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Sony CDX-T68X Service Manual

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3 7 63 1515 0
SERVICE MANUAL
Ver 1.1 2001.05
TE
L 13942296513
www
.
Sony Corporation
9-870-271-12
2001E0500-1
e Vehicle Company
C 2001.5
Shinagawa Tec Service Manual Production Group
http://www.xiaoyu163.com
System
Frequency response
Wow and flutter
Signal-to-noise ratio
Outputs
Current drain
Operating temperature
Dimensions
Mass
Power requirement
Supplied accessories
Design and specifications subject to change without notice.
x
ao
u163
y
i
http://www.xiaoyu163.com
CDX-T68X
2 9
8
Model Name Using Similar Mechanism
CD Drive Mechanism Type
Optical Pick-up Name
SPECIFICATIONS
Q Q
3
6 7
1 3
1 5
Compact disc digital audio system
5 – 20,000 Hz
Below the measurable limit
95 dB
BUS control output (8 pins)
Analog audio output (RCA pin)
800 mA (during CD playback)
800 mA (during loading or ejecting a
disc)
–10°C to +55°C
Approx. 234.4 × 60 × 159.5 mm (w/h/d)
not incl. projecting parts and controls
Approx. 1.5 kg
12 V DC car battery (negative earth)
Disc magazine (1)
Parts for installation and connections
(1 set)
COMPACT DISC CHANGER
co
.
9 4
2 8
US Model
Canadian Model
AEP Model
UK Model
E Model
NEW
MG-276A-159
KSS-720A
0 5
8
2 9
9 4
2 8
m
9 9
9 9

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Summary of Contents for Sony CDX-T68X

  • Page 1: Te L 13942296513

    CDX-T68X 3 7 63 1515 0 SERVICE MANUAL US Model Canadian Model Ver 1.1 2001.05 AEP Model UK Model E Model Model Name Using Similar Mechanism CD Drive Mechanism Type MG-276A-159 Optical Pick-up Name KSS-720A SPECIFICATIONS L 13942296513 System...

  • Page 2: Servicing Notes

    DE FONCTIONNEMENT. NE REMPLACER CES COM- which have the “CAUTION LABEL” attached, please be sure to POSANTS QUE PAR DES PIÈCES SONY DONT LES put a new CAUTION LABEL (3-223-913-11) to the chassis (U.S) NUMÉROS SONT DONNÉS DANS CE MANUEL OU sub assy.

  • Page 3: Table Of Contents

    CDX-T68X SECTION 1 This section is extracted from instruction manual. 3 7 6 3 1 5 1 5 0 GENERAL TABLE OF CONTENTS Inserting a disc Insertion d un disque Einlegen von CDs Een disc inbrengen Inserimento di un disco...

  • Page 4: Installation

    • Utilizzare solo le viti in dotazione. To the car audio (the master unit) compatible with the Sony Bus or the source selector • Pour garantir la sécurité de l’installation, utiliser beschädigt werden. Achten Sie auch darauf, daß die •...

  • Page 5: Disassembly

    CDX-T68X SECTION 2 DISASSEMBLY 3 7 63 1515 0 • 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 6: Front Panel (S) Assy, Case (Upper S)

    CDX-T68X 3 7 63 1515 0 Note: Follow the disassembly procedure in the numerical order given. 2-2. FRONT PANEL (S) ASSY, CASE (UPPER S) 3 screw (PTT2.6 × 6) 4 case (upper S) 5 lever (FLT. 838) 1 screw (PTT2.6 ×...

  • Page 7: Jack Board

    CDX-T68X 3 7 63 1515 0 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) L 13942296513 2-5.

  • Page 8: Main Board

    CDX-T68X 3 7 63 1515 0 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).

  • Page 9: Md Motor Assy (Elevator) (M104)

    CDX-T68X 3 7 63 1515 0 2-8. MD MOTOR ASSY (ELEVATOR) (M104) 1 screw (PTT2 × 3) 2 bracket (MDM) 3 MD motor assy (elevator) (M104) L 13942296513 2-9. LE MOTOR ASSY (CHUCKING) (M103) 3 screw (P1.7 × 2.2)

  • Page 10: Rf Board

    CDX-T68X 3 7 63 1515 0 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).

  • Page 11: Optical Pick-Up (Kss-720A)

    CDX-T68X 3 7 63 1515 0 2-12. OPTICAL PICK-UP (KSS-720A) 2 two screws 6 gear (SL2) 8 screw (P2 × 3) (P2 × 3) 5 washer 3 spring (sled front point) (DIA. 1.2) 9 detent spring (sled) 7 bearing (sled) assy...

