Sony CDPCE-305, CDPCE-405, CDP-C-250-Z, CDP-C-350-Z Service manual

CDP-C250Z/C350Z/CE305/CE405

SERVICE MANUAL

Photo : CDP-CE405

Model Name Using Similar Mechanism CDP-C265/C365 CD Mechanism Type CDM27A2-5BD20 Base Unit Type BU-5BD20 Optical Pick-up Type KSS-213B/K-N

SPECIFICATIONS

US Model

CDP-C250Z/C350Z/CE305/CE405

Canadian Model

AEP Model

CDP-CE305/CE405

UK Model

CDP-CE405

Australian Model

E Model

Chinese Model

CDP-CE305/CE405

Compact Disc Player

Laser Semiconductor laser (λ = 780 nm)

Laser output Max 44.6 µW*

Frequency response 2 Hz to 20 kHz ± 0.5 dB Signal-to-noise ratio More than 102 dB Dynamic range More the 98 dB Harmonic distortion Less than 0.0045% Channel separation More than 100 dB

Output

LINE OUT Phono 2V

Emission duration: continuous

* This output is the value measured at a

distance of 200 mm from the objective lens surface on the Optical Pick-up block with 7 mm aperture.

Jack Maximum Load type output impedance

level

Over 10 kilohms

jacks (at 50 kilohms)

General

Power requirements

Where purchased Power requirements US, Canadian 120V AC, 60 Hz AEP, UK, German, 220-230V AC, 50/60 Hz

Italian, East European Australian 240V AC, 50/60 Hz E 110-120V, 220-240V

adjustable, 50/60 Hz

Chinese 220-240V AC, 50 Hz

Power consumption 14W Dimensions (approx.) 430 × 120 × 385 mm (w/h/d) (17 × 4 3/4 × 15 1/4 in.) incl. projecting

parts

Mass (approx.) 5.6 kg (12 lbs 6 oz)

Supplied accessories

Audio cord (2 phono plugs–2 phono plugs) (1) Remote commander (remote) (CDP-C350Z/CE405 only) Sony SUM-3 (NS) batteries (CDP-C350Z/CE405 only) AC plug adaptor (1) (E model only)

Design and specifications are subject to change without notice.

COMPACT DISC PLAYER

MICROFILM

— 1 —

The following caution label is located inside of the unit.

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

CAUTION

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

TABLE OF CONTENTS

Section Title Page

SECTION 1. GENERAL................................................ 5

SECTION 2. DISASSEMBLY

2-1. Case, Bottom Plate and Front Panel .................................. 6

2-2. Back Panel and Disc Table ................................................ 6

2-3. Optical Pick-up Block Assembly....................................... 7

2-4. Bracket (Gear) Assembly................................................... 7

SECTION 3. ELECTRICAL BLOCK CHECKING.... 8

SECTION 4. DIAGRAMS

4-1. Circuit Boards Location ................................................... 10

4-2. Printed Wiring Board — BD Section — ......................... 11

4-3. Schematic Diagram — BD Section —............................ 13

4-4. IC Block Diagrams .......................................................... 15

4-5. Printed Wiring Board — Main Section —...................... 17

4-6. Schematic Diagram — Main Section — ......................... 21

4-7. IC Pin Functions

• IC101 Digital Signal Processor (CXD2545Q) .............. 24

• IC303 System Control (CXP82320-064Q) ................... 27

SECTION 5. EXPLODED VIEWS

5-1. Front Panel and Case Section .......................................... 28

5-2. Back Panel and Disk Table Section ............................... 29

5-3. Chassis Section ................................................................. 30

5-4. Base Unit Section (BU-5BD20) ...................................... 31

SAFETY-RELATED COMPONENT WARNING !!

COMPONENTS IDENTIFIED BY MARK ! OR DOTTED LINE WITH MARK ! 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 PUBLISHED BY SONY.

SECTION 6. ELECTRICAL PARTS LIST ...............32

ATTENTION AU COMPOSANT AYANT RAPPORT

À LA SÉCURITÉ!! LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE ! SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS QUE PAR DES PIÈCES SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.

— 2 —

MODEL IDENTIFICATION — BACK PANEL —

4-978-

CDP-C250Z

US Model : 490-7π

CDP-C350Z

US Model : 490-8π

CDP-CE305

US Model : 490-0π Canadian Model : 490-1π AEP Model : 767-2π German Model : 490-3π Australian Model : 490-4π E Model : 490-5π Chinese Model : 490-6π

CDP-CE405

US Model : 767-0π Canadian Model : 767-1π AEP, East Europian, Chinese Model : 767-2π UK Model : 767-4π German Model : 767-3π E Model : 767-6π Australian Model : 767-5π

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

SAFETY CHECK-OUT

(US model only)

After correcting the original service problem, perform the following safety checks before releasing the set to the customer: Check the antenna terminals, metal trim, “metallized” knobs, screws, and all other exposed metal parts for AC leakage. Check leakage as described below.

LEAKAGE

The AC leakage from any exposed metal part to earth ground and from all exposed metal parts to any exposed metal part having a return to chassis, must not exceed 0.5 mA (500 microampers). Leakage current can be measured by any one of three methods.

1. A commercial leakage tester, such as the Simpson 229 or

RCA WT-540A. Follow the manufacturers’ instructions to

use these instruments.

2. A battery-operated AC milliammeter. The Data Precision 245

digital multimeter is suitable for this job.

3. Measuring the voltage drop across a resistor by means of a

VOM or battery-operated AC voltmeter. The “limit”

indication is 0.75 V, so analog meters must have an accurate

low-voltage scale. The Simpson 250 and Sanwa SH-63Trd

are examples of a passive VOM that is suitable. Nearly all

battery operated digital multimeters that have a 2V AC range

are suitable. (See Fig. A)

To Exposed Metal Parts on Set

0.15µF

1.5k

AC voltmeter (0.75V)

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.

