Sony CDX-60-X Service manual

CDX-60X

SERVICE MANUAL

Ver 1.1 2000. 08

SPECIFICATIONS

US Model

Model Name Using Similar Mechanism CDX-636 CD Drive Mechanism Type MG-251A-137 Optical Pick-up Name KSS-720A/K1NP

COMPACT DISC CHANGER

TABLE OF CONTENTS

1. SERVICING NOTES ................................................ 3

2. GENERAL ................................................................... 3

Installation....................................................................... 4

Connections ..................................................................... 4

3. DISASSEMBLY ......................................................... 5

4. MECHANISM DECK ASSEMBLY.................... 11

5. MECHANICAL ADJUSTMENT .......................... 13

6. ELECTRICAL CHECK .......................................... 14

7. DIAGRAMS

7-1. Block Diagram – RF SERVO/

DA CONVERTER Section – .......................................... 17

7-2. Block Diagram – BUS CONTROL/

POWER SUPPLY Section – ........................................... 18

7-3. Note for Printed Wiring Boards and

Schematic Diagrams ....................................................... 19

7-4. Printed Wiring Boards – RF/LSW Boards – ................. 20

7-5. Schematic Diagram – RF/LSW Boards –...................... 21

7-6. Printed Wiring Boards

– MAIN Board (Component Side) – .............................. 22

7-7. Printed Wiring Board

– MAIN Board (Conductor Side) – ................................ 23

7-8. Schematic Diagram – MAIN Board (1/2) – .................. 24

7-9. Schematic Diagram – MAIN Board (2/2) – .................. 25

7-10. Printed Wiring Boards – JACK/SWITCH Boards – ..... 26

7-11. Schematic Diagram – JACK/SWITCH Boards – .......... 26

7-12. IC Pin Function Description ........................................... 32

8. EXPLODED VIEWS ................................................ 35

9. ELECTRICAL PARTS LIST ............................... 40

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH MARK 0 ON THE SCHEMA TIC 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.

Flexible Circuit Board Repairing

• Keep the temperature of the soldering iron around 270 ˚C during repairing.

• Do not touch the soldering iron on the same conductor of the circuit board (within 3 times).

• Be careful not to apply force on the conductor when soldering or unsoldering.

Notes on chip component replacement

• Never reuse a disconnected chip component.

• Notice that the minus side of a tantalum capacitor may be damaged by heat.

Ver 1.1 2000. 08

SECTION 1

SERVICING NOTES

SECTION 2

GENERAL

This section is extracted from instruction manual.

NOTES ON HANDLING THE OPTICAL PICKUP BLOCK OR BASE UNIT

The laser diode in the optical pick-up block may suffer electrostatic breakdown because of the potential difference generated by the charged electrostatic load, etc. on clothing and the human body . During repair, pay attention to electrostatic breakdown and also use the procedure in the printed matter which is included in the repair parts. The flexible board is easily damaged and should be handled with care.

NOTES ON LASER DIODE EMISSION CHECK

The laser beam on this model is concentrated so as to be focused on the disc reflective surface by the objective lens in the optical pick-up block. Therefore, when checking the laser diode emission, observe from more than 30 cm away from the objective lens.

CAUTION

Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure.

If the optical pick-up block is defective, please replace the whole optical pick-up block. Never turn the semi-fixed resistor located at the side of optical pick-up block.

DISC MAGAZINE GETTING OUT PROCEDURE ON THE POWER SUPPLY IS OFF

Remove the COVER (LOWER T) beforehand

1) Press the lever (ML.S) assy in the direction of arrow A.

2) Removal the magazine assy.

Note: T ak e out the magazine only w hen the tray is completely within the

magazine. If the disk or tray is sticking out, turn on the power and eject the magazine.

Lever (ML.S)

Magazine ass’y

OPTICA PICK-UP BLOCK

SEMI-FIXED RESISTOR

SECTION 3

)

DISASSEMBLY

Note: Follow the disassembly procedure in the numerical order given.

