Sony SCDXE-680 Service manual

SCD-XE680

SERVICE MANUAL

Ver 1.0 2002.04

SPECIFICATIONS

When a super audio CD is played

Playing frequency range 2 Hz to 100 kHz Frequency response 2 Hz to 50 kHz (–3 dB) Dynamic range 103 dB or more Total harmonic distortion rate 0.0020 % or less Wow and flutter Value of measurable limit

When a CD is played

Frequency response 2 Hz to 20 kHz Dynamic range 98 dB or more Total harmonic distortion rate 0.0025 % or less Wow and flutter Value of measurable limit

(±0.001 % W. PEAK) or less

AEP Model

UK Model

Model Name Using Similar Mechanism NEW CD Mechanism Type CDM66B-DVBU6B Base Unit Name DVBU-6B Optical Pick-up Name KHM-234AMA

General

Laser: Semiconductor laser

(Super Audio CD: λ = 650 nm) (CD: λ = 780 nm)

Emission duration: continuous Power requirements 230 V AC, 50/60 Hz Power consumption 26 W Dimensions (w/h/d) 430 × 95 × 285 mm (w/h/d) (17 x 3 3/4 x 11 1/4 in.)

Mass (approx.) 3.9 kg (9 lbs 5 oz)

Supplied accessories

•Audio connecting cord

Stereo cable (1)

• Remote commander RM-SX700 (1)

• Size AA (R6) batteries (2)

incl. projecting parts

Output connector

Jack type

ANALOG OUT

DIGITAL (CD) OUT OPTICAL *

PHONES

*Output only the audio signals of the CD

9-873-931-01 Sony Corporation

2002D0500-1 Home Audio Company C 2002.04 Published by Sony Engineering Corporation

Phono jacks

Square optical output connector

Stereo phone jack

Output level

2 Vrms (at 50 kilohms)

–18 dBm

10 mW

Load impedance

Over 10 kilohms

Wave length: 660 nm

32 ohms

Design and specifications are subject to change without notice.

SUPER AUDIO CD PLAYER

SCD-XE680

SERVICING NOTES

SCD-XE680

NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT

The laser diode in the optical pick-up block may suffer electrostatic break-down because of the potential difference generated by the charged electrostatic load, etc. on clothing and the human body. During repair, pay attention to electrostatic break-down 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 objectiv e lens.

CLEANING OF OPTICAL PICK-UP LENS

In cleaning the lens of optical pick-up, use the air blower. Never use a cotton swab for cleaning the lens of optical pick-up, which otherwise causes a trouble.

RESETTING OPERATION AT POWER ON

If the power is turned on with a disc loaded in the set, a sequence of operation as shown below will be performed. (The operation varies depending on the type of disc) Condition: continue mode

(1) CD

1. Sled reverse move (sled in)

2. Disc detect

3. IC setting for CD

4. Servo error signal offset auto adjustment

5. Spindle kick for LD on

6. LD on

7. Focus search

8. Focus servo on

9. Spindle kick

10. Spindle servo on

11. E-F balance auto adjustment

12. Tracking & sled servo on

13. Focus bias auto adjustment

14. Focus servo gain auto adjustment

15. Tracking servo gain auto adjustment

16. Jump to lead-in area

17. Read TOC

18. Stop

(2) SACD (single layer)

1. Sled reverse move (sled in)

2. Disc detect

3. IC setting for SACD

4. Servo error signal offset auto adjustment

5. Spindle kick for LD on

6. LD on

7. Focus search

8. Focus servo on

9. Spindle kick

10. Spindle servo on

11. E-F balance auto adjustment

12. Tracking & sled servo on

13. Focus bias auto adjustment

14. Focus servo gain auto adjustment

15. Tracking servo gain auto adjustment

16. Jump to lead-in area

17. Read TOC

18. Stop

(3) SACD (dual layer)

1. Sled reverse move (sled in)

2. Disc detect

3. IC setting for SACD

4. Servo error signal offset auto adjustment

5. Spindle kick for LD on

6. LD on

7. Focus search

8. Focus servo on (layer 0)

9. Spindle kick

10. Spindle servo on

11. E-F balance auto adjustment (layer 0)

12. Tracking & sled servo on (layer 0)

13. Focus bias auto adjustment (layer 0)

14. Focus servo gain auto adjustment (layer 0)

15. Tracking servo gain auto adjustment (layer 0)

16. Jump to lead-in area

17. Read TOC

18. Focus jump (layer 0tlayer 1)

19. E-F balance auto adjustment (layer 1)

20. Tracking & sled servo on (layer 1)

21. Focus bias auto adjustment (layer 1)

22. Focus servo gain auto adjustment (layer 1)

23. Tracking servo gain auto adjustment (layer 1)

24. Focus Jump (layer 1tlayer 0)

25. Stop

3

SCD-XE680

)

HOW TO OPEN THE TRAY WHEN POWER SWITCH TURNS OFF

tray

A

cam (66)

1

Insert a tapering driver (3 mm in diameter) in the hole at the bottom of the unit, turn the cam (66) fully in the direction of arrow

A

.

tapering driver

DISPLAY BOARD SERVICE POSITION

In checking the DISPLAY board, prepare jig (extension cable J-2501-200-A : 1.00 mm Pitch, 11 cores, Length 300 mm.)

MAIN board (CN706)

DISPLAY board (CN801)

4

Connect jig (extension cable J-2501-200-A to the DISPLAY board (CN801) and MAIN board (CN706).

Front Panel

SECTION 2

GENERAL

SCD-XE680

This section is extracted from instruction manual.

CHECK qg CLEAR qh Disc tray 6 Display w; MENU qj MULTI/2CH qk Multi-Channel indicator 7 PHONE LEVEL qf

Rear Panel

ANALOG 2CH OUT L/R jacks 1 ANALOG 5.1CH OUT jacks 2

DIGITAL (CD) OUT OPTICAL jack 3 Mains lead 4

PHONES jack qd PLAY MODE 2 POWER 1 Remote sensor ql REPEAT 3 SACD/CD 5 TIME/TEXT 4

BUTTON DESCRIPTIONS

lAMSL dial qs A OPEN/CLOSE 8 H 9 X 0 x qa m/M wa

5

SCD-XE680

Remote Control

AyB 8 AMS ./> qa CHECK 9 CLEAR qk CONTINUE 2 DISPLAY MODE 3 ENTER qj INDEX >/. qd

LEVEL ADJ ql MULTI/2CH qh Number buttons 5 PROGRAM qf REPEAT 7 SACD/CD qg SHUFFLE 1 TIME/TEXT 4

BUTTON DESCRIPTIONS

>10 6

H w; X 0 x wa m/M qs

6

• This set can be disassembled in the order shown below.

3-1. DISASSEMBLY FLOW

SET

3-2. CASE (408226)

(Page 9)

SCD-XE680

SECTION 3

DISASSEMBLY

3-3. FRONT PANEL SECTION

(Page 9)

3-4. AUDIO BOARD,

MAIN BOARD (Page 10)

3-5. MECHANISM DECK

(CDM66B-DVBU6B) (Page 10)

3-6. BASE UNIT

(DVBU-6B) (Page 11)

7

SCD-XE680

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

3-2. CASE (408226)

two screws

2

(case 3 TP2)

3

4

case (408226)

3

1

two screws (BVTP3

×

8)

3-3. FRONT PANEL SECTION

6

three connectors (CN681, 953, 954)

qs

front panel section

0

screw (BV/RING)

– BOTTOM VIEW –

qa

two claws

7

qa

two claws

connector (CN904)

2

two screws (case 3 TP2)

5

wire (flat type) (11 core) (CN706)

8

lead with connector

3

8

two claws

2

1

tapering driver

4

loading panel assy

Note:When the power supply does not turn on,

rotate the cam with tepering driver (∅3 mm) as the figure shows, and the loading panel assy will be moved.

