order given. 2-2. FRONT PANEL (S) ASSY, CASE (UPPER S) 4 screw (PTT2.6 × 6) 5 case (upper S) 6 lever (FLT. 838) 1 screw (PTT2.6 × 6) 4 screw (PTT2.6 × 6) 3 front panel (S) assy 6 lever (FLT.

  • Page 10: Jack Board

    CDX-T70MX 2-4. JACK BOARD 2 screw (FP) 1 Remove ten solders of the cord (with connector). 3 jack board 4 ground point screw (PTT2.6 × 6) 5 cord (with connector) (BUS/RCA) 2-5. BELT (TS) 3 two screw (BVTT2 × 4)

  • Page 11: Main Board

    CDX-T70MX 2-6. MAIN BOARD 3 three screws (FP) 2 Remove three solders of the slide variable resistor (RV301). 4 main board 1 main flexible board 2 Remove two solders (CN101) of the elevator motor lead wires (M104). 2-7. ESCUTCHEON (S), SLIDE VARIABLE RESISTOR (ELEVATOR HEIGHT SENSOR) (RV301)

  • Page 12: Md Motor Assy (Elevator) (M104)

    CDX-T70MX 2-8. MD MOTOR ASSY (ELEVATOR) (M104) 1 screw (PTT2 × 3) 2 bracket (MDM) 3 MD motor assy (elevator) (M104) 2-9. LE MOTOR ASSY (CHUCKING) (M103) 3 screw (P1.7 × 2.2) 7 bracket (LEM) 2 tension spring (rack) 6 LE motor assy...

  • Page 13: Rf Board

    CDX-T70MX 2-10. RF BOARD 3 two screws (PS2 × 4) 4 heat sink 1 main flexible board 5 screw (CN101) (PS2 × 4) 2 Remove two solders of the sled motor lead wires 6 RF board (M101). 1 OP flexible board...

  • Page 14: Optical Pick-Up (Kss-720A)

    CDX-T70MX 2-12. OPTICAL PICK-UP (KSS-720A) 6 gear (SL2) 2 two screws 8 screw (P2 × 3) (P2 × 3) 5 washer 3 spring (sled front point) (DIA. 1.2) 9 detent spring (sled) 7 bearing (sled) assy 0 shaft (sled feed) assy...

  • Page 15: Lever (Chk.l) Assy, Lever (Chk.r) Assy

    CDX-T70MX 2-14. LEVER (CHK.L) ASSY, LEVER (CHK.R) ASSY 3 Move the lever (CHK.L) assy fully in the direction of arrow A . 4 lever (CHK.L) assy 1 screw (P1.7 × 2.2) leaf spring (D retainer R) 2 joint (CHK) 3 Move the lever (CHK.R) assy fully in the direction of arrow A .

  • Page 16: Mechanical Adjustment

    CDX-T70MX SECTION 3 MECHANICAL ADJUSTMENT ELEVATOR HEIGHT (ADDRESS) ADJUSTMENT Adjustment Method: Note: This adjustments is necessary when the system controller (IC301), variable resistor (RV302), lever (CHK.L) assy, lever (CHK.R) assy, 1. Connect this set to the master unit (e.g. MDX-C7970/C7970R), or chassis (EV) assy was replaced for any repair.

  • Page 17: Electrical Check

    3. Be sure to use the disc “YEDS-18” parts code: 3-702-101-01, but only – RF Board (Component Side) – – RF Board (Component Side) – when indicated. 4. Use a master unit that supports SONY bus system. oscilloscope oscilloscope (AC range)

  • Page 18: Diagrams

    CDX-T70MX SECTION 5 DIAGRAMS 5-1. BLOCK DIAGRAM – SERVO Section – DIGITAL SIGNAL PROCESSOR, FILTER DIGITAL SERVO PROCESSOR, DIGITAL DOUT D-RAM CONTROLLER 15 85 IC401 66 69 68 67 RF AMP, FOCUS/TRACKING ERROR AMP IC101 PCMD 15 88 RFAC EQ IN...