COVER (UPPER T), FRONT PANEL ASS’Y

1 screw

(PTT2.6 × 6)

3 screw

(PTT2.6 × 6)

4 lever (FLT)

3 screw (PTT2.6 × 6)

5 cover (upper T)

3 screw (PTT2.6 × 6

4 lever (FLT)

2 front panel ass’y

MECHANISM DECK (MG-251A-137)

2 tension coil spring (FL)

1 two dampers (250T)

filament tape

1 screw (PTT2.6 × 6)

4 mechanism deck (MG-251A-137)

2 tension coil spring (FL)

3 jack flexible board

(CNJ901)

1 two dampers (250T

JACK BOARD

Remove the jack board of the arrow.

1 ground point screw

(PTT2.6 × 6)

2 jack board

MAIN BOARD, SLIDE VARIABLE RESISTOR (ELEVATOR HEIGHT SENSOR) (RV202)

1 main flexible board

(CNJ101)

5 screw (FP)

2 Remove three solders of

the slide variable resistor (RV202).

5 two screws (FP)

6 main board

2 Remove two solders of

the elevator motor leads (M104).

2 Remove two solders of

the switch board leads.

7 screw

(PTT2 × 4)

8 slide variable resistor

(elevator height sensor) (RV202)

4 heat sink (T)

3 screw (PTT2 × 4)

ELJ MOTOR ASS’Y (ELEVATOR) (M104)

2 bracket (EVM.S)

1 screw

(PTT2 × 4)

3 ELJ motor ass’y (elevator)

(M104)

ESCUTCHEON (T)

2 Remove the claw

in the direction of arrow A.

4 Remove the ditch

in the direction of arrow B.

5 Remove the escutcheon (T)

3 two claws

in the direction of arrow C.

3 claw

4 ditch

1 screw (T)

CHASSIS (U.S) SUB ASS’Y

1 three screws

(PTT2 × 4)

3 Remove the edge

in the direction

of arrow A.

4 Remove the chassis (U.S)

sub ass’y in the direction of arrow B.

CHASSIS ASS’Y

1 screw

(PTT2 × 4)

5 spring (SUT)

1 two screws

(PTT2 × 4)

4 Remove the chassis ass’y

5 spring (stopper.lower)

1 Turn the gear (EVD.S) fully

in the direction of arrow A.

in the direction of arrow B.

RF BOARD

3 two screws

(PS2 × 4)

3 two screws

(PS2 × 4)

2 Remove four solders

of the LSW board leads and spindle motor leads (M102).

2 Remove two solders

of the sled motor leads (M101).

1 OP flexible board (CN102).

4 RF board

SLED MOTOR ASS’Y (251) (M101), OPTICAL PICK-UP (KSS-720A/K1NP)

4 Turn shaft (feed) ass’y

in the direction of the arrow, then remove it.

1 two precision screws

(P2 × 3)

2 sled motor ass’y (251)

(M101)

3 optical pick-up

(KSS-720A/K1NP)

OP flexible board

Note: After connecting OP flexible board,

fix it with adhesive sheet to optical pick-up.

adhesive sheet

optical pick-up

LSW BOARD, SPINDLE MOTOR (S) SUB ASS’Y (M102)

)

8 two precision screws

(P1.7 × 2.2)

3 spring (chucking)

6 retainer (disc

1 precision screw

(P2 × 2.5)

2 LSW board

ELJ MOTOR ASS’Y (CHUCKING) (M103)

2 two screws

(PTT2 × 4)

4 precision scre

5 bracket (CP)

9 Remove the spindle motor (S) sub ass’y (M102)

in the direction of the arrow.

1 Remove two solders of

the chucking motor leads (M103).

(P2 × 2.2)

3 retainer (CHM)

4 ELJ motor

ass’y (chucking) (M103)

SECTION 4

)

MECHANISM DECK ASSEMBLY

Note: Follow the assembly procedure in the numerical order given.