  • Page 12: Lever (Chk.l) Assy, Lever (Chk.r) Assy

    CDX-T68X 3 7 63 1515 0 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...

  • Page 13: Mechanical Adjustment

    CDX-T68X SECTION 3 3 7 63 1515 0 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 14: Electrical Check

    CDX-T68X SECTION 4 ELECTRICAL CHECK 3 7 63 1515 0 Note: Focus Bias Check 1. This check is performed with the set placed horizontally. 2. Power supply voltage: DC14.4 V (more than 3 A). Connection: 3. Be sure to use the disc “YEDS-18” parts code: 3-702-101-01, but only –...
  • Page 15 CDX-T68X 3 7 63 1515 0 Tracking Offset Check Connection: – RF Board (Component Side) – oscilloscope (DC range) – TP (TE) IC101 TP (VC) L 13942296513 Procedure: 1. Connect the oscilloscope to TP (TE) and TP (VC) on the RF board.
  • Page 16 CDX-T68X 3 7 63 1515 0 MEMO L 13942296513 u163 http://www.xiaoyu163.com...

  • Page 17: Diagrams

    CDX-T68X SECTION 5 3 7 6 3 1 5 1 5 0 DIAGRAMS 5-1. BLOCK DIAGRAM – SERVO Section – DIGITAL FILTER, D/A CONVERTER, DIGITAL SIGNAL PROCESSOR, FILTER LOW-PASS FILTER DIGITAL SERVO PROCESSOR, IC501 D-RAM CONTROLLER IC401 DIGITAL DOUT...

  • Page 18: Block Diagram - Bus Control/Power Supply Section

    IC204 CN902 (2/2) IC901 REGULATOR µCOM B+ B. UP 1 3 9 4 2 2 9 6 5 1 3 Q201, 205 BUS INTERFACE (FOR SONY BUS) IC201 DATA UNI SI DATA UNI SO UNI CK BUSON OUT BUSON BUSON...

  • Page 19: Note For Printed Wiring Boards And Schematic Diagrams

    CDX-T68X • Waveforms 3 7 6 3 1 5 1 5 0 – MAIN Board – – RF Board – 5-3. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS 1 IC101 qg (RFAC) (CD play mode) 1 IC301 ia (X1) (CD play mode)

  • Page 20: Printed Wiring Boards - Rf Board

    CDX-T68X Ver 1.1 2001.05 3 7 6 3 1 5 1 5 0 5-4. 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...

  • Page 21: Schematic Diagram - Rf Board

    CDX-T68X Ver 1.1 2001.05 3 7 6 3 1 5 1 5 0 5-5. SCHEMATIC DIAGRAM – RF Board – • • See page 19 for Waveforms. See page 27 for IC Block Diagrams. Q101 C110 2SB624T1-BV345 C111 R119 AUTOMATIC 6.3V...

  • Page 22: Printed Wiring Boards - Main Board (Component Side)

    CDX-T68X 5-6. PRINTED WIRING BOARDS – MAIN Board (Component Side) – Ver 1.1 2001.05 3 7 6 3 1 5 1 5 0 • Semiconductor Location Ref. No. Location D201 D202 D203 D205 D206 C307 D207 MAIN BOARD (COMPONENT SIDE)

  • Page 23: Printed Wiring Board - Main Board (Conductor Side)

    CDX-T68X 5-7. PRINTED WIRING BOARD – MAIN Board (Conductor Side) – • Semiconductor 3 7 6 3 1 5 1 5 0 Location Ref. No. Location MAIN BOARD (CONDUCTOR SIDE) IC202 IC203 (CHASSIS) EVEVATOR HEIGHT SENSOR 1 3 9 4 2 2 9 6 5 1 3...

  • Page 24: Schematic Diagram - Main Board (1/2)

    SW301 B.UP RESET C203 -T146 MAGAZINE R201 (Page 26) B.UP CD-ROM/RW DETECT SELECT B.UP JACK SWITCH FLEXIBLE BUS INTERFACE BOARD (FOR SONY BUS) C202 4700p RAMA4 RAMIO2 RAMA5 RESET R301 C302 RAMA6 RAMIO3 0.01 C217 ELVR RAMIO4 0.01 Q201 ELVF...

  • Page 25: Schematic Diagram - Main Board (2/2)

    CDX-T68X Ver 1.1 2001.05 3 7 6 3 1 5 1 5 0 5-9. SCHEMATIC DIAGRAM – MAIN Board (2/2) – • • See page 19 for Waveforms. See page 27 for IC Block Diagrams. C508 C503 0.01 C501 0.01...