9

three screws (BVTP3 × 6)

3-4. AUDIO BOARD, MAIN BOARD

s

)

7

wire (flat type) (11 core) (CN706)

7

wire (flat type) (30 core) (CN708)

8

connector (CN703)

9

8

two connectors (CN704, 707)

screw (BVTT3

0

MAIN board

×

6)

1

two wires (flat type) (19 core) (CN302, 303)

2

four connectors



(CN301, 304, 305, 306)

9

5

PC board holder

6

AUDIO board

4

three screws (BVTT3

×

6)

3

screw (BVTT3

four screw (BV/RING)

SCD-XE680

×

6)

3-5. MECHANISM DECK (CDM66B-DVBU6B)

7

8

CD mechanism deck (CDM66B-DVBU6B)

– BOTTOM VIEW –

1

tapering driver

2

loading panel assy

4

three screws (BVTP3

×

8)

5

wire (flat type) (30core (CN708)

6

connector (CN151)

3

two claws

Note:When the power supply does not turn on,

rotate the cam with tepering driver ( and the loading panel assy will be moved.

∅

3 mm) as the figure shows,

9

SCD-XE680

3-6. BASE UNIT (DVBU-6B)

– BOTTOM VIEW –

cam (66)

base unit (DVBU-6B)

2

1

floating screw (DIA. 12)

3

base unit (DVBU-6B)

10

SECTION 4

TEST MODE

SCD-XE680

In this set, various checks are automatically performed by executing the commands in the test mode.

Note: This set mak es adjustment every optical pick-up and stores its result

in the EEPROM (IC903) on the MAIN board. Accordingly, if a combination of optical pick-up and EEPROM is changed, be sure to perform 4-3. SET CHECK. Also, perform 4-1. IC INTERFACE CHECK, 4-2. DISPLA Y CHECK, and 4-6. WA VEFORMS CHECK.

Disc for Test Mode

Various checks of this set require the following discs.

Model Type *1 Categor y Application

MODEL SATD-S5 (J-2501-215-A) SL SATD-S4 Optical waveform check (J-2501-184-A)

Not specified DL 12 cm disc Operation check PATD-012

(4-225-203-01) YEDS-18 Reference disc (3-702-101-01)

Not specified HYBRID 12 cm disc Operation check

CD

12 cm disc Reference disc

12 cm disc

Adjusted value check, Operation check,

Adjusted value check, Operation check, Optical waveform check

Setting Method of Test Mode

Turn the dial and the [MENU] button. Release the [MENU] button and the

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[ AMS ] dial in this order when “DIAG MODE” is displayed

on the fluorescent indicator tube.

Releasing Method of Test Mode

To release the test mode, tur n the [POWER] switch off.

Selection/Entry of Test Mode

To select and enter the “DIAG MODE”, operate as follows.

1. Rotate the [ AMS ] dial to select the menu, and press the [ AMS ] dial to enter.

2. The test is switched on or off alternately each time the

[ AMS ] dial is pressed.

3. To return to the previous step, rotate the [ AMS ] dial to select the desired item, and press the [ AMS ] dial to enter.

*1 SL: Single Layer

DL: Dual Layer

Test Mode Command List

The contents of test mode are as follows.

Note: Wrong operation in the test mode causes a trouble , thus requiring extreme care.

[POWER] button on while pressing the [ AMS ]

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l

L

LINE command (0X): Use mainly for a manufacturing line.

No. Name Description Remarks

00 RFAmp Read Each register set value of the IC001 (RF AMP) is displayed via RS-232C Not used for the servicing 05 DSP MON1 XUGF, XPCK, C2PO outputted from IC509 (CD DSP) Not used for the servicing 06 DSP MON2 MNT0, MNT1, MNT2, MNT3 outputted from IC509 (CD DSP) Not used for the servicing

07 DSP MON3 RFCK, XPCK, XROF, GTOP outputted from IC509 (CD DSP)

Electrical measurement, CD CLV jitter measurement

STANDARD command (1X): Use when the servo is applied by manual operation.

No. Name Description Remarks

12 LD ON/OFF The laser diode is turned on or off On or off are switched alternately 13 SPIN ON/OFF The spindle motor is rotated with the regulated voltage On or off are switched alternately 14 FSRV ON/OFF The focus servo is turned on or off On or off are switched alternately 15 TSRV ON/OFF The tracking servo is turned on or off On or off are switched alternately

16 CLV ON/OFF

17 SSRV ON/OFF

18 ALL SRV ON All servos are turned on 19 ALL SRV OFF All servos are turned off Stop command in the test mode

The spindle SLV servo is turned on or off Focus and tracking servos must be already turned on

The sled servo is turned on or off Focus, tracking and spindle servos must be already turned on

On or off are switched alternately

FOCUS command (2X): Focus related. (All servos must be already turned on (except command 21))

No. Name Description Remarks

21 FSRCH ON/OFF

22 F-BIAS UP Increase focus bias Focus bias value 23 F-BIAS DOWN Decrease focus bias Focus bias value

24 ADJ FCSBIAS

25 FGAIN UP/DW The focus servo gain is switched between normal and down Normal or down are switched alternately 27 FOCUS AGC The focus servo gain is adjusted automatically

The continuous vertical motion of the optical pick-up lens is turned on or Avoid a long-time use off On or off are switched alternately

The focus bias is adjusted automatically Both + and - directions are searched to search for best jitter point

OFFSET (PI, FE, TE) command (3X): Adjusts the offset of PI, FE and TE signals.

No. Name Description Remarks

31 PI/FE OFSET

Adjusts the offset of PI, FE and TE signals TE offset adjustment is executed for the CD This adjustment must be executed after 61 DISC DETECT only

11

SCD-XE680

TRACKING command (4X): Tracking servo related.

No. Name Description Remarks

41 TGAIN NM/UP The tracking servo gain is switched between normal and up Normal or up are switched alternately 44 ADJ TRK DSP The traverse AGC and E-F balance adjustment is performed 45 TRACKING AGC The tracking servo gain is adjusted automatically

SEARCH command (5X): Track search related. (Nos. 51 through 53 are not used for the servicing.)

No. Name Description Remarks

51 1-TRCK JUMP One-track jump is performed 52 FINE SEARCH Fine search is performed 53 M-TRCK MOVE M-track movement is performed

DISC DETECT command (6X): Disc type check related.

No. Name Description Remarks

Disc type check is executed Display after judgment

61 DISC DETECT

62 CD SETTING Enter disc type CD setting CD forced setting 63 SL SETTING Enter disc type SL setting SL forced setting 64 DL SETTING Enter disc type DL setting DL forced setting 6F Download Not used for the servicing

DSKMOD CD: Judged as CD Refer to how to apply servo by manual DSKMOD SL: Judged as SACD (SL) operation (See page 13) DSKMOD DL: Judged as SACD (DL) DSKMOD HYB: Judged as HYBRID

LASER command (7X): Laser of optical pick-up related.

No. Name Description Remarks

7A ADDTIME CD

7B ADDTIME HD

7C FJUMP TEST Not used for the servicing

Cumulative light emission time of the laser for CD is displayed (Initialized by 8D command)

Cumulative light emission time of the laser for SACD is displayed (Initialized by 8D command)

TOOLS command (8X): Performs aging, reads adjusting parameters, etc.