OPTICAL PICK-UP COMPLETE ASS’Y

1 Move the lever (LOCK 3A) in the direction of arrow A,

and return it a little in the direction of arrow B

chuck plate

from the position where the chuck plate is moved down to the lower limit.

3 stop ring 2.0 (E type

shaft (A)

GEAR (LOMINI)/(LOAD 1) ASS’Y

gear (LOAD 2)

gear (LOMINI)

chuck plate

4 tension spring (DH)

2 optical pick-up complete ass’y

Note: Insert the shaft (A) first.

2 Attach the gear (LOMINI) at the position

shown in Fig. A.

shaft (rotary prevention C)

1 Move the lever (LOCK 3A)

fully in the direction of arrow B to move the chuck plate up.

marking Fig. A

3 Attach the gear (LOAD 1) ass’y

with its facing inside.

slit

4 stop ring 1.5 (E type)

OPERATION CHECK

Confirm that the slider moves in the direction of arrow C to move down the chuck plate if the gear (LOAD 1) is rotated in the direction of arrow or the chuck plate moves up and the slider mov es in the direction of arrow

if the gear is rotated in the direction of arrow B.

chuck plate

slider

gear (LOAD 1) ass’y

MECHANICAL ADJUSTMENT

• Elevator Height (Address) Adjustment

SECTION 5

Note: This adjustments is necessary when the system controller (IC201),

variable resistor (RV201), slider (R), slider (L), or chassis (ELV) was replaced for any repair.

Connection:

power supply

(DC 14.4 V)

master unit

GND

BUS cable

compact disc changer

CONTROL connector (CN901)

Adjustment Method:

1. Connect this set to the master unit (e.g. XR-C5300X), load a disc magazine, and place the set vertically as shown below.

2. Connect the regulated power supply to the master unit, and turn the power on.

3. Press the DISC button on the master unit and select DISC 5.

4. At this time, if the elevator shaft does not position between comb teeth A and B at addresses 5 and 6 as shown below, adjust the following.

5. Press repeatedly the DISC + and – buttons on the master unit so that the elevator shafts moves from address 6 to address 5, or from 5 to 6. At this time, adjust RV201 on the main board so that the elevator shaft positions smoothly between comb teeth A and B.

6. Further, place the set horizontally and make same adjustment as mentioned above.

7. After adjustment at addresses 5 to 6 is finished, check all operations from addresses 1 to 10 with the set placed vertically and horizontally respectively to confirm that the elevator shaft positions in a range between comb teeth A to B.

comb tooth at address 6

comb tooth at address 5

comb tooth at address 6

elevator shaft

OK NG

elevator shaft

comb tooth at address 5

RV201

SECTION 6

)

ELECTRICAL CHECK

Note:

1. This adjustment is performed with the set placed horizontally.

2. Power supply voltage: DC14.4 V (more than 3 A).

3. Be sure to use the disc “YEDS-18” parts code: 3-702-101-01, b ut only when indicated.

Connection:

power supply

(DC 14.4 V)

master unit

GND

BUS cable

FOCUS BIAS CHECK

– RF BOARD – (Component Side)

oscilloscope

(AC range)

+ –

TP (VC)

IC101

(RFO)

compact disc changer

CONTROL connector (CN901)

Procedure:

1. Connect the oscilloscope to TP (RFO) and TP (VC) on the RF board.

2. Put the set into play mode by loading the disc (YEDS-18).

3. Confirm that oscilloscope waveform is clear and check RF signal level is correct or not.

Note:

Clear RF signal waveform means that the shape “◊” can be clearly distinguished at the center of the waveform.

RF signal waveform

VOLT/DIV: 200 mV TIME/DIV: 500 ns (10 : 1 probe in use

level: 1.4 ± 0.3 Vp-p

When observing the eye pattern, set the oscilloscope to AC range and raise the vertical sensitivity so that it may be easily seen.

