Sony CDPCA-70-ES Service manual

CDP-CA70ES

SERVICE MANUAL

Manufactured under license from Dolby Laboratories Licensing Corporation. “DOLBY” and the double-D symbol a are trademarks of Dolby Laboratories Licensing Corporation.

US Model

Canadian Model

Model Name Using Similar Mechanism NEW CD Mechanism Type CDM27I Base Unit Name BU-5BD25 Optical Pick-up Name KSS-213B/S-N

SPECIFICATIONS

Compact Disc Player

Laser Semiconductor laser (λ = 780 nm)

Emission duration: continuous

Laser output Max 44.6 µW*

* 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. Frequency response 2 Hz to 20 kHz ± 0.3 dB Signal-to-noise ratio More than 117 dB Dynamic range More than 99 dB Harmonic distortion Less than 0.0025% Channel separation More than 110 dB

Output

Jack Maximum Load type output impedance

level

LINE OUT Phono 2V Over 10 kΩ

jacks (at 50 kΩ)

DIGITAL OUT Optical –18 dBm Wave length: (OPTICAL) output 660 nm

connector

PHONES Stereo 15 mW 32 Ω

phone jack

General

Power requirements 120 V AC, 60 Hz Power consumption 15W Dimensions (approx.) 430 × 125 × 400 mm (w/h/d) (17 × 5 × 15 3/4 in.) incl. projecting parts Mass (approx.) 6.4 kg (14 lbs 2 oz)

Supplied accessories

Audio cord (2 phono plugs–2 phono plugs) (1) Remote commander (remote) (1) R6(SIZE AA)batteries (2)

Design and specifications are subject to change without notice.

MICROFILM

COMPACT DISC PLAYER

TABLE OF CONTENTS

1. SERVICE NOTE ···························································4

2. GENERAL ······································································ 7

3. DISASSEMBLY

3-1. Front Panel ········································································· 9 3-2. Disc Table Assembly and Disc Table and Press Pulley······ 9 3-3. Main Board······································································· 10 3-4. CDM Assembly ································································ 10 3-5. Optical Pick-up Block Assembly ····································· 11 3-6. Bracket (Gear) Assembly ················································· 11

4. TEST MODE ································································ 12

5. ELECTRICAL BLOCK CHECKING···················· 15

6. DIAGRAMS

6-1. Circuit Boards Location ··················································· 17 6-2. Block Diagram ································································· 19 6-3. Schematic Diagram BD Section····································· 21 6-4. Printed Wiring Board BD Section·································· 23 6-5. Printed Wiring Board Main Section ······························ 25 6-6. Schematic Diagram Main Section (1/2) ························· 27 6-7. Schematic Diagram Main Section (2/2) ························· 29 6-8. Schematic Diagram HP Section ···································· 31 6-9. Printed Wiring Board HP Section··································32 6-10. Schematic Diagram Display Section ······························ 33 6-11. Printed Wiring Board Display Section ··························· 35 6-12. IC Block Diagrams ··························································· 37 6-13. IC Pin Functions ······························································· 40

7. EXPLODED VIEWS

7-1. Front Panel and Case Section ··········································· 44 7-2. Back Panel and Disc Table Section ·································· 45 7-3. Chassis Section································································· 46 7-4. Base Unit Section (BU-5BD22) ······································· 47

8. ELECTRICAL PARTS LIST ··································· 48

— 2 —

Laser component in this product is capable of emitting radiation exceeding the limit for Class 1.

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.

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.

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

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

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 pickup block. Therefore, when checking the laser diode emission, observe from more than 30 cm away from the objective lens.

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 .

0.15µF

1.5k

Ω

voltmeter (0.75V)

Earth Ground

Fig. A. Using an AC v oltmeter to check A C leakage.

ATTENTION AU COMPOSANT AYANT RAPPORT

LES COMPOSANTS IDENTIFÉS P AR UNE MARQUE ! SUR LES DIAGRAMMES SCHÉMA TIQUES ET LA LISTE DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS QUE PAR DES PIÈSES SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU DANS LES SUPPÉMENTS PUBLIÉS PAR SONY.

À LA SÉCURITÉ!

— 3 —

SERVICING NOTE

HOW TO OPEN THE DISC TRAY WHEN POWER SWITCH TURNS OFF

OUT

SECTION 1

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 driver in the reverse direction

(to IN direction).

Tray

NOTE FOR MAIN GEAR INSTALLATION

Stopper washer (5)

Install the MAIN GEAR

as show in the drawing.

Rotate the GEAR (U/D)

to the arrow

direction.