No. Name Description Remarks

81 VERSION Firmware version is displayed Example: Ver 1.00 83 TRAY AGING Tray open-close aging is performed Not used for the servicing 87 DISP ADJ DT Automatic adjusting parameters are displayed via RS-232C Not used for the servicing 8A FL CHECK Display of fluorescent indicator tube and keys are checked

8D SETUP MODE

Set to factory shipping mode Set when repair completed PLAY MODE, etc. are initialized Refer to 4-5. SHIPPING MODE (See page 16)

QA command (9X)

No. Name Description Remarks

91 FJUMP CHECK The focus jump is checked Not used for the servicing 92 SET CHECK The set is checked Refer to 4-3. SET CHECK (See page 14) 93 WATER MARK Not used for the servicing

94 SET AGING

95 FJMP CHK BU The focus jump is checked (for jig) Not used for the servicing 9C BU DENCHO

9D PLAY&RFD ON

9E RFD ON/OFF

The set aging is performed Repeat by the specified number of times or until an error occurred

The S curve waveform, traverse waveform, and RF waveform can be Refer to 4-6.WAVEFORMS CHECK checked successively (See page 16)

SACD playback, RFD output SACD jitter measuring mode

RFD output is turned on or off SACD jitter measuring mode

Not used for the servicing

IC command (AX)

No. Name Description Remarks

A0 IC SELF CHK Each IC and its communication are checked Normal or up are switched alternately

12

SCD-XE680

How to Apply Servo by Manual Operation

In analyzing failures of the set, the servo may be applied by manual operation. To apply servo in the test mode, use the following method.

1. After setting the test mode, rotate the [ AMS ] dial to select a command, and press the [ AMS ] dial to enter .

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2. “61 DISC DETECT” (Disc type check) t“18 ALL SRV ON” (All servos on + auto adjustment)

3. If applying servo while checking the condition one by one, “61 DISC DETECT” (Disc type check) t“31 PI/FE OFSET” (Offset automatic adjustment)t“14 FSRV ON/OFF” (Focus servo on)t“16 CLV ON/OFF” (CLV servo on) t“44 ADJ TRK DSP ” (E-F balance adjustment) t“15 TSR V ON/OFF” (Tracking servo on)t“17 SSRV ON/OFF” (Sled servo on)t“24 ADJ FCSBIAS” (Focus bias adjustment) t“27 FOCUS AGC” (Focus auto gain adjustment) t “45 TRACKING AGC” (Tracking auto gain adjustment).

Note: 1. On and off are alternately switched in the same command.

2. For a stop, select “19 ALL SRV OFF” and press the [ AMS ] dial.

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4-1. IC INTERFACE CHECK

The communication between microcomputer and main ICs is checked.

Checking Method:

1. After setting the test mode, rotate the [ AMS ] dial to select “A0. IC SELF CHECK” and press the [ AMS ]

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dial to enter.

2. A checking will start automatically. (Checking time is about 3 seconds)

3. At successful completion of check, “IC CHECK OK” is displayed. In this case, no error exists in the IC interface.

Note: The check mentioned above tests the communication from micro-

computer to main ICs. Even if the check successfully finished, the IC to be checked is not always normal. Consider it for reference only.

4. In case of an IC communication error, the following display will be given during the checking. Possible causes of error are as listed below.

Error display Causes (typical example)

DVD DEC. ERROR 1. IC701 (SACD decoder) is faulty

DVD DRAM ERR 1. IC706 (D-RAM) is faulty

CD DSP ERROR 1. IC509 (CD DSP) is faulty

2. IC701 pin <znv (XRST) does not go “H”

• IC901 pin ts (XDIS IO) does not go “H”

• IC904 (PLD) is faulty

3. 768fs (33.8688 MHz) is not present to IC701 pin <znm (XTAL)

• IC811 (3-multiplying circuit) is faulty

• Clock signal 256fs is not sent from

AUDIO board (CN701 pin qg)

• CN702 pin 6 (GND) and pin 7

(+3.3V-D) are open or shorted

• CN701, 702 and FFC connection is loose,

or FFC is disconnected

2. IC701 pin <znv (XRST) does not go “H”

• IC901 pin ts (XDIS IO) does not go “H”

• IC904 (PLD) is faulty

3. Faulty communication line between IC701 and IC706

•Data line, address line, WE, etc.

4. D903 (1SS367) is faulty D+3.3V is not present to IC706

2. 768fs (33.8688 MHz) is not present to IC509 pin ua (XTAL) Same as cause 3 of DVD DEC. ERROR

3. IC509 pin 2 (XRST) does not go “H”

• IC901 pin ts (XDIS IO) does not go “H”

• IC904 (PLD) is faulty

Error display Causes (typical example)

EEPROM ERROR 1. IC903 (EEPROM) is faulty SAMBA DRAM ERR 1. IC808 (D-RAM) is faulty

(DSD decoder is also 2. IC801 (DSD decoder) is faulty checked) 3. 768fs (33.8688 MHz) is not present to

RF AMP ERROR 1. IC001 (RF AMP) is faulty

SD BUS ERROR 1. IC701 SD bus and IC801 AV decoder

IC801 pin qa (MCKI) Same as cause 3 of DVD DEC. ERROR

4. IC801 pin 9 (XRST) does not go “H”

• IC901 pin ts (XDIS IO) does not go “H”

• IC904 (PLD) is faulty

5. Faulty communication line between IC801 and IC808

•Data line, address line, WE, etc.

6. D904 (1SS367) is faulty D+3.3V is not present to IC808

2. Loose connection between CN708 on MAIN board and CN005 on RF board, or FFC disconnection CN708 pin qj (CLK RF), pin qh (DATA RF) and pin qg (SDEN) must be checked

interface is faulty

2. IC812 to 814 are faulty

Causes Common to Each IC:

1. Faulty communication line between microcomputer and each IC. Disconnected patterns, floating series resistors, bridge, etc.

2. Faulty IC supply voltage. Particularly, check D+3.3V voltage.

3. Faulty microcomputer communication port to each IC

Note: In case of more than two errors, the error display is switched over

one after another, thus making the reading difficult. In such a case, press again the [ AMS ] dial to make a recheck for error reading.

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4-2. DISPLAY CHECK

Checking Method:

1. After setting the test mode, rotate the [ AMS ] dial to select “8A. FL CHECK” and press the [ AMS ] dial to

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enter.

2. Respective segments of fluorescent indicator tube will automatically light up in order, and therefore check that there is no chipped character.

3. The “INPUT REMOCON” will be displayed after the segment check finished successfully, and then press a proper key on the remote commander.

4. After “JOG CHECK” is displayed, the numbers of calendar will be displayed from 1 to 15 each time the [ AMS ]

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dial is rotated clockwise.

5. After display up to 15, the numbers of calendar will disappear in order each time the [ AMS ] dial is

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rotated counterclockwise.

6. “TTX-1514?” will be displayed when all are cleared, and then rotate the [ AMS ] dial to select tke TTX-1515 press the [ AMS ] dial.

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7. Upon display of “KEY CHECK”, if a key on the display is pressed, the corresponding segment of fluorescent indicator tube will light up.

8. “FL TEST END” will be displayed if all keys are pressed.

Note: The keys include the [ AMS ] dial. If the segment that

corresponds to the pressed key does not light up, that key is faulty.

9. The test mode selection display will be back, if the [ AMS ]

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dial is pressed.

13

SCD-XE680

4-3. SET CHECK (AUTOMATIC VARIOUS MEASUREMENTS)

The operational stability of the set is checked. The check and OK/NG judgment are performed automatically.

Note: In the set check using the CD, besides a checking, the MIRR time used for the disc check is measured every optical pick-up, and from the measured

result, the threshold value is calculated and it is stored in the EEPROM (IC903) on the MAIN board. Accordingly, if a combination of optical pickup and EEPROM is changed (for example, the optical pick-up or MAIN board is replaced), be sure to perform the set check using the following CD. As the data stored in the EEPROM are overwritten every set check, retry if failed. For the set check using the SACD, only checking is made.

Set Check

92. SET CHECK AUTO CHECK SP?

The set check is executed to judge OK or NG. (For the CD, the threshold value is stored in the EEPROM)

AUTO CHECK?

DISP RESULT S?

DISP RESULT F?

CHECH END?

The set check of measurement only is executed.

The measured result is displayed via RS-232C.