TRACKING OFFSET CHECK

– RF BOARD – (Component Side)

oscilloscope

(DC range)

–

TP (VC)

IC101

TP (TE)

Procedure:

1. Connect the oscilloscope to TP (TE) and TP (VC) on the RF board.

2. Put the set into play mode by loading the disc (YEDS-18).

3. Press the . , > buttons on the master unit, and check the traverse waveform*.

4. Confirm that the oscilloscope waveform is symmetrical on the top and bottom in relation to 0 V dc, and check this level.

* Traverse waveform: This is the tracking error wave form appears

when crossing the track.

Traverse waveform

0 V

A=B

traverse waveform (100 track jump waveform)

VOLT/DIV: 500 mV TIME/DIV: 2 ms Center: 0 V

MEMO

SECTION 7

DIAGRAMS

7-1. BLOCK DIAGRAM – RF SERVO/DA CONVERTER Section –

CDX-60X

FILTER

DETECTOR

PICK-UP BLOCK

(TRACKING)

(FOCUS)

LASER DIODE

PD LD

OPTICAL

(KSS-720A)

2-AXIS DEVICE

I-V AMP

(SPINDLE)

(CHUCKING)

M101

(SLED)

M102

M103

AUTOMATIC

POWER

CONTROL

Q101

FOCUS/TRACKING ERROR AMP

TRACKING/FOCUS COIL DRIVE,

SLED/SPINDLE/CHUCKING

VO3+

VO3–

VO4+

VO4–

VO2+

VO2–

VO1+

VO1–

VL0+

VL0–

E I-V AMP

F I-V AMP

APC LD

AMP

MOTOR DRIVE

COIL

DRIVE

COIL

DRIVE

MOTOR

DRIVE

MOTOR

DRIVE

MOTOR

DRIVE

SUMMING

IC201

AMP

FOCUS ERROR

RF AMP,

IC101

AMP

APC PD

AMP

VIN3+

VIN3–

VIN4+

VIN4–

VIN2+

VIN2–

VIN1–B

FWD

REV

RF EQ

AMP

TRACKING

ERROR

AMP

AGC

RFO

LDON

HOLD SW

AGCCONT

CN901 (1/2)

ANALOG OUT

63 66 6564

FILI

PCO

FILO

CLTV

RFAC

ASYI ASYO

DIGITAL SERVO

CLV

ASYMMENTRY

CORRECTOR

RFDC

54 50 52 51

ANALOG SWITCH

A/D CONVERTER

SIGNAL PROCESS

ON : When the optical pick-up is inner position

TEDR

TRDR

FFDR

FRDR

SFDR

SRDR

MDP

60 59

LDON

HOLD

AGC

PWM GENERATOR

DIGITAL

RFDC

OP AMP

DIGITAL

PLL

MIRR DFCT

FOK

EMPH

EFM

DE-

MODULATOR

SUBCODE PROCESS

SW3

(LIMIT)

D/A

INTER-

FACE

32k RAM

INTERNAL BUS

CORRECTOR

PCMD

LRCK

BCK

ERROR

CPU

INTERFACE

SERVO AUTO

SEQUENCER

SERVO

INTERFACE

SSTP

EMPHI

79 77 81

GFS

DATA CLOK XLAT

SENS

SQSO SQCK SCOR

SCLK

FOK

XRST

80 78 82

13 15 14

6 7

SERIAL

PCMDI LRCKI BCKI

INTERFACE

DIGITAL SIGNAL PROCESSOR,

DIGITAL FILTER, D/A CONVERTER,

DIGITAL SERVO PROCESSOR

IC101

DIGITAL FILTER,

NOISE SHAPER

LDON HOLD AGC

54 55 56

6 7 5

77 79 82

INTEGRATOR

LDON AGCHOLD RF AGC

GFS

CDDATA CDCLK CDXLT

SENS

SQSO SQCK SCOR

SCLK

FOK

XRST

AOUT2

PWM

AOUT1

SYSTEM CONTROLLER

IC201 (1/2)