Slide the SET LEVER to the

arrow

direction.

— 4 —

Set the mark of

ROTARY ENCODER.

SHIPMENT MODE

Performed when returning the unit to the customer. Custom File Erases all custom files and initializes settings.

Procedure:

1. Remove the discs from all trays.

2. While pressing the DISC 2 button and 3 button. press the 1/u button to turn ON the power.

3. “NO DISC” is displayed, indicating that the mode has ended.

NOTE: “NO DISC” may be displayed even if there are discs on

the trays.

CD-TEXT TEST DISC

This unit is able to display the test data (character information) written in the CD on its fluorescent indicator tube. The CD-TEXT TEST DISC (TGCS-313:4-989-366-01) is used for checking the display. To check, perform the following procedure.

Checking Method:

1. Turn ON the power , set the disc on the disc table with the side labeled as “test disc” as the right side, close the front cover , and chuck the disc.

2. Press the ” button and play back the disc.

3. The following will be displayed on the fluorescent indicator tube.

Display : 1kHz/0 dB/ L&R

4. Press the ≠ and ± buttons to switch the track. The text data of each track will be displayed. For details of the displayed contents for each track, refer to “Table 1 : CD-TEXT TEST DISC TEXT Data Contents” and “Table 2 : CDTEXT TEST DISC Recorded Contents and Display”.

Restrictions in CD-TEXT Display

In this unit, some special characters will not be displayed properly. These will be displayed as a space or a character resembling it. For details, refer to “Table 2 : CD-TEXT DISC Recorded Contents and Display”.

Table 1 : CD-TEXT TEST DISC TEXT Data Contents (TRACKS No. 1 to 41:Normal Characters)

TRACK

No.

1 2 3 4 5 6 7 8

9 10 11 12 13 14 15 16 17 18 19 20 21

Displayed Contents

1kHz/0dB/L&R 20Hz/0dB/L&R 40Hz/0dB/L&R 100Hz/0dB/L&R 200Hz/0dB/L&R 500Hz/0dB/L&R 1kHz/0dB/L&R 5kHz/0dB/L&R 7kHz/0dB/L&R 10kHz/0dB/L&R 16kHz/0dB/L&R 18kHz/0dB/L&R 20kHz/0dB/L&R 1kHz/0dB/L&R 1kHz/-1dB/L&R 1kHz/-3dB/L&R 1kHz/-6dB/L&R 1kHz/-10dB/L&R 1kHz/-20dB/L&R 1kHz/-60dB/L&R 1kHz/-80dB/L&R

TRACK

No.

22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41

Displayed Contents

1kHz/-90dB/L&R Infinity Zero w/o emphasis//L&R Infinity Zero with emphasis//L&R 400Hz+7kHz(4:1)/0dB/L&R 400Hz+7kHz(4:1)/-10dB/L&R 19kHz+20kHz(1:1)/0dB/L&R 19kHz+20kHz(1:1)/-10dB/L&R 100Hz/0dB/L* 1kHz/0dB/L* 10kHz/0dB/L* 20kHz/0dB/L* 100Hz/0dB/R* 1kHz/0dB/R* 10kHz/0dB/R* 20kHz/0dB/R* 100Hz Squer Wave//L&R 1kHz Squer Wave//L&R 1kHz w/emphasis/-0.37dB/L&R 5kHz w/emphasis/-4.53dB/L&R 16kHz w/emphasis/-9.04dB/L&R

* Other channel is infinity zero.

NOTE : The contents of Track No. 1 to 41 are the same as those of the current TEST DISC-their titles are displayed.

— 5 —

Table 2: CD-TEXT TEST DISC Recorded Contents and Display

(In this unit, some special characters cannot be displayed. This is not a fault.)

TRACK

42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67

Recorded contents

! ” # $%& ’ (21h to 27h)1kHz 0dB L&R

( ) + , – . / (28h to 2Fh)

01234567 (30h to 37h) 8 9 : ; < = > ? (38h to 3Fh)

@A B C D E F G (40h to 47h)

H I J K L MN O (48h to 4Fh) P Q R S T U V W (50h to 57h) X Y Z [ ¥ ] ^ _ (58h to 5Fh)

a b c d e f g (60h to 67Fh)

′

h i j k l m n o (68h to 6Fh) p q r s t u v w (70h to 77h) x y z { I } (78h to 7Fh)

i ¢ £ ¤ ¥ § (A0h to A7h) 8859-1

≥ C ª

•±23

†

º ¿ (B8h to BFh)

–

µ ¶ • (B0h to B7h)