Earth Ground

Fig. A. Using an AC voltmeter to check AC leakage.

— 3 —

HOW TO OPEN THE DISC TRAY WHEN POWER SWITCH TURNS OFF

Tray

Insert a tapering driver into the aperture of the unit bottom, and turn in the direction of arrow (to OUT direction).

* To close the disc tray, turn the driver in the reverse direction

(to IN direction).

NOTE FOR MAIN GAER INSTALLATION

Install the MAIN GEAR as show in the drawing.

Stopper washer (5)

Rotate the GEAR (U/D) to the arrow Adirection.

Slide the SET LEVER to the arrow B direction.

— 4 —

Set the mark of ROTARY ENCODER.

Identifying the Parts

Front Panel

SECTION 1

GENERAL

234

@§@∞@¶

1 POWER switch 2 CONTINUE button 3 SHUFFLE button 4 PROGRAM button 5 CHECK button 6 CLEAR button 7 REPEAT button 8 DISC 1-5 buttons 9 Display window 0 Disc tray !¡ =/+ (AMS*) buttons !™ 0/) (manual search) buttons !£ ” (play) button !¢ P (pause) button

@¢

!∞ p (stop) button !§ 6 OPEN/CLOSE button !¶ DISC SKIP button !• EX-CHANGE button !ª DISC CHECK button (CDP-CE305/CE405 only) @º Remote sensor @¡ PEAK SEARCH button (CDP-CE305/CE405 only) @™ EDIT/TIME FADE button (CDP-CE305/CE405 only) @£ >10 (over 10) button @¢ Numeric (1-10) buttons @∞ TIME button @§ FADER button @¶ MUSIC SCAN button

!¡

@£

!™

@™

@¡

!£

!¢

!∞

!§ !¶

!• !ª

@º

* AMS is the abbreviation for Automatic Music Sensor.

— 5 —

SECTION 2

DISASSEMBLY

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

2-1. CASE, BOTTOM PLATE AND FRONT PANEL

Case

Two screws (M3×8)

!º

Two screws (BVTT3×8)

!™

Front panel

Flat type wire (9 core) (MAIN board, to CN402)

Two screws (BV3×8)

Two screws (M3×8)

Flat type wire (35 core) (MAIN board, to CN402)

!¡

2-2. BACK PANEL AND DISC TABLE

!¢

Disc table (B)

!∞

Disc table (A)

!™

Bracket

!¡

Screw (BVTP3×8)

(guideB1)

Three screws (BVTP3×10)

Four screws (BVTP3×10)

!£

Screw (PTPWH3×12)

Bottom plate

Three screws (BVTT3×8)

Back panel

Connector

Flat type wire (6 core) (MAIN board, to CN404)

Five screws (BVTP3×10)

Bracket (guide F1)

Screw (BVTP3×8)

— 6 —

Bracket (guide B1)

Screw (BVTP3×8)

2-3. OPTICAL PICK-UP BLOCK ASSEMBLY

Two screws (PTPWH2.6×6)

Compression spring (BU)

Holder (BU)

Screw (PTPWH3×12)

Two screws (PTPWH2.6×6)

Optical pick-up block assembly

Flat type wire (16 core) (BD board, to CN101)

Compression spring (BU)

2-4. BRACKET (GEAR) ASSEMBLY

Stopper washer (5)

Gear (MAIN)

Screw (BVTP3×8)

Rotary encoder

Stopper washer (5)

Gear (REV)

Gear (U/D)

Five screws (BVTP3×8)

Stopper washer (5)

Bracket (GEAR) assembly

Note : As for the installation of the main gear, refer to “Note for MAIN

GAER installation” on page 4.

— 7 —

SECTION 3

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 10M impedance.

4. Clean the object lens using 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. Turn Power switch on.

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

5. Check if 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

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 :

+0.25

1.2 Vp-p

–0.20

E-F Balance Check

oscilloscope

BD board

TP (TE) TP (VC)

Procedure :

1. Connect test point TP (ADJ) to ground with a lead wire.

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

3. Turned Power switch on.

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.)

6. 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 × 100 = less than ± 22%

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 if RF signal level is correct or not.

Traverse waveform

Center of the waveform

level : 1.3 ± 0.6 Vp-p

7. Press the “8” button. (The tracking servo and sledding servo are turned ON.) Confirm the C (DC voltage) is almost equal to the A (DC voltage) is step 6.

Traverse waveform

Tracking servo Sledding servo

OFF

Tracking servo Sledding servo

8. Disconnect the lead wire of TP (ADJ) connected in step 1.

— 8 —

A (DC voltage)

C (DC voltage)

RF PLL Free-run Frequency Check

Procedure :

1. Connect frequency counter to test point (PLCK) with lead wire.

frequency counter

BD board

TP (PLCK)

2. Turned Power switch on.

3. Put the disc (YEDS-18) in to play the number five track. Confirm that reading on frequency counter is 4.3218MHz.

Adjustment Location :

[ BD BOARD ] — Conductor Side —

(PLCK)

IC103

IC101

(RF)

(VC)

(FE)

(FEI)

(TE)

[ MAIN BOARD ] — Conductor Side —

TP2

(ADJ)

IC401

— 9 —

4-1. CIRCUIT BOARDS LOCATION

SECTION 4

DIAGRAMS

TABLE MOTOR BOARD

LOADING BOARD

10 KEY BOARD

BD BOARD

SENSOR BOARD

MAIN BOARD

DISPLAY BOARD

— 10 —

+ 25 hidden pages