The measured result is displayed on the fluorescent indicator tube.

The set check is finished.

CD and SACD (SL) Disc Operation Check

Checking method:

1. After setting the test mode, rotate the [ AMS ] dial to select “SET CHECK” and press the [ AMS ] dial to enter.

2. Upon display of “AUTO CHECK SP?”, further press the [ AMS ] dial.

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3. The tray will open automatically, and then set the test disc*1 of CD or SACD.

4. With the “DISC IN&JOG ON” displayed, press the [ AMS ] dial, and the check will be executed automatically.

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5. “SPEC OK!” will be displayed if the measured result is within the specification. Faulty item name and the measured result wil l be displayed if any measured item is NG.

6. After that, “A UT O CHECK SP?” will be ag ain displayed, and then rotate the [ AMS ] dial to select “CHECK END?”. Further , press the [ AMS ] dial, and the test mode selection display will be back, and then press the [OPEN/CLOSE ] button and take

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A

the test disc out.

*1 Use PATD-012 or YEDS-18 for CD, and SATD-S5 or SATD-S4 for SACD (SL). Using another disc will result in a checking failure.

Measured Items:

Items Description Remarks

RF/VC/FE/TE (ORG) RF (8 bit data in hex notation) RF: A0h

RF/VC/FE/TE (ADJ)

PI/TRVS PP (ORG/ADJ) TRVS PP (ORG):Traverse level before level correction (AGC) Traverse level conversion

PIOR/CCR/TRCR CCR: Set value of FE offset coarse adjusting register

FOCUS/TRK GAIN

FBIAS/TRVSC/TRCR2/CFR

PSP AMPLITUDE SACD only 1-LAST TRK SEEK (msec) Average seek time from first track to last track of disc

ERROR RATE For CD: Average value/Maximum value of C1 and C2

Offset values before RF (PI), VC, FE, TE signal offset adjustment At offset 0

VC, FE, TE (9 bit data in hex notation) VC, FE, TE: 00h Offset values after RF (PI), VC, FE, TE signal offset adjustment VC offset is not adjusted

(Less than ORG value if offset correction is normal) (Measurement only) RF (8 bit data in hex notation) Also, for SACD, the TE offset is VC, FE, TE (9 bit data in hex notation) not measured and adjusted

PI (ORG): PI value at disc type check (decimal data) PI level conversion PI (ADJ): PI value after PI offset adjustment Read value × 12.9mV

TRVS PP (ADJ):Traverse level after level correction (AGC)

PIOR: Set value of PI offset coarse adjusting register Registers in RF amplifier

TRCR: Set value of TE offset coarse adjusting register Auto gain adjusted values of focus and tracking servos

(8 bit data in hex notation) FBIAS: Focus bias set value (9 bit data in hex notation)

TRVSC: Traverse center value (9 bit data in hex notation) TRCR2: Set value of E-F balance coarse adjusting register CFR: Set value of traverse level adjusting register

Error rate measurement

For SACD: Average value/Maximum value of PO, PI1 and PI2

(read value at microcomputer A/D) (decimal data)

(decimal data) Read value × 12.9mV

(decimal data) 12.9mV=3.3V ÷ 256 (8 bit)

TRCR2 adjusts the E-F gain balance and used for CD only (Fixed to 06 for SACD) TRCR2 and CFR are registers in RF amplifier

For the CD, Measure for 7 sec at track No.5 For the SACD, calculation from 100block data at track No.5

14

SCD-XE680

Specified V alue:

Specified value used for OK/NG judgment when executing 92. SET CHECKtAUTO CHECK SP?

Measured Items Specified value

RF AVRG (ADJ) 8Ch to ABh VC AVRG (ADJ) 1F7h to09h

FE AVRG (ADJ)

TE AVRG (ADJ) 1E2h to 1Eh TRVS PP (ADJ) 45h to 73h FCS GAIN 10h to 60h TRK GAIN 10h to 60h

ERROR RATE C2 0

PSP AMPLITUDE (SACD only) 1000 to 4000 1-LAST TRK SEK 3500 or less

Note: The specified values attached with “h” are hexadecimal numbers, and others are decimal numbers.

RF, VC, FE, and TE measured values are hexadecimal data with positive and negative signs. When comparing the measured value with the specified value, refer to the following.

(1) CD 1EEh to 12h (2) SACD 1F1h to 0Fh

(1) CD

(2) SACD

C1 20 or less

PI1 NUM 100 or less PI1 FRAME 5 or less

Hexadecimal (hex) display 9 bit data

FF 011111111 (+255) FE 011111110 (+254)

01 000000001 (+1) 00 000000000 (0) 1FF 111111111 (-1)

101 100000001 (-255) 100 100000000 (-256)

MAX

(+) Side

0

(-) Side

MIN

Hexadecimal (hex) display 8 bit data

7F 01111111 (+127) 7E 01111110 (+126)

02 00000010 (+2) 01 00000001 (+1) 00 00000000 (0) FF 11111111 (-1) FE 11111110 (-2)

81 10000001 (-127) 80 10000000 (-128)

15

SCD-XE680

e

4-4. SACD (DL) DISC OPERATION CHECK

(• Perform as necessary) This checking performs the focus jump using a DL disc, which is a dual-layer HD disc, to verify the stability of the set. A set of layer 0 most-outside track access (only once)tone-second tracetfocus jump (layer 0t1)tone-second tracetfocus jump (layer 1t0) are repeated 5 times.

Checking Method:

1. After setting the test mode, rotate the [ AMS ] dial to select “91 FJUMP CHECK” and press the [ AMS ] dial

lL

to enter.

2. The tray will open automatically, and then set the DL disc.

3. With “DISC IN&JOG ON” displayed, press the [ AMS ]

lL

dial.

4. The tray will be loaded in automatically, and then the test will start.

5. During the test, “NOW TEST iiii” is displayed.

6. Upon successful completion of the check, “OK!” will be displayed and the tray will open automatically. (In case of NG, “NG! ERR FJ-UP” or “NG! ERR FJ-DWN” is displayed)

7. Take the DL disc out and press the [OPEN/CLOSE ] button,

A

and the test mode selection display will be back

4-5. SHIPPING MODE

The repaired set must be initialized, and for this purpose the set should be set to the shipping mode.

Setting Method:

1. After setting the test mode, rotate the [ AMS ] dial to select “8D SETUP MODE” and press the [ AMS ] dial

lL

to enter.

2. “INITIAL OK” is displayed and the test mode selection display will be back immediately.

“8D 000000000 00” will be displayed, and if the scroll starts in

the left direction, the set initialization has completed

3. Press the

[POWER] button to turn the power off.

The following setups are established in the shipping mode

1. Initialization of EEPROM (IC903)

• PLAY MODE CONTINUE

• LAYER SELECT SACD

• M/2CH SELECT MULTI

• 2ch SPK MODE 2ch DIRECT

• Mch SPK MODE Mch DIRECT

• Resetting the cumulative light emission time of the laser

Note: Even if the shipment mode setting mentioned above is made, the

disc check threshold value attained in the 3. SET CHECK is not cleared.

2. The optical pick-up moves to the home position (most-inside

track)

Error List

Display Description

Toc Error * Error during the time from auto adjustment to TOC

Toc Error **** Illegal SACD (Such as a pirated version)

reading, Different type of disc (Such as a DVD disc), Disc is dirty

4-6. WAVEFORMS CHECK BU Electrical Adjustment Mode

The BU electrical adjustment mode is used to check the S curve waveform, traverse waveform, RF wa veform, and CLV jitter. After a disc is placed on the tray, each time the [ AMS ] dial is

lL

pressed, the check mode is switched in order for S curve waveformt traverse waveformtRF waveformtCLV jitter (for the CD).