′

(A8h to AFh)

341

À Á Â Ã Ä ÅÆÇ (C0h to C7h)

ИЙКЛМНОП (C8h to CFh) D СТУФХЦ (D0h to D7Fh) Ø Ù ÚÛ Ü Y ß (D8h to DFh)

абвгдежз (E0h to E7h) ийклмноп (E8h to EFh) ∂ стуфхц÷ (F0h to F7h) ø ù ú û ü y ÿ (F8h to FFh)

No.66 No.67 to No.99

Display

0 dB L & R are not displayed

N All the same N All the same N All the same N All the same N All the same N All the same

X Y Z [ \ ] ^ _ (58···· 11 a b c d e f g (60····

N All the same N All the same

xyz{I}–(78····

i ¤ § (A0···· ¢ £ ¥ are not displayed

–

(A8···· ≥C ª¬PR are not displayed

±µ(B0····

′

¿ (B8···· †

•23

¶• are not displayed

º are not displayed

341

а б в г Д ЕЖЗ (C0···· ийклмноп(C8···· D С т у ф O Ц (D0···· ШщъыьY Я(D8···· is not displayed

N All the same N All the same

ñòóôoö÷ (F0····∂ is not displayed

шщъыьy y(F8···· is not displayed

N All the same N All the same

N All the same

— 6 —

Identifying the Parts

Front Panel

SECTION 2

GENERAL

!¶

1 POWER (1/u) switch 2 DISC (1–5) buttons 3 CONTINUE button 4 SHUFFLE button 5 PROGRAM button 6 EX-CHANGE button 7 DISC SKIP button 8 § OPEN/CLOSE button

!§

!∞

!¢

9 ” (CD PLAY) button !º p (CD STOP) button !¡ PHONE LEVEL button !™ P (pause) button !£ PHONES jack !¢ TIME/NEXT button !∞ REPEAT button !§ AMS (≠ ±) buttons !¶ Numeric buttons

9 !º

!¡!™!£

— 7 —

This section is extracted from instruction manual.

— 8 —

SECTION 3

Nine screws

M 3

!£

Three screws

M 3

!º

Connector

(CN351)

Connector

(CN403)

!¡

Flat type wire (15 core)

(CN402)

Loading panel

Three screws

+BVTT 3

!¢

Three screws

+BVTP 2.6

!∞

Reinforcement (panel)

!§

Front panel

!™

Three screws

+BVTT 3

Bottom board

!§

Press pulley(L)

!∞

Chucking yoke

!¶

Magnet

Screw (BVTP 3 × 8)

Screw +BVTP 3 × 8

Screw

(BVTP 3 × 8)

Screw (BVTP 3 × 8)

Bracket

(guide F1)

Bracket

(guide F1)

Bracket (guide B1)

!£

Insert an ice pick tip and hold it.

!¢

Rotate the press pulley(L) in the arrow direction.

Bracket

(guide B1)

Flat type wire (6 core)

!º

Disc table assembly

!¡

Screw

(M 3 × 12)

!™

Disc table (B)

DISASSEMBLY

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

3-1. FRONT PANEL

1 Remove top cover. 2 Eject the disc table referring to SERVICING NOTE (Page 4).

3-2. DISC TABLE ASSEMBLY AND DISC TABLE AND PRESS PULLEY

— 9 —

3-3. MAIN BOARD

)

(to Rotary encoder)

Connector

Flat type wire

(23 core)(CN401)

Main board

Two screws

(BV/ring)

Seven screws

(BVTP 3

Two screws

(BVTT 3

Flat type wire

(6 core)(CN504

Connector (CN601)

Two claws

3-4. CDM ASSEMBLY

CDM assembly

Back panel

Two screws

(BVTT 3

Bracket (transformer) and

bracket (board)

Five screws

(BV/ring)

— 10 —

3-5. OPTICAL PICK-UP BLOCK ASSEMBLY

)

Two screws

(PTPWH 2.6

Compression spring (BU)

Holder (BU)

Screw

(M 3

12)

Two screws

(PTPWH 2.6

Optical pick-up block assembly

Flat type wire (23 core)

(BD board, to CN101)

Compression spring (BU)

3-6. BRACKET (GEAR) ASSEMBLY

Stopper washer (5)

Gear (MAIN)

Screw

(BVTP 3

Rotary encoder

Stopper washer (5)

Gear (REV)

Stopper washer (5)

Gear (U/D)

Five screws

(BVTP 3

!º

Bracket (GEAR

assembly

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

GEAR installation” on page 4.

