Sony CDP-XE800 Service Manual

CDP-XE800

SERVICE MANUAL

Model Name Using Similar Mechanism NEW CD Mechanism Type CDM36-14 Base Unit Type BU-14 Optical Pick-up Type KSS-213B/S-N

SPECIFICATIONS

AEP Model

MICROFILM

COMPACT DISC PLAYER

— 1 —

CAUTION

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

This appliance is classified as a CLASS 1 LASER product. The CLASS 1 LASER PRODUCT MARKING is located on the rear exterior.

This caution

CAUTION

: INVISIBLE LASER RADIATION WHEN OPEN AND

INTERLOCKS DEFEATED. AVOID EXPOSURE TO BEAM.

ADVARSEL

SIKKERHEDSAFBRYDERE ER UDE AF FUNKTION. UNDGÅ UDSAETTELSE FOR STRÅLING.

VORSICHT

ABDECKUNG GE ÜBERBRÜCKT.

VARO!

TIINA NÄKYMÄTTÖMÄLLE LASERSÄTEILYLLE. ÄLÄ KATSO SÄTEESEEN.

VARNING

NAD OCH SPÄRREN ÄR URKOPPLAD. BETRAKTA EJ STRÅLEN.

ADVARSEL

SIKKERHEDSLÅS BRYTES. UNNGÅ EKSPONERING FOR STRÅLEN.

: USYNLIG LASERSTRÅLING VED ÅBNING NÅR

: UNSICHTBARE LASERSTRAHLUNG, WENN

FFNET UND SICHEREITSVERRIEGELUNG

NICHT DEM STRAHL AUSSETZEN.

: AVATTAESSA JA SUOJALUKITUS OHITETTAESSA OLET ALT-

: OSYNLIG LASERSTRÅLING NÄR DENNA DEL ÄR ÖPP-

: USYNLIG LASERSTRÅLING NÅR DEKSEL ÅPNES OG

label is located inside the unit.

TABLE OF CONTENTS

Section Title Page

SECTION 1. SERVICING NOTE ...................................... 3

SECTION 2. GENERAL ................................................4

SECTION 3. DISASSEMBLY

3-1. Front Panel Assembly ......................................................... 5

SECTION 4. TEST MODE..............................................6

SECTION 5. ELECTRICAL BLOCK CHECKING......8

SECTION 6. DIAGRAMS

6-1. Circuit Boards Location ................................................... 10

6-2. IC Pin Function

• IC801 System Control, Fluorescent Indicator Tube Drive (CXP82316-060Q) .. 11

6-3. Printed Wiring Board — BD Section — .......................... 13

6-4. Schematic Diagram — BD Section —............................. 15

6-5. Printed Wiring Board — Main Section — ....................... 20

6-6. Schematic Diagram — Main Section — .......................... 23

SECTION 7. EXPLODED VIEWS

7-1. Front Panel Section .......................................................... 27

7-2. Chassis Section................................................................. 28

7-3. CD Mechanism Section (CDM36-14).............................. 29

7-4. Base Unit Section (BU-14)...............................................30

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.

Flexible Circuit Board Repairing

• Keep the temperature of 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.

SAFETY-RELATED COMPONENT WARNING !!

COMPONENTS IDENTIFIED BY MARK ! OR DOTTED LINE WITH MARK ! ON THE SCHEMATIC DIAGRAMS AND IN THE P AR TS LIST ARE CRITICAL T O SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.

SECTION 8. ELECTRICAL PARTS LIST .................31

— 2 —

SECTION 1

SERVICING NOTE

HOW TO OPEN THE DISC TRAY WHEN POWER SWITCH TURNS OFF

Insert a screwdriver into the aperture of the unit bottom, and move it in the direction of arrow.

NOTES ON HANDLING THE OPTICAL PICK-UP 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.

LASER DIODE AND FOCUS SEARCH OPERA TION CHECK

Carry out the “S curve check” in “CD section adjustment” and check that the S curve waveform is output three times.

— 3 —

Identifying the Parts

Front Panel

SECTION 2

GENERAL

1 POWER switch 2 PLAY MODE button 3 REPEAT button 4 FADER button 5 TIME button 6 Disc tray 7 Remote sensor 8 0/) buttons 9 Display window 0 CHECK button !¡ CLEAR button !™ ENTER button !£ ≠ AMS* ± knob !¢ p (stop) button !∞ P (pause) button

@£

2345 6 7 8 90!¡!™

@™

@¡

!ª@º

!•

!§ · (play) button !¶ § OPEN/CLOSE button !• MUSIC SCAN button !ª AUTO SPACE button @º PEAK SEARCH button @¡ EDIT/TIME FADE button @™ PHONE LEVEL control @£ PHONES jack

* AMS is the abbreviation for Automatic Music Sensor.

!¶

!§

!£

!¢!∞

— 4 —

SECTION 3

DISASSEMBLY

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

3-1. FRONT PANEL ASSEMBLY

Push the part A in the direction of arrow to remove the loading panel upward.

A part

Claw

Remove the front panel assembly with care to claws.

Panel bracket

Wire

Two screws (BVTP2.6x8)

Connector (CN351)

Connector (CN302) (Flat type 23 core)

Three screws (BVTP3x8)

Claw

— 5 —

SECTION 4

TEST MODE

4-1. AF MODE

The following checks can be performed in the AF mode, which is set by connecting the TP2 (AFADJ : JW76) terminal on MAIN board to the Ground and turning on the power.