S Curve Check

Connection:

oscilloscop

MAIN board

TP506 (FE)

TP504 (AVC)

+ –

Checking Method:

1. After setting the test mode, rotate the [ AMS ] dial to

l

select “9C. BU DENCHO” and press the [OPEN/CLOSE ]

L

A

button. Place the test disc (PATD-012 or YEDS-18 or SATDS5 or SATD-S4) on the tray and close the tray, then press

lL

the [ AMS ] dial.

2. At the completion of disc type check, “CD DETECT” will be displayed (for PATD-012 or YEDS-18).

Note: For the SATD-S5 or SATD-S4, “SL DETECT” is displayed.

3. Press again the [ AMS ] dial, and the S curve waveform

lL

check mode will become active and “S-CURVE MODE” will be displayed.

4. Connect an oscilloscope to the TP506 (FE) and TP504 (AVC) on the MAIN board.

5. Check that the level A and B of wa veform on the oscilloscope satisfy the specification.

Specified Value:

Disc AB

SATD-S5 or SATD-S4 PATD-012 or YEDS-18

S curve waveform

VC

Note: For easier observation of this waveform, extend the sweep time

and raise the brightness.

0.7 to 1.7 Vp-p –0.1 to +0.1V

A

B

Checking and Connecting Location : See page 17.

16

SCD-XE680

A

CLV jitter waveform

e

V

Traverse Check

Connection:

oscilloscope

MAIN board

TP513 (TE)

TP504 (AVC)

+ –

Checking Method:

1. Under the condition of S curve waveform check mode in step 5, press the [ AMS ] dial.

lL

2. After “WAIT” is displayed, the traverse wa veform check mode will become active and “TRV MODE ON” will be displayed.

3. Connect an oscilloscope to the TP513 (TE) and TP504 (AVC) on the MAIN board.

4. Check that the level A and B of waveform on the oscillo- scope satisfy the specification.

Specified V alue:

Disc AB

SATD-S5 or SATD-S4 PATD-012 or YEDS-18

Traverse waveform

VC

0.9 to 1.4 Vp-p –0.1 to +0.1V

Center fo the waveform

A

B

Checking and Connecting Location : See page 17.

RF Level Check

Connection:

oscilloscope

MAIN board

TP703 (RFAC)

TP704 (AGND)

+ –

Checking Method:

1. Under the condition of traverse waveform check mode in step 4, press the [ AMS ] dial.

lL

2. Connect an oscilloscope to the TP703 (RFAC) and TP704 (AGND) on the MAIN board.

3. After “WAIT” is displayed , the RF waveform check mode will become active and “PLAY 5th TRACK” (for the SACD, “RF MODE ON”) will be displayed, and the 5th music on the disc will be played.

4. Check that the RF waveform is clear and the level satisfies the specification.

5. Press the [ AMS ] dial (for the SACD, “RF JITTER

lL

(5th)” will be displayed, and further press the AMS dial), and “OUTSIDE TRACK” will be displayed and the outward track of the disc will be played.

6. Check that the RF waveform is clear and the level satisfies the specification.

7. Press the [ AMS ] dial, and “INSIDE TRACK” will be

lL

displayed and the inward track of the disc will be played.

8. Check that the RF waveform is clear and the level satisfies the specification.

9. After checking, press the [ AMS ] dial, and the test is

lL

over when “BU MEASURE” is displayed.

10. Press the [OPEN/CLOSE ] button to open the tray, and re-

A

move the test disc.

11. Using each type of disc, repeat from step 1 of S curve waveform check up to step 10 of RF level check.

12. When the check is over, press the

[POWER] button to turn the

power off.

Note: Take car e not to leave the test disc in the set.

Specified Value:

Disc A

SATD-S5 or SATD-S4 PATD-012 or YEDS-18

0.9 to 1.4 Vp-p

CLV Jitter Check (CD only)

Connection:

oscilloscop

MAIN board

TP516 (RFCK) TP517(WFCK)

TP808 (DG)

(CH1)

(CH2)

+

+ –

Checking Method:

Under the condition of RF level check mode in step 3, connect the oscilloscope to the TP516 (RFCK) (CH1), TP517 (WFCK) (CH2), and the TP808 (DG) (GND) on the MAIN board to check that the value A of the waveform satisfies the specification.

Note: Take care not to leave the test disc in the set.

Specified Value:

Disc A

PATD-012 or YEDS-18

35 µsec or less

Checking and Connecting Location:

– MAIN Board (Component Side) –

TP506

(FE)

TP513

(TE)

TP504

(AVC)

IC509

TP704

(AGND)

TP514

(RFCK)

TP517

(WFCK)

TP703

(RFAC)

IC701

IC703

TP808 (DG)

IC801

RF signal waveform

VOLT/DIV: 200 m TIME/DIV: 500 ns

A

Note: Clear RF waveform refers to the waveform where ◊ shapes should

be distinctively observed in the center.

Checking and Connecting Location : See page 19.

1717

SCD-XE680

SECTION 5 DIAGRAMS

5-1. BLOCK DIAGRAM – RF/SERVO Section –

DETECTOR

OPTICAL PICK-UP

BLOCK

(KHM-234AMA)

MODULE

CIRCUIT

2AXIS DEVICE FOCUS/

TRACKING

(Page 19)

COIL

1

DVD LD

CD LD

DVD/CD PD

DVD VR

CD VR

FCS+ FCS–

TRK+ TRK–

SP ERR

RF

A B C D

E

F

G

H

CONTROL SWITCH

VC

(+2.5V)

PHOTO DIODE

(FOR SACD)

Q005

PHOTO DIODE

(FOR CD)

Q004

M2

(SLED)

M3

(SPINDLE)

M151

(LOADING)

SUMMING AMP

IC004 (1/4)

SUMMING AMP

IC004 (2/4)

AUTOMATIC POWER

CONTROL (FOR SACD)

Q001

AUTOMATIC POWER

CONTROL (FOR CD)

Q003

DVDPDSW

FOCUS/TRACKING COIL DRIVE,

12 5 11 6

14 2 13 3

M

17 24 18 23

25

MM

CBA

D

A

B

C

D

A B C D

CDPDSW

SLED MOTOR DRIVE

IC502

FOCUS COIL

DRIVE

TRACKING COIL

DRIVE

SLED MOTOR

DRIVE

SPINDLE MOTOR

DRIVE

1

63

3 4 5 6

18

17

12

11

10

9

16 15 14 13

21

22

23 24

STBY1

STBY2

DVDRFP

RFSIN

A2 B2 C2 D2

CD E

CD F

A

B

C

D

CD A CD B CD C CD D

DVDLD

CDLD

DVDPD

CDPD

MUX ATT

GCA,

EQ

GCA

MUX

DUAL

APC

9

20

27 26

A

C

B

D

IC512

DRIVE

AIP

59

AIN

60

PHASE

DETECTOR

+ +

1 241 2

ATON

61

ATOP

62

COMPARATOR MUX

VC

+ –

GCA

L. P. F.

TRACKING COIL DRIVE

CONTROL SWITCH

IC501

SPINDLE/LOADING MOTOR DRIVE

8

SPINDLE MOTOR

9

6

LOADING MOTOR

5

INPUT

BIAS,

AGC

+ –

SACD/CD RF AMP,

FOCUS/TRACKING ERROR AMP

15

16 17

24

23

CLAMP&

ENVELOPE

LEVEL DAC

GCA

IC001

4

BUFFER

PROGRAMMABLE

DIFFERENTIATOR

MUTE2

MUTE1

EQ FILTER

AGCO

+ –

L. P. F.

+ –

+ +

TRACKING COIL DRIVE

SEL

SUB GCA

L. P. F.

CONTROL SWITCH

IC505

MUTE 2D

SP ON

13

MUTE LOAD

2

LOAD OUT

21

LOAD IN

22

FNP

FNN

AGCO

535254

OFFSET

CANCEL

OFFSET

CANCEL

OFFSET

CANCEL

BOTTOM

ENVELOPE

F JMP1

F JMP2

SPDA

DIP

DIN

55

FULL WAVE

RECTIFER

CHARGE PUMP

FFDR

33

FRDR

34

TFDR

31

TRDR

32

SFDR

29

SRDR

30

AGC

SERIAL

PORT

REGISTER

GCA

MUX

INPUT

BUFFER

PEAK/

BOTTOM

HOLD

DIGITAL SERVO

PROCESSOR

IC509 (1/2)