— 11 —

SECTION 4

TEST MODE

ADJ MODE

1. Chuck the CD first, and then turn OFF the power.

2. Short-circuit the test point (TP2:ADJ) of the main board and ground with a lead wire.

3. Press the 1/u button to turn ON the power. The CD is played back automatically and the ADJ mode is set.

4. To exit the mode, press the 1/u button to turn OFF the power.

• Prohibits high speed search during accessing

• Ignores even if GFS becomes L

ADJ Mode Special Function Table

Button Function

Tracking servo, sled servo OFF

Tracking servo, sled servo ON

FLUORESCENT INDICATOR TUBE, LED ALL LIT,

AND KEY CHECK MODE

1. Short-circuit the test (TP1:AF ADJ) of the main board and ground with a lead wire.

2. Press the 1/u button to turn ON the power. The whole fluorescent indicator tube lights up. Nothing will be displayed when the SRAM is faulty or improperly soldered.

3. All buttons have individual button numbers. When a button is pressed, the button number is counted up and displayed.

Count up display Displays button numbe

When remote controller signals are received, “RM **” will be displayed. (** are the numbers corresponding to the remote controller keys.) When using the remote controller, switch the COMMAND MODE switch to CD1.

4. To exit the mode, press the 1/u button to turn OFF the power.

Buttons and Corresponding Button Numbers

Button Button Number or Display

CONTINUE SHUFFLE PROGRAM REPEAT TIME/TEXT DISC CHECK DISC1 DISC2 DISC3 DISC4 DISC5

( (PLAY) P (P AUSE) p (STOP)

EX-CHANGE DISC SKIP

§ OPEN/CLOSE AMS ± AMS ≠ 1 2 3 4 5 6 7 8 9 10 >10

18 17 16 9 8 30 23 22 21 20 19 Partial lighting 1 (Grid check) 28 Partial lighting 2 (Segment check) 24 25 All lit (LED lighting) 30 31 4 3 2 1 0 15 14 13 12 11 10

[MAIN BOARD] – CONDUCTOR SIDE –

IC501

TP2

(ADJ)

R544

TP1

(AFADJ)

— 12 —

All lit

Partial lighting 1

Light alternately

˜

12345

678910 11 12 13 14 15 16 17 18 19 20

Partial lighting 2

Light alternately

˜

Light alternately

˜

— 13 —

AGING MODE

This unit is equipped with an aging mode to check operations of the mechanism deck.

• When faults occur: Aging stops, and the state when aging stopped is displayed on the fluorescent display tube.

• When no fault has occurred: Aging is continued repeatedly.

Note:Do not use the test disc when performing aging.

Aging will not be performed properly if discs with tracks shorter than 4 seconds are used.

Aging method 1

(When using the aging mode remote controller (J-2501-123-A):

1. Set the COMMAND MODE switch to CD1.

2. Press the 1/u button and turn ON the power.

3. Set discs on all trays.

(More than two discs if five are not available.)

4. Press the AGING START button of the aging remote controller.

5. Aging starts and the message shown in Fig. 1 is displayed on the

fluorescent display tube.

6. To end, press the 1/u button.

Aging method 2

(When no aging mode remote controller):

1. Press the 1/u button and turn ON the power.

2. Set discs on all trays.

(More than two discs if five are not available.)

3. Press the 4 button, 0 button, and DISC SKIP button in this

order together.

4. Aging starts and the message shown in Fig. 1 is displayed on the

fluorescent display tube.

5. To end, press the 1/u button.

Fig. 1 Aging Operations and Their Messages

Code No. State

1 2 3 4 5 6 7 8 9

TOC reading Accessing last track Playing back last track (3 seconds) EX-CHANGE (Tray opened while chucking) DISC SKIP (Disc tray rotated) CLOSE (Tray closed) Accessing first track Playing back first track (3 seconds) OPEN (Tray opened) DISC SKIP (Disc tray rotated, and next disc was selected) CLOSE (Tray closed)

Display when Normal

AGING 1 AGING 2 Counter display AGING 4 AGING 5 AGING 6 AGING 7 Counter display AGING 9 AGING A AGING 0

Display when Abnormal

AGING NG1 AGING NG2 AGING NG3 AGING NG4 AGING NG5 AGING NG6 AGING NG7 AGING NG8 AGING NG9 AGING NGA AGING NG0

The discs are selected in the order of DISC 1 n DISC 2 n DISC 3 n DISC 4 n DISC 5 n DISC 1 n .... Empty trays are skipped.

— 14 —

+ 30 hidden pages