  • Page 19: Block Diagram - Main Section (1/2)

    CDX-T70MX 5-2. BLOCK DIAGRAM – MAIN Section (1/2) – SIGNAL PATH : CD PLAY DATA SERIAL VOUTL INPUT LRCK INTERFACE 8 TIME OVER CN902 (1/2) SAMPLING ENHANCED OUTPUT AMP LOW-PASS DIGITAL FILTER MULTI-LEVEL VCOM FILTER WITH DELATA-SIGMA CONVERTER LOW-PASS IC502...

  • Page 20: Block Diagram - Main Section (2/2)

    CDON 29 RESET SIGNAL GENERATOR (Page 19) CN902 (2/2) IC204 PS901 +3.3V BUS INTERFACE B. UP +3.3V REGULATOR B. UP (FOR SONY BUS) Q201, 205 IC201 D. O B. DATA DATA D. I CLK. O B. CLK EXTAL SCLK X301 12.288MHz...

  • Page 21: Note For Printed Wiring Boards And Schematic Diagrams

    CDX-T70MX 5-4. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS Note on Printed Wiring Board: Note on Schematic Diagram: • X : parts extracted from the component side. • All capacitors are in µF unless otherwise noted. pF: µµF • Y : parts extracted from the conductor side.

  • Page 22: Printed Wiring Boards - Rf Board

    CDX-T70MX 5-5. PRINTED WIRING BOARDS – RF Board – RF BOARD (COMPONENT SIDE) RF BOARD (CONDUCTOR SIDE) M101 (SLED) (CHASSIS) OP FLEXIBLE BOARD OPTICAL PICK-UP BLOCK KSS-720A C119 R106 C114 CN102 MAIN (TE) BOARD CN202 (Page 24) MAIN FLEXIBLE BOARD...

  • Page 23: Schematic Diagram - Rf Board

    CDX-T70MX 5-6. SCHEMATIC DIAGRAM – RF Board – • • See page 29 for Waveforms. See page 32 for IC Block Diagrams. Q101 C110 C111 R119 2SA1037AK-T146-R AUTOMATIC 6.3V POWER CONTROL R127 RF AMP, FOCUS/TRACKING C107 ERROR AMP R118 C116...

  • Page 24: Printed Wiring Boards - Main Board (Component Side)

    CDX-T70MX 5-7. PRINTED WIRING BOARDS – MAIN Board (Component Side) – • Semiconductor Location Ref. No. Location MAIN BOARD (COMPONENT SIDE) D201 D202 JACK BOARD D204 CN901 D207 (Page 30) D210 D301 D501 JACK FLEXIBLE D502 BOARD IC201 SW302 IC204...

  • Page 25: Printed Wiring Board

    CDX-T70MX 5-8. PRINTED WIRING BOARD – MAIN Board (Conductor Side) – • Semiconductor Location Ref. No. Location MAIN BOARD (CONDUCTOR SIDE) IC202 IC203 IC302 M104 (EVEVATOR) (CHASSIS) SW301 MAGAZINE DETECT (CHASSIS) IC302 IC202 IC203 EVEVATOR HEIGHT SENSOR (CHASSIS) (11) 1-683-527-...

  • Page 26: Schematic Diagram - Main Board (1/3)

    DATA B.DATA RB603 RST.I 100k B.UP R201 JACK B.UP IC201 BOARD BA8272AFV-E2 CN901 B.UP BUS INTERFACE R205 (Page 31) (FOR SONY BUS) C206 C204 1000 Q201 2SB1184TLR IC202 RESET SIGNAL IC204 NJM2396F08 Q205 XC61CN2702NR GENERATOR Q201,205 MSD601-RT1 S-RAM +3.3V REGULATOR...