CLOCK

GENERATOR

AMUTE

BUFFER

TIMING

LOGIC

LOUT

ROUT

XTAO

XTAI

GND-ISOLATION

16.9344MHz

MUTING CONTROL Q401, 402

X130

IC401

MUTING

Q410, 420

AIN2

AIN1

• SIGNAL PATH

: CD PLAY

CH. F

CH. R

LIMSW

ON : When completion of the disc save operation

ON : When completion of the disc chucking operation

SW1

(SAVE END DETECT)

SW2

(CHUCKING END DETECT)

LOAD1

LOAD2

1717

CDX-60X

7-2. BLOCK DIAGRAM – BUS CONTROL/POWER SUPPLY Section –

SYSTEM CONTROLLER

ON : When magazine is set

SW201

MAGAZINE IN/OUT

DETECT

MGLK

IC201 (2/2)

MCK

RV201

ELEVATOR HEIGHT

(ADDRESS)

M104

(ELEVATOR)

ELEVATOR

MOTOR DRIVE

IC301

OUT1

OUT2

MOTOR

DRIVE

S-RAM

IC202

IN1 IN2

A0–A14

10–3, 25, 24, 21, 23, 2, 26, 111–13, 15–19

3 4

X201

12MHz

ELVF

74 73

ELVR

XTAL

EXTAL

28–21, 36–3020–13

RAMA0–RAMA14RAMIO1–RAMIO8

EHS

VREF

ELVON

BUCHK

EJECT

CDON

RESET

RV202

ELEVATOR HEIGHT

SENSOR

REFERENCE VOLTAGE

BATTERY

CHECK

SW801

Q301, 302

SWITCH

Q201

B. UP +5V

RESET SIGNAL

GENERATOR

IC303

B. UP +5V

D306

B. UP +5V

BUS +5V

BUS INTERFACE

(FOR SONY BUS)

IC302

D307

DRIVER +8V

DAC/SERVO +5V

D308

+8V

REGULATOR

IC304

+5V

REGURATOR

IC305

+5V

REGURATOR

Q303

CN901 (2/2)

CONTROL

B. UP

DO0–DO7

RAMCE

RAMWE

SCLK

BUSON

10 6

SCK

11 4

BUSON OUT

1 12

BUSON OUT

13 2

RESET

8 7

RESET

SWITCH

DATA

CLK

LOF

BUSON IN

RST

DATA

CLK

BUSON

RST

1818

• Circuit Boards Location

7-3. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS

SWITCH board

JACK board

LSW board

MAIN board

RF boar

Note on Printed Wiring Boards:

• X : parts extracted from the component side.

• Y : parts extracted from the conductor side.

•

: internal component.

• b : Pattern from the side which enables seeing. (The other layers' patterns are not indicated.)

Caution: Pattern face side: Parts on the pattern face side seen from (Conductor Side) the pattern face are indicated. Parts face side: Parts on the parts face side seen from (Component Side) the parts face are indicated.

Note on Schematic Diagram:

• All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums.

• All resistors are in Ω and 1/ specified.

•

: internal component.

W or less unless otherwise

• C : panel designation.

Note: The components identified by mark 0 or dotted line

with mark 0 are critical for safety. Replace only with part number specified.

• U : B+ Line.

• H : adjustment for repair.

• Power voltage is dc 14.4V and fed with regulated dc power supply from CD changer controller.

• Voltages and waveforms are dc with respect to ground under no-signal conditions. no mark : CD PLAY

: Impossible to measure

∗

• Voltages are tak en with a V OM (Input impedance 10 MΩ). Voltage variations may be noted due to normal production tolerances.

• Waveforms are taken with a oscilloscope. Voltage variations may be noted due to normal production tolerances.

• Circled numbers refer to waveforms.

• Signal path. J : CD PLAY

1919

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