  • Page 26: Printed Wiring Boards - Jack Board

    5-10. PRINTED WIRING BOARDS – JACK Board – 5-11. SCHEMATIC DIAGRAM – JACK Board – CN902 CN901 JACK BOARD FB901 (COMPONENT SIDE) FB902 AGND AGND FB903 BUSON BUSON (FOR SONY BUS) DATA DATA B.UP B.UP IC901 B.UP (Page 24) B.UP JACK FLEXIBLE BOARD (CHASSIS)
  • Page 27 CDX-T68X 3 7 63 1515 0 • 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 –...
  • Page 28 CDX-T68X 3 7 63 1515 0 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)
  • Page 29 CDX-T68X 3 7 63 1515 0 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...
  • Page 30 CDX-T68X 3 7 63 1515 0 IC302 LB1930M-TLM BUFFER OUT1 MOTOR CONTROL DRIVE CIRCUIT CIRCUIT OUT2 BUFFER S-GND P-GND IC303 BR24C16FJ-E2 IC501 TC9464FN-EL 14 13 START STOP MICROCOMPUTER INTERFACE LOGIC SERIAL INTERFACE CIRCUIT CONTROL H.V. PUMP/TIMING CIRCUIT LOGIC 8 VCC...

  • Page 31: Ic Pin Function Description

    Serial data reading clock signal output to the CXD3027R (IC401) u163 SENS Internal status signal (sense signal) input from the CXD3027R (IC401) BUSON Bus on/off control signal input from the SONY bus interface (IC201) “H”: bus on BUCHK Battery detection signal input “L”: battery on http://www.xiaoyu163.com...
  • Page 32 70 to 74 Two-way data bus with the S-RAM Not used (open) RAMIO3 System reset signal input from the SONY bus interface (IC201) and reset signal generator (IC204) RESET “L”: reset For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”...
  • Page 33 CDX-T68X 3 7 63 1515 0 Pin No. Pin Name Description MAG SW Magazine detect switch (SW301) input terminal “L”: magazine is set Chucking end detect switch (SW102) input terminal SAVE SW “L”: When completion of the disc chucking, loading or save operation...

  • Page 34: Exploded Views

    CDX-T68X Ver 1.1 2001.05 SECTION 6 EXPLODED VIEWS 3 7 63 1515 0 NOTE: • Items marked “*” are not stocked since they • -XX and -X mean standardized parts, so they The components identified by mark 0 or dotted line with mark 0 are may have some difference from the original are seldom required for routine service.

  • Page 35: Mechanism Deck Section-1 (Mg-276A-159)

    CDX-T68X 3 7 63 1515 0 6-2. MECHANISM DECK SECTION-1 (MG-276A-159) elevator assy section M104 not supplied L 13942296513 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark A-3315-334-A CHASSIS ASSY, MAIN 3-227-133-01 BRACKET (MDM) u163 3-048-814-01 SCREW (M1.7X2.2)

  • Page 36: Mechanism Deck Section-2 (Mg-276A-159)

    CDX-T68X Ver 1.1 2001.05 3 7 63 1515 0 6-3. MECHANISM DECK SECTION-2 (MG-276A-159) M101 L 13942296513 not supplied not supplied M103 The components identified by Les composants identifiés par une mark 0 or dotted line with marque 0 sont critiques pour la mark 0 are critical for safety.

  • Page 37: Electrical Parts List

    CDX-T68X Ver 1.1 2001.05 SECTION 7 3 7 63 1515 0 ELECTRICAL PARTS LIST JACK MAIN 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 38 CDX-T68X Ver 1.1 2001.05 MAIN 3 7 63 1515 0 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark D203 8-719-071-34 DIODE RB521S-30-TE61 R403 1-216-845-11 METAL CHIP 100K 1/16W D205 8-719-421-24 DIODE MA8039-H-TX D206 8-719-071-34 DIODE RB521S-30-TE61...
  • Page 39 CDX-T68X Ver 1.1 2001.05 3 7 63 1515 0 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C204 1-162-962-11 CERAMIC CHIP 470PF R223 1-216-820-11 METAL CHIP 1/16W C205 1-162-962-11 CERAMIC CHIP 470PF C206 1-162-962-11 CERAMIC CHIP 470PF <...
  • Page 40 CDX-T68X 3 7 63 1515 0 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark PARTS FOR INSTALLATION AND CONNECTIONS ************************************** 3-225-809-01 BRACKET (S) * 502 X-3369-824-1 SCREW ASSY 1-590-519-21 CORD (WITH CONNECTOR) (BUS CABLE 5m) 1-590-874-11 CORD, CONNECTION (RCA PIN CORD 5m) +PSW4 ×...
  • Page 41 CDX-T68X 3 7 63 1515 0 MEMO L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 42 CDX-T68X 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 right on the revised page allows you to jump to the next revised page.

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