FOCUS/TRACKING/SLED

RFAC

57

TE TE

39

SDATA

SCLK SDEN

FE

PI

MEVO

MIN

MIRR

LDON

PWM GENERATOR

SDATA

47 46 48 42MNTR

40

PI ERROR AMP

38

32

31

27

26

TE

40 41 39 43

TE

SE

A/D

CONVERTER

FOCUS

TRACKING/SLED

SERVO DSP

D+3.3V

SCLK

SDEN

IC004 (3/4)

PI

FE

RFDC

SSTP

26

PIFETE

DFCT, FOK

DETECTOR

SERVO

INTERFACE

SERVO AUTO

SEQUENCER

TO CPU INTERFACE

S1

(LIMIT)

FOK

MIRR

DFCT

COUT SCLK

RFAC

2

(Page 19)

• SIGNAL PATH

: SACD PLAY

: CD PLAY

TE, FE, PI

SDATA, SCLK, SDEN

FE

PI

22 20 21

19

8

FOK

MIRR

COUT SCLK

AVC

(+1.65V)

WAVRB

DRVC

(+2.5V)

AVC BUFFER

IC004 (4/4)

WAVRB BUFFER

IC503 (1/2)

DRVC BUFFER

IC503 (2/2)

MUTE 2D, SP ON, MUTE LOAD

A+3.3V

D+5V

LDON

DVDPDSW, CDPDSW

TRKSW

FOK, MIRR,

COUT, SCLK

LIM SW

SPDA, F JMP1/2

SPIN

LOAD IN/OUT

10

11

12

13

3

4

5

6

7

8

9

(Page 20)

(Page 19)

(Page 20)

(Page 19)

(Page 20)

1818

5-2. BLOCK DIAGRAM – SERVO Section –

SCD-XE680

2

(Page 18)

11

(Page 18)

5

(Page 18)

1

(Page 18)

10

(Page 18)

14

(Page 20)

15

(Page 20)

16

(Page 20)

RFAC

SPIN

LDON

SP ERR

SPDA, F JMP1/2

D0 – D7

A0

XHRD, XHWR

DVC

(+1.65V)

CPU

IC901 (1/3)

LD ON

100

ADDRESS BUS

DVC BUFFER

IC703 (2/2)

DIGITAL SIGNAL

PROCESSOR

RFAC

50

ASYI

49

ASYO

48

SP ERR

59

DATA BUS

IC509 (2/2)

ASYMMETRY

CORRECTOR

FCS JMP1

FCS JMP2

7 8

F JMP1

F JMP2

A+3.3V

FILTER

53 55 52 54 12

FILI

PCO

FILO

CLTV

XPCK

DIGITAL PLL

TO SERVO AUTO

SEQUENCER

DIGITAL CLV PROCESSOR

LOCK

MDP

24

25 4 6 5 7 15 79 80 76 77 10 11 13

75

LOCK CD

SPDA

APDO

43 44 64 58 85 84 12 22 23

SPDA

CPU INTERFACE

DATA

SENS

XLAT

CLOK

34 35 36 9 26 33 37 71

XLAT CD

DATA CD

CLOK CD

JITTER

GFS DVD

INTEGRATOR

IC703 (1/2)

DEMODULATOR

PROCESSOR

SBSO

SCOR

SENS CD

SCOR CD

XRD

XWR

XHRD

XHWR

XCS

EFM

SUBCODE

SQSO

EXCK

SQSO CD

XCS DVD

INIT0 DVD

XINT0

XINT1

SQCK

WFCK

RFCK

SQCK CD

A0 – A7 D0 – D7

INIT1 DVD

89 – 96 14 – 21

INTERNAL BUS

EMPH

GFS

68

GFS CD

C4M

32K

RAM

ERROR

CORRECTOR

117

DATA BUS

ADDRESS BUS

RFIN

D+3.3V

6916

XTSL

CLOCK

GENERATOR

D/A

DIGITAL

INTERFACE

MUTE

3

ASSYMMETRY

DASYO

ASF1

111

113 114 115

FILTER

RF

ASF2

XHRD XHWR XCS

XINT0

XINT1

DIGITAL

OUT

MD2

63

3

DASYI

XTAO

XTAI

PCMD

BCK LRCK C2PO

WDCK

DOUT

XRST

DOCTRL

PLL

D0 – D7

A0 – A7

5, 7, 9 – 14 172 – 176, 1, 2, 4

XRD

17

XWR

18

XCS

19

XINT0

20

XINT1

21

XWAIT

16

107

GFS

109

APEO

72 71

66 67 65 14 17

64

XRST CD

2

MUTE CD

IC708 (1/2)

FFM

DEMODULATOR

CPU

INTERFACE,

DMA

CONTROLLER

AUTHENTICATION

XTL2

XTAL

169167

SPINDLE MOTOR DRIVE

IC708 (2/2)

138

ANALOG

MIXER

BUFFER

XTL1

170

142 144 140

135

66 – 69, 71,

2 – 5, 7 – 10

MDIN1

MDSOUT MDPOUT

CLVS

SPO

MDB0 – MDB7

73 – 75

MDIN2

SPINDLE

CONRTOL

MAIN DATA ECC & EDC

DVD-ROM CD-ROM

MDB8, MDB9,

MDBA – MDBF

96, 97, 99, 101,

102, 104 – 106

41 – 44, 46 – 49

D-RAM

IC706

WFCK

SCOR

SBSO

EXCK

147148150151137 153 146 155 163 158 160 164

WFCK

SCOR

SBIN

EXCK

XRCI

GSCOR

C2PO

LRCK

CD DSP INTERFACE

SYNC

CONTROL

DESCRAMBLE

DMA CONTROLLER

(PRIORITY RESOLVE & SEQUENCER)

MA0 – MA9

79, 80, 82 – 87,

89, 91

21 – 24, 27 – 32

A0 – A9I/O8 – I/O15I/O0 – I/O7

BCLK

MDAT

SUBCODE

DEINTERLEAVE & ECC

XRAS

XMWR

MA10/MNT1

XMOE

XCAS

3334

171835

OE

WE

RAS

LCAS

UCAS

MDAT

BCLK LRCK

XRST DVD

XRST

INTERFACE

MA11/MNT2

SACD DECODER

CD ESP

DAC

DBCK

DLRC

DDAT

162

157159939294767895

IC701

PACKET FIFO

DMA FIFO

ATAPI

REGISTER

ATAPI

• SIGNAL PATH

RFAC

768FS (33.8688MHz)

MDAT, BCLK, LRCK

OPTICAL

TRANSCEIVER

IC309

XRST CD, MUTE CD, XRST DVD

HDB0 – HDB7

HDB8

HDB9

HDBA – HDBF

HA0 – HA2

HOST INTERFACE

XSAK REDY

HCS0 HCS1 XSHD XDCK XSRQ XHRS

HINT

DIGITAL (CD)

OUT OPTICAL

SD0 – SD7

32, 30, 27, 24

44, 41, 39, 35,

26 29

40, 43, 45

31, 34, 37,

59, 56, 60

XSAK

46 51 54 62 63

XSHD

49

XDCK

48

XSRQ

53 23

: SACD PLAY

: CD PLAY (ANALOG)

: CD PLAY (DIGITAL OUT)

SDEF

XSAK, XSHD, XDCK, XSRQ

WPK

XTAL

17

(Page 20)