• FL tube check

After all segments light up, when the · button is pressed, the following will be displayed. (Partial lighting 1)

8 8 8 8

When the p button is pressed, the following will be displayed. (partial lighting 2)

6810

12 14

16 18 20

When the OPEN/CLOSE § button is pressed, all will light up again.

When the ≠ AMS ± knob is turned right, the following will be displayed. (partial lighting 3)

(Partial lighting 2)

(Partial lighting 1)

Button

TIME FADER REPEAT PLAY MODE EDIT/ TIME FADE PEAK SEARCH AUTO SPACE MUSIC SCAN

• Remote commander check

When the · button of the remote commander is pressed, the “·” lights up. All go off when the other buttons are pressed.

• Audio check

• Initial setting of digital filter and release of mute.

• When the TP2 (AF ADJ) terminal on MAIN board is set to HIGH (VDD), emphasis turns on. When set to LOW (GND), it turns off.

Button No.

Displayed

00 01 02 03

05 06 07 25

Button

ENTER CLEAR CHECK

)

OPEN/ CLOSE § PLAY · STOP p ≠ AMS ±

Button No.

Displayed

32 33 34 35 36

All lit

Partial lighting 1 Partial lighting 2 Partial lighting 3

(Partial lighting 3)

• Key check

All buttons have corresponding button number s. When a b utton is pressed, the counter will count up and display the button’s number. Ho wever , the counter will only count to “17”. It will not count for buttons already pressed once, but will display the button’ s number.

88888888

Display of counting

Display of button number

— 6 —

4-2. ADJ MODE

The following operations are performed in the ADJ mode, which is set by connecting the TP1 (ADJ : JW75) terminal to the Ground and turning on the power.

[ MAIN BOARD ] — Component Side —

• During playback, there is no problem even if the GFS is continuously LOW.

• High speed search is prohibited during access.

• During playback, the gain of focus servo and spindle servo does not decrease.

• Servo related manual operations and measurement can be performed. (For details of operations, refer to T able of K ey Operrations in ADJ Mode.)

4-3. CLV-S MODE

The spindle servo for playback sets into the CLV-S mode when the TP2 (AFADJ) terminal is connected to Ground after turning on the power.

TABLE OF BUTTON OPERATIONS IN ADJ MODE

The jitter value display mode can be set after the all-music remaining number mode using the TIME button.

The functions of the number buttons are shown in the following table.

FUNCTIONS OF NUMBER BUTTONS (With the attached remote commander)

Button

1 2 3 4 5 6 7 8

Focus bias 8-step up Middle of focus bias up/down turning point Tracking servo, sled servo off Auto gain initialization Focus servo off Focus bias 8-step down Immediate readjustment of focus bias Tracking servo, sled servo on Auto focus bias start point

Function

CN302

TP1

(ADJ)

TP2

(AF ADJ)

JW75 JW76

CN301

IC920

— 7 —

SECTION 5

ELECTRICAL BLOCK CHECKING

Note:

1. CD Block is basically designed to operate without adjustment. Therefore, check each item in order given.

2. Use YEDS-18 disc (3-702-101-01) unless otherwise indicated.

3. Use an oscilloscope with more than 10MΩ impedance.

4. Clean the object lens by an applicator with neutral detergent when the signal level is low than specified value with the following checks.

S Curve Check

oscilloscope

BD board

TP (FE) TP (VC)

Procedure :

1. Connect oscilloscope to test point TP (FE) on BD board.

2. Connect between test point TP (FEI) and TP (VC) by lead wire.

3. Turned Power switch on.

4. Put disc (YEDS-18) in and turned Power switch on again and actuate the focus search. (actuate the focus search when disc table is moving in and out.)

5. Check the oscilloscope waveform (S-curve) is symmetrical between A and B. And confirm peak to peak level within 3±1 Vp-p.

S-curve waveform

symmetry

within 3 ± 1 Vp-p

6. After check, remove the lead wire connected in step 2.

Note : • Try to measure several times to make sure than the ratio of

A : B or B : A is more than 10 : 7.

• Take sweep time as long as possible and light up the brightness to obtain best waveform.

RF Level Check

oscilloscope

BD board

TP (RF) TP (VC)

Procedure :

1. Connect oscilloscope to test point TP (RF) on BD board.

2. Turned Power switch on.

3. Put disc (YEDS-18) in to play the number five track.

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

Note: A clear RF signal waveform means that the shape “◊” can be

clearly distinguished at the center of the waveform.

RF signal waveform

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

level : 1.3 Vp-p

+0.25 –0.20

E-F Balance (1 Track Jump) Check (Without remote commander)

oscilloscope

BD board

TP (TE) TP (VC)

Procedure :

1. Connect oscilloscpe to test point TP (TE) on BD board.

2. Turned Power switch on.

3. Put disc (YEDS-18) in to play the number five track.

4. Press the “P (Pause)” button. (Becomes the 1 track jump mode)

5. Check the level B of the oscilliscope's waveform and the A (DC voltage) of the center of the Traverse waveform. Confirm the following : A/B x 100 = less than ± 22%

1 track jump waveform

Center of the waveform

level : 1.3 ± 0.6 Vp-p

symmetry

A (DC voltage)

E-F Balance Check (With remote commander)

oscilloscope

BD board

TP (TE) TP (VC)

Procedure :

1. Connect the test point TP1 (ADJ : JW75) on MAIN board to the ground with a lead wire on main board.

2. Connect oscilloscpe to test point TP (TE) on BD board.

3. Turn the Power switch on to set the ADJ mode.

4. Put disc (YEDS-18) in to play the number five track.

5. Press the “3” button. (The tracking servo and the sledding servo are turned OFF.)

— 8 —

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