  • Page 27: Schematic Diagram - Main Board (2/3)

    CDX-T70MX 5-10. SCHEMATIC DIAGRAM – MAIN Board (2/3) – • • See page 29 for Waveforms. See page 32 for IC Block Diagrams. (2/3) R505 C511 100k 100p R503 Q502 UN2225 C508 MUTING Q503 UN2225 MUTING R506 C512 100k 100p...

  • Page 28: Schematic Diagram - Main Board (3/3)

    CDX-T70MX 5-11. SCHEMATIC DIAGRAM – MAIN Board (3/3) – • • See page 29 for Waveforms. See page 32 for IC Block Diagram. (Page 27) (3/3) FB501 X501 16.9344MHz C420 C414 R518 100p R417 R416 R418 C413 CN202 XWRE R/RW_SEL...
  • Page 29 CDX-T70MX • Waveforms – RF Board – – MAIN Board – 1 IC101 qg (RFAC) 1 IC301 yg (EXTAL) 5 IC501 1 (BCK) 9 IC401 ih (LRCK) +0.3 Vp-p 3.3 Vp-p 3.3 Vp-p –0.4 2.2 Vp-p 81.4 ns 472 ns 22.7 µ...

  • Page 30: Printed Wiring Boards - Jack Board

    CDX-T70MX 5-12. PRINTED WIRING BOARDS – JACK Board – (FOR SONY BUS) JACK BOARD JACK BOARD (CONDUCTOR SIDE) (COMPONENT SIDE) CN902 (11) 1-683-528- JACK FLEXIBLE BOARD (Page 24) MAIN BOARD CN201 (CHASSIS) (11) 1-683-528-...

  • Page 31: Schematic Diagram - Jack Board

    CDX-T70MX 5-13. SCHEMATIC DIAGRAM – JACK Board – CN902 CN901 FB901 FB902 AGND AGND (Page 26) FB903 MAIN BUSON BUSON BOARD (1/3) CN201 DATA DATA B.UP B.UP PS901 B.UP B.UP JACK FLEXIBLE BOARD (CHASSIS)
  • Page 32 CDX-T70MX • IC Block Diagrams – RF Board – IC101 CXA2581N-T4 RW/ROM DC OFST RFDCI – – RFDCO – RW/ROM VOFST APC AMP EQ ON/OFF RFAC EQ IN RW/ROM RFAC AC SUM SUMMING VOFST – – RW/ROM TE BAL RW/ROM –...
  • Page 33 CDX-T70MX IC201 LA6576L-TE-L S-GND THERMAL SHUT DOWN CH2-4 INPUT MUTE2 MUTE VCC2 MUTE1 MUTE VLO– OUTPUT VIN4 CONTROL VLO+ VIN4– VO4+ VIN4+ LEVEL SHIFT VO4– VREF-IN VIN1/VREF VIN1 (VREF)-SW SWITCH VO3+ LEVEL VREF-OUT (CH1) SHIFT 5VREG VO3– – REG-OUT –...
  • Page 34 CDX-T70MX IC401 CXD3027R 120 119 118 117 116 115 114 113 112 111 110 109 108 107 106 105 104 103 102 101 100 99 98 97 96 95 94 93 92 91 ERROR CLOCK PCMD CORRECTOR GENERATOR SELECTOR LRCK...
  • Page 35 CDX-T70MX IC501 PCM1748E/2K 15 14 ZERO DETECT SYSTEM FUNCTION CLOCK OUTPUT AMP AND CONTROL LOW-PASS FILTER MANAGER CONVERTER INTERFACE 8 TIME OVER SAMPLING ENHANCED DIGITAL FILTER MULTI-LEVEL WITH SYSTEM DELTA-SIGMA FUNCTION CLOCK MODULATOR CONTROLLER SERIAL OUTPUT AMP AND INPUT CONVERTER...
  • Page 36 CDX-T70MX IC601 CXD9684R-004 16 CE AD10 SWITCH 15 AD5 ROUND & LIMIT 14 LRCKIA VDDT C-POINTER REGISTER GENERAL OUTPUT 13 BCKIA PORT ADDRESS Y-POINTER CALC. REGISTER 12 SDI0 2 SETS 11 AD4 X-POINTER REGISTER AUDIO 10 AD3 ERAM 2k WORD...