18

(Page 20)

19

(Page 21)

20

(Page 20)

21

(Page 20)

22

(Page 20)

23

(Page 20)

24

(Page 20)

25

(Page 20)

1919

SCD-XE680

5-3. BLOCK DIAGRAM – MAIN Section –

(Page 18)

(Page 19)

4

8

3

17

24

22

23

21

SDATA, SCLK, SDEN

FOK, MIRR, COUT, SCLK

TE, FE, PI

REAC

WPK

SDEF

XASK, XSHD, XDCK, XSRQ

SD0 – SD7

XSAK

XSHD

XDCK

XSRQ

LEVEL SHIFT

IC813

A1

2 18

A2

3 17

A3

4

A4

5 15

LEVEL SHIFT

IC814

LEVEL SHIFT

A1 – A8

2 – 9

IC812

D-RAM

IC808

B1

B2

B3

B4

B1 – B8

DQ0 – DQ7

16

11 – 18

2, 3, 5, 6,

8, 9, 11, 12

126 WARFI

123

WCK

168

SDEF

167

XSAK

165

XSHD

SDCK

166

164

XSRQ

169 – 176

SD0 – SD7

134 – 131

139 – 136,

DSD DECODER

IC801

MSDATO

MSDATI

XMSLAT

SMUTE

MSREADY

DQ0 – DQ7A0 – A11

64

DSAL

66DSAR 74

DSALS

76DSARS 69DSAC 71DSASW

61PHREFI 59BCKAI

MCKI

11 12

6 4

MSCK

3 2

10

7

3-MULTIPLYING

IC811

13 1

11

10 4

9 5

8

SDATAL SDATAR

SDATALS

SDATARS

SDATAC

SDATALF

2 3

6

64FS

128FS

• SIGNAL PATH

: SACD PLAY

256FS

SDATAL, SDATAR, SDATALS, SDATARS,

SDEN

SDATA SCLK

FOK MIRR COUT SCLK

TE FE

X901

20MHz

83

DATA RF

77

CLK RF

74

FOK CD

25

MIRR RF

29

COUT CD

72

SCLK CD

65

TE FE

67 66PIPI

40 XTAL

41 EXTAL

SIN DSD

48

SOUT DSD

49

SCK DSD

50

XLAT DSD

47

MUTE DSD

51

RDY DSD

27

LATCH DF

98 97

INIT DF

CPU

IC901 (2/3)

LOAD IN

LOAD OUT

IN SW

OUT SW

EEPSIO

EEPSCL

XRST

XCS IO

XDIS IO

45 46

30

31

78 79

38

11

52

LOAD IN

LOAD OUT

S152

(LOADING IN)

S151

(LOADING OUT)

SDA

5 6

SCL

EEPROM

IC903

RESET SIGNAL

GENERATOR

IC905

64FS

FS64

3

128FS

4

35

SDEN

9

XCS

RST

24

FS128

XRD

XWR

ZEROL ZEROR

LMUTE RMUTE

5YO

D0 – D7

12 – 16, 19 – 21

22A

10 11

2

41

38 37

34MULTI

XHRD

XHWR

ZEROL

ZEROR

LMUTE RMUTE

SDATAC, SDATALF, 64FS

DATA BUS

LOAD IN/OUT

D0 – D7

A0

XHRD, XHWR

ZEROL, ZEROR

LMUTE, RMUTE

MULTI

26

27

13

14

15

16

28

29

30

(Page 21)

(Page 18)

(Page 19)

(Page 21)

(Page 19)

(Page 18)

(Page 19)

XTAL

25

768FS (33.8688MHz)

18

MUTE 2D, SP ON, MUTE LOAD

12

XRST CD, MUTE CD, XRST DVD

20

20, 19

A0 – A11

21 – 24, 27 – 32,

16

CAS RAS

17

WE

15

CKE

34 35CLK DCLK

152, 151, 149, 148

162 – 159, 157 – 154,

XCAS

144

XRAS

145

XWE

143

DCKE

142 141

ZDFL

ZDFR

TEST1

XRST

26

MUT 2D6SP ON1MUT LOAD

4

DATA

CLK

LATCH

INIT

63 65

115

9

SP ON

MUTE 2D

MUTE LOAD

MUTE CD

73

MUTE CD

XRST DVD XRST CD

42 ZDFL 43 ZDFR

36 ISBTEST

RST DSD

25

RST DVD

31

RST CD

32

RST DP

PROGRAMMABLE

LOGIC DEVICE

IC904

DVDPDSW

CDPDSW

DVDPDSW

33 23

44LIM SW

CDPDSW

1TRKSW

XRST DP

DATA, CLK,

LATCH, INIT

DVDPDSW, CDPDSW

TRKSW

LIMSW

31

32

6

7

9

(Page 22)

(Page 21)

(Page 18)

2020

5-4. BLOCK DIAGRAM – AUDIO Section –

HEADPHONE

AMP

IC308 (1/2)

RV681

PHONE LEVEL

SCD-XE680

R-CH

J681

PHONES

27

(Page 20)

19

(Page 19)

28

(Page 20)

26

(Page 20)

SDATAL, SDATR, SDATALS, SDATARS, SDATAC, SDATALF, 64FS

MDAT, LRCK, BCLK

ZEROL, ZEROR

256FS

SDATAL

SDATAR

SDATALS SDATARS

SDATAC SDATALF

64FS

MDAT LRCK BCLK

DSD1

38

DSD3

40

DSD2

39

DSD4

41

DSD5

42

DSD6

43

DSD7

44

DSD8

45

DBCK

37

PDATA1

46

PDATA2

47

PLRCK

51

PBCK

50

LOW-PASS FILTER

CLOCK BUFFER

IC304

65 3

12

DSD

INTERFACE

PCM

INTERFACE

DIGITAL FILTER,

D/A CONVERTER,

IC301

4

DSD

FILTER

PCM

FILTER

ZERO

DETECT

ZERO17ZERO2

6

ZEROL

ZEROR

ENHANCED MULTI LEVEL DELTA-SIGMA

MODULATOR

SYSTEM

CLOCK

PSCK34DSCK

33

D/A

CONVERTER

FUNCTION

CONTROL

MDIMCMS

2 4 3 36

DATA

CLK

LATCH

OUTPUT

AMP &

LOW-PASS

FILTER

XRST

INIT

VOUT3 VOUT1

VOUT4 VOUT2

VOUT5 VOUT6

VOUT7 VOUT8

MUTING

Q403

10 12

9

11

31 30

29 28

MIX AMP

IC315 (2/2)

R-CH R-CH

R-CH

ANALOG

LOW-PASS

FILTER

IC305 (2/2)

ANALOG

LOW-PASS

FILTER

IC306 (2/2)

MUTING

Q401

MUTING

Q421

R-CH

MUTING

Q402

MUTING

Q422

R-CH

J301

J302

L

R

L

R

L

R

CENTER

ANALOG 2CH OUT

FRONT

SURR

ANALOG

5.1CH OUT

DATA, CLK, LATCH, INIT

32

(Page 20)

LMUTE, RMUTE

29

(Page 20)

MULTI

30

(Page 20)

X301

11.2896MHz

ANALOG

LOW-PASS

FILTER

IC307

MUTING

CONTROL

SWITCH

Q301

LMUTE

R-CH

MUTING

CONTROL

SWITCH

Q304

RMUTE

MUTING

Q441

MUTING

Q541

MUTING

CONTROL

SWITCH

Q303

MUTING

Q442

MUTING

Q542

• R-ch is omitted due to same as L-ch.