  • Page 37: Ic Pin Function Description

    CDX-T70MX 5-14. IC PIN FUNCTION DESCRIPTION • MAIN BOARD IC301 HD6432238RWN22TEIV (SYSTEM CONTROLLER) Pin No. Pin Name Description TEST Test mode setting terminal “L”: test mode Not used DECXRST Reset signal output to the CD-ROM/MP3 decoder “L”: reset DECSTBY Standby mode control signal output to the CD-ROM/MP3 decoder “H”: standby...
  • Page 38 Sub system clock input terminal Not used (fixed at “L”) System reset signal input from the SONY bus interface and reset signal generator “L”: reset For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”...

  • Page 39: Exploded Views

    CDX-T70MX Ver 1.1 SECTION 6 EXPLODED VIEWS NOTE: • -XX and -X mean standardized parts, so they • Items marked “*” are not stocked since they The components identified by mark 0 or dotted line with mark may have some difference from the original are seldom required for routine service.

  • Page 40: Mechanism Deck Section-1 (Mg-276A-159)

    CDX-T70MX 6-2. MECHANISM DECK SECTION-1 (MG-276A-159) mechanism deck section-2 M104 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark A-3315-334-D CHASSIS ASSY, MAIN 3-701-440-21 WASHER, 3.5 3-048-814-01 SCREW (M1.7X2.2) M104 A-3315-337-A MOTOR ASSY, MD (ELEVATOR) 3-227-131-01 BELT (TS)

  • Page 41: Mechanism Deck Section-2 (Mg-276A-159)

    CDX-T70MX 6-3. MECHANISM DECK SECTION-2 (MG-276A-159) M101 M103 The components identified by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number specified. Ref. No. Part No. Description Remark Ref. No. Part No.

  • Page 42: Electrical Parts List

    CDX-T70MX SECTION 7 JACK MAIN ELECTRICAL PARTS LIST NOTE: • Due to standardization, replacements in the • Items marked “*” are not stocked since they The components identified by mark 0 or dotted line with mark parts list may be different from the parts speci- are seldom required for routine service.
  • Page 43 CDX-T70MX MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C605 1-164-156-11 CERAMIC CHIP 0.1uF < RESISTOR > C606 1-164-156-11 CERAMIC CHIP 0.1uF R201 1-216-841-11 METAL CHIP 1/10W C607 1-128-934-91 CERAMIC CHIP 0.33uF R202 1-218-739-11 RES-CHIP...
  • Page 44 CDX-T70MX MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R604 1-216-845-11 METAL CHIP 100K 1/10W < IC > R615 1-216-814-11 METAL CHIP 1/10W R616 1-216-814-11 METAL CHIP 1/10W IC101 8-752-089-74 IC CXA2581N-T4 R618 1-216-857-11 METAL CHIP...
  • Page 45 CDX-T70MX Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark MISCELLANEOUS ************** 1-757-747-11 CORD (WITH CONNECTOR) (BUS/RCA) 1-680-823-11 JACK FLEXIBLE BOARD 1-680-824-12 OP FLEXIBLE BOARD 0 114 8-820-103-11 OPTICAL PICK-UP KSS-720A/C-RP 1-680-822-11 MAIN FLEXIBLE BOARD M101 A-3307-854-A MOTOR COMPLETE ASSY, SLED...

  • Page 46: Revision History

    CDX-T70MX REVISION HISTORY Clicking the version allows you to jump to the revised page. Also, clicking the version at the upper right on the revised page allows you to jump to the next revised page. Ver. Date Description of Revision 2002.03...

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