• SIGNAL PATH

: SACD PLAY

: CD PLAY (ANALOG)

SUB WOOFER

2121

SCD-XE680

5-5. BLOCK DIAGRAM – DISPLAY/KEY CONTROL/POWER SUPPLY Section –

S810 – 817

60KEY0

CPU

IC901 (3/3)

S801, 802, 806 – 809

S830

61KEY1

62KEY2

REMOTE

82RM

57LED DRV

CONTROL

RECEIVER

IC802

LED

DRIVE

Q701, 702

FLUORESCENT INDICATOR TUBE DRIVER

IC801

ROTARY

ENCODER

D803

(MULTI-CHANNEL)

AMS

PUSH ENTER

+3.3V

Ll

VFL–33V

FLUORESCENT INDICATOR

TUBE DRIVER

(IC801)

F1

+3.3V

REGULATOR

IC302

DAC+5V

A+7V

A+UR

A–7V

A–UR

D901

D302D301

+5V

REGULATOR

IC906

+7V

REGULATOR

IC905

–7V

REGULATOR

IC904

–33V

REGULATOR

Q902

R907

RECT

D953, 954

RECT

D924, 925

RECT

D922, 923

T951

POWER

TRANSFORMER

(Page 20)

31

XRST DP

53FLOUT 54FLCLK

56FLCS

C815, R801

OSC

55 FL. DATA (DI) 54 FL. CLK (CL)

53 FLT (CE)

50 OSC0 51 OSC1

52

FLRST

61 – 64, 1 – 3045 – 3246, 47

31S35

3G – 16G1G, 2G S1 – S34

SEGMENT

DRIVE

Q803

GRID

DRIVE

Q801, 802

F1

F2

+2.5V

FL801

FLUORESCENT

INDICATOR

TUBE

F2

(COIL/MOTOR DRIVE (IC502))

+5V

(MOTOR DRIVE (IC512))

+2.5V

REGULATOR

IC702

D+3.3V

A+3.3V

M+12V

D+5V

A+5V

+5V

REGULATOR

IC504

+3.3V

REGULATOR

IC901

+5V

REGULATOR

IC902

+12V

REGULATOR

IC903

RECT

D910 – 913

RECT

D906 – 909

S951

POWER

(AC IN)

2222

SCD-XE680

d

5-6. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS

Note on Printed Wiring Board:

• X : parts extracted from the component side.

• Y : parts extracted from the conductor side.

• : 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.

• Main board is multi-layer printed board. However, the patterns of inter mediate-layer have not been included in diagram.

• Indication of transistor

C Q

B

E

These are omitted.

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.

f

•

• 5 : fusible resistor.

• C : panel designation.

Note: The components identified by mark 0 or dotted line

• A : B+ Line.

• B : B– Line.

•Voltages and waveforms are dc with respect to ground

•Voltages are taken with a VOM (Input impedance 10 MΩ).

•Waveforms are taken with a oscilloscope.

• Circled numbers refer to waveforms.

• Signal path.

: internal component.

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

under no-signal conditions. no mark : SACD PLAY (): CD PLAY

Voltage var iations may be noted due to normal production tolerances.

J : SACD PLAY c : CD PLAY (ANALOG) I : CD PLAY (DIGITAL OUT)

: Impossible to measure

∗

4

W or less unless otherwise

• Circuit Boards Location

POWER SW board

HEADPHONE board

KEY board

DISPLAY board

PT board

POWER board

LOADING board

RF board

AUDIO boar

MAIN board

2323

SCD-XE680

5-7. SCHEMATIC DIAGRAM – RF Board – • See page 40 for Waveforms. • See page 43 for IC Block Diagram.

Q004

(SPINDLE)

(LIMIT)

S1

(SLED)

2SK3018

PHOTO DIODE

CONTROL SWITCH

(FOR CD)

S

CN003

CN002

25P

R004

R001

0

100

R002

TD-

TD+

FD-

FD+

C004

C006

6P

LIM_SW

SP+

SP-

SD+

SD-

D3V

47k

DVD_CD_PD

Q005

S

2SK3018

PHOTO DIODE

CONTROL SWITCH

(FOR SACD)

R005

47k

R008

2.2k

0.1

CD_LD

CD_LDGND

CD_VR

DVD_CD_PD

VMOD

LD_GND

DVD_LD

DVD_VR

DVD_LDGND

TRK+

TRK-

FCS-

FCS+

A

D

E

C

GND

H

VC

RF

F

G

VCC

B

M3

M2

SP+

SP-

SD+

SD-

LIM_SW

D3V

CDPDSW

DVD_LD

DVDPDSW

VMOD

RFPCD_LD

R006

220

C013

R007

820

A

B

C

D

A

D

E

C

H

RFP

F

G

B

CD_F

CD_E

DVD_CD_PD

5600p

C012

2200p

C011

2200p

C010

2200p

C009

C008

2200p

D L _ D V D

C021C017

22p22p

22p

C026

C018

0.01

C020

C016 180p

C030

22

10V

R093

Q001 Q003

2SB1121-ST-TD 2SB1121-ST-TD

AUTOMATIC

POWER CONTROL

(FOR SACD)

33

R092

0

C015D001R097

101SS352-TPH333k

JL081

6.3V

C031

0.1

C032

0.1

FOCUS/TRACKING ERROR AMP

C025C027

0.10.1

C001C023R015

2200p100

C022

1000p

SACD/CD RF AMP

CXD1881AR

R017

470

D O M V

CN005

C036

0.1

C039

0.1

C040

0.01

IC001

N

R

O

IR

D

M

L

L001

47µH

C045

1000p

R022

C041

0.01

12k

0.033

0.033 330p

C043

C042

C044

C046

0.47

R021

10M

R019 R094

33 33

AUTOMATIC

POWER CONTROL

(FOR CD)

D002C014C007 R003

1SS352-TPH31010 33k

D L _ D C

N

F

E

R

D

_

S

A T A

0

R025

0

R024

C048

0.047

JL006

JL003

JL002

JL001

6.3V

R090

0

C037C029

1000p10

E

F

I

F

T

R _

/P

K

E F

L C

D

0

R023

C055

R035

0

C002C038

2200p100

R020

470

C090

47

6.3V

C052

0.1

C051

0.1

R044

8.2k

C047

0.1 PI

C028

47

6.3V1

C003

0.1

R029

47k

R046 R036

100 10k

R065

10k

C050

22

C060

10V

0.1

R066C094C064C095 10k22

0.10.1 10V

MIRR

FE/PI

PI

TE

FE

SDEN

DATA_RF

CLK_RF

LDON

R083

10k

R082

10k

SUMMING AMP,

PI ERROR AMP,

AVC BUFFER

E _ D C

IC004

NJM3403AV(TE2)

CD_F

R084

10k

VCC

VEE

R087

10k

R086R085

10k10k

F

E

30P

DVDPDSW

CDPDSW

FD-

FD+

TD-

TD+

SD-

SD+

SP-

SP+

D3V

JL051

LIM_SW

H

G

AGND

RFAC

AGND

AVC

MIRR

DVDPDSW

CDPDSW

FE/PI

PI

TE

FE

A5V

SDEN

DATA_RF

CLK_RF

LDON

A3V

FD-

FD+

TD-

TD+

SD-

SD+

SP-

SP+

D3V

NC

LIM_SW

(Page 28)

The components identified by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number specified.

2424

Sony SCDXE-680 Service manual

TABLE OF CONTENTS

SERVICING NOTES

GENERAL

3-1. DISASSEMBLY FLOW

DISASSEMBLY

case (408226)

front panel section

3-4. AUDIO BOARD, MAIN BOARD

3-5. MECHANISM DECK (CDM66B-DVBU6B)

base unit (DVBU-6B)

TEST MODE

5-1. BLOCK DIAGRAM – RF/SERVO Section –

5-2. BLOCK DIAGRAM – SERVO Section –

5-3. BLOCK DIAGRAM – MAIN Section –

5-4. BLOCK DIAGRAM – AUDIO Section –

5-5. BLOCK DIAGRAM – DISPLAY/KEY CONTROL/POWER SUPPLY Section –

5-6. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS